Arctic Sea Ice : Forum

Cryosphere => Arctic sea ice => Topic started by: Espen on July 05, 2013, 03:04:48 PM

Title: Arctic Image of the Day
Post by: Espen on July 05, 2013, 03:04:48 PM
Just for the fun of it, if you find some funny motives along your studies in the Arctic Region you can post them here, here is the first one I picked up today, it is called Birdie Namkheng

Namkheng (น้ำแข็ง) = Hard Water = Ice (Thai)
Title: Re: Image of the day
Post by: theoldinsane on July 05, 2013, 09:10:02 PM
"Funny" motive 1 can be found at my blog here:

http://theoldinsane.blogspot.se/2013/06/fv16-pac-man-2013-guestpost.html (http://theoldinsane.blogspot.se/2013/06/fv16-pac-man-2013-guestpost.html)

"Funny" motive 2 can be found here:

http://theoldinsane.blogspot.se/2013/07/fv17-two-species-close-to-extinction.html (http://theoldinsane.blogspot.se/2013/07/fv17-two-species-close-to-extinction.html)

I´m newbie on the Arctic "show" and I look at the development with enchantment mingled with terror. I do not have the skills to contribute, but I am grateful that this forum and Neven's blog exists. I learn new things every day from all of you.
Title: Re: Image of the Day
Post by: Espen on July 08, 2013, 08:14:15 PM
One of the Natural Beauties of Greenland Geikie Plateau and Dendritgletscher:

Title: Re: Image of the Day
Post by: Espen on July 09, 2013, 06:55:42 PM
And today we have the very rare Greenland Lynx:
Title: Re: Arctic Image of the Day
Post by: Espen on July 10, 2013, 09:56:54 AM
A mysterious shot of Jan Mayen Island:
Title: Re: Arctic Image of the Day
Post by: danp on July 10, 2013, 11:48:15 AM
I love the photos Espen!  keep them coming.
Title: Re: Arctic Image of the Day
Post by: Espen on July 10, 2013, 11:59:50 AM
Thanks DanP, I just want to reiterate that all are welcome to make their own contribution to Arctic Image of the day thread, the more the better!
Title: Re: Arctic Image of the Day
Post by: pikaia on July 10, 2013, 12:19:55 PM
On the animal theme, here is a Greenland goat:

(http://www.twanight.org/newTWAN/photos/3003766.jpg)
Title: Re: Arctic Image of the Day
Post by: Laurent on July 10, 2013, 12:34:27 PM
I see a beautiful dragon head (looking toward the left)
Title: Re: Arctic Image of the Day
Post by: Espen on July 10, 2013, 03:29:25 PM
Your Lucky Day?
Title: Re: Arctic Image of the Day
Post by: helorime on July 10, 2013, 04:20:48 PM
I have been looking at those elaborate swirls off the east coast of Greenland for some time.  What are they?
Title: Re: Arctic Image of the Day
Post by: Espen on July 10, 2013, 04:23:23 PM
Hello Helorime,

It is the last stage of sea ice melt.
Title: Re: Arctic Image of the Day
Post by: Phil. on July 10, 2013, 04:35:11 PM
I have been looking at those elaborate swirls off the east coast of Greenland for some time.  What are they?


It looks like a von Karman vortex street to me, see the link for a great animation.

http://en.wikipedia.org/wiki/Kármán_vortex_street (http://en.wikipedia.org/wiki/Kármán_vortex_street)

(http://envsci.rutgers.edu/~lintner/images/vonKarman_vortex.jpg)
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on July 12, 2013, 06:00:21 AM
I was looking on Modis r05c04 on 11/7/2013 and thinking it's a clear image, then took the 250m resolution and saw it was something else. contrast to maximum and here's the result. the cloud field itself (imho, all stratocumulus undulatus) expands to the neighboring tile and is about 1000km*400km in size or about the size and shape of state of California.
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on July 13, 2013, 06:04:14 AM
graphical art from NP 12.07.2013 (stiched 250m res images around NP) image area c. 445*445 km, contrast 100,  brightness -90, so even a bit grey ice vanishes from the view. don't know what the 'black stripe' is.
Title: Re: Arctic Image of the Day
Post by: helorime on July 14, 2013, 02:41:02 AM
Laughing man
Title: Re: Arctic Image of the Day
Post by: Espen on July 16, 2013, 10:28:33 AM
From Dove and Jøkelbugt:

Title: Re: Arctic Image of the Day
Post by: OldLeatherneck on July 16, 2013, 01:50:29 PM
We've all had days like this!!

(http://i1269.photobucket.com/albums/jj597/OldLeatherNeck/Greenland0014_zps2f8acba6.jpg)
Annual Greenlandic Dog Sled Races (1975)
https://forum.arctic-sea-ice.net/index.php/topic,127.0.html (https://forum.arctic-sea-ice.net/index.php/topic,127.0.html)
Title: Re: Arctic Image of the Day
Post by: Espen on July 16, 2013, 02:44:34 PM
Same procedure as last year and .......

The last sea ice of the season outside the Real Arctic Zone, Zaliv Akedemii / Akedemii Gulf Zaliv in the Sea of Othotsk.

Chince World Atlas: Akademii is a gulf in the region of Khabarovsk Krai, the country of Russia with an average elevation of -16 meter below sea level. The location is sparsely populated with 0 people per km2
Title: Re: Arctic Image of the Day
Post by: Neven on July 16, 2013, 02:53:02 PM
Is it my impression or did the sea ice persist very long there this year?

Here's one of the images in my collection:

(https://lh6.googleusercontent.com/-6oP44Q5t-Gw/UeVB-m3uvcI/AAAAAAAAA3U/2aBYt7rxpuQ/s856/webcamart.jpg)
Title: Re: Arctic Image of the Day
Post by: pikaia on July 16, 2013, 04:14:16 PM
We've all had days like this!!

([url]http://i1269.photobucket.com/albums/jj597/OldLeatherNeck/Greenland0014_zps2f8acba6.jpg[/url])
Annual Greenlandic Dog Sled Races (1975)
[url]https://forum.arctic-sea-ice.net/index.php/topic,127.0.html[/url] ([url]https://forum.arctic-sea-ice.net/index.php/topic,127.0.html[/url])


He probably wants to go at the front so that he gets a change of scenery!
Title: Re: Arctic Image of the Day
Post by: ivica on July 16, 2013, 05:04:36 PM
When did it escape from Loch Ness? :P (attached)
Title: Re: Arctic Image of the Day
Post by: Espen on July 18, 2013, 12:58:03 PM
I TOLD YOU!
Title: Re: Arctic Image of the Day
Post by: ivica on July 21, 2013, 01:12:03 AM
(http://psc.apl.washington.edu/northpole/NPEO2013/WEBCAM2/ARCHIVE/npeo_cam2_20130720193122.jpg)
Credits to: Phil (https://forum.arctic-sea-ice.net/index.php/topic,427.msg10220.html#msg10220).
Title: Re: Arctic Image of the Day
Post by: Espen on July 22, 2013, 03:03:27 PM
The "tropical" Islands of Franz Josef:

Title: Re: Arctic Image of the Day
Post by: Espen on July 22, 2013, 03:09:15 PM
Just a reminder,  we now reached the time of season when the algae farming is in progress:

Title: Re: Arctic Image of the Day
Post by: Neven on July 22, 2013, 05:17:27 PM
And there's one near Iceland as well:

(https://lh4.googleusercontent.com/-erz-IJT2WIk/Ue1MxOtispI/AAAAAAAAA4k/s2jFcWYjBpc/s400/bloomicelandjuly2013.jpg)

Beautiful, absolutely stunning. I use them as desktop backgrounds.
Title: Re: Arctic Image of the Day
Post by: Phil. on July 22, 2013, 11:33:04 PM
Check this one out! :D

(http://psc.apl.washington.edu/northpole/NPEO2013/WEBCAM2/ARCHIVE/npeo_cam2_20130722192515.jpg)
Title: Re: Arctic Image of the Day
Post by: Espen on July 22, 2013, 11:39:50 PM
Check this one out! :D

([url]http://psc.apl.washington.edu/northpole/NPEO2013/WEBCAM2/ARCHIVE/npeo_cam2_20130722192515.jpg[/url])

I belive it is the infamous Birdie Namkheng, look at post at the top!
Title: Re: Arctic Image of the Day
Post by: Espen on July 23, 2013, 12:20:36 AM
And here we have the Icy Jellyfish from Hudson Bay:
Title: Re: Arctic Image of the Day
Post by: Espen on July 23, 2013, 07:32:20 PM
And here is the amazing east coast of Greenland:

Please click on image to enlarge!
Title: Re: Arctic Image of the Day
Post by: Espen on July 26, 2013, 01:52:14 PM
Must be some kind of a dope party taking place in Siberia: 8)

Title: Re: Arctic Image of the Day
Post by: pikaia on July 27, 2013, 06:14:09 PM
Greenland from the air.

(http://i.dailymail.co.uk/i/pix/2013/07/27/article-2379989-1B02602E000005DC-629_964x522.jpg)
Title: Re: Arctic Image of the Day
Post by: Espen on July 27, 2013, 09:49:09 PM
NIce pick Pikaia.

The Heat is on, open the windows please!
Title: Re: Arctic Image of the Day
Post by: Espen on July 28, 2013, 09:59:31 AM
Another image of Jan Mayen Island, notice that mustage like cloud formation.
Title: Re: Arctic Image of the Day
Post by: SteveMDFP on July 28, 2013, 01:33:34 PM
Siberian wildfires, from today's arctic mosaic.  False-color shows smoke as rust-color. 
Hat-tip to Artful Dodger for predicting another fierce summer of Siberian fires. 

Title: Re: Arctic Image of the Day
Post by: Laurent on July 30, 2013, 09:39:12 PM
A massive algae blum ?
On the left Swalbard, on the right Scandinavia !
It is at least 800 km in lengh and 300 km wide ! ouahou !!!
Title: Re: Arctic Image of the Day
Post by: pikaia on July 31, 2013, 03:56:57 PM
(http://4.bp.blogspot.com/-QvY-NnY2Sik/UfaqNSITAwI/AAAAAAAACyc/7-Y2MN2oPlE/s640/BreathingEarth.gif)
Title: Re: Arctic Image of the Day
Post by: Artful Dodger on July 31, 2013, 06:57:49 PM
Siberian wildfires, from today's arctic mosaic.  False-color shows smoke as rust-color. 
Hat-tip to Artful Dodger for predicting another fierce summer of Siberian fires.

Hi Steve,

Even in visible wavelengths, the smoke is clearly visible. If anything, I think the extent of this year's Siberian fires is greater than last year. Then there's James Bay... :P
Title: Re: Arctic Image of the Day
Post by: SteveMDFP on August 01, 2013, 01:18:43 AM
Lodger,
I agree.  I check the mosaic image daily, and I don't recall any of last year's images looking so depressingly smoky.

Though last year, I think the worst of the fires was earlier, so soot may have affected melting more last year. 
Title: Re: Arctic Image of the Day
Post by: Laurent on August 01, 2013, 10:12:49 AM
Want some marshmallow?

Title: Re: Arctic Image of the Day
Post by: jdallen on August 01, 2013, 05:34:36 PM
Want some marshmallow?

Tell me... That loop in the North Atlantic crosses 55 degrees of latitude, doesn't it....

Break in the Farrell and Arctic cell circulation?
Title: Re: Arctic Image of the Day
Post by: Laurent on August 01, 2013, 05:59:05 PM
Yes that nice loop and the rest of the jet stream completely shattered !

Title: Re: Arctic Image of the Day
Post by: danp on August 01, 2013, 09:02:45 PM
MODIS/ASTER image from July 12th, from a frame in the Beaufort sea maybe 200 km north of the Alaskan coast.  Cropped image is full-resolution, 15m/pixel; full image is an overview of the 60x90km frame. 

ASTER has a narrow field of view and thus doesn't have full coverage of the Earth like Terra/Aqua.  In addition, free data access is pretty restrictive except for the US & territories, where level 1B data is fully open.  [EDIT:  I realized that was confusing.  Data taken over the US & territories (apparently extending out at least a little into the waters around Alaska) is fully open-access to anyone in the world.  Other data you have to pay for, or else you have to jump through a bunch of hoops before you get it.]

This is one of a swath of 5 frames, the only set since July 1st in open access and within the Arctic.  Converted from hdf using GDAL and then some gimp to combine, etc.


Title: Re: Arctic Image of the Day
Post by: Neven on August 01, 2013, 09:49:15 PM
Wow, one wonders how long it takes for that kind of ice to disappear.
Title: Re: Arctic Image of the Day
Post by: Peter Ellis on August 01, 2013, 10:38:42 PM
The take-home message I get from that is just how heterogeneous sea ice is.  Each one of those crazy white lines represents a ridge, which can be up to ten times the thickness of the flat grey/brown areas in between.  ~50% of the entire Arctic ice volume is in the ridges.  Eyeballing that picture, however good the resolution, isn't going to tell us that much about how much ice is actually there.  I guess this is why the ice models used in PIPS (and PIOMAS etc) model ice as a statistical distribution within each pixel, rather than a single value per pixel.

As for your question, it would help if we had even one more picture from the same satellite to compare!  Danp, where did you get it?  Are there any pictures available for previous years, where the subsequent melt behaviour is known?
Title: Re: Arctic Image of the Day
Post by: danp on August 01, 2013, 11:04:11 PM
The take-home message I get from that is just how heterogeneous sea ice is.  Each one of those crazy white lines represents a ridge, which can be up to ten times the thickness of the flat grey/brown areas in between.  ~50% of the entire Arctic ice volume is in the ridges.  Eyeballing that picture, however good the resolution, isn't going to tell us that much about how much ice is actually there.  I guess this is why the ice models used in PIPS (and PIOMAS etc) model ice as a statistical distribution within each pixel, rather than a single value per pixel.

As for your question, it would help if we had even one more picture from the same satellite to compare!  Danp, where did you get it?  Are there any pictures available for previous years, where the subsequent melt behaviour is known?


I totally agree.  It was eye-opening to see the crazy map of features at this detail level.  It may be asking a little much of this data source to find truly comparable images, but because of the built-in geographic restriction, if we can find any, they will at least be from nearly the same area of the southern Beaufort.  I only just decided to go digging.

The public data is available from REVERB (also one of my main sources for Terra/Aqua data), via geographic search.  Here's the search I did to find this data:

http://tinyurl.com/kyerueu (http://tinyurl.com/kyerueu)

The dataset is "L1B Registered Radiance at the sensor" (not the expedited equivalent).   The visible/near IR bands within the hdf file are 1, 2, 3N, 3B.  I used 3N, 2, 1 as RGB, but you don't gain much over just a grayscale image from ch. 1, which is in the green.  (3B is an offset backward-looking channel for stereoscopic images). 

I just repeated the search (July 1-31) as a repeated annual search since 2000 and came up with 358 results, including the 5 from  this year (2 of which are right at the shoreline or just inland).  So it does look like it might be a plausible project to compare ice at the southern edge of the Beaufort year-to-year in this fashion.
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on August 04, 2013, 09:39:48 AM
northpole hole with scale. 03.08.2013
Title: Re: Arctic Image of the Day
Post by: MOwens on August 05, 2013, 06:05:19 AM
O-Buoy 7:

(http://www.fairfaxclimatewatch.com/images/do_not_delete/polar%20bear%20640.png)
Title: Re: Arctic Image of the Day
Post by: danp on August 05, 2013, 07:48:14 AM
Hah!  well spotted!
Title: Re: Arctic Image of the Day
Post by: slow wing on August 05, 2013, 09:47:01 AM
No way!!  ;D

What a great photo!

Title: Re: Arctic Image of the Day
Post by: Whit on August 05, 2013, 10:35:52 AM
O-Buoy 7[/img]
Awesome :)
Title: Re: Arctic Image of the Day
Post by: PhilDPortsmouth on August 05, 2013, 12:45:46 PM
Brilliant - well spotted
Title: Re: Arctic Image of the Day
Post by: jai mitchell on August 07, 2013, 02:27:19 AM
2013B got taken down by a polar bear

(http://psc.apl.washington.edu/northpole/NPEO2013/9.jpg)

See the footprints in the previous image?

(http://psc.apl.washington.edu/northpole/NPEO2013/8.jpg)

 :) :) :) :)
Title: Re: Arctic Image of the Day
Post by: Vergent on August 07, 2013, 04:04:15 PM
jai,

If you take the image link from the archive rather than the gallery, they will not change from day to day.

V
Title: Re: Arctic Image of the Day
Post by: Patrick on August 07, 2013, 11:24:03 PM
This image of course doesn't show some tropical islands (which you may recognize by the slushy ice surrounding them  ;)), but rather pictures the northeastern part of Foxe Basin with Prince Charles Island in the middle. No wonder this region is rich in wildlife, it seems to be quite a beautiful place...

Image Source: NASA Worldview (http://earthdata.nasa.gov/labs/worldview/?map=-1800000,-2540160,-831296,-1591936&products=baselayers,!MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_CorrectedReflectance_TrueColor~overlays,!arctic_coastlines_3413&time=2013-08-07&switch=arctic)
Title: Re: Arctic Image of the Day
Post by: jdallen on August 08, 2013, 07:42:09 PM
A couple of remarkable images.  'Before' and 'after':

http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r02c03.2013120.terra (http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r02c03.2013120.terra)

http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r02c03.2013220.terra (http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r02c03.2013220.terra)

Title: Re: Arctic Image of the Day
Post by: Shared Humanity on August 09, 2013, 01:21:52 AM
This image of course doesn't show some tropical islands (which you may recognize by the slushy ice surrounding them  ;)), but rather pictures the northeastern part of Foxe Basin with Prince Charles Island in the middle. No wonder this region is rich in wildlife, it seems to be quite a beautiful place...

Image Source: NASA Worldview ([url]http://earthdata.nasa.gov/labs/worldview/?map=-1800000,-2540160,-831296,-1591936&products=baselayers,[/url]!MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_CorrectedReflectance_TrueColor~overlays,!arctic_coastlines_3413&time=2013-08-07&switch=arctic)


Is that old man winter south of Prince Charles Island?
Title: Re: Arctic Image of the Day
Post by: Apocalypse4Real on August 09, 2013, 06:57:25 AM
Are we seeing soot, or algae bloom in this ESS picture from August 8, 2013?
Title: Re: Arctic Image of the Day
Post by: MOwens on August 11, 2013, 12:41:00 AM
sea ice graph reinterpreted "Dancing on the beast's nose":


(http://www.fairfaxclimatewatch.com/images/do_not_delete/dancing%20on%20the%20beasts%20nose.png)
Title: Re: Arctic Image of the Day
Post by: MOwens on August 11, 2013, 12:55:12 AM
I think any soot should be mostly invisible once in the water...although it could in theory trigger an algae bloom:

"During the initial firestorm, phosphorus and nitrogen levels increased 5- to 60-fold above background levels resulting from aerial deposition from smoke and ash. Nutrients returned to background concentrations within several weeks after the fire."  http://www.fs.fed.us/rm/boise/research/fisheries/fire/FAE%20Papers/spencer_final.pdf (http://www.fs.fed.us/rm/boise/research/fisheries/fire/FAE%20Papers/spencer_final.pdf)

Nitrogen and phosphorus especially are critical elements for the algae. Carbon is too for that matter.
Title: Re: Arctic Image of the Day
Post by: Vergent on August 11, 2013, 03:23:51 PM
(http://icefloe.net/Aloftcon_Photos/albums/2013/20130811-1401.jpeg)

USCGC Healy heading north toward the setting sun!

V
Title: Re: Arctic Image of the Day
Post by: danp on August 11, 2013, 05:11:45 PM
Nice!  AMSR2 gives the pack edge there as 75° N.  If there aren't any more detours, they should reach it tomorrow.  It'll be nice to get a real look at the ice.

-Dan
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on August 12, 2013, 04:19:50 PM
I've been playing with the image processing software using the maps provided by Wipneus attempting to locate fastest melt-areas. Here's one try that might actually be pretty close. Too bad I don't anymore remember the steps... 09082013 and 10082013 (rescale, difference, multiply, black and white, inverse what not.) three layers had to be used to get the island showing again properly. Nice to see some individual floes in there.
 
Title: Re: Arctic Image of the Day
Post by: Wipneus on August 12, 2013, 04:36:47 PM
I've been playing with the image processing software using the maps provided by Wipneus attempting to locate fastest melt-areas. Here's one try that might actually be pretty close. Too bad I don't anymore remember the steps... 09082013 and 10082013 (rescale, difference, multiply, black and white, inverse what not.) three layers had to be used to get the island showing again properly. Nice to see some individual floes in there.

I am not sure that you are aware that I provided png's in https://sites.google.com/site/apamsr2/home/pngcby32 (https://sites.google.com/site/apamsr2/home/pngcby32). They are there, intended the users (in particular A-Team on the ASIB), that like to play withstudy the images but don't want to process the NetCDF files themselves.
Ice concentration 0-100% corresponds to 0-255 in the image files.

Title: Re: Arctic Image of the Day
Post by: Pmt111500 on August 13, 2013, 06:34:31 AM
I am not sure that you are aware that I provided png's in https://sites.google.com/site/apamsr2/home/pngcby32. They are there, intended the users (in particular A-Team on the ASIB), that like to play withstudy the images but don't want to process the NetCDF files themselves.
Ice concentration 0-100% corresponds to 0-255 in the image files.

Oh, thanks! I wasn't aware of those! Very cool maps.
Title: Re: Arctic Image of the Day
Post by: pearscot on August 13, 2013, 07:35:24 AM
Sorry for not being able to post the direct picture, but it looks like the melt pond has reformed extremely rapidly. I had no idea these could develop literally over night. (http://psc.apl.washington.edu/northpole/NPEO2013/18.jpg)
Title: Re: Arctic Image of the Day
Post by: Peter Ellis on August 13, 2013, 08:55:01 AM
Huh? No pond there or on any of the recent archive pics. Quite the opposite: snow is accumulating.
Title: Re: Arctic Image of the Day
Post by: Artful Dodger on August 13, 2013, 09:59:04 AM
Hi pearscot,

The image you posted is a live link, which is recycled about every 24 hrs. It (much like the sea ice) is ephemeral, and will not last.  ;)

If you wish to link to the images on the PSC website, you need to post the link to the permanent archive (http://psc.apl.washington.edu/northpole/NPEO2013/WEBCAM2/ARCHIVE/) (go the the very bottom for the latest images).

Did you mean to refer to this image? (taken Mon Aug 12 18:53:02 UTC)

(http://psc.apl.washington.edu/northpole/NPEO2013/WEBCAM2/ARCHIVE/npeo_cam2_20130812185248.jpg)
Title: Re: Arctic Image of the Day
Post by: Espen on August 14, 2013, 06:57:20 PM
Watson River / Greenland

Remember the floods in 2012?

http://www.dmi.dk/nyheder/arkiv/nyheder-2013/7/broen-over-watson-floden-et-aar-efter-alt-aander-igen-fred-og-idyl/ (http://www.dmi.dk/nyheder/arkiv/nyheder-2013/7/broen-over-watson-floden-et-aar-efter-alt-aander-igen-fred-og-idyl/)
Title: Re: Arctic Image of the Day
Post by: Neven on August 14, 2013, 10:43:16 PM
Okay, folks, you can drive your tractors and backhoes over the bridge now!  ;D

What a difference! Last year was really insane.
Title: Re: Arctic Image of the Day
Post by: OldLeatherneck on August 14, 2013, 10:53:09 PM
Okay, folks, you can drive your tractors and backhoes over the bridge now!  ;D

What a difference! Last year was really insane.

Wait a few years........some day we will all look back at 2012 and think that it was just a "Wall in the Park".
Title: Re: Arctic Image of the Day
Post by: Chuck Yokota on August 20, 2013, 03:50:15 PM
A glimpse of the North Pole today:

Title: Re: Arctic Image of the Day
Post by: Espen on August 20, 2013, 03:52:35 PM
It looks like cottage cheese ::)
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on August 20, 2013, 04:07:40 PM
It looks like cottage cheese ::)

I'm not sure where but someone commented on the look of the ice across the CAB. They noted that the ice had generally large and dispersed rounded flows surrounded by mush (bergy bits, rotten ice etc.) They suggested this appearance over such a wide expanse was new.

Given the new, pronounced mobility of ice in the CAB, could the multiple cyclones (relatively mild as compared to GAC2012)  have caused a significant mixing of the remaining MYI and FYI in the CAB? The larger rounded flows would be the remaining, relatively solid MYI, rounded by the enhanced wave action as the MYI was jostled about. The broken up ice would be the FYI that has been pulverized by the cyclones of 2013.
Title: Re: Arctic Image of the Day
Post by: jdallen on August 20, 2013, 06:03:38 PM
It looks like cottage cheese ::)

I'm not sure where but someone commented on the look of the ice across the CAB. They noted that the ice had generally large and dispersed rounded flows surrounded by mush (bergy bits, rotten ice etc.) They suggested this appearance over such a wide expanse was new.

Given the new, pronounced mobility of ice in the CAB, could the multiple cyclones (relatively mild as compared to GAC2012)  have caused a significant mixing of the remaining MYI and FYI in the CAB? The larger rounded flows would be the remaining, relatively solid MYI, rounded by the enhanced wave action as the MYI was jostled about. The broken up ice would be the FYI that has been pulverized by the cyclones of 2013.

I'd say there may be merit to your observation.
Title: Re: Arctic Image of the Day
Post by: Artful Dodger on August 21, 2013, 12:33:19 AM
I'm not sure where but someone commented on the look of the ice across the CAB. They noted that the ice had generally large and dispersed rounded flows surrounded by mush (bergy bits, rotten ice etc.) They suggested this appearance over such a wide expanse was new.

Yes, that would be Werther. He has tracked large individual floes with his Autocad technique over several seasons.

Just one note of caution on the use of terminology. A 'bergy bit (http://www.ccg-gcc.gc.ca/e0010735)' is a remnant of an ice berg. Being fresh water ice, they are dramatically different than sea ice. Bergy bits mostly originate in Baffin Bay and are found in the NFLD sea and the N. Atlantic ocean.

Now that the great ice shelves on the North edge of the CAA have disappeared, there are almost no bergy bits deposited into the Central Arctic Basin.
Title: Re: Arctic Image of the Day
Post by: LarsBoelen on August 21, 2013, 05:12:32 PM
The North Pole showed up as a bathtub full of floating cottage cheese, but the MYI north of Greenland was visible on EOSDIS for the first time in a long time yesterday, and to me that area looks just as spectaculair, it's shattered:
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on August 21, 2013, 08:03:08 PM
The North Pole showed up as a bathtub full of floating cottage cheese, but the MYI north of Greenland was visible on EOSDIS for the first time in a long time yesterday, and to me that area looks just as spectaculair, it's shattered:

How large are the flows? Isn't it normal for stress fractures to occur in the ice?
Title: Re: Arctic Image of the Day
Post by: LarsBoelen on August 21, 2013, 09:17:13 PM
SH,

I'm really a newby Pole watcher (2nd year) so I don't know what normal is. And I know stress fractures in ice only from skating (i'm Dutch): your skate-blade fits in one. The fracture in the middle of the image is 80-100km kilometers long, and more than a kilometer wide. It triggered my interest, because I thought that the thick multi year ice would sort of remain a solid mass, but apparently not, learning something new every day.
Title: Re: Arctic Image of the Day
Post by: Vergent on August 21, 2013, 09:48:49 PM
Lars,

Welcome to the forum. Be sure and familiarize yourself with the data and image resources. A lot of them can be found at Neven's ASIG;

https://sites.google.com/site/arcticseaicegraphs/

The sea ice always cracked up and moving. More so in summer than winter. The permanent ice shelves are in rapid retreat.

Vergent



Title: Re: Arctic Image of the Day
Post by: Pmt111500 on August 22, 2013, 03:19:45 PM
from a fresh Aqua/MODIS image
Title: Re: Arctic Image of the Day
Post by: Espen on August 22, 2013, 03:38:14 PM
Yes! Nordostrundingen upside down ;)
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on August 22, 2013, 06:04:49 PM
SH,

I'm really a newby Pole watcher (2nd year) so I don't know what normal is. And I know stress fractures in ice only from skating (i'm Dutch): your skate-blade fits in one. The fracture in the middle of the image is 80-100km kilometers long, and more than a kilometer wide. It triggered my interest, because I thought that the thick multi year ice would sort of remain a solid mass, but apparently not, learning something new every day.

I am a newbie as well, been visiting here for a little over a year. I tend to post questions when I post because I am clear that most here know more than me.
Title: Re: Arctic Image of the Day
Post by: theoldinsane on August 22, 2013, 09:47:09 PM
What is this? An extraterrestrial insect or spacecrap or?

(https://lh3.googleusercontent.com/-o8fCJ06VahM/UhUsSQ6gDMI/AAAAAAAAA-8/Rk6QbwJEi20/s325/image001.png)

I found it at http://www.arctic.io/split-zoom/ (http://www.arctic.io/split-zoom/) (aug 21) with max zoom and my browser at 200 %.

(https://lh3.googleusercontent.com/-UqXyOHYN9G4/UhUsSb9wGiI/AAAAAAAAA_A/W8VObA47ecs/s848/image004.jpg)

I think anyone could find it, but you have to zoom in a lot to see it.

Found it also on august 19th to SSE and august 18th to SSW and august 17th  to NNW.

Any ideas?
Title: Re: Arctic Image of the Day
Post by: Espen on August 22, 2013, 10:11:16 PM
theoldinsane,

Hi, I do see them often, and when you use that link you provided above you also find them on the ice sheet to the left, I believe it is a digital error often seen in the jpg.file format.
Title: Re: Arctic Image of the Day
Post by: ivica on August 22, 2013, 10:13:45 PM
theoldinsane, that reminds me on artifacts I see quite often, for example August 10, 2013.
NASA Worldview cropped sample (attached) shows 3 of them.
A markers or artifacts of processing, my opinion.
(I see, Espen was faster)
Title: Re: Arctic Image of the Day
Post by: danp on August 22, 2013, 10:17:37 PM
Very likely it was a small section of a linear seam between two adjacent swaths that were stitched to make the mosaic.  Then the jpg compression produced the extra noise as Espen said.

When I produce mosaics there are usually small sections of 1-2 pixel seams that result from choices the reprojection software makes about where to place border pixels, and I have to intentionally remove them by filling with average neighbor values.  You can still see remnants of them on my 8-day composites because I use a light hand on the filling procedure so that larger data dropouts aren't obscured.
Title: Re: Arctic Image of the Day
Post by: theoldinsane on August 22, 2013, 10:41:34 PM
Espen, ivica , danp

Ok, maybe so. But do you have any proof that those things not are extraterrestrial insects?  ;)

Remember that NASA didn´t found the ozone hole because they dismissed some of the data they recieved from satellite observations. The ozone hole was found by an amateurish observer on the ground.
Title: Re: Arctic Image of the Day
Post by: TerryM on August 22, 2013, 11:24:39 PM
I think what we've been seeing is discarded chariot whips used by Helios on this daily ride. All the views we have are from satellites that follow the Sun quite closely so these are being found close to his path. Hopefully the steeds wear diapers.
Terry
Title: Re: Arctic Image of the Day
Post by: Vergent on August 23, 2013, 12:42:56 AM
The original image lacks the contrast to go from black to white in one pixel. Therefore it must be an artifact of image processing, and alas not a godly artifact.

Vergent

Title: Re: Arctic Image of the Day
Post by: Shared Humanity on August 23, 2013, 01:36:02 AM
It looks like stairs to me.
Title: Re: Arctic Image of the Day
Post by: jdallen on August 23, 2013, 09:49:04 AM
theoldinsane,

Hi, I do see them often, and when you use that link you provided above you also find them on the ice sheet to the left, I believe it is a digital error often seen in the jpg.file format.

Likewise, I bet on it being a media artifact.  Sorry, alien insects are all off eating purple weeds on Adelbaran.
Title: Re: Arctic Image of the Day
Post by: Xyrus on August 23, 2013, 08:56:54 PM
theoldinsane,

Hi, I do see them often, and when you use that link you provided above you also find them on the ice sheet to the left, I believe it is a digital error often seen in the jpg.file format.

Likewise, I bet on it being a media artifact.  Sorry, alien insects are all off eating purple weeds on Adelbaran.

Thanks for sending them. Now I don't have to weed my garden!

Sincerely,
Plaxbog Balgor, Adelbaran
Title: Re: Arctic Image of the Day
Post by: Phil. on August 24, 2013, 06:33:10 PM
Espen, ivica , danp

Ok, maybe so. But do you have any proof that those things not are extraterrestrial insects?  ;)

Remember that NASA didn´t found the ozone hole because they dismissed some of the data they recieved from satellite observations. The ozone hole was found by an amateurish observer on the ground.

Farman was no amateur, he was a very meticulous scientist who compiled a long series of measurements which enabled him to discover the 'hole', while working for the British Antarctic Survey.
Title: Re: Arctic Image of the Day
Post by: Espen on August 27, 2013, 08:47:05 PM


Just in from Chile: Rare snow falls in Atacama desert of Chile :

https://www.youtube.com/watch?v=SoBiurKODkM (https://www.youtube.com/watch?v=SoBiurKODkM)
Title: Re: Arctic Image of the Day
Post by: Vergent on August 29, 2013, 06:06:29 AM
(http://i.imgur.com/TzcpYzS.jpg)

Don't know if he's heading to the arctic, but it is my picture of the day.

Vergent
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on August 29, 2013, 12:41:37 PM
There's a new shipping route opening shortly, here's a map, due to the nature of the area the route is drawn only approximately. Note that the route maybe used by those ships only that are class I in the durability classification (http://en.wikipedia.org/wiki/Ice_class (http://en.wikipedia.org/wiki/Ice_class)) since the route might contain some ice.
Title: Re: Arctic Image of the Day
Post by: Artful Dodger on August 29, 2013, 12:57:17 PM
Oh ha ha. Shipping routes!  ::)

Sovcomflot GUARANTEES passage through the Northern Sea Route for 6 months per year now.
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on August 29, 2013, 01:57:12 PM

Sovcomflot GUARANTEES passage through the Northern Sea Route for 6 months per year now.

dear Lodger, I meant unassisted! :-P
Title: Re: Arctic Image of the Day
Post by: Espen on August 29, 2013, 02:47:40 PM
Found this turquoise, on my way:

Please click on image to enlarge.
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on August 29, 2013, 08:08:09 PM
Yes, that's about too beautiful to confine Andres Breivik. :-|
Title: Re: Arctic Image of the Day
Post by: Espen on August 30, 2013, 10:33:59 AM
A nice video about naming storms:

Please click at point below (�n).
http://www.youtube.com/watch?v=efAUCG9oTb8#t=125 (http://www.youtube.com/watch?v=efAUCG9oTb8#t=125)
Title: Re: Arctic Image of the Day
Post by: iwantatr8 on September 04, 2013, 07:56:27 AM
Quite liking this intriguing hole in the clouds today



Title: Re: Arctic Image of the Day
Post by: jdallen on September 04, 2013, 08:35:19 AM
Quite liking this intriguing hole in the clouds today

[Raises skeptical eyebrow]

Lance-Modis frame and date?
Title: Re: Arctic Image of the Day
Post by: Neven on September 04, 2013, 08:55:50 AM
Nice!
Title: Re: Arctic Image of the Day
Post by: iwantatr8 on September 04, 2013, 11:54:33 AM
Quite liking this intriguing hole in the clouds today


[Raises skeptical eyebrow]

Lance-Modis frame and date?


Find it here:
http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r05c03.2013246.terra.250m
 (http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r05c03.2013246.terra.250m)
Bottom right corner.
Title: Re: Arctic Image of the Day
Post by: seattlerocks on September 04, 2013, 03:53:12 PM
It seems real, see the rounded shape of the shadow border over the ice.
Maybe an air jet through the clouds did that? But what caused the jet??
Title: Re: Arctic Image of the Day
Post by: weatherintel on September 04, 2013, 04:47:37 PM
These 'punch' holes are normally caused by military A/C during rapid ascent - tho there may be something else going on here that I have not come across before.
Title: Re: Arctic Image of the Day
Post by: Atomant on September 04, 2013, 07:23:51 PM
You beat me to it! *note to self- must come to the forum more often

As well as the Punch hole  there are 2 intriguing small vortices nearby. They are odd because of their size. A person standing under the smaller vortex would have seen a cloud spiral above him/her. Is this normal in the Arctic?
Title: Re: Arctic Image of the Day
Post by: jdallen on September 04, 2013, 07:58:17 PM
You beat me to it! *note to self- must come to the forum more often

As well as the Punch hole  there are 2 intriguing small vortices nearby. They are odd because of their size. A person standing under the smaller vortex would have seen a cloud spiral above him/her. Is this normal in the Arctic?

That is just weird.  The hole is entirely to regular, and looks to be tens of KM wide.  There is a visible spiral curling into it if you look closely.  I wish I could see the winds.  The only analog I come up with is the eye of a storm... I think it is far too large and regular for a MA punch hole.
Title: Re: Arctic Image of the Day
Post by: Vergent on September 04, 2013, 09:19:00 PM
Possibly caused by a meteor strike. There is what looks like the shadow of a contrail nearby.

Vergent
Title: Re: Arctic Image of the Day
Post by: ChrisReynolds on September 04, 2013, 09:29:19 PM
I find it really hard to work out where land and islands are on these plots. But above* the hole is what looks like a Von Karman vortex chain.
http://en.wikipedia.org/wiki/K%C3%A1rm%C3%A1n_vortex_street (http://en.wikipedia.org/wiki/K%C3%A1rm%C3%A1n_vortex_street)

Taking image saturation right up in 367 bands shows what looks like an open vortex (one swirl above the hole) covered by thin higher cloud.

I suspect it's due to turbulence from a Von Karman chain (which apparently is called a 'street') due to the New Siberian Islands. Someone with better knowledge of the geography of these grid boxes will be able to correct me if those islands are in totally the wrong place.

* by 'above' I mean scroll upwards from the hole.
Title: Re: Arctic Image of the Day
Post by: ChrisReynolds on September 04, 2013, 09:45:58 PM
Fairly sure I'm right now.

From WetterZentrale:
http://www.wetterzentrale.de/topkarten/fsavnnh.html (http://www.wetterzentrale.de/topkarten/fsavnnh.html)

(http://farm4.staticflickr.com/3787/9672250281_b40ca45267_o.png)

High and low pressure form a dipole flow, the day before isobars constricted over the islands, the dipole flow has carried the turbulent air into that region.
Title: Re: Arctic Image of the Day
Post by: ivica on September 04, 2013, 10:00:23 PM
Possibly caused by a meteor strike. There is what looks like the shadow of a contrail nearby.

Vergent

Meteorites are around, one passed above my location a hour ago.
How large meteorite should be to make such a hole of several km in diameter ?
Too big to pass unnoticed by astronomers I guess.

Chris's idea seems more likely to me.
Title: Re: Arctic Image of the Day
Post by: slow wing on September 05, 2013, 12:24:20 AM
Spectacular image! And a very nice explanation, Chris.
Title: Re: Arctic Image of the Day
Post by: Vergent on September 05, 2013, 01:18:33 AM
Possibly caused by a meteor strike. There is what looks like the shadow of a contrail nearby.

Vergent


Meteorites are around, one passed above my location a hour ago.
How large meteorite should be to make such a hole of several km in diameter ?
Too big to pass unnoticed by astronomers I guess.

Chris's idea seems more likely to me.


It would be the supersonic shock wave, not the meteor itself. But, there is a better explination. it is a fallstreak hole.

http://en.wikipedia.org/wiki/Fallstreak_hole (http://en.wikipedia.org/wiki/Fallstreak_hole)

They can be caused by ice crystals from the contrail of a passing airplane. Its kind of a chain reaction caused by the latent heat of freezing evaporating condensed water.

Vergent
Title: Re: Arctic Image of the Day
Post by: seattlerocks on September 06, 2013, 07:48:33 PM
I didn't really understand your karman vortices explanation, Chris, but I just found this picture of cloud "punch holes". Wow

http://goo.gl/xeiBWG (http://goo.gl/xeiBWG)
Title: Re: Arctic Image of the Day
Post by: Espen on September 06, 2013, 09:08:18 PM
Our PII-2012 is now released, into the wild world down south:
Title: Re: Arctic Image of the Day
Post by: ChrisReynolds on September 07, 2013, 07:13:52 AM
I didn't really understand your karman vortices explanation, Chris, but I just found this picture of cloud "punch holes". Wow

[url]http://goo.gl/xeiBWG[/url] ([url]http://goo.gl/xeiBWG[/url])


If the air flow is across a flat surface (like the ocean) it flows straight. Put an island in the way and the wind 'whips' around the island which creates turbulence in the atmosphere downstream o
of the island. Those punch holes are exactly what I think the hole we saw in the MODIS images was.
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on September 10, 2013, 05:20:19 AM
section of the Greenland today cumulative meltdays map until Sept-8th (NSDIC/Thomas Mote/University of Georgia), tried to make the scale all red, but aha, the original scale shows in the edges of the tetris blocks.
Title: Re: Arctic Image of the Day
Post by: jdallen on September 10, 2013, 05:01:27 PM
section of the Greenland today cumulative meltdays map until Sept-8th (NSDIC/Thomas Mote/University of Georgia), tried to make the scale all red, but aha, the original scale shows in the edges of the tetris blocks.

Actually... It kinda works...
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on September 10, 2013, 05:46:50 PM
section of the Greenland today cumulative meltdays map until Sept-8th (NSDIC/Thomas Mote/University of Georgia), tried to make the scale all red, but aha, the original scale shows in the edges of the tetris blocks.

Could you show northeast Greenland where a lot of interesting fast ice activity is occurring?
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on September 10, 2013, 06:43:07 PM
Could you show northeast Greenland where a lot of interesting fast ice activity is occurring?

Sorry, didn't save the whole image.
Title: Re: Arctic Image of the Day
Post by: jdallen on September 10, 2013, 07:25:05 PM
Could you show northeast Greenland where a lot of interesting fast ice activity is occurring?

Sorry, didn't save the whole image.


I think if you snoop through Lance Modis  looking for cloud free images, you'll find there is precious little fast ice left. A few samples:

http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r03c03.2013249.terra.1km (http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r03c03.2013249.terra.1km)

http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r03c03.2013252.terra.1km (http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r03c03.2013252.terra.1km)

http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r03c03.2013252.terra.367.250m.jpg&vectors=coast (http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r03c03.2013252.terra.367.250m.jpg&vectors=coast)
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on September 10, 2013, 11:36:58 PM
Could you show northeast Greenland where a lot of interesting fast ice activity is occurring?

Sorry, didn't save the whole image.


I think if you snoop through Lance Modis  looking for cloud free images, you'll find there is precious little fast ice left. A few samples:

[url]http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r03c03.2013249.terra.1km[/url] ([url]http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r03c03.2013249.terra.1km[/url])

[url]http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r03c03.2013252.terra.1km[/url] ([url]http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r03c03.2013252.terra.1km[/url])

[url]http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r03c03.2013252.terra.367.250m.jpg&vectors=coast[/url] ([url]http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r03c03.2013252.terra.367.250m.jpg&vectors=coast[/url])


jdallen..........I've been following your many posts this summer on the loss of fast ice. I was just curious what the land melt looked like in this area of Greenland as well. Does it show an increasing number of days of land melt?
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on September 11, 2013, 07:49:35 AM
Here you go (original by NSDIC/Thomas Mote/University of Georgia), apparently the daily map has dark squares that are not on the scale, I'll presume these would be the squares having most melt days.
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on September 11, 2013, 02:07:56 PM
Here you go, apparently the daily map has dark squares that are not on the scale, I'll presume these would be the squares having most melt days.

Thanks.
Title: Re: Arctic Image of the Day
Post by: iamlsd on September 13, 2013, 04:05:42 AM
1st post from long time lurker - NSIDC closed
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on September 13, 2013, 04:06:55 PM
NSIDC closed


It was closed yesterday also. For more on the reasons why, including an animated "atmospheric river", see:

http://econnexus.org/biblical-floods-in-boulder-close-nsidc/ (http://econnexus.org/biblical-floods-in-boulder-close-nsidc/)
Title: Re: Arctic Image of the Day
Post by: Espen on September 17, 2013, 03:07:04 PM
Winter is coming to Kimmirut:
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on September 21, 2013, 07:58:04 PM
Some Central Arctic Art (http://greatwhitecon.info/2013/09/central-arctic-art/):
Title: Re: Arctic Image of the Day
Post by: diablobanquisa on September 22, 2013, 12:03:23 AM
A ship near the NP2? Or what is that?
(Click the image for a larger version)

(http://psc.apl.washington.edu/northpole/NPEO2013/WEBCAM2/ARCHIVE/npeo_cam2_20130921053511.jpg) (http://psc.apl.washington.edu/northpole/NPEO2013/WEBCAM2/ARCHIVE/npeo_cam2_20130921053511.jpg)


Title: Re: Arctic Image of the Day
Post by: Jim Hunt on September 22, 2013, 12:34:40 AM
A ship near the NP2? Or what is that?

It looks a lot like an icebreaker to me!
Title: Re: Arctic Image of the Day
Post by: slow wing on September 22, 2013, 01:20:13 AM
It appears to have a whole lot of jagged features, like roots.


My guess is that a polar bear has dragged a tree stump into the Arctic and placed it in front of the cam...  :o


Title: Re: Arctic Image of the Day
Post by: slow wing on September 22, 2013, 01:33:47 AM
A ten minute span between images and it hasn't moved a jot...

(http://psc.apl.washington.edu/northpole/NPEO2013/WEBCAM2/ARCHIVE/npeo_cam2_20130921052510.jpg)

(http://psc.apl.washington.edu/northpole/NPEO2013/WEBCAM2/ARCHIVE/npeo_cam2_20130921053511.jpg)


Yep, presumably Jim is right and it is an ice breaker. Some ice blots on the lens appear to have partly disguised its profile.

Nice spot!
Title: Re: Arctic Image of the Day
Post by: Neven on September 22, 2013, 12:23:47 PM
I think it's Godzilla's head.  ;)
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on September 22, 2013, 01:25:22 PM
No more images since then. Perhaps Godzilla ate the cam?
Title: Re: Arctic Image of the Day
Post by: Espen on September 30, 2013, 06:35:46 PM
"Stars" over Scoresbysund, East Greenland:

Title: Re: Arctic Image of the Day
Post by: Jim Hunt on October 05, 2013, 04:15:37 PM
The Lena delta and thereabouts refreezing. Courtesy of Aqua via Worldview (https://earthdata.nasa.gov/labs/worldview/?map=-93491.649418,1862261.756092,376268.350582,2128245.756092&products=baselayers,MODIS_Aqua_CorrectedReflectance_Bands721~overlays,arctic_graticule_3413,arctic_coastlines_3413&time=2013-10-05&switch=arctic):
Title: Re: Arctic Image of the Day
Post by: Laurent on October 07, 2013, 02:31:17 PM
A new island on the coast of Pakistan since the 25 september !
 (2013 - CNES – Distribution Astrium Services / Spot Image)
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on October 12, 2013, 02:52:24 PM
http://stratus.ssec.wisc.edu/products/rtpolarwinds/ (http://stratus.ssec.wisc.edu/products/rtpolarwinds/) day 285 most images stacked to get some view of the arctic. didn't bother to try to get the wind markers out, to honor republican shutdown of NASA sites and EPA.
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on October 12, 2013, 03:04:14 PM
http://www.sat.dundee.ac.uk/ (http://www.sat.dundee.ac.uk/) might provide some images. I haven't registered yet though.
Title: Re: Arctic Image of the Day
Post by: pikaia on October 14, 2013, 01:12:54 AM
(http://img0.mxstatic.com/concours-photo/l-image-du-geographe-adrian-luckmande-represente-une-modelisation-coloree-des-deplacements-des-glaces-de-kronebreen-un-glacier-d-arctique_60548_w460.jpg)

Kronebreen, the fastest-flowing glacier on Spitsbergen, with radar images taken 11 days apart.
http://www.bbc.co.uk/news/uk-wales-24511764 (http://www.bbc.co.uk/news/uk-wales-24511764)
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on October 15, 2013, 05:02:04 PM
While not strictly only an arctic species, this might do as a response to "cycles" that are only statistically proven, they seem to have decided to gather here just before migration. "oh, geese". Branta leucopsis, Mare Balticum (11.10.2013) Shown possibly  is  also one B. ruficollis, but I didn't find it in here nor in the other two similarly sized flocks residing nearby.
Title: Re: Arctic Image of the Day
Post by: Laurent on October 18, 2013, 01:29:14 PM
"The water bear" by Paul Souders (United States)

The fact that most of the pictures show the polar bear on land or on ice tells us more about the practical difficulties encountered by humans for the photograph on the behavior of the mammal. In fact, it spends a lot of time in the water and can swim for hours. To correct this bias, Paul Souders followed a three-day bear in Hudson Bay before capture its passage under the ice.

from (french) : http://www.lemonde.fr/planete/portfolio/2013/10/17/l-essence-des-elephants-meilleure-photo-animale-de-l-annee_3497282_3244.html (http://www.lemonde.fr/planete/portfolio/2013/10/17/l-essence-des-elephants-meilleure-photo-animale-de-l-annee_3497282_3244.html)
Title: Re: Arctic Image of the Day
Post by: Espen on October 18, 2013, 01:39:16 PM
Great image Laurent! ;)
Title: Re: Arctic Image of the Day
Post by: lanevn on October 29, 2013, 12:35:36 PM
Can you give link to a most precise satellite arctic map?
Title: Re: Arctic Image of the Day
Post by: anonymous on October 29, 2013, 01:26:34 PM
Can you give link to a most precise satellite arctic map?

Yesterday: http://lance-modis.eosdis.nasa.gov/imagery/subsets/?mosaic=Arctic.2013301.terra.250m.jpg (http://lance-modis.eosdis.nasa.gov/imagery/subsets/?mosaic=Arctic.2013301.terra.250m.jpg)

HUGE FILE!
Title: Re: Arctic Image of the Day
Post by: lanevn on October 29, 2013, 01:40:59 PM
Thanks a lot. One pixel is 250m?
Title: Re: Arctic Image of the Day
Post by: anonymous on October 29, 2013, 04:35:39 PM
Thanks a lot. One pixel is 250m?

Yes. 500m, 1km, 2km, 4km works too.
Title: Re: Arctic Image of the Day
Post by: Andreas T on October 29, 2013, 05:39:11 PM
Is there a version which assembles cloud free images rather than images of a single day? I seem to remember seeing that posted.
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on October 31, 2013, 04:28:50 AM
Andreas T "which assembles cloud free images ", those ones were done by a member of the site, assembling  photos obtained during a week or so... Then there has been a Canadian site that does this too, I don't know it's status now when the Visual Spectrum channel in the north is pretty much obscured by the earth's shadow. those were (if I remember correctly) on 1km resolution.
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on October 31, 2013, 02:06:15 PM
Is there a version which assembles cloud free images rather than images of a single day? I seem to remember seeing that posted.


See http://forum.arctic-sea-ice.net/index.php/topic,440 (http://forum.arctic-sea-ice.net/index.php/topic,440) and http://www.arctic.io/clear-sky-zoom/ (http://www.arctic.io/clear-sky-zoom/)

Now all we need is the AVHRR equivalent!
Title: Re: Arctic Image of the Day
Post by: pikaia on October 31, 2013, 02:19:21 PM
As it is Halloween, here is a scary radar image of the Icelandic volcano Eyjafjallajökull, erupting in 2010.

(http://www.slate.com/content/dam/slate/blogs/bad_astronomy/2013/10/28/Eyjafjallajokull_radar.jpg.CROP.promovar-mediumlarge.jpg)
Title: Re: Arctic Image of the Day
Post by: Espen on October 31, 2013, 02:59:49 PM
Pikaia,

Nice to see a real image again in this thread, nice catch! ;)
Title: Re: Arctic Image of the Day
Post by: Wipneus on November 06, 2013, 09:06:57 AM
As discussed in the "NØIB (Norske Øer Ice Barrier)" thread, Landsat images are available in 15m resolution (panchromatic, or B&W visible color) and a number of 30m spectral bands.

I have combined the 30m visible color bands (Red,Green and Blue) with the 15m B&W image which produced a color image with 15m resolution. The result is (IMHO) spectacular, but unfortunately difficult to share as the full file size is about 740MB.

Attached is a part of the 79N glacier outlet, where the ice hits a small rock.
 
Title: Re: Arctic Image of the Day
Post by: Espen on November 06, 2013, 09:34:30 AM
Wipneus,

It is "almost" like being there, just fantastic´it is a paradigm shift, Image wise!! ;)
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on November 06, 2013, 09:52:03 AM
Stunning Wipneus! Thanks.

Does Landsat by any chance cover as far north as September's "Polar Polynya"?
Title: Re: Arctic Image of the Day
Post by: ggelsrinc on November 06, 2013, 10:49:06 AM
Bravo again, Wipneus! That area drains so much of Greenland, I hardly believed it, when I first heard about it. Much of GIS heads that way according to what I've researched. It makes me wonder though, if so much ice is transported to the north in Greenland, could it build up in a way to shift the tides and start carrying the ice to the south? It's just a question to think about and not something to personally try to answer. The physics of ice tells me it will flow according to the route offering least resistance. What if that route switches directions at times based on various possible mechanism?

I need to get back and do some homework of that area. It was more important than I thought examining the glacier.
Title: Re: Arctic Image of the Day
Post by: Wipneus on November 06, 2013, 11:53:34 AM

Does Landsat by any chance cover as far north as September's "Polar Polynya"?


I don't know. It is my intention to document the method in the Developers  Corner, but the first step would be to go to LandsatLook Viewer (http://landsatlook.usgs.gov/), learn how to use it and locate the cloudless image(s) that are of your interest.

For software I am using ImageMagick and the Gimp. Processing does require a PC that has at minumum a 64bit OS and 16GB RAM + infinite swap and disk space. I still have had two complete OS crashes during the experiments.
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on November 06, 2013, 12:49:22 PM
The first step would be to go to LandsatLook Viewer ([url]http://landsatlook.usgs.gov/[/url]), learn how to use it and locate the cloudless image(s) that are of your interest.


Thanks Wipneus. I can see the Vilkitsky Strait (https://vimeo.com/76514037), albeit not very clearly this year. I can even see Cape Fligely (http://en.wikipedia.org/wiki/Cape_Fligely). Any further north seems to be just a big blank though :(
Title: Re: Arctic Image of the Day
Post by: Wipneus on November 06, 2013, 02:02:13 PM
A pity Jim, it seems you don't even get to the most northern tip of Greenland this way.
 
It is probably the satellite orbit:

(http://landsat.gsfc.nasa.gov/wp-content/uploads/2013/01/wrs2.jpg)

(google landsat maximum latitude)
Title: Re: Arctic Image of the Day
Post by: Espen on November 06, 2013, 02:50:45 PM
Jim and Wipneus,
Landsat only reaches to the top of Greenland (and just only).
Title: Re: Arctic Image of the Day
Post by: Laurent on December 05, 2013, 08:21:45 PM
Guess what it is !

From a photographer called christian houge :
http://www.artistics.com/christian_houge (http://www.artistics.com/christian_houge)
Title: Re: Arctic Image of the Day
Post by: ritter on December 05, 2013, 10:22:31 PM
Seed vault.
Title: Re: Arctic Image of the Day
Post by: Laurent on December 05, 2013, 11:01:28 PM
yep ! Monsanto, singenta, Bill gates...
Title: Re: Arctic Image of the Day
Post by: Wipneus on December 06, 2013, 03:59:25 PM
I was wondering about the fate of the "goats head".
An animation from Jaxa's AMSR2 RGB images composed from the 36V,36H and 18V bands shows that  it has nor reappeared after the summer. As far as I can see the remnants are now clearly on the way to Fram Strait.

Because of size, it is on YouTube, let me see if that works.

The direct link is http://youtu.be/T6BjTgYjKho (http://youtu.be/T6BjTgYjKho)

Title: Re: Arctic Image of the Day
Post by: jdallen on December 06, 2013, 09:14:57 PM
It's pretty clear to me the shattered remains are currently just WNW of Svalbard, motoring southward towards the gap at about 2 KM/hr.
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on December 12, 2013, 05:47:59 AM
so not long before it's out and spreading in the North Atlantic.
Title: Re: Arctic Image of the Day
Post by: Whit on December 12, 2013, 08:47:08 PM
Not about ice, but still worth mentioning I think.

Nordic Nature Photographer of the Year also happens to be a professor in biology at the University of Tromsø. Dr. Audun Rikardsens research on salmon and arctic char has given us fascinating new insights like salmon diving to depths of 800 m and more off the west coast of Svalbard and arctic char heading into full salty sea-water at 2C. Stuff we didn't think was possible until Rikardsens team radio tagged a bunch of our finned friends ...

But his pictures ... oh man.

Have a look. (http://www.audunrikardsen.com)

One of my favorites, arctic char in midnight sun, Spitsbergen:

(http://www6.clikpic.com/audunrikardsen/images/Svalbardrøye_i_midnattsol_Audun_Rikardsenfor_HS.jpg)
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on December 29, 2013, 04:08:38 AM
and what is arctic, one definition could be this is an area where the average temperature is below zero. A quick modification on the wikipedia map on average temperatures (using 1961-1990 as a baseline) produced here, the averages of below -31C left unmodified since these are only seen in Antarctica. In WMO, I think there was tendency to use later baselines (even 1981-2010 might be used), but this is where subzero areas were approximately 25 years ago.

Too bad f.e. the scale at http://earthobservatory.nasa.gov/GlobalMaps/view.php?d1=MOD11C1_M_LSTDA (http://earthobservatory.nasa.gov/GlobalMaps/view.php?d1=MOD11C1_M_LSTDA) is totally screwed up (f.e. spanning 200px and 70 deg to get a neat 28,57 px/10degrees, and the colors do not match the map), but meteorologists probably know where to get the proper current averages. How are the ameteurs supposed to use these??
[deleted second image since the scale isn't equally spaced in color space]
Title: Re: Arctic Image of the Day
Post by: Wipneus on December 29, 2013, 08:53:41 AM
Too bad f.e. the scale at [url]http://earthobservatory.nasa.gov/GlobalMaps/view.php?d1=MOD11C1_M_LSTDA[/url] ([url]http://earthobservatory.nasa.gov/GlobalMaps/view.php?d1=MOD11C1_M_LSTDA[/url]) is totally screwed up (f.e. spanning 200px and 70 deg to get a neat 28,57 px/10degrees, and the colors do not match the map),


I wonder, the NASA people at Earth Observatory do make efforts to effective use of colors in their images. See for instance the article series "subtleties of color", starting here (http://earthobservatory.nasa.gov/blogs/elegantfigures/2013/08/05/subtleties-of-color-part-1-of-6/)

And the image you linked to, are daytime temperatures, perhaps that is reason for unexpected colors?
Title: Re: Arctic Image of the Day
Post by: Espen on December 29, 2013, 01:15:58 PM
Happy New Year 2014:

Please click on image to enlarge!

Title: Re: Arctic Image of the Day
Post by: Neven on December 29, 2013, 10:58:33 PM
Very nice, Espen!  :)
Title: Re: Arctic Image of the Day
Post by: Espen on December 30, 2013, 06:00:38 PM
Very nice, Espen!  :)

Thank you Neven, and a Happy New Year to you and your family!!!!!! ;)
Title: Re: Arctic Image of the Day
Post by: Neven on December 30, 2013, 08:51:33 PM
Thank you Neven, and a Happy New Year to you and your family!!!!!! ;)

The same to you and yours, Espen.
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on January 03, 2014, 02:44:18 PM
Belated Happy New Year from me too. A small mystery image from 2014:
Title: Re: Arctic Image of the Day
Post by: Neven on January 03, 2014, 06:49:19 PM
A weak attempt: Lena Delta?
Title: Re: Arctic Image of the Day
Post by: Espen on January 03, 2014, 08:22:49 PM
Another one from Sea of Okhotsk:

Please click on image to enlarge!
Title: Re: Arctic Image of the Day
Post by: wili on January 06, 2014, 03:06:28 AM
IIRC, about this time of year last year, we were starting to notice how broken up the sea ice looked. How is it looking to folks now?
Title: Re: Arctic Image of the Day
Post by: Neven on January 06, 2014, 11:22:40 AM
The other day someone posted a radar image and there were a lot of cracks again in the Beaufort Sea, which is no wonder, as a huge high pressure area has been parked there for quite a while now.
Title: Re: Arctic Image of the Day
Post by: Gray-Wolf on January 06, 2014, 01:36:35 PM
Hi Neven! all the best for 2014!

I tend to look at ;

http://www.woksat.info/wos.html (http://www.woksat.info/wos.html)

for my peeps at the Arctic over winter dark. you either get the larger glimpses of Greenland/svalbard etc but a daily pole to Africa snap which allows a look at the basin. Beaufort does look like a gaint has stepped on it though.
Title: Re: Arctic Image of the Day
Post by: wili on January 06, 2014, 02:08:48 PM
Thanks. I'm just trying to put together how much we could expect the New Arctic to affect weather patterns even in the winter. I would expect that a much more 'porous' ice pack could be letting more heat out even in the depths of winter that could affect everything from the Warm Arctic Cold Continents (WACC) pattern to polar cyclones to the apparent merger of the polar and mid-latitude jet streams. I can't remember whether there is some standard way to measure the number of leads and cracks, or if that would be the whole story anyway.
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on January 07, 2014, 04:58:19 AM
The mystery image was from the shore of Hudson Bay, the dark stripes in the frigid landscade are presumably creek valleys with higher vegetation.

The channels 3, 6 and 7 images from the lance-modis have different resolutions, this might be a reason that many of the images get striping when looked at in extreme detail. Here I tried to remove the striping by appyling a slight motion blur in two directions to the full resolution image of Labrador N.Cape, resolution 1km/px. Other adjustments were also made to keep details visible. Below a detail of the full image (res 250m/px) that shows this procedure wasn't perfect. Additionally, as many of the images are composed of several overpasses by the satellite, the direction of the motion blur applied will be variable.

[modified:] Oops, location is http://en.wikipedia.org/wiki/Cape_Chidley (http://en.wikipedia.org/wiki/Cape_Chidley) not the Ungava peninsula which is the northest one here. [added an image of Hudson Bay coast to illustrate the striping between images from two overpasses]
Title: Re: Arctic Image of the Day
Post by: Neven on January 07, 2014, 11:04:14 AM
The mystery image was from the shore of Hudson Bay, the dark stripes in the frigid landscade are presumably creek valleys with higher vegetation.

Thanks, that was my second guess.  ;)
Title: Re: Arctic Image of the Day
Post by: Laurent on January 13, 2014, 03:08:35 PM
“Aurora over Saltfjellet” by Tommy Eliassen
Title: Re: Arctic Image of the Day
Post by: Laurent on January 18, 2014, 11:41:56 AM
Fish traped by the ice in Norway (only -7,8°C)
Title: Re: Arctic Image of the Day
Post by: Neven on January 18, 2014, 11:52:18 AM
Wow, that's a big freezer!
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on January 19, 2014, 08:32:59 AM
shallower lakes have frozen thickly enough for some wintry activities in southern Finland:
Title: Re: Arctic Image of the Day
Post by: Whit on January 23, 2014, 10:14:56 PM
The ocean around Tromsø (69 N) in the north of Norway has been teeming with herring over the last few years. This attracts other species, especially larger predators. After the herring-populations increased the humpback-whales started to make extended feeding-stops in the fjords on their way from the Arctic Ocean to their breeding grounds in the Carribbean.

They tend to leave around the middle of January, and I was lucky to get a last look at them waving goodbye, for now.

The first image was shot with a wide angle lens, just to give you an idea of how close they got. At the same time two packs of killer-whales kept a more respectful distance. We had four of these 15 meter long 30-ton giants playing and showing off around our small RIB, at times so close that we could have touched them. We most certainly could smell them ...
Title: Re: Arctic Image of the Day
Post by: Espen on January 23, 2014, 10:34:06 PM
Whit,

Takk for de flotte bildene ;)

Espen
Title: Re: Arctic Image of the Day
Post by: Whit on January 23, 2014, 10:48:22 PM
I lige måde, Espen :)
Title: Re: Arctic Image of the Day
Post by: Neven on January 23, 2014, 10:49:22 PM
We most certainly could smell them ...

So, how did they smell?

Sorry, just curious.  :)
Title: Re: Arctic Image of the Day
Post by: Whit on January 23, 2014, 10:59:15 PM
So, how did they smell?

Sorry, just curious.  :)
You smell their breath if you're downwind of them when they blow, and it's not really what you would expect from the scenery ... Imagine a really awkward moment in an elevator, amplified by a 30-ton herring-feeding machine ;)
Title: Re: Arctic Image of the Day
Post by: Espen on January 23, 2014, 11:02:35 PM
Or a Mama San in a tea house in old Hong Kong ;)
Title: Re: Arctic Image of the Day
Post by: Neven on January 23, 2014, 11:28:43 PM
Okay, enough. I'll pass, thank you.  ;D
Title: Re: Arctic Image of the Day
Post by: pikaia on January 24, 2014, 10:23:15 AM
Atlantic walrus off the coast of Greenland. From National Geographic photo of the day.

(http://images.nationalgeographic.com/wpf/media-live/photos/000/753/cache/atlantic-walrus-greenland-nicklen_75331_990x742.jpg)
Title: Re: Arctic Image of the Day
Post by: diablobanquisa on February 12, 2014, 03:11:21 PM
Sea ice today at St John's and surrounding areas (Newfoundland):

(http://images.meteociel.fr/im/8464/NL_Harbour_ekp6.jpg)



Locally formed new ice?

(http://images.meteociel.fr/im/2082/20140211180000_WIS27ESD_0007512641_gxg3.gif)
Title: Re: Arctic Image of the Day
Post by: lanevn on February 12, 2014, 07:47:47 PM
Pictures from Franz-Josef Land. Not new, but scary anyway.
http://ru-abandoned.livejournal.com/1433930.html (http://ru-abandoned.livejournal.com/1433930.html)
Title: Re: Arctic Image of the Day
Post by: lanevn on February 17, 2014, 08:47:40 PM
Something in Summit Camp. Sun?
Title: Re: Arctic Image of the Day
Post by: diablobanquisa on February 21, 2014, 01:17:05 AM
Sun is back (Eureka, Ellesmere Island):

(http://diablobanquisa.files.wordpress.com/2014/02/eureka-20_02_2014.gif?w=640)
Title: Re: Arctic Image of the Day
Post by: Neven on February 21, 2014, 01:19:13 AM
Very nice, Diablo!
Title: Re: Arctic Image of the Day
Post by: Wipneus on February 21, 2014, 09:37:00 AM
Exit from the Bering Strait (2014-2-6).

In this Landsat 8 image the center the Big and Little Diomede Islands between the mainlands of Siberia and Alaska can be seen. And between Chukchi in the north and Bering Sea in the south.
The international date line separates these islands, giving them the alternative names Tomorrow and Yesterday Islands.

The ice in the Bering sea does not get much better going to the south.

(Click the attached image for the hi-res picture)
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on February 21, 2014, 04:47:45 PM
Exit from the Bering Strait (2014-2-6).

In this Landsat 8 image the center the Big and Little Diomede Islands between the mainlands of Siberia and Alaska can be seen. And between Chukchi in the north and Bering Sea in the south.
The international date line separates these islands, giving them the alternative names Tomorrow and Yesterday Islands.

The ice in the Bering sea does not get much better going to the south.

(Click the attached image for the hi-res picture)

I would think portions of the Chukchi look similar as there are areas of low concentration showing on CT.
Title: Re: Arctic Image of the Day
Post by: Wipneus on February 24, 2014, 03:15:46 PM
Wrangel Island on this February 21 Landsat 8 image. Sun elevation is 8.8 degrees, so the image is not that brilliant yet.
North-East is cliffy Herald Island under a few clouds.

East of Wrangel is the Chukchi Sea. I wonder about the brownish color of some of the ice, looks kind of dirty

(click the image for the hi res picture, rescaled to 60m to keep the forum software happy)
Title: Re: Arctic Image of the Day
Post by: Espen on February 24, 2014, 06:29:33 PM
Wipneus,

I think the color difference is due to difference in ice thickness?
Title: Re: Arctic Image of the Day
Post by: jdallen on February 24, 2014, 07:27:41 PM
Wipneus,

I think the color difference is due to difference in ice thickness?

That would be my guess.  I think if we track the images back we would find the darker areas were recently opened leads which have since picked up a skin of new ice.  Considering warmth and the return of sunlight, it may not get much past the pancake stage.
Title: Re: Arctic Image of the Day
Post by: Yuha on February 27, 2014, 12:49:11 AM
Spotted this on the Arctic Sea Ice Graphs page.
Obviously a glitch for now, but could it be reality one day?
Title: Re: Arctic Image of the Day
Post by: jdallen on February 27, 2014, 03:36:19 AM
Spotted this on the Arctic Sea Ice Graphs page.
Obviously a glitch for now, but could it be reality one day?
<laughs> Quite the glitch.

The globe isn't due to get that much warmer for several hundred million years, even with human meddling.  Past about 300MY and the re-merging of continents in "Pangea-ultima", we'll for certain be back to a hothouse - albeit the final one - before the predicted extinction of Prokaryotic life in about 600MY or so, due to increased solar output and CO2 removal from the atmosphere by geologic processes.

Our problems of course, are a lot more immediate, and not as severe, thankfully  ;)

Title: Re: Arctic Image of the Day
Post by: Pmt111500 on February 27, 2014, 07:24:40 AM
 Hah, instant mega-PETM ::) , the values for tropics are too high for much complex life to exist. Maybe some annual plants can live there, spending these too hot days as seeds. If that comes to pass, all of the tropics is turned to carbon sinks and the only way to travel between hemispheres would be aerial or heavily airconditioned. One could assume this wouldn't effect the currents of air and water, but one would be wrong. Can't say if that's possible.
Title: Re: Arctic Image of the Day
Post by: jdallen on February 27, 2014, 09:03:38 AM
Hah, instant mega-PETM ::) , the values for tropics are too high for much complex life to exist. Maybe some annual plants can live there, spending these too hot days as seeds. If that comes to pass, all of the tropics is turned to carbon sinks and the only way to travel between hemispheres would be aerial or heavily airconditioned. One could assume this wouldn't effect the currents of air and water, but one would be wrong. Can't say if that's possible.

Given time, plants might adapt. Extremeophiles definitely would, because there would be areas that would get WET.  Insects, possibly.  Vertebrates? Unlikely unless they were nocturnal.  Some critters would survive at higher altitudes.  Overall though, bad news.
Title: Re: Arctic Image of the Day
Post by: Wipneus on February 27, 2014, 09:24:43 AM
Barrow, north Alaska, February 26. In this Landsat 8 image, the little town is clearly visible with its east-west air strip, under a low sun (elevation 10.6 degrees).

The Chukchi Sea is full of slabs of broken ice. Probably quite thin due to the relatively high temperatures this winter.

(do click the image for a hi-res experience)
Title: Re: Arctic Image of the Day
Post by: Polynya88 on February 27, 2014, 05:00:16 PM
The temperatures in the Beaufort Sea have not been overly warm this year. Attached is a chunk of hi-res. radar from N of Point Barrow showing some of the extensive area of Second-year ice that was created along the Alaskan coast this fall - large areas of First-year ice did not melt out due to the cold summer. These now second-year floes (technically Old Ice) are small in diam, but at least 25% thicker than the FY ice.
The attached ice chart shows VAST area of predominantly second-year ice (orange in the map) that was present at the end of melt season - a low melt season, with resulting low water temps and rapid ice growth.
Title: Re: Arctic Image of the Day
Post by: jdallen on February 27, 2014, 11:36:31 PM
The temperatures in the Beaufort Sea have not been overly warm this year.


I respectfully beg to differ with you here... They've been 5-6C above normal, for the last 3 months...

http://www.esrl.noaa.gov/psd/map/images/rnl/sfctmpmer_90b.rnl.html (http://www.esrl.noaa.gov/psd/map/images/rnl/sfctmpmer_90b.rnl.html)

... and the lions share of that is inflow heat from the North Pacific rather than radiative loss from the ocean.  Given the end of melt season conditions last fall, with "average" refreeze season conditions, the ice would be in far better shape than it is currently.

Yes, there is a lot more 2nd year ice than this time in 2013.  It is not a solid pack, and is whip-stitched together with poorer-than-average (by 50-60CM thinner, I'd wager) FYI which will not stand up well to the return of insolation next month.

We shall see in another 6 weeks.
Title: Re: Arctic Image of the Day
Post by: Apocalypse4Real on February 28, 2014, 03:07:14 AM
The ice across much of the Alaskan and Siberian coastal areas looks like it has already hit an ice machine. This is not the past pack ice.
Title: Re: Arctic Image of the Day
Post by: Neven on February 28, 2014, 05:42:58 AM
Barrow, north Alaska, February 26. In this Landsat 8 image, the little town is clearly visible with its east-west air strip, under a low sun (elevation 10.6 degrees).

The Chukchi Sea is full of slabs of broken ice. Probably quite thin due to the relatively high temperatures this winter.

(do click the image for a hi-res experience)

Wow, that's pretty amazing. Too bad they're no longer doing the Barrow break-up...
Title: Re: Arctic Image of the Day
Post by: Vergent on February 28, 2014, 07:14:30 AM
looks like they need a Zamboni.
Title: Re: Arctic Image of the Day
Post by: Wipneus on March 04, 2014, 06:37:58 PM
North Baffin Bay, near Ellesmere island, first Landsat 8 Image here of the summer season (sun elevation 6.8 degrees). Almost teardrop shaped stripes of ice sludge in the open water between the sea ice floats.

Upper left in the land-fast ice some bigger icebergs (the largest has a side of about 1.5 km) are stuck, probably remnants of the PII-2012 iceberg. Smaller icebergs (less than 100m) can be seen all over the place.

(do click the picture for the hi-res image)

   
Title: Re: Arctic Image of the Day
Post by: Espen on March 04, 2014, 06:42:36 PM
Wipneus,
It more art than ice :)
Title: Re: Arctic Image of the Day
Post by: Espen on March 04, 2014, 09:51:05 PM
Wipneus,

In what (high) resolution can you supply the image?
Title: Re: Arctic Image of the Day
Post by: Wipneus on March 05, 2014, 06:11:35 AM
It is 15m as indicated in the caption (processed as described in the developer corner thread).
Full image (@18062x18122pixels) is 655 MBytes. Here is a reduced resolution version:
Title: Re: Arctic Image of the Day
Post by: wili on March 05, 2014, 09:12:28 AM
http://earth.nullschool.net/#current/wind/surface/level/orthographic=-33.96,42.35,290 (http://earth.nullschool.net/#current/wind/surface/level/orthographic=-33.96,42.35,290)

Notice that winds are coming north from the tropics all the way up into the Arctic right now. What effect is this likely to have on sea ice in that region? Wasn't this a pattern that someone predicted a few days back as hitting about now? Was that Wipneus or Werther? Or someone else?
Title: Re: Arctic Image of the Day
Post by: werther on March 05, 2014, 11:34:32 AM
Morning Wili,

It is what you could see coming even on the 26 Feb prognosis by ECMWF, this however, recalculated on 2 Mar:

(http://i1036.photobucket.com/albums/a446/hanver1/ECMWF0203201496hours0603small_zps8aa2b391.jpg)

As you saw on Nullschool, it is actually panning out now. Maybe a tad repositioned, but nevertheless.
Interesting to see SIE and MODIS in the next couple of days.

Later on next week AO is turning positive, low level Low near the Pole, N winds around Svalbard again. Getting colder over the Pole also, pulling it all back out of Eurasia. So expect SIE to hover against a max in the next 10 days.
Title: Re: Arctic Image of the Day
Post by: Wipneus on March 07, 2014, 02:54:49 PM
Idunno asked about this on the ASI blog.
First Landsat 8 image from row 4, latitude high enough for the Zachariae ice stream. But this is Laptev, open water that has refrozen. See also this post (https://forum.arctic-sea-ice.net/index.php/topic,382.msg21111.html#msg21111)

The island on the left is Bolshevic Island, most southern of the Severnaya Zemlya islands. The strait between Bolshevic and the main land is part of the North East Passage.

(click attached image for best resolution)
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on March 07, 2014, 04:22:38 PM
This morning's view from the Svalbard surfcam: (http://www.svein-nordahl.com/svalbard/webcam/webcam_LYB.php)



Title: Re: Arctic Image of the Day
Post by: Neven on March 07, 2014, 10:02:40 PM
Is that a polar bear in the lower right corner?
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on March 07, 2014, 10:14:24 PM
Is that a polar bear in the lower right corner?

After close inspection of the original I don't think so Neven. I suspect the polar bears had all disappeared over the horizon on their jetskis, looking for some seals.
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on March 08, 2014, 10:25:53 PM
Is that a polar bear in the lower right corner?

After close inspection of the original I don't think so Neven. I suspect the polar bears had all disappeared over the horizon on their jetskis, looking for some seals.

Funny  ;D and sad.  :'(
Title: Re: Arctic Image of the Day
Post by: Wipneus on March 17, 2014, 12:00:45 PM
Landsat 8 image of south-west part of Svalbard. "1" marks the landing strip of Svalbard Airport of Longyearbyen, administrative center of the islands. "2" marks Barentsburg, mostly inhabited by Russians and Ukrainians.

(click that picture for best resolution)
Title: Re: Arctic Image of the Day
Post by: werther on March 17, 2014, 01:22:30 PM
Well, Wipneus, you don't mean to suggest any relations between people of Russian or Ukranian descent and 'bugged' places?
Title: Re: Arctic Image of the Day
Post by: Wipneus on March 17, 2014, 02:39:54 PM
Barentsbug -> Barentsburg

What a mistake to make, certainly not intentional.
Title: Re: Arctic Image of the Day
Post by: ChasingIce on March 18, 2014, 12:17:11 AM
Spotted this on the Arctic Sea Ice Graphs page.
Obviously a glitch for now, but could it be reality one day?

No. 

If it ever was, there wouldn't be anyone to post about it.
Title: Re: Arctic Image of the Day
Post by: adancau on March 18, 2014, 09:09:32 PM
Barentsburg from across the fjord, Mar 05. No ice at all, had to go all around the fjord. Not normal, according to the guide.
Title: Re: Arctic Image of the Day
Post by: Wipneus on March 24, 2014, 03:51:15 PM
Fram transport (image source Nasa Worldview-Aqua Modis).

Far on the left the ice is still fasted to Greenland, the ice on the highway moves south at about 23 km/day. I cannot be sure but the ice strings on the right seem to move north.

Title: Re: Arctic Image of the Day
Post by: jdallen on March 24, 2014, 06:27:07 PM
Fram transport (image source Nasa Worldview-Aqua Modis).

Far on the left the ice is still fasted to Greenland, the ice on the highway moves south at about 23 km/day. I cannot be sure but the ice strings on the right seem to move north.

23KM/day sounds about right. Multiply by width of flow, and we have (holds up thumb and squints) somewhere between 5000-10000 Km2/day of older ice exiting the central arctic.  Doesn't sound like much, but when you consider the end of season area and age, it looks more significant.
Title: Re: Arctic Image of the Day
Post by: TerryM on March 24, 2014, 08:08:09 PM
Wipneus


In the past I've attributed the patterns shown particularly on the image from the 23d as evidence of the katabatic winds called piteraq in Greenland. They tend to follow deep canyons and can dislodge fast ice from the coast.


Terry
Title: Re: Arctic Image of the Day
Post by: Neven on March 30, 2014, 10:03:54 AM
Commenter icefest made (http://forum.arctic-sea-ice.net/index.php/topic,778.msg23184.html#msg23184) this image showing NH snow cover:

(http://puu.sh/7P9YS.jpg)
Title: Re: Arctic Image of the Day
Post by: Wipneus on April 01, 2014, 10:20:53 AM
Landsat 8 image of the sea north of Svalbard. The gap of open water has not been so narrow for a while, but the ice pack looks really dispersed. Some ice streamers in between, suggest a current east-west while the clouds are coming from the north.

(click that picture for the full size image)
Title: Re: Arctic Image of the Day
Post by: jdallen on April 03, 2014, 09:30:02 AM
That's not ice... That's slush...

http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r06c03.2014092.terra.1km (http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r06c03.2014092.terra.1km)

Contrast - same location in 2010 (intervening data lost due to gross incompetence...)

http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r06c03.2010092.terra.1km (http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r06c03.2010092.terra.1km)
Title: Re: Arctic Image of the Day
Post by: Wipneus on April 17, 2014, 09:19:19 AM
Off topic, as this image is Antarctica, but this is to pretty/important to ignore. First images of Sentinel-1A is released, among this one:

Acquired on 13 April 2014 at 23:57 GMT (14 April at 01:57 CEST) by Sentinel-1A, this image shows a transect over the northern part of the Antarctica Peninsula. It was acquired in the satellite’s ‘strip map’ mode with a swath width of 80 km and in dual polarisation. The colours indicate how the land, ice and water reflect the radar signal differently.


(http://www.esa.int/var/esa/storage/images/esa_multimedia/images/2014/04/antarctica_peninsula_from_sentinel-1a/14476587-2-eng-GB/Antarctica_Peninsula_from_Sentinel-1A.jpg)

http://www.esa.int/spaceinimages/Images/2014/04/Antarctica_Peninsula_from_Sentinel-1A (http://www.esa.int/spaceinimages/Images/2014/04/Antarctica_Peninsula_from_Sentinel-1A)
Title: Re: Arctic Image of the Day
Post by: icefest on April 17, 2014, 10:40:28 AM
 Wipneus, can you help interpret the image?

I can see glaciers in the bottom of the image, flowing into what must be sea ice in the bottom right.
Does that mean that the matte dark area immediately above is an ice cap?
Title: Re: Arctic Image of the Day
Post by: Wipneus on April 17, 2014, 11:36:24 AM
I have not found it yet icefest! Somewhere else I did read that in Sentinel radar images, water is dark, but here the glaciers seem to show otherwise.
Title: Re: Arctic Image of the Day
Post by: pikaia on April 17, 2014, 11:59:45 AM
If I understand it correctly, the brightness of the image indicates how much of the radar is reflected back to the satellite, ie how smooth it is. Where the surface is smooth most of the signal will be reflected to the side, giving a dark image; where it is rough some of the signal will be scattered back to the satellite. Where the image is dark it could be due to calm water or it could be due to smooth ice.
Title: Re: Arctic Image of the Day
Post by: icefest on April 17, 2014, 12:21:10 PM
Here is my interpretation.

This is mostly based upon the direction of flow of the glaciers (purple with arrows pointing to calving front).

(http://puu.sh/8c8Ab.png)
Title: Re: Arctic Image of the Day
Post by: icefest on April 17, 2014, 12:28:38 PM
Sorry for double-posting.

I found the section of antarctic peninsula where the image (?) was taken.

(http://puu.sh/8c8RL.jpg)
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on April 17, 2014, 12:37:34 PM
to get a more comfortable look on this, rotate 90 clockwise and squeeze height of the image...

I did some more adjusting (not optimized) (cut some blue, inverted part of the brightness range, adjusting contrast etc.)

Estimating from the map the resolution would seem to be ~150m/px, but of course there maybe even more detailed channels than this one, at least the height looks like being more accurate.

umm, looking at Lance/Modis images of the area, the area on right in the image might indeed be open sea, my adjustmets are probably off somewhat... happens though every now and then when not knowing what's been measured.

squeezing the image further gives more realistic height differences, but I've already lost too much detail for this to be good. great if this can see through clouds which are a major PITA in images from orbit.
Title: Re: Arctic Image of the Day
Post by: Espen on April 18, 2014, 05:20:24 PM
Remarkable sea ice free conditions along the Okhostk Coast / Sea:
Title: Re: Arctic Image of the Day
Post by: pikaia on April 20, 2014, 09:59:56 AM
(http://apod.nasa.gov/apod/image/1404/volcano_stefnisson_960.jpg)

Another image of the Eyjafjallajökull volcano, from NASA's Astronomical Picture of the Day. 

http://apod.nasa.gov/apod/astropix.html (http://apod.nasa.gov/apod/astropix.html)




Title: Re: Arctic Image of the Day
Post by: Shared Humanity on April 20, 2014, 01:58:59 PM
Beautiful photo. I love having images of the awesome power of nature put me in my place.
Title: Re: Arctic Image of the Day
Post by: pikaia on April 28, 2014, 08:54:33 AM
Swirling ice off the East coast of Greenland, October 2012.

(http://eoimages.gsfc.nasa.gov/images/imagerecords/79000/79521/greenland_amo_2012291.jpg)

From NASA Earth Observatory:
http://earthobservatory.nasa.gov/IOTD/view.php?id=79521&eocn=image&eoci=related_image (http://earthobservatory.nasa.gov/IOTD/view.php?id=79521&eocn=image&eoci=related_image)
Title: Re: Arctic Image of the Day
Post by: pikaia on April 29, 2014, 10:06:43 AM
Jumping auroral dog over Alaska.

(http://apod.nasa.gov/apod/image/1404/auroradog_chumack_1800.jpg)

From NASA's Astronomical Picture of the Day.

http://apod.nasa.gov/apod/ap140429.html (http://apod.nasa.gov/apod/ap140429.html)
Title: Re: Arctic Image of the Day
Post by: Espen on May 05, 2014, 09:12:47 PM
The Sauna and Ice Pool service at Kap Jackson (Washington Land, North West Greenland) is now open for business:
Title: Re: Arctic Image of the Day
Post by: werther on May 05, 2014, 10:52:58 PM
Nice detail, Espen, that bathtub always appears first in Nares' spring, doesn't it?

I liked todays trembling atmosphere in the wake of the De Long Islands, N of the Novosibirskye Ostrova:

(http://i1036.photobucket.com/albums/a446/hanver1/Arctic%20Ice%202014/LMr05c04day12505052014Tremblingatmospheresmall_zps3857dd11.jpg)

Bennett Island always ripples best being 426 m high, but today Henrietta and Jeannette Islands joined through their 315 and 351 m rocky outcrops.

I wonder if the wide stress lead along the East Siberian Continental Plain plays a role. The southern winds crossing them pick up moisture over there (see the upper right corner). It condenses when the top of the boundary layer is lifted over these cliffs.

In that case, it is a sign of spring and anomalous moisture spreading over the sea ice...
Title: Re: Arctic Image of the Day
Post by: Espen on May 09, 2014, 09:26:29 PM
Jan Mayen:

Beerenberg the world's northernmost subaerial active volcano is here seen thru the clouds.

Please click on image to enlarge!
Title: Re: Arctic Image of the Day
Post by: pikaia on May 11, 2014, 10:06:59 AM
A Harp seal in the Gulf of St. Lawrence. Not actually taken in the Arctic, but it could have been, so wth.

(http://images.nationalgeographic.com/wpf/media-live/photos/000/791/overrides/harp-seal-ice-madeleine-islands_79187_990x742.jpg)


http://photography.nationalgeographic.com/photography/photo-of-the-day/harp-seal-ice-madeleine-islands/ (http://photography.nationalgeographic.com/photography/photo-of-the-day/harp-seal-ice-madeleine-islands/)
Title: Re: Arctic Image of the Day
Post by: Wipneus on May 14, 2014, 11:50:48 AM
Detail of the McKenzie River delta as seen by Landsat 8 on May 10.

(click on the picture and be prepared for a 3M download)
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on May 14, 2014, 03:15:49 PM
Wipneus.....interesting snow cover pattern (I'm assuming that's what I am seeing.).

Is this pattern caused by patches of open water in the delta, still covered with ice and snow, which are surrounded by less wet and perhaps vegetated areas?
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on May 16, 2014, 08:39:34 AM
Wipneus.....interesting snow cover pattern (I'm assuming that's what I am seeing.).

Is this pattern caused by patches of open water in the delta, still covered with ice and snow, which are surrounded by less wet and perhaps vegetated areas?

Possbly that's frozen marshland, the more solid patches of ground have lost their snow...
Image is pretty though.
Title: Re: Arctic Image of the Day
Post by: Espen on May 17, 2014, 08:38:45 PM
A rare sighting, Bouvet Island the most remote island and controlled by Norway.
By the way it is the national day of Norway (May 17th):

http://en.wikipedia.org/wiki/Bouvet_Island (http://en.wikipedia.org/wiki/Bouvet_Island)

93 % of the island is covered by a glacier, I wonder if Mauri covered this one?
Title: Re: Arctic Image of the Day
Post by: pikaia on May 18, 2014, 10:17:24 AM
A well fed Polar Bear, from National Geographic  Photo of the Day.

(http://images.nationalgeographic.com/wpf/media-live/photos/000/797/cache/polar-bear-animal-rest_79795_990x742.jpg)
Title: Re: Arctic Image of the Day
Post by: icefest on May 18, 2014, 11:49:01 AM
A well fed Polar Bear, from National Geographic  Photo of the Day.

Where did they find that? Did they have to drag one up from the archives?
Title: Re: Arctic Image of the Day
Post by: Espen on May 18, 2014, 11:55:08 AM
Just a warning.
Title: Re: Arctic Image of the Day
Post by: Wipneus on May 24, 2014, 01:29:29 PM
Lena river delta melting looks like a piece of art.

(click for a 5MB download)
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on May 24, 2014, 01:34:49 PM
Lena river delta melting looks like a piece of art.

(click for a 5MB download)

It looks like false color lava flows to me, certainly beautiful.
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on May 24, 2014, 04:22:12 PM
Awesome sculpture by Cordal in Berlin called "Politicians discussing global warming."
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on May 26, 2014, 05:05:56 PM
The Ellesmere Shore lead crosses Nares Strait entrance, develops further cracks northwards
Title: Re: Arctic Image of the Day
Post by: RunningChristo on May 26, 2014, 11:24:38 PM
First thing I noticed as well when the Lance Modis opened the "curtains" of today! Very massive scale, I Guess we can't blame a herd of Narewhales for this incident ;D. Will be extremely exicting to see if this cracking will continue and even more to observe if these openings will continue to grow and allow the sunrays to heat up the darker water in between the ice :).
Title: Re: Arctic Image of the Day
Post by: 1rover1 on May 29, 2014, 06:45:23 AM
Ice in the port of Churchill is looking pretty rotten now.  Shows up in the live camera feed.

http://www.omnitrax.com/media-center/portofchurchillcamerafeeds (http://www.omnitrax.com/media-center/portofchurchillcamerafeeds)

Title: Re: Arctic Image of the Day
Post by: Espen on June 09, 2014, 09:57:29 AM
The last remaining sea ice in the sea of Okhotsk for this season:
Title: Re: Arctic Image of the Day
Post by: Juan C. García on June 11, 2014, 07:12:24 AM
What do you see here?
Well, what I see is a lake (the Laptev bite), with kind of the shape and possibly the size of the United Kingdom Island, in a place that we would not dreamed ten years ago. But the Arctic sea ice is OK. At 2014 we are far from reaching the 2012 record, so we have to wait until all the Arctic sea ice is gone, in order to believe that AGW is happening. Anyway, thanks to Global Warming, we have new maritime routes at the Arctic.
Yes, I am being sarcastic. Isn't this reality bad enough? We should wait until the permafrost will melt, releasing methane and CO2? In my opinion, this waiting time until we reach another record is a waste of time. There should be a special place on this forum with the name "We ought to..."
Title: Re: Arctic Image of the Day
Post by: trebuh on June 11, 2014, 05:04:41 PM
http://igloo.atmos.uiuc.edu/cgi-bin/test/print.sh?fm=06&fd=09&fy=1990&sm=06&sd=09&sy=2014 (http://igloo.atmos.uiuc.edu/cgi-bin/test/print.sh?fm=06&fd=09&fy=1990&sm=06&sd=09&sy=2014)
Title: Re: Arctic Image of the Day
Post by: Juan C. García on June 12, 2014, 05:41:30 AM
Thanks for the link, trebuh.
In a way, you show me I am right in my comment.
It is true that we had an important Laptev bite at 1990, but the sea ice at 1990 was strong, so it didn´t develop the way it is going to develop at 2014. On the other hand, if we check the other years, there was not an important Laptev bite until 2007 and 2012 (2009 has no data).
In a way, I am dissapointed that I asked for an action in this forum and some forum users answered that we should not have "we ought to..." proposals on this forum.
Surely I was not active enough. I should push harder.
Anyway, the true is that at 2013, the IPCC was critized for exagerating AWG, when my point of view is that it is the other way around.

What do you think? Do you agree that the IPCC models, as they are right now, are worthless? Would you like to make the effort to include a PIOMAS volume forecast on the USA Third Climate Assessment Report?
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on June 18, 2014, 05:20:25 AM
contrast-enhanced MODIS-image of an arctic specialty, poorly defined mesoscale cyclone (weak 'polar low') inside an otherwise uniform cloud cover (or that's my interpretation). They do not usually produce significant worsening of weather conditions, if they're the same that pass Finland occasionally, rather you note thicker clouds and a slight increase in precipitation and winds, lasting at max some 15-30minutes, or these happening a couple of times during the snow event. ('tuisku' or 'tomakka' we might call the stronger ones in finland, the 4th worst type of snowstorms that some people still enjoy)

resolution 250m/px so the system size is just 75km :-)
Title: Re: Arctic Image of the Day
Post by: Phil. on June 19, 2014, 12:51:33 PM
(http://feeder.gina.alaska.edu/radar-uaf-barrow-seaice-images/current/image)

Nice shot of the inshore ice at Barrow breaking up and drifting off-shore
Title: Re: Arctic Image of the Day
Post by: Espen on June 20, 2014, 09:40:40 PM
One of the great scenes of Greenland: The 5 Star:
Title: Re: Arctic Image of the Day
Post by: jdallen on June 20, 2014, 10:23:48 PM
([url]http://feeder.gina.alaska.edu/radar-uaf-barrow-seaice-images/current/image[/url])

Nice shot of the inshore ice at Barrow breaking up and drifting off-shore


Ice which is now GONE. (As of 2014.06.20)
Title: Re: Arctic Image of the Day
Post by: pikaia on June 21, 2014, 12:31:11 AM
(http://files.adme.ru/files/news/part_68/682755/26.png)

Photo by Andrei Ermolayev. More here:

http://www.adme.ru/illustration-and-photography/hochu-v-islandiyu-682755/682755-5352655/ (http://www.adme.ru/illustration-and-photography/hochu-v-islandiyu-682755/682755-5352655/)
Title: Re: Arctic Image of the Day
Post by: epiphyte on June 21, 2014, 06:47:20 AM
Forget image of the day. That one gets my vote for image of the year. Maybe the decade. Awesome.
Title: Re: Arctic Image of the Day
Post by: Phil. on June 22, 2014, 06:28:07 PM
Here's some new melt ponds:
http://feeder.gina.alaska.edu/webcam-uaf-barrow-seaice-images/2014_06_22_04_17 (http://feeder.gina.alaska.edu/webcam-uaf-barrow-seaice-images/2014_06_22_04_17)
Title: Re: Arctic Image of the Day
Post by: nukefix on June 23, 2014, 06:00:35 PM
ESA Sentinel-1 images Disco Bay on 7.6.2014 (misses Jakobshaven though for now):

Title: Re: Arctic Image of the Day
Post by: Yuha on June 24, 2014, 07:25:06 AM
Wildfires near Great Bear Lake:
Title: Re: Arctic Image of the Day
Post by: Yuha on June 24, 2014, 07:47:10 AM
The same as above but using the 7-2-1 bands on Aqua/MODIS:
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on June 24, 2014, 02:36:33 PM
Great Bear Lake is the largest lake entirely in Canada, the fourth largest in North America, and the eighth largest in the world.
Title: Re: Arctic Image of the Day
Post by: Buddy on June 24, 2014, 02:54:40 PM
Just what the AIS and Greenland need this year........lower albedo from wildfires..... :P
Title: Re: Arctic Image of the Day
Post by: nukefix on June 25, 2014, 12:08:57 PM
Just what the AIS and Greenland need this year........lower albedo from wildfires..... :P
Wildfires must be a rather regular thing in the Arctic during summer.
Title: Re: Arctic Image of the Day
Post by: jdallen on June 25, 2014, 06:21:17 PM
Just what the AIS and Greenland need this year........lower albedo from wildfires..... :P
Wildfires must be a rather regular thing in the Arctic during summer.
Localized, yes. generalized, and at this scale, no. This is a new phenomena, directly tied to increased high latitude heat and drying.
Title: Re: Arctic Image of the Day
Post by: Phil. on June 26, 2014, 05:48:39 PM
Further breakup underway at Barrow
3582_radar-uaf-barrow-seaice-images_2014-6-25_1-day-animation.mp4
Title: Re: Arctic Image of the Day
Post by: Espen on June 29, 2014, 10:38:49 AM
Break up at Kimmirut:


http://www.kimmirutweather.com/ (http://www.kimmirutweather.com/)
Title: Re: Arctic Image of the Day
Post by: be cause on June 29, 2014, 06:15:04 PM
http://www.kimmirutweather.com/webcam.jpg (http://www.kimmirutweather.com/webcam.jpg)

what a difference in only a few hours ! And temps of 10.2'C ..
Title: Re: Arctic Image of the Day
Post by: jdallen on June 29, 2014, 09:31:45 PM
what a difference in only a few hours ! And temps of 10.2'C ..

Wave "bye bye" to the Hudson and Baffin ice as it vanishes...
Title: NARES BREAKUP
Post by: jdallen on July 02, 2014, 08:45:18 AM
This sequence in Nares is pretty extraordinary...

(http://map2.vis.earthdata.nasa.gov/imagegen/index.php?TIME=2014179&extent=-720480,-1167808,-365152,-912832&epsg=3413&layers=MODIS_Terra_CorrectedReflectance_TrueColor,arctic_coastlines_3413&format=image/jpeg&width=694&height=498)

(http://map2.vis.earthdata.nasa.gov/imagegen/index.php?TIME=2014180&extent=-720480,-1167808,-365152,-912832&epsg=3413&layers=MODIS_Terra_CorrectedReflectance_TrueColor,arctic_coastlines_3413&format=image/jpeg&width=694&height=498)

(http://map2.vis.earthdata.nasa.gov/imagegen/index.php?TIME=2014181&extent=-720480,-1167808,-365152,-912832&epsg=3413&layers=MODIS_Terra_CorrectedReflectance_TrueColor,arctic_coastlines_3413&format=image/jpeg&width=694&height=498)

(http://map2.vis.earthdata.nasa.gov/imagegen/index.php?TIME=2014182&extent=-688160,-1155392,-332832,-900416&epsg=3413&layers=MODIS_Terra_CorrectedReflectance_TrueColor,arctic_coastlines_3413&format=image/jpeg&width=694&height=498)
Title: Re: Arctic Image of the Day
Post by: epiphyte on July 02, 2014, 10:17:50 AM
Looking at that this morning, the thing that struck me was how quickly the shards of ice shrink as they are ejected to the south west - ice islands the size of Manhattan just vanish in a couple of days.

On a peripherally related note... I think maybe there's a flip side to the lack of Fram transport over the past few weeks. If the sun is shining on all that open NA/GS water, and there's no ice melt to cool it, is it just storing up heat which will either end up either migrating west under the ice - melting as it goes on the one hand, or causing rapid melt of future
eastward-migrating ice on the other?

Trying to think of a way that sunshine on open water doesn't store up trouble for later - but rolling a doughnut here...
Title: Re: Arctic Image of the Day
Post by: seattlerocks on July 02, 2014, 12:26:12 PM

Anybody fancy a golf day in the Arctic?

Title: Re: Arctic Image of the Day
Post by: Siffy on July 02, 2014, 12:35:58 PM
Not sure I'd want to risk losing the golf ball in all those water traps.

Break up at Kimmirut:


[url]http://www.kimmirutweather.com/[/url] ([url]http://www.kimmirutweather.com/[/url])


(http://www.kimmirutweather.com/webcam.jpg)

The difference a few days make..
Title: Re: Arctic Image of the Day
Post by: werther on July 02, 2014, 01:38:11 PM

Anybody fancy a golf day in the Arctic?


Hey Seattlerocks,
That's my mini-cyclone on this thread:

A detail that is of interest within the fog-low cloud discussion.

This 10 km diameter swirl is visible on MODIS today:

([url]http://i1036.photobucket.com/albums/a446/hanver1/Arctic%20Ice%202014/MicrocycloneCAB0207small_zps67bc55e8.jpg[/url])



Yours is from a later MODIS-run; diff probably 3-6 hours. The swirl made 60 km to the South and has lost it's vorticity. The 'contrail' is delusive; it doesn't emerge from the 'golfball'. Though it looks to be flowing North, the band seems related to the clearing of the fog/low clouds to the SW.
It looks like a diurnal process in action.
The exposed ice looks worse than before. Many pothole-polynia's are appearing, remaining snowcover is rapidly melting away and exposing the individual floes. On top of that, the floes turn a 'deeper shade of grey-blue'.
Soon, the Laptev Bite may expand deeper into this region.
Title: Re: Arctic Image of the Day
Post by: greatdying2 on July 02, 2014, 03:01:41 PM
A little OT:

Liftoff! OCO-2 Heads to Orbit

July 2, 2014 --  A United Launch Alliance Delta II rocket launches with the Orbiting Carbon Observatory-2 (OCO-2) satellite onboard from Space Launch Complex 2 at Vandenberg Air Force Base, California. OCO-2 will measure the global distribution of carbon dioxide, the leading human-produced greenhouse gas driving changes in Earth’s climate.

Image Credit: NASA/Bill Ingalls

(http://www.nasa.gov/sites/default/files/styles/946xvariable_height/public/thumbnails/image/201407020003hq.jpg?itok=Tx7iw-PK)
Title: Re: NARES BREAKUP
Post by: Bruce on July 02, 2014, 04:33:33 PM
This sequence in Nares is pretty extraordinary...
Yes, it's fascinating to watch. Here's yesterday's shot upstream a bit from your shots. You can see that another chunk has broken off. And further up, at the top of the strait, there's open water and very thin ice, suggesting that the whole thing will likely go pretty soon.
Title: Re: Arctic Image of the Day
Post by: seattlerocks on July 02, 2014, 10:04:30 PM

Hey Seattlerocks,
...

This 10 km diameter swirl is visible on MODIS

Yours is from a later MODIS-run; diff probably 3-6 hours. The swirl made 60 km to the South and has lost it's vorticity. The 'contrail' is delusive; it doesn't emerge from the 'golfball'. Though it looks to be flowing North, the band seems related to the clearing of the fog/low clouds to the SW.
It looks like a diurnal process in action.
The exposed ice looks worse than before. Many pothole-polynia's are appearing, remaining snowcover is rapidly melting away and exposing the individual floes. On top of that, the floes turn a 'deeper shade of grey-blue'.
Soon, the Laptev Bite may expand deeper into this region.

Is this rare or a normal phenomenon in the Arctic? I wonder what drives power to the vortex

Edit. I just read your post in the other thread so nevermind. It is really amazing
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on July 03, 2014, 06:37:20 PM
Is this rare or a normal phenomenon in the Arctic?

I would have interpreted it as a polar low birth if I'd seen it just on one image but now I'm not anymore sure. I do not recall seeing anything this small persisting for so long (occasional checks of MODIS images since 2008.) Could be a new sort of phenomenon. Association of mid-size cumulus-clouds that could grow in to a supercell or two in lower latitudes but here up north there's no chance for that to happen? Weird.
Title: Re: Arctic Image of the Day
Post by: Phil. on July 08, 2014, 01:50:38 PM
Increased breakup of shore ice in today's radar animation north of Barrow.

http://seaice.alaska.edu/gi/observatories/barrow_radar (http://seaice.alaska.edu/gi/observatories/barrow_radar)
Title: Re: Arctic Image of the Day
Post by: SteveMDFP on July 08, 2014, 07:01:21 PM
From MODIS, wildfires in the Northwest Territories, Canada.
Great Bear Lake is visible on the right, McKenzie River above it.
The fires are obvious, and the plume of smoke is impressive.
North is to the lower right.
Title: Re: Arctic Image of the Day
Post by: Phil. on July 09, 2014, 12:52:26 PM
The last of the shore ice has broken up at Barrow.

http://feeder.gina.alaska.edu/feeds/radar-uaf-barrow-seaice-images/movies/3657_radar-uaf-barrow-seaice-images_2014-7-8_1-day-animation (http://feeder.gina.alaska.edu/feeds/radar-uaf-barrow-seaice-images/movies/3657_radar-uaf-barrow-seaice-images_2014-7-8_1-day-animation)
Title: Re: Arctic Image of the Day
Post by: helorime on July 09, 2014, 04:24:09 PM
The current seems to be moving at a pretty good clip along the shore.
Title: Re: Arctic Image of the Day
Post by: lanevn on July 13, 2014, 02:11:08 PM
(http://novasmile.ru/wp-content/uploads/2014/07/Pup-Zemli-na-YAmale-1.png)
Giant hole in the Yamal's permafrost.

www.youtube.com/watch?v=cHD6RmRRMeE (http://www.youtube.com/watch?v=cHD6RmRRMeE#ws)

Though can be fake.
They say it is somewhere here https://www.google.ru/maps/place/70%C2%B028%2742.8%22N+67%C2%B047%2752.8%22E/@70.4785556,67.798,17z/data= (https://www.google.ru/maps/place/70%C2%B028%2742.8%22N+67%C2%B047%2752.8%22E/@70.4785556,67.798,17z/data=)!3m1!4b1!4m2!3m1!1s0x0:0x0 Can anyone find this location in modis photos? I don't know how to find coordinates there
Title: Re: Arctic Image of the Day
Post by: Espen on July 13, 2014, 02:35:56 PM
After watching the YouTube video, I believe it is real.
Title: Re: Arctic Image of the Day
Post by: DoomInTheUK on July 13, 2014, 02:43:53 PM
If it's been faked, then give them an oscar for special effects, and for then not overplaying it.

My money would be on it being caused by a small meteorite. A sinkhole wouldn't have any rubble around the edge.

Whatever the cause, it's eerily fascinating.
Title: Re: Arctic Image of the Day
Post by: greatdying2 on July 13, 2014, 02:55:31 PM
Yikes! Maybe some kind of methane volcano?
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on July 13, 2014, 04:09:32 PM
I typed the coordinates into EarthExplorer (http://earthexplorer.usgs.gov/) and came up with this. See Wipneus' Landsat 8 thread (http://forum.arctic-sea-ice.net/index.php/topic,638.0.html) if you want to investigate further!
Title: Re: Arctic Image of the Day
Post by: SteveMDFP on July 13, 2014, 04:15:33 PM
I think it quite resembles Turkmenistan's "Door to Hell," though that one has been burning for 40 years:
http://www.huffingtonpost.com/2013/11/20/door-of-hell_n_4311694.html (http://www.huffingtonpost.com/2013/11/20/door-of-hell_n_4311694.html)
(http://i.huffpost.com/gen/1473701/thumbs/o-GATES5-570.jpg)
Title: Re: Arctic Image of the Day
Post by: TerryM on July 13, 2014, 07:09:49 PM
Smoking Hills, a self igniting coal seam & shale oil deposit in the Northwest Territories has been burning for a very long time. First reported by John Franklin in 1826 it's been burning ever since & now is a tourist destination for Arctic Cruises from Nome.
http://www.packridgecruises.explorertravel.co.uk/ports/index.htm?port_id=429 (http://www.packridgecruises.explorertravel.co.uk/ports/index.htm?port_id=429)


Terry
Title: Re: Arctic Image of the Day
Post by: jdallen on July 13, 2014, 09:03:40 PM
If it's been faked, then give them an oscar for special effects, and for then not overplaying it.

My money would be on it being caused by a small meteorite. A sinkhole wouldn't have any rubble around the edge.

Whatever the cause, it's eerily fascinating.

The rubble isn't uniform enough to be a meteorite, IMO.  It looks more to me to be eruptive - almost like a maar - from some gas build up that reached sufficient pressure to blow out the overlying material.
Title: Re: Arctic Image of the Day
Post by: jdallen on July 13, 2014, 09:07:16 PM
Nares straight has indeed shattered and is in motion.  Worldview from 12 July 2014.  Note the increased surface melt on the ice.

(http://map2.vis.earthdata.nasa.gov/imagegen/index.php?TIME=2014193&extent=-472160,-1018880,-114784,-716800&epsg=3413&layers=MODIS_Terra_CorrectedReflectance_TrueColor,arctic_coastlines_3413&format=image/jpeg&width=698&height=590)
Title: Re: Arctic Image of the Day
Post by: jdallen on July 13, 2014, 09:43:43 PM
Yikes! Maybe some kind of methane volcano?

Regarding the crater, found this for structures along the Atlantic continental margin.

http://onlinelibrary.wiley.com/doi/10.1029/2004JB002969/pdf (http://onlinelibrary.wiley.com/doi/10.1029/2004JB002969/pdf)

A different structure:

http://geolog.egu.eu/wp-content/uploads/2014/02/Patomsky-1024x682.jpg (http://geolog.egu.eu/wp-content/uploads/2014/02/Patomsky-1024x682.jpg)

In addition, it may be possible we are misinterpreting the debris around the edge of the crater.  It may actually be infill disruption rather than material blown out.

http://www.psiee.psu.edu/research/featured_research/gooseff_permafrost.asp (http://www.psiee.psu.edu/research/featured_research/gooseff_permafrost.asp)
Title: Re: Arctic Image of the Day
Post by: Wipneus on July 14, 2014, 08:47:33 AM
Re. permafrost pit.

Here is a Landsat 8 image from 29th of June with those coordinates in the centre. Image is about 4.5km wide.
Title: Re: Arctic Image of the Day
Post by: Wipneus on July 14, 2014, 08:56:37 AM
20km east of the previous image I found this. Click for full resolution image.
Title: Re: Arctic Image of the Day
Post by: jdallen on July 14, 2014, 10:28:37 AM
Interesting.  Looks like drill sites, m'thinks. (second image)

I'm not sure the 1st image has caught our pit.

Drilling would imply gas or oil.  Either could generate pressure in pockets under the permafrost; more so if drilling has disturbed the underlying stratigraphy.
Title: Re: Arctic Image of the Day
Post by: lanevn on July 14, 2014, 11:51:12 AM
It is huge gas field Bovanenkovo http://en.wikipedia.org/wiki/Bovanenkovo_gas_field (http://en.wikipedia.org/wiki/Bovanenkovo_gas_field)
Title: Re: Arctic Image of the Day
Post by: Jim Pettit on July 15, 2014, 03:08:09 PM
The large amount of rubble surrounding the sinkhole in the aerial images suggests overturning, though not like you'd see with an impactor, but rather--as several have noted--of the type that would be expected from the sudden expansion of subsurface gas. However, the ground-level video doesn't appear to match the aerial views, as the latter is almost completely devoid of the rubble displayed in the former. Too, the latter appears substantially larger than the former, telling me that either these are two separate things, or the ground level video was taken at a later date after the hole widened, causing much of the rubble-strewn perimeter to fall into it.

Interesting, anyway...
Title: Re: Arctic Image of the Day
Post by: johnm33 on July 15, 2014, 04:49:54 PM
My 2c, in some of these parts the frozen ground goes down 1000m and 500m is common, so a meteorite shock wave turning the excavated cylinder to steam and only a small % of debris big enough not to be scattered for miles, then summer arrives and the permafrost upper layer dissolves and sheds its burden into the void.
 Anyone know how to get googleearth to gauge the depth?
Title: Re: Arctic Image of the Day
Post by: jdallen on July 15, 2014, 05:23:49 PM
My 2c, in some of these parts the frozen ground goes down 1000m and 500m is common, so a meteorite shock wave turning the excavated cylinder to steam and only a small % of debris big enough not to be scattered for miles, then summer arrives and the permafrost upper layer dissolves and sheds its burden into the void.
 Anyone know how to get googleearth to gauge the depth?

Sorry, it really does not have the the character necessary for a strike.  The debris is too assymetric, and one sufficient to produce a crater that size would have generated a fiery multi megaton explosion; something unlikely to have been missed.

Jim, I agree, the video and satellite images don't look like the same locations.
Title: Re: Arctic Image of the Day
Post by: Rubikscube on July 15, 2014, 05:28:50 PM
I can't see how the aerial photo matches the ground photo at all. Neither the surrounding rubble nor the shape of the hole itself matches (it looks by the way quite suicidal to be standing were the video is taken). If the first one (aerial photo) is real, it looks like a combination of a crater and a sinkhole, which means that an explosion triggered the formation of a sinkhole. In the frames between 9 and 12 second you can clearly see a cave like feature at the bottom, which might be the cause of the sinkhole. It also appears to be plenty of water down there, but that is not necessarily a strange thing.
Title: Re: Arctic Image of the Day
Post by: Atomant on July 15, 2014, 05:46:53 PM
http://www.dailymail.co.uk/travel/travel_news/article-2693105/Giant-hole-appears-Siberia-Huge-crater-emerges-end-world.html (http://www.dailymail.co.uk/travel/travel_news/article-2693105/Giant-hole-appears-Siberia-Huge-crater-emerges-end-world.html)
Title: Re: Arctic Image of the Day
Post by: greatdying2 on July 16, 2014, 03:18:55 AM
[url]http://www.dailymail.co.uk/travel/travel_news/article-2693105/Giant-hole-appears-Siberia-Huge-crater-emerges-end-world.html[/url] ([url]http://www.dailymail.co.uk/travel/travel_news/article-2693105/Giant-hole-appears-Siberia-Huge-crater-emerges-end-world.html[/url])

Definitely a UFO.  :o
Jk, good find.
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on July 16, 2014, 02:17:47 PM
Given its location on the Yamal Peninsula, jutting into the Kara Sea which has seen extensive warming over decades, I would think this hole is a spectacular result of permafrost degradation. This peninsula was sea bed 10,000 years ago, an area of continuous permafrost and I suspect the soil is sediment. As a gas rich region, it would not surprise me if permafrost failure would cause the dramatic release of methane. I think it is unlikely that it is due to the gas extraction efforts in the area but that is possible.

The hole may be related to permafrost hydrology where thermokarst drainage weakens adjacent permafrost.

http://publik.tuwien.ac.at/files/PubDat_209968.pdf (http://publik.tuwien.ac.at/files/PubDat_209968.pdf)

The photos above by Wipneus suggests an expanse of thermokarsts in the area which go through a seasonal cycle of filling and drainage.
Title: Re: Arctic Image of the Day
Post by: SteveMDFP on July 16, 2014, 08:50:23 PM
More wildfires, this time from Russia.  The prominent plume of smoke is drifting almost due north, into the Arctic.  The density and extent of smoke, to my eye, looks significantly worse than what we've seen from the Northwest Territories this season.
(http://lance-modis.eosdis.nasa.gov/imagery/subsets/Arctic_r05c06/2014197/Arctic_r05c06.2014197.terra.1km.jpg)
Title: Re: Arctic Image of the Day
Post by: Espen on July 16, 2014, 08:56:25 PM
"looks significantly worse than what we've seen from the Northwest Territories this season"
You mean after legalizing pot in the south? ;)
Title: Re: Arctic Image of the Day
Post by: JayW on July 21, 2014, 03:05:55 AM
I think Shared Humidity mentioned a small cyclone that lingered in the Arctic for several days.  Looking at NASA Worldview,  three small cyclones appear to be in relative close proximity to each other.

http://1.usa.gov/1k7oV2d (http://1.usa.gov/1k7oV2d)
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on July 21, 2014, 02:33:52 PM
I think Shared Humidity mentioned a small cyclone that lingered in the Arctic for several days.


I think it was Werther who spotted it (http://forum.arctic-sea-ice.net/index.php/topic,778.msg30350.html#msg30350) first.

Looking at NASA Worldview,  three small cyclones appear to be in relative close proximity to each other.


Most intriguing. They're still visible on Terra today: http://1.usa.gov/1nNlGHL (http://1.usa.gov/1nNlGHL)

Title: Re: Arctic Image of the Day
Post by: seattlerocks on July 21, 2014, 04:36:45 PM
Yeah they have similar size and look as Werther's. This time these ones are not traveling fast like that one. And they form under a (much bigger) low instead of that foggy HP (remember the golf ball).

They form a nice isosceles triangle. mmm. Magic

Really, this thing must have been described before.
Title: Re: Arctic Image of the Day
Post by: jdallen on July 21, 2014, 06:01:44 PM
Yeah they have similar size and look as Werther's. This time these ones are not traveling fast like that one. And they form under a (much bigger) low instead of that foggy HP (remember the golf ball).

They form a nice isosceles triangle. mmm. Magic

Really, this thing must have been described before.
Three probable features of this spring to mind.

1) driven in greater part or totally by local advection.
2) little or no atmospheric sheer is present to disrupt them.
3) advection driven by local evaporation from leads.

I wonder if they may be getting spun up by the huge expanses of open water in the Chukchi and Laptev?
Title: Re: Arctic Image of the Day
Post by: Espen on July 22, 2014, 05:53:58 PM
Ice is back in Barrow (short summer  8))
Title: Re: Arctic Image of the Day
Post by: Siffy on July 22, 2014, 06:08:18 PM
Ice is back in Barrow (short summer  8))

Is that from over night freeze or from ocean currents pushing ice there?
Title: Re: Arctic Image of the Day
Post by: Phil. on July 22, 2014, 09:17:45 PM
Ice is back in Barrow (short summer  8))

Is that from over night freeze or from ocean currents pushing ice there?

Pushed it there, if you look at the animation you can see it clear and then flow back in.
Title: Re: Arctic Image of the Day
Post by: jdallen on July 24, 2014, 12:17:36 AM
Soot much?

From EODIS, coast of Nunavit on the left, Victoria Island top.

(http://map2.vis.earthdata.nasa.gov/imagegen/index.php?TIME=2014204&extent=-2096384,-1459712,-1800448,-1203200&epsg=3413&layers=MODIS_Terra_CorrectedReflectance_TrueColor,arctic_coastlines_3413&format=image/jpeg&width=1156&height=1002)
Title: Re: Arctic Image of the Day
Post by: jdallen on July 25, 2014, 10:37:21 AM
Requires no explanation.

http://www.nwtfire.com/cms/nwt-fire-map (http://www.nwtfire.com/cms/nwt-fire-map)
Title: Re: Arctic Image of the Day
Post by: Yuha on July 25, 2014, 11:23:13 AM
Requires no explanation.

[url]http://www.nwtfire.com/cms/nwt-fire-map[/url] ([url]http://www.nwtfire.com/cms/nwt-fire-map[/url])


The stats to go with that map:
http://up.nwtfire.com/sites/default/files/2014-07-24_currentfiresituation.html (http://up.nwtfire.com/sites/default/files/2014-07-24_currentfiresituation.html)

That's 209 active fires including 5 new ones in the last 24 hours.
Most of the fires (165) are not being fought at all, presumably because they are in the middle of wilderness and represent no immediate danger to people or property.
Title: Re: Arctic Image of the Day
Post by: Espen on July 27, 2014, 12:32:54 PM
Tobias Ø ( http://da.wikipedia.org/wiki/Tobias_%C3%98 (http://da.wikipedia.org/wiki/Tobias_%C3%98) http://en.wikipedia.org/wiki/Tobias_Island (http://en.wikipedia.org/wiki/Tobias_Island))

http://www.groenlandselskab.dk/uploads///File/PDF/TG/tobias_o_TG01_2009.pdf (http://www.groenlandselskab.dk/uploads///File/PDF/TG/tobias_o_TG01_2009.pdf)
:

 
Title: Re: Arctic Image of the Day
Post by: pikaia on August 02, 2014, 10:03:54 AM
Arctic melt pond.

(http://eoimages.gsfc.nasa.gov/images/imagerecords/84000/84113/singlemeltpond_pho_2014197.jpg)

http://earthobservatory.nasa.gov/IOTD/view.php?id=84113 (http://earthobservatory.nasa.gov/IOTD/view.php?id=84113)
Title: Re: Arctic Image of the Day
Post by: nukefix on August 02, 2014, 04:25:02 PM
Icebergs and ice melange exiting Iulissat Icefjord, Sentinel-1 SAR image on 19.7.2014
Title: Re: Arctic Image of the Day
Post by: Espen on August 03, 2014, 02:05:40 PM
This happens every year, just north of Norway:
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on August 03, 2014, 05:26:54 PM
Fog?
Title: Re: Arctic Image of the Day
Post by: Espen on August 03, 2014, 05:37:49 PM
No algae. 
Title: Re: Arctic Image of the Day
Post by: Espen on August 04, 2014, 08:42:36 PM
This is an image of Zachariae Isstrøm, to me it looks like a Red Indian, do you see that too?
Title: Re: Arctic Image of the Day
Post by: Bob Wallace on August 04, 2014, 08:51:18 PM
Recessed forehead sometimes seen in southern Mexico.  I didn't understand where the profiles came from in Mayan ruins until riding a local bus one day and a woman turned sideways to me.  Very distinctive.
Title: Re: Arctic Image of the Day
Post by: Espen on August 04, 2014, 09:07:32 PM
Recessed forehead sometimes seen in southern Mexico.  I didn't understand where the profiles came from in Mayan ruins until riding a local bus one day and a woman turned sideways to me.  Very distinctive.

I guess it comes from those low rocky door frames?
Title: Re: Arctic Image of the Day
Post by: jdallen on August 04, 2014, 09:09:47 PM
Looks like the profile on an old US Indian head penny.
Title: Re: Arctic Image of the Day
Post by: Bob Wallace on August 04, 2014, 09:29:03 PM
We've drifted far off topic, but I'll add this as I step back onto the ice...

Head shaping has been done on all continents from time to time.  The Mayans and other Native American groups practiced it at times.

http://en.wikipedia.org/wiki/Artificial_cranial_deformation (http://en.wikipedia.org/wiki/Artificial_cranial_deformation)

(http://i619.photobucket.com/albums/tt275/Bob_Wall/head.gif) (http://s619.photobucket.com/user/Bob_Wall/media/head.gif.html)
Title: Re: Arctic Image of the Day
Post by: A-Team on August 06, 2014, 03:26:49 PM
Some of the newer satellite digital elevation mapping brings in a whole new world of accuracy, allowing photorealistic perspective views among other things. Here is Isunnguata Sermia in southwestern Greenland: 1135 pixels wide.
Title: Re: Arctic Image of the Day
Post by: gideonlow on August 07, 2014, 08:37:27 AM
Very cool "wake" coming off Henrietta Island in this morning's Terra Modis:
Title: Re: Arctic Image of the Day
Post by: Espen on August 10, 2014, 06:30:02 PM
Holy shit, I didn't touch that button!
Title: Re: Arctic Image of the Day
Post by: epiphyte on August 10, 2014, 06:31:56 PM
Poof.
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on August 10, 2014, 07:16:02 PM
Sips on well iced glass of Wild Turkey.   8)
Title: Re: Arctic Image of the Day
Post by: Bob Wallace on August 10, 2014, 08:32:38 PM
What a difference 8 days can make...



(http://i619.photobucket.com/albums/tt275/Bob_Wall/2014-08-01-Edited1.png) (http://s619.photobucket.com/user/Bob_Wall/media/2014-08-01-Edited1.png.html)


August 1, 2014



(http://i619.photobucket.com/albums/tt275/Bob_Wall/2014-08-09-Edited.png) (http://s619.photobucket.com/user/Bob_Wall/media/2014-08-09-Edited.png.html)


August 9, 2014

Expect an Extent crash....
Title: Re: Arctic Image of the Day
Post by: Espen on August 10, 2014, 09:26:32 PM
What a beautiful day:

Please click on image to enlarge!
Title: Re: Arctic Image of the Day
Post by: greatdying2 on August 13, 2014, 01:23:43 AM
Nice view today of Ellesmere Island and the gap to its north.

(http://i.imgur.com/xgZDj8Wl.jpg)

Full resolution (2.1 MB): http://imgur.com/xgZDj8W (http://imgur.com/xgZDj8W)
Title: Re: Arctic Image of the Day
Post by: helorime on August 20, 2014, 10:27:18 PM
I just like the curls in this fram transport melt
Title: Re: Arctic Image of the Day
Post by: Bruce on August 21, 2014, 05:53:51 PM
I just like the curls in this fram transport melt
Can someone tell (or show) me what these curls are comprised of? I see this stuff in various places as the final stage of an area becoming open water, but I've never been quite clear on what it is. Is it slushy stuff, or just very small floes, or water-logged ice, or is it foam, or...? Any pictures of it from (near) the surface?
Title: Re: Arctic Image of the Day
Post by: jdallen on August 21, 2014, 10:55:06 PM
I just like the curls in this fram transport melt
Can someone tell (or show) me what these curls are comprised of? I see this stuff in various places as the final stage of an area becoming open water, but I've never been quite clear on what it is. Is it slushy stuff, or just very small floes, or water-logged ice, or is it foam, or...? Any pictures of it from (near) the surface?
Good question. I'll speculate its larger extents of ice disintegrated into a melange of flows under 200m in size.

I'll also speculate that ice in that state is another element contributing to the positive fluctuations in area we see - ice which has come apart over a wide area and spread out.

I need software, gridded data, and most important, more time to determine if its more than just speculation...
Title: Re: Arctic Image of the Day
Post by: helorime on August 22, 2014, 06:54:29 AM
Here is some from MODIS at a resolution of 250M/pixil so yeah, lots of chucks of stuff, giant slushy.  These are actually pretty big pieces.  The are only small relatively speaking and they do melt fast.
Title: Re: Arctic Image of the Day
Post by: DavidR on August 22, 2014, 10:38:10 AM
I just like the curls in this fram transport melt
Can someone tell (or show) me what these curls are comprised of? I see this stuff in various places as the final stage of an area becoming open water, but I've never been quite clear on what it is. Is it slushy stuff, or just very small floes, or water-logged ice, or is it foam, or...? Any pictures of it from (near) the surface?
Good question. I'll speculate its larger extents of ice disintegrated into a melange of flows under 200m in size.

I'll also speculate that ice in that state is another element contributing to the positive fluctuations in area we see - ice which has come apart over a wide area and spread out.

I need software, gridded data, and most important, more time to determine if its more than just speculation...
This appears to  have been caused by a small cyclone that  went through on the 12th August.  Prior to that there were plenty of floes up to  20km across in the area, after that just 600 km of curly slush running down the Greenland sea. 

According  to  Wipneus's figures area and extent went up about 20% in the next three days. Then they started to  drop again.
Title: Re: Arctic Image of the Day
Post by: Icebird on August 22, 2014, 11:04:33 AM
I just like the curls in this fram transport melt
Can someone tell (or show) me what these curls are comprised of? I see this stuff in various places as the final stage of an area becoming open water, but I've never been quite clear on what it is. Is it slushy stuff, or just very small floes, or water-logged ice, or is it foam, or...? Any pictures of it from (near) the surface?
Hey jdallen, try to put some crushed ice in a big bin or the kitchen sink and watch how it moves when it's melting. I think that the swirling is a part of gravity between the interconnected ice that is left. And the difference between (warmer) and colder water has influence 2
Good question. I'll speculate its larger extents of ice disintegrated into a melange of flows under 200m in size.

I'll also speculate that ice in that state is another element contributing to the positive fluctuations in area we see - ice which has come apart over a wide area and spread out.

I need software, gridded data, and most important, more time to determine if its more than just speculation...
This appears to  have been caused by a small cyclone that  went through on the 12th August.  Prior to that there were plenty of floes up to  20km across in the area, after that just 600 km of curly slush running down the Greenland sea. 

According  to  Wipneus's figures area and extent went up about 20% in the next three days. Then they started to  drop again.
Title: Re: Arctic Image of the Day
Post by: Phil. on August 22, 2014, 03:04:23 PM
I just like the curls in this fram transport melt

Can someone tell (or show) me what these curls are comprised of? I see this stuff in various places as the final stage of an area becoming open water, but I've never been quite clear on what it is. Is it slushy stuff, or just very small floes, or water-logged ice, or is it foam, or...? Any pictures of it from (near) the surface?


When you get mixing of two fluids in a flow like this you get vortices forming at the interface, the ice in the one flow is acting as a tracer.  You sometimes see similar patterns with clouds, check out von Karman vortex streets.
http://www.brockmann-consult.de/CloudStructures/karman-vortex-description.htm (http://www.brockmann-consult.de/CloudStructures/karman-vortex-description.htm)
You can see something similar where two rivers join:
http://a1.typepad.com/6a01116860210d970c019b0385c2d9970c-pi (http://a1.typepad.com/6a01116860210d970c019b0385c2d9970c-pi)
Title: Re: Arctic Image of the Day
Post by: Espen on August 23, 2014, 08:43:40 PM
You may think these islands are down in the tropics somewhere, nope it is Prince Charles Island in Foxe Basin, Nunavut Canada.

The polar bear seems a bit confused too!
Title: Re: Arctic Image of the Day
Post by: diablobanquisa on August 24, 2014, 11:11:04 AM
First snow at Eureka:

(http://images.meteociel.fr/im/2863/PEARL_1040_omb4.jpg)

Title: Re: Arctic Image of the Day
Post by: ghoti on August 28, 2014, 01:26:03 AM
Interesting how chaotic ice movement can result in a very square hole northeast of Greenland

Title: Re: Arctic Image of the Day
Post by: nukefix on August 28, 2014, 02:54:38 PM
Jakobshaven ice-stream calving-front imaged by Sentinel-1 SAR, 17.8.2014. Note in the lower right corner how differentiation between the ice-stream and ice melange with icebergs can be hard.
Title: Re: Arctic Image of the Day
Post by: nukefix on August 29, 2014, 06:30:16 PM
Arcuate crevasses on the trunk of PIG, Sentinel-1 dual-pol 23/08/2014. The scale of this thing is mind-boggling - the width of the scene is 70km!  :o ??? :-X

edit: oops this is Antarctica, not Arctic. Cool shit anyway :)
Title: Re: Arctic Image of the Day
Post by: ghoti on September 03, 2014, 08:46:39 PM
BTW Andreas Muenchow wrote up a great explanation of the swirls and eddies of ice seen this year in the Greenland sea.

http://icyseas.org/2014/08/22/east-greenland-current-instabilities/ (http://icyseas.org/2014/08/22/east-greenland-current-instabilities/)
Title: Re: Arctic Image of the Day
Post by: gideonlow on September 13, 2014, 08:30:05 AM
I can't really figure-out exactly what's going on here, but: Beautiful!

From http://climate.audubon.org/article/12-views-warming-world (http://climate.audubon.org/article/12-views-warming-world):

"These opalescent streaks are actually rivulets of glacial meltwater, making their way from ice caps to the sea. The milky appearance comes from all the dissolved sediments, known as rock flour, once locked away in the ice. The tiny rivers’ beauty conceals a dark reality: The country’s more than 300 glaciers are losing 11 billion tons of ice a year. Photo Credit: Solent News/Splash News/Corbis"
Title: Re: Arctic Image of the Day
Post by: Espen on September 14, 2014, 10:04:55 PM
The season is soon over, the black hole is returning to Modis:

http://rapidfire.sci.gsfc.nasa.gov/imagery/subsets/?mosaic=Arctic.2014257.terra.4km (http://rapidfire.sci.gsfc.nasa.gov/imagery/subsets/?mosaic=Arctic.2014257.terra.4km)
Title: Re: Arctic Image of the Day
Post by: viddaloo on September 17, 2014, 08:44:23 PM
BÁRÐARBUNGA: OF LAVA LAKES AND RESERVOIRS:

(http://cryopolitics.files.wordpress.com/2014/09/landsat8bardarbungalarge.jpg)

NASA/USGS TrueColor Landsat 8 image of Bardarbunga and Halslon Reservoir, September 6, 2014.
Title: Re: Arctic Image of the Day
Post by: pikaia on September 18, 2014, 02:25:26 PM
One of the winning images from the Astronomy Photographer of the Year 2014 competition.

(http://www.rmg.co.uk/sites/default/files/es9_james_woodend_aurora_over_a_glacier_lagoon_651.jpg?itok=U2E1_RRR)

http://www.rmg.co.uk/whats-on/exhibitions/astronomy-photographer-of-the-year/2014-winners/earth-and-space (http://www.rmg.co.uk/whats-on/exhibitions/astronomy-photographer-of-the-year/2014-winners/earth-and-space)
Title: Re: Arctic Image of the Day
Post by: solartim27 on September 21, 2014, 09:17:52 PM
Cross post from ASI
WTF?
Title: Re: Arctic Image of the Day
Post by: jdallen on September 22, 2014, 05:25:40 AM
Dramatic but not that significant in itself, solartime27.

More to the point is the huge body of open water, still open at high latitude.

The refreeze begins.  Now we wonder over how much ice will return.
Title: Re: Arctic Image of the Day
Post by: Espen on October 06, 2014, 04:42:43 AM
Some serious sea ice cracking north of the Canadian Archipelago:
Title: Re: Arctic Image of the Day
Post by: jdallen on October 06, 2014, 09:22:25 PM
Some serious sea ice cracking north of the Canadian Archipelago:
A result of there being nothing to hold the pack in place, perhaps.

I wonder if cracking like this has some future implications?
Title: Re: Arctic Image of the Day
Post by: nukefix on October 22, 2014, 12:25:08 PM
Sentinel-1 EW image off the coast of Svalbard, 16.10.2014 at 06:14, dual-pol HH/HV, scene width 400km, at various zoom levels.
Title: Re: Arctic Image of the Day
Post by: pikaia on November 03, 2014, 10:19:12 AM
(http://apod.nasa.gov/apod/image/1411/greencompany_rive_960.jpg)

from NASA's Astronomy Picture of the day.
http://apod.nasa.gov/apod/ap141103.html (http://apod.nasa.gov/apod/ap141103.html)
Title: Re: Arctic Image of the Day
Post by: ChrisReynolds on November 17, 2014, 08:49:38 PM
Thanks for the link Pikia, without it I was convinced that was photo-shopped.

PS - Thanks Nukefix, great images. Is there a public source of those sort of images (like Terra/MODIS rapidfire?)
http://rapidfire.sci.gsfc.nasa.gov/realtime/ (http://rapidfire.sci.gsfc.nasa.gov/realtime/)
Title: Re: Arctic Image of the Day
Post by: A-Team on November 18, 2014, 03:15:23 PM
Here is the slope map of Greenland computed from the surface elevation map. Note that Greenland is basically very flat -- a logarithmic color scale is needed to display subtle differences. However colors chosen by the authors did not do that very well so I re-worked the image in Gimp using the Hue tool, keeping both the native resolution provided to the journal (for which a pdf image extractor is needed) and staying within the blog's 700 pixel width constraint so it will display without compression.

Except it doesn't -- the blog has a secret file size maximum and so it needs a click to open separately and another click after that to reach full size 690 x 1299. It cannot be compressed further as jpg (like the image above, just 193k) without ruining its value.

Guessing that it cost $25,000,000 of science dollars to generate this image or $30 per pixel, every dot counts. I believe the authors submitted it to the journal at full experimental ground resolution (though they flattened coastline and lat,lon on top their precious data). It's very expensive data to throw away if at the very end it has to be displayed as here at 1/3 its size.

Below the blog software has taken it upon itself to replace the user-submitted image with their own jpg_thumb.png without warning or prior approval -- an unacceptable coding practice, because saving the image to desktop then saves the wrong file.

Elevation and elevation change of Greenland and Antarctica derived from CryoSat-2
V. Helm, A. Humbert, and H. Miller
http://www.the-cryosphere.net/8/1539/2014/ (http://www.the-cryosphere.net/8/1539/2014/)
Title: Re: Arctic Image of the Day
Post by: pikaia on November 20, 2014, 08:54:33 PM
Batman:
(https://pbs.twimg.com/media/B2zlvkyIUAAuuAf.jpg)
Title: Re: Arctic Image of the Day
Post by: Wipneus on November 23, 2014, 05:52:05 PM
The polar night falls over Jan Mayen between Greenland and Norway. The Beerenberg (bear mountain) volcano lights up in the low sun (5 degrees above the horizon).
Title: Re: Arctic Image of the Day
Post by: diablobanquisa on November 24, 2014, 06:15:51 PM
Sea ice arrives in Kimmirut

(http://images.meteociel.fr/im/8592/webcam_eqd8.jpg)

Title: Re: Arctic Image of the Day
Post by: Pmt111500 on November 30, 2014, 05:13:37 PM
Hmm, I wonder what the airflow at 70 hPa (stratosphere) level today looks:
Title: Re: Arctic Image of the Day
Post by: Espen on November 30, 2014, 05:45:03 PM
Hmm, I wonder what the airflow at 70 hPa (stratosphere) level today looks:

Looks like someone is watching us with binoculars, scary!
Title: Re: Arctic Image of the Day
Post by: ChrisReynolds on December 09, 2014, 09:50:58 PM
PMT111500,

It's the same dumbell we had last winter.

EDIT I finally pulled my finger out and looked at the climatology in the stratosphere. That dumbell is the normal for winter.
Title: Re: Arctic Image of the Day
Post by: pikaia on December 14, 2014, 11:20:10 AM
Mount Asgard, Baffin Island.

(http://images.nationalgeographic.com/wpf/media-live/photos/000/862/cache/mount-asgard-baffin-canada_86233_990x742.jpg)

http://photography.nationalgeographic.com/photography/photo-of-the-day/mount-asgard-baffin-canada/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+ng%2Fphotography%2Fphoto-of-the-day+%28National+Geographic+Photo+of+the+Day%29 (http://photography.nationalgeographic.com/photography/photo-of-the-day/mount-asgard-baffin-canada/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+ng%2Fphotography%2Fphoto-of-the-day+%28National+Geographic+Photo+of+the+Day%29)
Title: Re: Arctic Image of the Day
Post by: A-Team on December 15, 2014, 12:30:47 AM
Wintery scene in frost-fringed Greenland captured by space shuttle photography? No, just something I made by accident taking the slope of the digital elevation map. The wedge on right center is NEGIS, the northeast Greenland ice stream.
Title: Re: Arctic Image of the Day
Post by: Espen on December 21, 2014, 05:47:26 PM
What happened to the Arctic?

http://rapidfire.sci.gsfc.nasa.gov/imagery/subsets/?mosaic=Arctic.2014354.aqua.4km (http://rapidfire.sci.gsfc.nasa.gov/imagery/subsets/?mosaic=Arctic.2014354.aqua.4km)
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on December 23, 2014, 03:28:06 AM
the situation in the arctic stratosphere appears to be normalizing, right in sync with our first larger snowfall. http://earth.nullschool.net/#current/wind/isobaric/70hPa/orthographic=-347.48,77.01,381 (http://earth.nullschool.net/#current/wind/isobaric/70hPa/orthographic=-347.48,77.01,381)
Title: Re: Arctic Image of the Day
Post by: Wipneus on January 03, 2015, 04:05:15 PM
More fun with Sentinel quick look images by ESA (see Nares Strait thread). Here is Svalbard, composed of three quick-look images. The retreating sea ice in the Barents Sea is visible.  A remarkable feature in the northeast Island (Nordaustlandet) looks like a surging glacier, although I could only find an ice cap over there.

( a little click will give you a bigger picture )
Title: Re: Arctic Image of the Day
Post by: Espen on January 03, 2015, 07:46:35 PM
Hello Wipneus it is Isdomen part of Austfonna.

http://en.wikipedia.org/wiki/Austfonna (http://en.wikipedia.org/wiki/Austfonna)

http://toposvalbard.npolar.no/ (http://toposvalbard.npolar.no/)
Title: Re: Arctic Image of the Day
Post by: crandles on January 04, 2015, 12:04:36 AM
I am certainly not a geologist, however I am wondering if Isdomen is an ice cap and not a glacier and with that image, could the bulge in the coastline from Kapp Mohn to Hartogbukta be an old landslide?

http://stadnamn.npolar.no/stadnamn/Isdomen?ident=6362&lang=en (http://stadnamn.npolar.no/stadnamn/Isdomen?ident=6362&lang=en)

Could a landslide like that cause a mega-tsunami (http://en.wikipedia.org/wiki/Megatsunami) and if so what sort of effect could something like that have on methane hydrates near the affected shorelines?
Title: Re: Arctic Image of the Day
Post by: jdallen on January 04, 2015, 04:58:27 AM
I am certainly not a geologist, however I am wondering if Isdomen is an ice cap and not a glacier


The difference if any is purely semantic. 1400KM3 of ice upwards of 250M thick of ice sounds rather ice cap-ish


and with that image, could the bulge in the coastline from Kapp Mohn to Hartogbukta be an old landslide?
[url]http://stadnamn.npolar.no/stadnamn/Isdomen?ident=6362&lang=en[/url] ([url]http://stadnamn.npolar.no/stadnamn/Isdomen?ident=6362&lang=en[/url])


I'd say doubtful.  Morphologically, I'd expect a landslide to leave a "bite" rather than a "bulge".

Could a landslide like that cause a mega-tsunami ([url]http://en.wikipedia.org/wiki/Megatsunami[/url]) and if so what sort of effect could something like that have on methane hydrates near the affected shorelines?


A quick survey of the stratigraphy and ocean bottom topography strongly suggest to me a large-scale land slip would be improbable to impossible.  Unlike places like the Hawaiian Island's or Azores or similar locations,  the bedrock appears to be well consolidated pre-cambrian metamorphic rocks or similar more recent well consolidated paleozoic (Carboniferous and Permian - remember coal mining is the major economic activity there) and mesozoic assemblages (as compared to layered poorly consolidated basalt flows.  Further, the shelves around the area are quite shallow - less than 250M - as compared to the abyssals that surround the isolated volcanic arc island chains.  In short, there is neither the weakness nor the gradient to prompt a catastrophic event like that.

Now, to speculate *somewhat*, the prompt effect of something like that on hydrates I think would be relatively limited, and would affect only those present directly in the path of the slide.  While the area affected by a megatsunami would be wide, that affected by the *cause* would not.  Further, much of it would be at depth, which while possibly exposing hydrate, would not necessarily prompt it to dissociate.  I'd speculate the ocean bottom directly affected would only amount at most to a few hundred KM2, which I doubt would be sufficient to cause a significant methane release.

I'd be far more concerned about large scale intrusions of warm, salty North Atlantic water into the region.
Title: Re: Arctic Image of the Day
Post by: jdallen on January 04, 2015, 05:28:08 AM
Quick reference stratigraphy map, high level.

http://nhm2.uio.no/norges/litho/svalbard/1-04.jpg (http://nhm2.uio.no/norges/litho/svalbard/1-04.jpg)
Title: Re: Arctic Image of the Day
Post by: Wipneus on January 04, 2015, 09:11:14 AM
Well I did find about the Isdomen (perhaps it means ice cap) but wondered if this outlet glacier has been named separately.

Also it seems to extent much further than the maps that have been provided sofar allow, so I wondered about a recent "surge".

I looked through the available Landsat images, this it definitely a cloudy place. Attached is one of the better ones and quite recently.

Title: Re: Arctic Image of the Day
Post by: Espen on January 04, 2015, 10:18:06 AM
I actually believe the tear dropped rise is Isdomen (nunatak in Greenland), and integrated in Austfonna the largest glacier in "Europe".
Title: Re: Arctic Image of the Day
Post by: Wipneus on January 04, 2015, 10:59:16 AM
The attached sequence shows the difference May 2013- September 2014. The expansion is very well visible.

I did not locate a suitable Landsat 7 image yet, but I believe the big surge could have happened in 2012.

(click req'd)
Title: Re: Arctic Image of the Day
Post by: crandles on January 04, 2015, 11:26:01 AM

A quick survey of the stratigraphy and ocean bottom topography strongly suggest to me a large-scale land slip would be improbable to impossible.

Thank you for detailed reply to my silly speculation.
Title: Re: Arctic Image of the Day
Post by: A-Team on January 04, 2015, 04:09:03 PM
the quick-look images are false colored: Horizontal for Red, Vertical for Green and and average for Blue, or at least so they say.

It seems that some aspect of the ice flow is polarized (bright yellow). I took apart the original image above into its RGB components. The red is fairly featureless (pure white in the flow); the green captures the anomaly as a brighter radar reflection (rougher, more crevasses, flow lines?); the blue originally appeared completely black and utterly featureless.

However after pounding on it with gimp's "Equalize' [histogram], features (bottom panel) popped out again. However the central black of your flow is still a pure black. Returning the modified threesome of grayscales to RGB was thus not so informative (not shown).

Setting the red channel to 50% transparency over 100% green gives the average (not shown). This average has no apparent relationship to the blue channel. Replacing the entirety of the blue channel with pure black or shades of gray shows the six dark grays in the original blue is not doing some subtle wizardry -- it is almost indistinguishable from reconstitutions with pure darker grays.

To summarize, I'm not real sure what they did here or why.
Title: Re: Arctic Image of the Day
Post by: jdallen on January 05, 2015, 05:47:14 AM

A quick survey of the stratigraphy and ocean bottom topography strongly suggest to me a large-scale land slip would be improbable to impossible.

Thank you for detailed reply to my silly speculation.

It was a reasonable question, and you are welcome.  I just happened to be in the rare position of actually having something resembling expertise that could be applied in a reasonable answer.

;)
Title: Re: Arctic Image of the Day
Post by: Wipneus on January 05, 2015, 03:56:25 PM
the quick-look images are false colored: Horizontal for Red, Vertical for Green and and average for Blue, or at least so they say.

...

To summarize, I'm not real sure what they did here or why.

I had some doubts that the documented algorithm (https://sentinel.esa.int/web/sentinel/sentinel-1-sar-wiki/-/wiki/Sentinel%20One/Level-1+Post+Processing+Algorithms#section-Level-1+Post+Processing+Algorithms-QuicklookGeneration) was used.

Quicklook Generation #

Quicklooks are lower resolution images of the product data used to preview the data. Quicklooks are generated by power detecting, averaging and decimating in both azimuth and range directions by a configurable amount. IW and EW SLC product quicklooks are first de-burst and merged.
Single polarisation products are represented with a grey scale image. Dual polarisation products are represented by a single composite color image in RGB with the red channel (R) representing the first polarisation, the green channel (G) representing the second polarisation and the blue channel (B) representing an average of the absolute values of the two polarisations.
Quicklook images are scaled to 8 bit and saved in PNG file format.

Yellow is Blue+Red, so I has a look in gimp myself: the Blue channels is near zero ( zero's and 1's) everywhere. So I think that the Red and Green channels are represented by the H and V polarizations and Blue is either miscalculated or intentionally turned down.
Title: Re: Arctic Image of the Day
Post by: A-Team on January 05, 2015, 11:02:42 PM
Quicklooks are generated by power detecting, averaging and decimating in both azimuth and range directions by a configurable amount. IW and EW SLC product quicklooks are first de-burst and merged.  the blue channel (B) representing an average of the absolute values of the two polarisations.
Better that they provide a real explanation to real users -- someone who knows what all this insider jargon means would not be reading the help page in the first place: "power detecting, averaging and decimating in both azimuth and range directions by a configurable amount. de-burst and merged"

Blue is either miscalculated or intentionally turned down.
I don't see how adding two reasonably ranging positive numbers from R and G could produce 99.6% of the pixels having a grayscale less than 15. They must have crammed values down to the low end with an extreme use of the 'curves' tool in gimp or counterpart. The histogram below is for S1A_EW_GRDM_1SDH_20150103T060735_20150103T060809_004003_004D21_249B.quicklook.png

But if this was just for the pleasing red and yellow optics, they could simply have taken blue identically equal to 1 on the grayscale and gotten something visually indistinguishable, at least on this image. Been there, done that.

But the 'average of the absolute values of the two polarisations' could be a valid re-normalization effort, the purpose being to tone down excesses in the red-green channels. Maybe in some images this takes out gratuitous non-uniformity and mitigates noisy pixels.

I had some doubts that the documented algorithm was used [for blue channel]
Maybe they will give you a free ride on the space shuttle if you alert them to this problem?

Surely they intended square root of sum of the squares rather than sum of absolute values. Then to calculate the overall mean of the whole image and its std deviation, to divide for the multiples of it. These would reside in some small range mostly at the low end, which could be stretched to [0,255] to assign to each pixel in the blue channel.

Finalize the file system and downloads by Q2 2015?!? Holy toledo, that should have been finalized -- using synthetic data -- on the day of the launch. Parallel processing, not serial. They knew exactly what the data would look like the day the design was finalized.
Title: Re: Arctic Image of the Day
Post by: Wipneus on January 07, 2015, 10:01:49 AM

Surely they intended square root of sum of the squares rather than sum of absolute values.


Not if the value represent power (instead of amplitude). I bet they are using power because of the "power detecting" phrase.
Title: Re: Arctic Image of the Day
Post by: A-Team on January 07, 2015, 12:03:45 PM
the blue channel representing an average of the absolute values of the two polarizations.

Power would already be positive, no need for absolute values. Maybe they mean 'average of the absolute value squared 1/2((pol1 x pol1*)+(pol2 x pol2*)) of the two polarizations.' I'm still going with ((pol1 x pol1*)+(pol2 x pol2*))exp1/2, not 1/2[((pol1 x pol1*)exp1/2+(pol2 x pol2*)exp1/2].

In any case, they have not provided a satisfactory explanation of the algorithm nor do we know what was actually applied. It is almost always better to describe a process through an concrete example.

My experience is that when the writer cannot explain clearly what was done, the writer does not really know what was done. Here I picture a self-important engineer giving a harried explanation as he walks out the door to a lowly contract tech writer.

Looking again at the 4th panel above in Reply #400, the blue channel constant color islands do make some sense in the central region though two ragged vertical bars do not have an obvious interpretation. The actual blue channel used has no visual consequences at all so it must serve some 'politically correct' purpose in the scientific imaging context.

In other words, the blue channel is just coming along for the ride but might really be used for something later. It reminds me of Howat using grayscale channels on a DEM to carry the error and date (source) of each pixel in an image, not for making an RGB but to provide (alpha channel) masking.
Title: Re: Arctic Image of the Day
Post by: Peter Ellis on January 07, 2015, 02:16:50 PM
If you're measuring polarisation in two orthogonal directions then shouldn't the average be identical for every pixel?  That's kind of how polarisation works (if I remember my physics from 20 years ago - I'm really a biologist!)

In that case I imagine the blue channel is simply there as a QC channel to spot and exclude contaminated data, and it's deliberately kept to low values so as not to pollute the visual image with QC data.
Title: Re: Arctic Image of the Day
Post by: A-Team on January 08, 2015, 02:30:45 PM
In the histogram panel above, the pixel values in the blue channel are crammed in to [0,16) which to my mind is not coincidentally the square root of the full range of possibilities, 256. (Note ImageJ2 offers sq roots of images.)

I think there is merit in your noting A and B are orthogonal for cross terms in the dot product (A,B)^2. The blue channel might be QC, a carried-along storage channel, a weighted masking device, a correction for very low power pixels, or an advanced statistical tool needed for rational scientific adjustment beyond our mere aesthetic ogling.

If we find all the quicklook blue channels are confined to (0,16), that would be a strong clue. I looked just now at a Nares region quicklook posted by Wipneus, http://forum.arctic-sea-ice.net/index.php/topic,176.msg42492.html#msg42492 (http://forum.arctic-sea-ice.net/index.php/topic,176.msg42492.html#msg42492)

The blue channel range there is [0,9] so still below 16. There are 876 pixels right at 0 for 0.2% of the 415,100 = 700 x 593 image whereas the peak at 2 has 171,912 pixels for 44.1%. The effect of adding a bit of blue to a predominantly yellow = red + green is to push the pixel over towards the diagonal of the color cube (gray).
Title: Re: Arctic Image of the Day
Post by: Wipneus on January 08, 2015, 03:25:27 PM
Making things more confusing I found that the images presented in the graphical search application, and also called "quicklook" are different in this respect. I already knew that they where jpeg instead of png, but the blue channel is fully developed.
Filenames are identical except the documented "quicklook" ends in ".quicklook.png" and these images have "-ql.jpg" endings.

Example, the Severnaya Zemlya" islands yesterday:

Title: Re: Arctic Image of the Day
Post by: A-Team on January 08, 2015, 05:01:22 PM
Making things more confusingimages presented in the graphical search application also called "quicklook" are different. I already knew that they where jpeg instead of png, but the blue channel is fully developed.Filenames are identical except "quicklook" ends in ".quicklook.png" and these images have "-ql.jpg" endings.
Please, please can someone email the ESA help desk to put us out of our misery? Or before they did themselves into a deeper archiving hole

One difference, as you can see below, is they apparently take the square root of the blue channel in what we have been looking at so far. (You can see the same vertical artifact bars in what I posted earlier for Svalbard.) But I am quite concerned about their poor file naming system and above all the possible use of lossy jpeg. These quicklooks are fairly small files that can be losslessly compressed with png.

In the second image below, I replaced the blue channel grayscale with its square root and reconstituted as RGB, with more or less the expected outcome, probably off by a scalar.
Title: Re: Arctic Image of the Day
Post by: Wipneus on January 09, 2015, 12:04:58 PM
Quick-look panorama of the West Greenland coast.

(click to enlarge, but probably won't fit on your single monitor)
Title: Re: Arctic Image of the Day
Post by: A-Team on January 09, 2015, 02:11:03 PM
Gorgeous. Worth noting that top is east and that Jakobshavn and Disko Bay are dead center. Blue channel is, as before, <16. I'm going to try displaying in vertically as width is just 526 pixels... no, blog will does not display that tall even at that width even compressed to a 440 k jpeg. The overlay below has north on top.
Title: Re: Arctic Image of the Day
Post by: A-Team on January 09, 2015, 03:04:49 PM
Below I  'sentinelized' the 07-08 Jan scenes of Nares Strait. That is, the three gray scales were taken as red the 8th, green the 7th and blue just straight black, then composed into RGB color. It kinda shows the new developments in red and yesterday in green. Yellow is where not much changed.
Title: Re: Arctic Image of the Day
Post by: Wipneus on January 10, 2015, 03:38:27 PM
The Sentinel radar uses C-band microwave reflection that is supposed to be rather insensitive to clouds and water vapor. Nevertheless a small cyclone is clearly visible. Perhaps what we are seeing are waves? To the left Greenland, Iceland is just south of this image and the island is Jan Mayen.
 
Title: Re: Arctic Image of the Day
Post by: A-Team on January 10, 2015, 05:09:08 PM
It is worth marking up some of this Sentinel imagery as we gradually figure out what the satellite is seeing (and why).

Here, I am thinking strong wind from the east, a blocking of clouds and a calming effect on waters in the lee of Jan Mayen. With clouds, it seems like there should be more of a difference due to island elevation, least at the saddle, but not so much for calming of water. Not seeing von Kármán vortex eddies, which would be in clouds. They seem to be having technical difficulties in the green channel...

https://en.wikipedia.org/wiki/K%C3%A1rm%C3%A1n_vortex_street
Title: Re: Arctic Image of the Day
Post by: Wipneus on January 11, 2015, 03:06:14 PM
Part of the explanation seems to be the much lower HV signal of open sea compared with land/ice.
From the data files, the average pixel value of the HH image is 504 (16-bit values here), for the HH image it is 91 or about 18%. For comparison an image of NE Greenland, with land ice, rocks and sea ice the average HH pixel value was 1067 and for HV a value of 551, about 50%.

(Channel values are signal amplitudes rather than intensities.)

The attached image of Jan Mayen is created from the HH values with some linear stretching applied.
Compared with an optical Landsat image (https://forum.arctic-sea-ice.net/index.php/topic,416.msg40451.html#msg40451) a typical distortion in SAR images called foreshortening can be seen. The slope of the Beerenberg facing the satellite (which is on the right of this image) is compressed while the slope on the other side has been stretched. The NE Beerenberg slope is more than twice as bright as anything I see in the NE Greenland image.
Title: Re: Arctic Image of the Day
Post by: Wipneus on January 12, 2015, 04:04:57 PM
I cannot help thinking that ESA thinks the Zachariae Isstrom and Nioghalvfjerdsfjorden must be one of the most uninteresting places in Greenland. In the last 7 days they managed to produce 74 Sentinel 1A images of the East Coast of Greenland, none covering the two giant glaciers.
Title: Re: Arctic Image of the Day
Post by: A-Team on January 12, 2015, 04:49:55 PM
It is horrifying to think they might just tossing the raw data for Zachariae. I realize that these satellites produce too many terabytes to store everything and a lot of what they do store will never be requested by a user. Still, maybe a polite letter (citing # of goog scholar Zach studies)?

Meanwhile, your west coast quick-tile was not only very instructive for the land and marine terminating glaciers, but also for the interior ice (mostly shown in the north). In fact the pitmarks and ice divides bore an uncanny resemblance to the surface elevation DEM. I would like to see the coast strip widened to get more of the interior. However one just downloaded for JI was completely blown out in the green interior (pure 255),

I think there would be quite a 'market' for a dramatic red/green image of the entire coastline as well as the interior. Seems like I get different responses to coverage whether I draw a large or tiny rectangle at the search interface. I wonder if it has a small max for the number of responses it seeks to fill a query. https://scihub.esa.int/dhus/

Frustrating to see a little thumbnail icon on the search results but have no way of seeing it at reasonable scale, short of a giga-download (which I can only do, from Excede satellite, between 1-5 am in the morning!).

I still don't see how I go about making my own full scale quicklook from the R and G channels, in this case s1a-ew-grd-hh-20141201t095119-20141201t095223-003524-004252-001.tiff and s1a-ew-grd-hh-20141201t095119-20141201t095223-003524-004252-003.tiff in the 'measurement' subfolder.
Title: Re: Arctic Image of the Day
Post by: Apocalypse4Real on January 13, 2015, 04:41:00 AM
The attached is the Metop 1 AVHRR image of the Nares Strait sea ice collapse over the last few days. I do not recall seeing this in January in the past.

A4R
Title: Re: Arctic Image of the Day
Post by: jdallen on January 13, 2015, 08:27:55 AM
Nares?  Heck, the Beaufort isn't looking particularly happy, Either...
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on January 13, 2015, 12:25:07 PM
Nares?  Heck, the Beaufort isn't looking particularly happy, Either...


An extract from the Canadian Ice Service's latest RADARSAT mosaic (http://www.ec.gc.ca/glaces-ice/default.asp?lang=En&n=DFFA2648-1):

Title: Re: Arctic Image of the Day
Post by: Apocalypse4Real on January 13, 2015, 02:00:08 PM
The Beaufort was broken up by Nov 27 2014, and has gone through waves of fracturing since. Here is the 112714 view.
Title: Re: Arctic Image of the Day
Post by: jdallen on January 13, 2015, 05:44:39 PM
Thank A4R, Jim;

I'd gotten out of the habit of looking at the Canadian Weather Service winter IR and Radar imagery.  I need to start that back up again.  EOSDIS got me spoiled, and I'd stopped browsing once it went dark.

Is it as much that the Beaufort fractured in late November, or that it simply hasn't consolidated since reaching minimum?  There was an immense expanse of open water across the Chukchi and ESS until quite late.  That's reflected in the rather low ice thicknesses across those regions.  Regardless, its not healthy.
Title: Re: Arctic Image of the Day
Post by: Wipneus on January 23, 2015, 02:08:53 PM
A bit late (image is from 2014-12-24) but the image is worth looking at.
Composed with 4 quick-look images, in the lower left corner the Mackenzie river estuary. To the right surprisingly clear broken sea ice and in between fast ice, dark because it is flat.
Title: Re: Arctic Image of the Day
Post by: Espen on January 24, 2015, 09:01:03 PM
Here is something fishy, below Ross Ice Shelf (found 850 km beyond the calving front) :
Title: Re: Arctic Image of the Day
Post by: Espen on February 18, 2015, 07:13:19 PM
Iceberg shadows:

The sun is still low, but the shadows are great, here is an image from Scoresby Sund, February 18 2015, courtesy of Landsat and Daugaard-Jensen Gletscher (there might be a piece or two from Charcot Gletscher and F. Graae Gletscher):
Title: Re: Arctic Image of the Day
Post by: Wipneus on February 19, 2015, 09:32:21 AM
Laptev Feb 13, close up of the Arctic "ice factory".  Processed using ImageMagick and Gimp. Red is HH polarization, Green is HV and Blue is none.

(click for the big picture)
Title: Re: Arctic Image of the Day
Post by: A-Team on February 20, 2015, 04:46:14 PM
There are more things in heaven and earth, oh Modeller,
Than are dreamt of in your philosophy. [Hamlet, scene v, updated]

These are three consecutive north-south slices of ice penetrating radar just below the Petermann Glacier proper and aligned with its flow. The overall size of the Eemian ice upheaval feature exceeds 800 km3.
Title: Re: Arctic Image of the Day
Post by: pikaia on February 22, 2015, 10:32:54 AM
Island in a Lake on an Island in a Lake on an Island!

(http://eoimages.gsfc.nasa.gov/images/imagerecords/85000/85342/victoria_oli_2014233.jpg)

http://earthobservatory.nasa.gov/IOTD/view.php?id=85342 (http://earthobservatory.nasa.gov/IOTD/view.php?id=85342)
Title: Re: Arctic Image of the Day
Post by: nukefix on February 22, 2015, 06:46:58 PM
The Sentinel radar uses C-band microwave reflection that is supposed to be rather insensitive to clouds and water vapor. Nevertheless a small cyclone is clearly visible. Perhaps what we are seeing are waves? To the left Greenland, Iceland is just south of this image and the island is Jan Mayen.
The radar is highly sensitive to sea surface roughness so that it probably what you are seeing.
Title: Re: Arctic Image of the Day
Post by: viddaloo on February 23, 2015, 06:24:40 AM
Nice Sunday shot of (very) green Greenland and the new cyclone south of Iceland.

(http://d22d7v2y1t140g.cloudfront.net/m_13631537_0muLojcRjZMJ.png)
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on February 23, 2015, 10:07:00 AM
Island in a Lake on an Island in a Lake on an Island!

([url]http://eoimages.gsfc.nasa.gov/images/imagerecords/85000/85342/victoria_oli_2014233.jpg[/url])

[url]http://earthobservatory.nasa.gov/IOTD/view.php?id=85342[/url] ([url]http://earthobservatory.nasa.gov/IOTD/view.php?id=85342[/url])


That's nice. I found a couple of examples (from Finland) that are islands in a lake in an island in a lake, the largest was be c. 1.75km long but that one takes the cake being one more I guess  :)
Title: Re: Arctic Image of the Day
Post by: nukefix on March 10, 2015, 03:50:10 PM
Icebergs around the Totten ice-stream in Antarctica:

http://www.polarview.aq/images/105_S1jpgfull/S1A_EW_GRDM_1SSH_20150308T112204_AB07_S_1.final.jpg (http://www.polarview.aq/images/105_S1jpgfull/S1A_EW_GRDM_1SSH_20150308T112204_AB07_S_1.final.jpg)
Title: Re: Arctic Image of the Day
Post by: Espen on March 22, 2015, 06:04:02 PM
Sperm cells captured from the 79 Gletscher:
Title: Re: Arctic Image of the Day
Post by: Espen on March 24, 2015, 08:41:32 PM
The "tropical" island of Jan Mayen with its lagoons along the coast:
Title: Re: Arctic Image of the Day
Post by: nukefix on March 25, 2015, 06:12:44 PM
Amazing sea-ice features between Svalbard and Franz-Josef Land:

http://www.polarview.aq/images/105_S1jpgfull/S1A_EW_GRDM_1SDH_20150325T134957_4D8A_N_1.final.jpg (http://www.polarview.aq/images/105_S1jpgfull/S1A_EW_GRDM_1SDH_20150325T134957_4D8A_N_1.final.jpg)
Title: Re: Arctic Image of the Day
Post by: Sonia on March 26, 2015, 12:51:57 AM
Detail from above link.  I have no idea what would make the loopy line.
Title: Re: Arctic Image of the Day
Post by: viddaloo on March 26, 2015, 01:13:45 AM
Detail from above link.  I have no idea what would make the loopy line.
([url]http://forum.arctic-sea-ice.net/index.php?action=dlattach;topic=416.0;attach=14990;image[/url])

If I were a space alien tasked with making intriguing patterns in corn fields, I'd certainly consider switching to ice graffiti, if I knew how eagerly sea ice was being watched from a growing number of satellites.
Title: Re: Arctic Image of the Day
Post by: jdallen on March 26, 2015, 06:31:09 AM
Detail from above link.  I have no idea what would make the loopy line.
([url]http://forum.arctic-sea-ice.net/index.php?action=dlattach;topic=416.0;attach=14990;image[/url])

If I were a space alien tasked with making intriguing patterns in corn fields, I'd certainly consider switching to ice graffiti, if I knew how eagerly sea ice was being watched from a growing number of satellites.

Never ascribe to mystery what can be explained by a failure of quality control. It looks like a hair or filament of some sort, that got into the mechanism past the inspectors.
Title: Re: Arctic Image of the Day
Post by: viddaloo on March 26, 2015, 06:52:27 AM
I very much doubt it's a hair, JD. How do you suggest a hair got into these computer images? If a real snow/ice feature, I think we can all agree that it must have been some continuous movement, probably by wind (I've seen natural snowballs blow this way in changing wind), but the scale here is so enormous that I'm utterly mystified. Any idea how broad this looping band is?
Title: Re: Arctic Image of the Day
Post by: gideonlow on March 26, 2015, 08:43:44 AM
Attached is the March 25th Aqua-Modis 7-2-1 close-up for the same spot.  Something loopy going-on here?  Occam's Razor would certainly suggest this is caused by something in the image processing chain . . .
Title: Re: Arctic Image of the Day
Post by: Wipneus on March 26, 2015, 09:52:10 AM
The scribble is visible on Sentinel images from Polar View as well (but also directly from the public archives of ESA). I see the feature moving but not with the ice. So somehow it is an artifact, although I don't see how: hair on the lens is not an option.

(click to download a 3MB animation)
Title: Re: Arctic Image of the Day
Post by: Peter Ellis on March 26, 2015, 11:28:57 AM
Don't see why hair on the lens isn't an option. Dirt and contamination is an issue in any mechanism, and this is no exception.  Whatever it is, it's obviously mobile, which explains why it's not been noticed before - presumably it wasn't in the way of the sensor in previous images from the same source.
Title: Re: Arctic Image of the Day
Post by: Wipneus on March 26, 2015, 11:59:00 AM
Don't see why hair on the lens isn't an option. Dirt and contamination is an issue in any mechanism, and this is no exception.  Whatever it is, it's obviously mobile, which explains why it's not been noticed before - presumably it wasn't in the way of the sensor in previous images from the same source.

There is no lens involved. The imaging in SAR is purely in the processing software, based on the timing of the returned signal. Any obstruction of the antenna (beam) would affect all imaged pixels.
(as far as I know of course)
Title: Re: Arctic Image of the Day
Post by: Jim Pettit on March 26, 2015, 01:50:23 PM
I don't believe the curlicue line is an instrumental artefact of any kind, for portions of it stay in place between images--that is, over precisely the same parts of the ice even as the ice itself moves and shifts. However, the line appears to evolve lengthwise over time, with older parts of the curlicue disappearing even as newer parts are created. My guess, then: an icebreaker path (maybe continuing sea trials for Russia's sideways-travelling Baltika?)
Title: Re: Arctic Image of the Day
Post by: Wipneus on March 26, 2015, 02:18:54 PM
Wonderful, I think you nailed it Jim.
Title: Re: Arctic Image of the Day
Post by: Neven on March 26, 2015, 05:04:58 PM
It's Cyrillic. Rough translation: Masha, will you marry me?  ;) ;D
Title: Re: Arctic Image of the Day
Post by: Espen on March 26, 2015, 05:37:31 PM
And now it is spring, the watering hole for all Polar Beers is now opening their service at Kap Jackson / Washington Land:
Title: Re: Arctic Image of the Day
Post by: viddaloo on March 26, 2015, 06:13:05 PM
I don't believe the curlicue line is an instrumental artefact of any kind, for portions of it stay in place between images--that is, over precisely the same parts of the ice even as the ice itself moves and shifts. However, the line appears to evolve lengthwise over time, with older parts of the curlicue disappearing even as newer parts are created.

Good observation, this is what I see, too: A movement from the right edge to the left, and fresher trails on the left.

My guess, then: an icebreaker path (maybe continuing sea trials for Russia's sideways-travelling Baltika?)

No space–aliens?! Dang!  :D
Title: Re: Arctic Image of the Day
Post by: Nightvid Cole on March 29, 2015, 04:00:29 PM
Island in a Lake on an Island in a Lake on an Island!

([url]http://eoimages.gsfc.nasa.gov/images/imagerecords/85000/85342/victoria_oli_2014233.jpg[/url])

[url]http://earthobservatory.nasa.gov/IOTD/view.php?id=85342[/url] ([url]http://earthobservatory.nasa.gov/IOTD/view.php?id=85342[/url])


69.7923954,-108.2398877 for anyone who wants to look on Google Maps...

It's a sub-sub-island (only two "subs".)
Title: Re: Arctic Image of the Day
Post by: silkman on April 01, 2015, 02:33:56 PM
Sparkling clear skies and flying reindeer (?) in Svalbard!

Title: Re: Arctic Image of the Day
Post by: 1rover1 on April 01, 2015, 07:10:12 PM
Would be interesting to add the Churchill Port cam on Hudson's Bay to the webcam page over in sea ice graphs.  http://www.portofchurchill.ca/port-media/live-feed (http://www.portofchurchill.ca/port-media/live-feed)
Title: Re: Arctic Image of the Day
Post by: Neven on April 01, 2015, 10:26:32 PM
Would be interesting to add the Churchill Port cam on Hudson's Bay to the webcam page over in sea ice graphs.  [url]http://www.portofchurchill.ca/port-media/live-feed[/url] ([url]http://www.portofchurchill.ca/port-media/live-feed[/url])


That's pretty cool, but unfortunately I can't 'copy' live camera feeds to the ASIG, only images.
Title: Re: Arctic Image of the Day
Post by: pikaia on April 05, 2015, 11:43:03 AM
(http://eoimages.gsfc.nasa.gov/images/imagerecords/85000/85642/arctic_dms_2015091.jpg)

Laser scan of the sea ice.

http://earthobservatory.nasa.gov/IOTD/view.php?id=85642 (http://earthobservatory.nasa.gov/IOTD/view.php?id=85642)
Title: Re: Arctic Image of the Day
Post by: Wipneus on April 10, 2015, 09:35:27 AM
A square feature in the Fram Strait marks the edge of the ice pack to the west and the north to more open ocean to the south-east.

(image credit: Polar View supplied image from ESA Sentinel 1A)
Title: Re: Arctic Image of the Day
Post by: pikaia on April 12, 2015, 10:21:46 AM
Sentinels of the Arctic.

(http://apod.nasa.gov/apod/image/1205/snowtrees_bonfadini_960.jpg)

http://apod.nasa.gov/apod/ap150412.html (http://apod.nasa.gov/apod/ap150412.html)
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on April 12, 2015, 04:35:32 PM
Sentinels of the Arctic.

([url]http://apod.nasa.gov/apod/image/1205/snowtrees_bonfadini_960.jpg[/url])

[url]http://apod.nasa.gov/apod/ap150412.html[/url] ([url]http://apod.nasa.gov/apod/ap150412.html[/url])


OK....this needs to be explained.....   :o
Title: Re: Arctic Image of the Day
Post by: Espen on April 12, 2015, 04:37:02 PM
I think you will find a tree under the snow?
Title: Re: Arctic Image of the Day
Post by: crandles on April 12, 2015, 04:38:13 PM
Explanation: Who guards the north? Judging from the above photograph, possibly giant trees covered in snow and ice. The featured picture was taken a few winters ago in Finnish Lapland where weather can include sub-freezing temperatures and driving snow. Surreal landscapes sometimes result, where common trees become cloaked in white and so appear, to some, as watchful aliens. Far in the distance, behind this uncommon Earthly vista, is a more common sight -- a Belt of Venus that divided a darkened from sunlit sky as the Sun rose behind the photographer. Of course, in the spring, the trees thaw and Lapland looks much different.
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on April 12, 2015, 04:40:51 PM
I think you will find a tree under the snow?

I'm not so sure about this...
Title: Re: Arctic Image of the Day
Post by: Espen on April 12, 2015, 04:53:52 PM
It could be one those guys, but
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on April 12, 2015, 05:32:04 PM
It could be one those guys, but

 ;D ;)
Title: Re: Arctic Image of the Day
Post by: Espen on April 12, 2015, 09:21:25 PM
The sea north of Svalbard is extremely empty of sea-ice, I feel sorry for the polar bears:
Title: Re: Arctic Image of the Day
Post by: jdallen on April 15, 2015, 06:04:40 AM
Bering Sea via Lance-Modis
Title: Re: Arctic Image of the Day
Post by: jdallen on April 15, 2015, 06:07:22 AM
For comparison, last year, -2 days.

http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r06c03.2014106.terra (http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r06c03.2014106.terra)
Title: Re: Arctic Image of the Day
Post by: jdallen on April 21, 2015, 05:42:08 PM
Shot of the Bering via WorldView, from a few days ago.  Highlights just how weak the ice is, even with "northerlies". (Click for full resolution)

EOSDIS link:

https://earthdata.nasa.gov/labs/worldview/?p=arctic&l=MODIS_Terra_CorrectedReflectance_Bands367,Reference_Labels%28hidden%29,Reference_Features%28hidden%29,Coastlines&t=2015-04-17&v=-9683319.918656182,-2575079.502869974,2367112.0813438175,3200280.497130026
Title: Re: Arctic Image of the Day
Post by: Wipneus on April 22, 2015, 08:11:47 AM
Sentinel 1A image of Point Barrow. The pinkish color is open water (at least that is how UH AMSR2 sea ice concentration sees it). Fast ice to the east is dark and is clearly different form the ice in the main pack.

(click for the bigger image)
Title: Re: Arctic Image of the Day
Post by: Espen on May 02, 2015, 09:03:55 PM
My latest contribution was deleted due to different sense of humor!
Hate censorship though!
Title: Re: Arctic Image of the Day
Post by: diablobanquisa on May 06, 2015, 11:46:47 PM
Can we see  Greenlandic mountains from the O-Buoy 9?

(http://images.meteociel.fr/im/4716/webcam_xuh8.jpg)

Title: Re: Arctic Image of the Day
Post by: Jim Hunt on May 07, 2015, 12:56:21 AM
Can we see  Greenlandic mountains from the O-Buoy 9?


I was wondering that myself. We can certainly see ITP 59 (http://batchgeo.com/map/itp-59) in the foreground. Here also is one I prepared earlier:

Title: Re: Arctic Image of the Day
Post by: Neven on May 09, 2015, 07:16:06 PM
Here's a nice image Jim Hunt posted on the ASIB:

(http://greatwhitecon.info/wp-content/uploads/2015/03/LC8-MackenzieDelta-20150504-400.jpg)
Title: Re: Arctic Image of the Day
Post by: Rubikscube on May 09, 2015, 09:19:28 PM
Can we see  Greenlandic mountains from the O-Buoy 9?

The shore is only about 70-80 km away so it has to be Greenland. And that is really cool.
Title: Re: Arctic Image of the Day
Post by: nukefix on May 15, 2015, 04:29:40 PM
This is (ant)arctic but anyway, a S-1 multitemporal RGB of the Larsen B ice-shelf remnant with the following dates:

R=18.4.2015
G=30.4.2015
B=12.5.2015
Title: Re: Arctic Image of the Day
Post by: plinius on May 16, 2015, 08:18:29 PM
due to the popularity of obuoy 9:
(http://obuoy.datatransport.org/data/obuoy/var/plots/buoy9/camera/webcam.jpg?timestamp=1431800211657)

pretty nice lead in view. Buoy is on the move towards fram strait again.
Title: Re: Arctic Image of the Day
Post by: helorime on May 17, 2015, 09:36:14 AM
Well drat.  I just mentioned that on the "What the buoys are telling us" thread before I spotted that you had put a picture from it here.  ::)
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on May 17, 2015, 11:07:43 AM
By way of comparison, here's one (http://greatwhitecon.info/resources/arctic-sea-ice-images/summer-2014-images/#OBuoy9) from last summer too!

Title: Re: Arctic Image of the Day
Post by: JayW on May 23, 2015, 12:13:50 PM
Anyone know what these dark steaks that come off of these two islands in the Canadian Archipelago are?  I believe the island are called Ellef Rignes and Amund Rignes.  They have been present for days, best I can tell there are salt domes on Ellef Rignes. Would it melt snow?  The snow cover overlay really highlights the island with blue. (Second attachment)

https://earthdata.nasa.gov/labs/worldview/?p=arctic&l=MODIS_Terra_CorrectedReflectance_TrueColor,MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_Snow_Cover,Reference_Labels(hidden),Reference_Features(hidden),Coastlines&t=2015-05-21&v=-1411124.1539678937,-918139.4650359474,-755764.1539678937,-582267.4650359474 (https://earthdata.nasa.gov/labs/worldview/?p=arctic&l=MODIS_Terra_CorrectedReflectance_TrueColor,MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_Snow_Cover,Reference_Labels(hidden),Reference_Features(hidden),Coastlines&t=2015-05-21&v=-1411124.1539678937,-918139.4650359474,-755764.1539678937,-582267.4650359474)
Title: Re: Arctic Image of the Day
Post by: plinius on May 23, 2015, 04:14:15 PM
Sunset over the lake district...
(http://ipab.apl.washington.edu/camera1.jpg)

pretty close to the alaska mainland, though.

Title: Re: Arctic Image of the Day
Post by: P-maker on May 27, 2015, 10:14:10 AM
JayW,

"Anyone know what these dark steaks that come off of these two islands in the Canadian Archipelago are?"

It is most likely tiny fragments of Anhydrite crystals, which have been blown off the top of the salt diapirs on these islands. Anhydrite only has a Moh hardness of 3-3.5, which is less than the hardness of ice crystals at ordinary winter temperatures in these tracts.

The elongated streaks of dark particles, you see on the sea ice, may reflect the dominant wind direction from NE during the last major snow storm(s) in the area.
Title: Re: Arctic Image of the Day
Post by: silkman on June 02, 2015, 09:36:49 AM
Beautifully clear picture of the Bering Strait and the Chukchi on Modis this morning. The difference in residual snow cover on the Alaskan and Siberian sides is striking.
Title: Re: Arctic Image of the Day
Post by: oren on June 02, 2015, 05:44:03 PM
Thanks. Beautiful and instructive picture.
Title: Re: Arctic Image of the Day
Post by: Vergent on June 04, 2015, 10:26:00 PM
(https://scontent-lax1-1.xx.fbcdn.net/hphotos-xft1/v/t1.0-9/11403430_694058164055355_9115045865841794277_n.jpg?oh=f2d2f690c26d35b84cfafb4689dfe8c0&oe=560268E0)

Sublime!
Title: Re: Arctic Image of the Day
Post by: epiphyte on June 05, 2015, 07:07:23 AM
Wow. Who took that?
Title: Re: Arctic Image of the Day
Post by: Jim Pettit on June 05, 2015, 01:29:07 PM
Wow. Who took that?


Alexey Trofimov

http://yourshot.nationalgeographic.com/profile/619051/ (http://yourshot.nationalgeographic.com/profile/619051/)
Title: Re: Arctic Image of the Day
Post by: Vergent on June 05, 2015, 02:40:16 PM
Jim,

Thanks, I received this image via Facebook without attribution.

Verg

Edit: BTW the location is lake Baikal.
Title: Re: Arctic Image of the Day
Post by: Yuha on June 05, 2015, 04:23:42 PM
Alexey Trofimov

[url]http://yourshot.nationalgeographic.com/profile/619051/[/url] ([url]http://yourshot.nationalgeographic.com/profile/619051/[/url])


He has many other amazing photos of ice too. Some examples:

http://yourshot.nationalgeographic.com/photos/3304682/ (http://yourshot.nationalgeographic.com/photos/3304682/)
http://yourshot.nationalgeographic.com/photos/5865492/ (http://yourshot.nationalgeographic.com/photos/5865492/)
http://yourshot.nationalgeographic.com/photos/5845574/ (http://yourshot.nationalgeographic.com/photos/5845574/)
http://yourshot.nationalgeographic.com/photos/5865479/ (http://yourshot.nationalgeographic.com/photos/5865479/)
Title: Re: Arctic Image of the Day
Post by: Espen on June 06, 2015, 05:20:47 PM
Nice images of black ice, one of the magic wonders of nature ;) ;)
Title: Re: Arctic Image of the Day
Post by: Yuha on June 08, 2015, 02:06:07 AM
This is what meltponds on sea ice look like up close.

The image from August 11, 2014 in the Petermann fjord. It is a DigitalGlobe satellite image via Google Maps:
https://goo.gl/maps/PlgCq (https://goo.gl/maps/PlgCq)
Title: Re: Arctic Image of the Day
Post by: A-Team on June 08, 2015, 03:46:50 AM
Yes that new digiglobe imagery for Petermann is absolutely fantastic -- I had no idea what I was looking at before on Landsat or Sentinel images which do not quite have the resolution to match intrinsic feature size.

Below, the central drainage channel in the Petermann ice sheet looked like it had a transverse fault, but no, just a change in channel.

However the biggest thing to happen to Greenland glaciology since the invention of the sled dog is the availability of fast  free adaptive contrast adjustment, CLAHE (see FIJI, ImageJ2 process menu) -- snow on ice has really poor contrast and the Digiglobe images are generically enhanced, not specifically adapted to the Greenland ice sheet. They're even better than they look.

Applying the filter is like lifting a sheet of wax paper off the original image!
Title: Re: Arctic Image of the Day
Post by: oren on June 08, 2015, 12:12:12 PM
Wow. Just wow.
Title: Re: Arctic Image of the Day
Post by: icefest on June 09, 2015, 01:12:49 PM
That's beautiful a-team. Just plain, incredibly, beautiful.
Title: Re: Arctic Image of the Day
Post by: plinius on June 10, 2015, 11:00:54 PM
not so beautiful, but a bit shocking for me. MODIS shows Lake Hazen on Ellesmere thawing/breaking up.
Title: Re: Arctic Image of the Day
Post by: Rubikscube on June 11, 2015, 05:44:57 PM
A spectacular picture from the O-buoy12 cam.
Title: Re: Arctic Image of the Day
Post by: Siffy on June 11, 2015, 05:57:51 PM
A spectacular picture from the O-buoy12 cam.

Looks like a layer of fresh/recent snow but the snow seems kind of wet?
Title: Re: Arctic Image of the Day
Post by: Rubikscube on June 11, 2015, 06:07:31 PM
Looks like a layer of fresh/recent snow but the snow seems kind of wet?

Yes, it seems like the skies have just cleared after a snowfall. Don't think the snow is wet though, it has been below 0 all day. The darker patches are older melt ponds with snow on top
Title: Re: Arctic Image of the Day
Post by: Siffy on June 11, 2015, 06:25:24 PM
Looks like a layer of fresh/recent snow but the snow seems kind of wet?


Yes, it seems like the skies have just cleared after a snowfall. Don't think the snow is wet though, it has been below 0 all day. The darker patches are older melt ponds with snow on top


Hmm looks like you are probably right.

On the other hand Buoy 11 seems to be sporting signs of melt ponding.

(http://i60.tinypic.com/28luq14.jpg)

so bit of a mixed bag in terms of snow fall vs melt on the buoys. I wish we had an absolute albedo measure of the ice pack to compare different years to.
Title: Re: Arctic Image of the Day
Post by: plinius on June 11, 2015, 10:57:41 PM
Actually, I have a bit of a puzzle:
arctic.io/explorer

If you zoom into Lake Hazen and also change the dates, you see that the northeastern part darkened two days ago, was fully dark yesterday and is white again today. Any idea what was there? Perfectly flat/smooth ice surface?
Title: Re: Arctic Image of the Day
Post by: jdallen on June 15, 2015, 08:32:50 AM
Here's what's currently being counted as "extent" in the North Baffin:

Title: Re: Arctic Image of the Day
Post by: Chuck Yokota on June 15, 2015, 03:13:07 PM
plinius -- At a guess; lake effect fog, formed when colder air moved onto the lake, and the water evaporating from the lake water condensed as fog.
Title: Re: Arctic Image of the Day
Post by: A-Team on June 15, 2015, 09:25:21 PM
Here's what's currently being counted as "extent" in the North Baffin:

Below are a couple of fog-lifts. Not rocket science to do before measurement.
Title: Re: Arctic Image of the Day
Post by: jdallen on June 16, 2015, 03:11:25 AM
Here's what's currently being counted as "extent" in the North Baffin:

Below are a couple of fog-lifts. Not rocket science to do before measurement.
Thank you for emphatically emphasizing my point, A-Team.

I expect Baffin will shortly be contributing to a rapid plunge in extent.
Title: Re: Arctic Image of the Day
Post by: solartim27 on June 17, 2015, 01:20:29 AM
H stands for ? ( besides smoke )
Title: Re: Arctic Image of the Day
Post by: Nick_Naylor on June 17, 2015, 02:15:49 AM
Looking at this image from the day after tomorrow, it seems the permafrost is starting to tell us something  :o
Title: Re: Arctic Image of the Day
Post by: epiphyte on June 17, 2015, 07:00:34 AM
Looking at this image from the day after tomorrow, it seems the permafrost is starting to tell us something  :o

Wasn't "The Day After Tomorrow" the one which had global warming desalinating the North Atlantic, thereby disrupting the gulf-stream and suddenly triggering a new ice age, which showed it was serious by instantly popsicle-izing the Whitehouse, leading to the least credible aspect of the movie... the environmentalist epiphany of the decidedly Cheney-esque erstwhile vice-president?

In the real world - if that's what the permafrost is really saying, then Exxon, Shell & BP are probably fighting over who gets to frack the methane out of it as we speak ;)
Title: Re: Arctic Image of the Day
Post by: Wipneus on June 19, 2015, 07:59:14 PM
Detailed image of a frozen lead, and now melting in the East Siberian Sea, as discussed in the "home brew" thread.
Title: Re: Arctic Image of the Day
Post by: Neven on June 19, 2015, 11:13:56 PM
Detailed image of a frozen lead, and now melting in the East Siberian Sea, as discussed in the "home brew" thread.

Okay, wipneus, admit it: you took a picture of broken safety glass with a really good camera.  ;) ;D
Title: Re: Arctic Image of the Day
Post by: Juan C. García on June 20, 2015, 11:07:18 PM
Nullschool is the new Van Gogh...  ;)

http://earth.nullschool.net/#current/wind/surface/level/orthographic=-65.74,97.19,786 (http://earth.nullschool.net/#current/wind/surface/level/orthographic=-65.74,97.19,786)

Title: Re: Arctic Image of the Day
Post by: solartim27 on June 23, 2015, 02:04:16 AM
Time to clean the satellite?
Title: Re: Arctic Image of the Day
Post by: plinius on June 24, 2015, 04:04:59 PM
Barrow Sea-Ice break-up happening right now.
A bit surprising that it survived so long - there was some luck though with ice being pushed onto the coastal ice ridges for several days (and currently bearing 50F air temperature...). Despite that, quite early for a break-up in Barrow, normally this is in the first or second July week.
Video:
http://feeder.gina.alaska.edu/feeds/webcam-uaf-barrow-seaice-images/movies/current-1_day_animation.webm (http://feeder.gina.alaska.edu/feeds/webcam-uaf-barrow-seaice-images/movies/current-1_day_animation.webm)

And Radar:
http://feeder-movie.gina.alaska.edu/movie_definitions/barrow-radar-realtime/movies/current.webm (http://feeder-movie.gina.alaska.edu/movie_definitions/barrow-radar-realtime/movies/current.webm)
Title: Re: Arctic Image of the Day
Post by: epiphyte on June 24, 2015, 05:15:13 PM
Time to clean the satellite?

I've seen that on a number of images, all along roughly that line of latitude, on different days.... At a guess  they are blind spots caused by something blocking the outgoing signal to those locations?  E.g. perhaps the mount of an antenna which needs to be oriented in a conflicting direction, in order to maintain communication,  at the time that the SAR array needs to be projecting energy at those spots?
Title: Re: Arctic Image of the Day
Post by: nukefix on June 25, 2015, 05:29:42 PM
Time to clean the satellite?
I've seen that on a number of images, all along roughly that line of latitude, on different days.... At a guess  they are blind spots caused by something blocking the outgoing signal to those locations?  E.g. perhaps the mount of an antenna which needs to be oriented in a conflicting direction, in order to maintain communication,  at the time that the SAR array needs to be projecting energy at those spots?
Those holes must be indicative of something going awry in the post-processing of the images by Polarview as they do not look like any known types of SAR image artifacts.
Title: Re: Arctic Image of the Day
Post by: solartim27 on June 27, 2015, 02:14:59 AM
Any thoughts on this dark region?  I don't think it is melt ponds covered by snow as discussed above on June 11.  It is a broad region that gets larger and darker over several days.  My hunch would be smoke deposition, but could it be fresh, or last years melting through? Lat / Long around 83 / 138
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on June 27, 2015, 02:53:20 AM
My hunch would be smoke deposition

I wouldn't be sure of that in the CAB, but there's plenty over North America just at the moment:
Title: Re: Arctic Image of the Day
Post by: jdallen on June 27, 2015, 09:01:02 AM
More smoke over the Beaufort.
Title: Re: Arctic Image of the Day
Post by: Laurent on June 27, 2015, 11:28:37 AM
Solartime27
I think it is Algual bloom, it was initiated in Jun 11 when the ice did broke momentarily.
http://1.usa.gov/1Hm6Iab (http://1.usa.gov/1Hm6Iab)
Title: Re: Arctic Image of the Day
Post by: Nick_Naylor on June 27, 2015, 05:38:20 PM
I have noticed that the Arctic seems noticeably darker over the entire expanse than the last couple of years, so I thought I'd try to make that more obvious by doing the following:
- Take the seven day period of June 20-26 in each of the 2013, 2014 and 2015 seasons.
- Average the seven images from each year together to smooth out effect of weather.
- "Dark-blend" the seven images from each year to eliminate clouds as far as possible
- Boost the contrast identically for each year's image to make the differences easier to see.

Here's what the result looks like. 2015 is clearly less reflective than either of the last two years. This is confirmed by histogram analysis, which shows a significantly lower mode than 2013 or 2014.
I didn't do the same for 2012 because the original images for that year don't look like they were processed consistently.

Edit: I should explain what the darken blending mode in Photoshop does for those who might be unfamiliar with it. Suppose I have two similar images stacked on top of each other. Normally, the top layer would completely obscure the bottom layer. However, if I set the mode to "Darken", then each pixel in the visible image would reflect only the darker pixel from image A and image B, regardless of which is on top. So if image A and B were identical except for a cloud that has moved within the frame, the cloud would magically disappear. By the same token, if image A is white ice with the exception of a crack that has moved to a new location in image B, the crack would appear in both locations in the final image. So the "darken" mode exaggerates the degree of fragmentation of mobile ice under clear skies.
Title: Re: Arctic Image of the Day
Post by: Neven on June 27, 2015, 11:21:58 PM
Very nice image, Nick! Definitely an Arctic image of the day. But maybe you can copy your comment and post it in the 2015 Melting Season thread?

And I might ask you to do another one of those in July, as I'm going to focus mainly on whether 2015 is going to beat 2013 and 2014. Very smart and elegant method.
Title: Re: Arctic Image of the Day
Post by: Nick_Naylor on June 28, 2015, 01:07:32 AM
Very nice image, Nick! Definitely an Arctic image of the day. But maybe you can copy your comment and post it in the 2015 Melting Season thread?

And I might ask you to do another one of those in July, as I'm going to focus mainly on whether 2015 is going to beat 2013 and 2014. Very smart and elegant method.

Thanks Neven. I copied this message to the 2015 Melting Season thread & I will do a similar analysis from July 20-26 when available.
Title: Re: Arctic Image of the Day
Post by: Vergent on June 28, 2015, 05:35:36 PM
(http://i.imgur.com/IkIjBTv.jpg)

North pole cam, 87N. Melt ponds have formed and albedo has dropped. For comparison, here is July 1, 2012:

(http://i.imgur.com/gjDfHNL.jpg)

Verg

edit: sp
Title: Re: Arctic Image of the Day
Post by: Peter Ellis on June 28, 2015, 10:54:13 PM
Interesting to see that the Pole is slightly ahead of 2012 in forming melt ponds.

However, it's important to note that this year started with only 2cm of snow (recorded at time of buoy placement), whereas 2012 started with 30cm, and was down to about 10cm by the start of July - i.e. a loss of 20cm of snow. So another interpretation of that data would say that up to the end of june / start of July, 2012 had seen 10x as much melting as 2015.

In other words, while 2015 started the year with a heck of a head start, most of that has now been lost, and we will need a drastic change in weather conditions to see anything remotely approaching 2012.
Title: Re: Arctic Image of the Day
Post by: jdallen on June 28, 2015, 11:01:55 PM
Interesting to see that the Pole is slightly ahead of 2012 in forming melt ponds.

However, it's important to note that this year started with only 2cm of snow (recorded at time of buoy placement), whereas 2012 started with 30cm, and was down to about 10cm by the start of July - i.e. a loss of 20cm of snow. So another interpretation of that data would say that up to the end of june / start of July, 2012 had seen 10x as much melting as 2015.

In other words, while 2015 started the year with a heck of a head start, most of that has now been lost, and we will need a drastic change in weather conditions to see anything remotely approaching 2012.

Agree - 2015 had a head start - lowest Maxima on record.
Overstated - that 2012 had 10x as much melt as 2015
Not certain - 2015 will need a drastic weather change to reach 2012. 

In short, I think my point here, is I don't think 2015 is in better shape right now than 2012 was.  Given approximately equivalent weather, or even weather similar to what we have right now, I think 2015 is going to make a serious run at 2012.   I think it will require far *better* weather for ice preservation to prevent 2015 from displacing one of the lowest three years on record.  I still think we have an even chance to reach or pass 2012.
Title: Re: Arctic Image of the Day
Post by: Espen on July 01, 2015, 08:40:10 PM
Out of context but with a Whole Lotta Love ;):

https://www.youtube.com/watch?v=QxcCC2g1Ke0 (https://www.youtube.com/watch?v=QxcCC2g1Ke0)
Title: Re: Arctic Image of the Day
Post by: jdallen on July 03, 2015, 04:11:08 AM
Everyone, I give you the Siberian coast.

Fast ice from the Chukchi to the Kara is shattering or covered with extensive, significant low-albedo melt ponds, from the coast to several hundred KM from the coast.

This ice is now in the full grip of serious melt, whether area and extent numbers demonstrate it, or not.
Title: Re: Arctic Image of the Day
Post by: seaicesailor on July 03, 2015, 06:59:49 AM
Everyone, I give you the Siberian coast.

Fast ice from the Chukchi to the Kara is shattering or covered with extensive, significant low-albedo melt ponds, from the coast to several hundred KM from the coast.

This ice is now in the full grip of serious melt, whether area and extent numbers demonstrate it, or not.

The edge is passing Wrangler island very fast. Which reminds me of certain idiot foreseeing it wouldn't get even close.
Title: Re: Arctic Image of the Day
Post by: helorime on July 03, 2015, 04:01:33 PM
Look at what has happened suddenly at obuoy 9 as it has gotten to the northeast tip of Greenland!(http://)
Title: Re: Arctic Image of the Day
Post by: jdallen on July 04, 2015, 08:36:12 PM
Nares Strait, July 3rd.  Clear skies, melt ponds and fracturing ice.
Title: Re: Arctic Image of the Day
Post by: gideonlow on July 05, 2015, 04:55:44 AM
Check out the feature between about 78 and 82 degrees N. and 150E and 165E,  in the daily AMSR2 concentration map.  It seems to be remarkably intact.  Maybe from a major fracturing event in the Beaufort?  There seems to perhaps be an interference pattern of Two different fracturing events to the SW of the main feature. 
Title: Re: Arctic Image of the Day
Post by: A-Team on July 06, 2015, 01:27:07 AM
The preview Landsat image provided by EarthExplorer -- which gets used every day somewhere on these forums -- is formed from bands 7,3,1 used for RGB. That works quite well to produce somewhat natural color on land but not so well on ice. I found bands 5,3,1 work much better because band 5 has much better inherent contrast than band 7.

To make the image below, the bands are loaded into ImageJ2, put in a stack, co-cropped to the region of interest, then enhanced for optimal local contrast (CLAHE menu item) still in 16-bit mode, and finally combined into RGB. The top layer is cut away diagonally twice with the 'free select tool' and 'invert selection' to get the effect. I have not found pan-sharpening with band 8 (eg replacing band 5, up-scaling bands 1 and 3) to be helpful on the color.

Click on the split animation to see the difference at full resolution (30 m) -- it's a remarkable improvement.
Title: Re: Arctic Image of the Day
Post by: Nightvid Cole on July 06, 2015, 05:32:52 PM
High Concentration Ice "eagle" (my drawing on CT map):


Title: Re: Arctic Image of the Day
Post by: Nick_Naylor on July 06, 2015, 06:15:26 PM
Is the eagle welcoming the ice to the endangered species list?
Title: Re: Arctic Image of the Day
Post by: Tor Bejnar on July 06, 2015, 08:00:40 PM
Is that a hole through its heart or lung?  Or does it 'just miss' this time?
Title: Re: Arctic Image of the Day
Post by: jdallen on July 07, 2015, 05:32:06 AM
Eastern Kara sea land fast ice has shattered completely, and is now well on its way to destruction.
Title: Re: Arctic Image of the Day
Post by: jdallen on July 07, 2015, 05:48:13 AM
And here we have, the best part of 900,000KM2 of ice which is about to disappear, directly.
Title: Re: Arctic Image of the Day
Post by: Yuha on July 07, 2015, 10:11:28 AM
The difference between multi year ice and first year ice is now clearly visible in Beaufort.
Title: Re: Arctic Image of the Day
Post by: slow wing on July 07, 2015, 10:16:53 AM
Yes, nice image!
Title: Re: Arctic Image of the Day
Post by: gideonlow on July 07, 2015, 10:16:35 PM
Smoke from the Alaska fires is definitely drifting over a substantial part of the ice now: http://1.usa.gov/1Hci5No (http://1.usa.gov/1Hci5No)

I wonder if enough is making it down to ice-level to offset the reduced insolation with reduced albedo.

EDIT: Image Attached.
Title: Re: Arctic Image of the Day
Post by: Nightvid Cole on July 07, 2015, 10:29:39 PM
Is the eagle welcoming the ice to the endangered species list?

No, it's leaving the Arctic before the polar bears get too hungry!

Is that a hole through its heart or lung?  Or does it 'just miss' this time?

It's a mark from when it was attacked by an Arctic fox - fortunately it escaped.

 :)
Title: Re: Arctic Image of the Day
Post by: jdallen on July 08, 2015, 07:28:36 AM
What a difference two weeks makes.
Title: Re: Arctic Image of the Day
Post by: jdallen on July 09, 2015, 07:32:53 AM
I apologize for not orienting these images so they are in closer alignment.

However, I offer July 8, 2012 and July 8, 2015 images of the Beaufort, Chukchi and ESS from Banks Island/Straight to the New Siberian Islands.

From the hip, I'd say the 2015 ice is in much worse shape.
Title: Re: Arctic Image of the Day
Post by: helorime on July 09, 2015, 05:10:59 PM
Greenland from my favorite buoy this summer, obuoy 9 passing very close to the northeastern tip of the island.

edited for wrong image.
Title: Re: Arctic Image of the Day
Post by: Espen on July 09, 2015, 10:27:58 PM
One of many incredible sceneries in Greenland, Skjoldungeelv in Amdrup Højland leading into Danmark Fjord (please click to enlarge):
Title: Re: Arctic Image of the Day
Post by: Phil. on July 10, 2015, 01:29:32 AM
Some recent visitors to the buoys!

(http://psc.apl.washington.edu/northpole/NPEO2015/2015cam2_1.jpg)
Title: Re: Arctic Image of the Day
Post by: jdallen on July 11, 2015, 03:11:05 AM
Surprisingly large areas of open water in the Foxe basin for this time of year.
Title: Re: Arctic Image of the Day
Post by: Tor Bejnar on July 14, 2015, 03:49:51 AM
Here is a hunk of ice near Long. 150 W, Lat. 71 N from the Healy (http://forum.arctic-sea-ice.net/index.php/topic,436.100.html).  Most of what I've seen on the ship's cam is much thinner and much higher concentration.
(http://icefloe.net/Aloftcon_Photos/albums/2015/20150713-2201.jpeg)
Title: Re: Arctic Image of the Day
Post by: Vergent on July 14, 2015, 01:41:02 PM
(http://icefloe.net/Aloftcon_Photos/albums/2015/20150714-1101.jpeg)

Pina colada, anyone?
Title: Re: Arctic Image of the Day
Post by: jdallen on July 14, 2015, 05:55:27 PM
([url]http://icefloe.net/Aloftcon_Photos/albums/2015/20150714-1101.jpeg[/url])

Pina colada, anyone?

*THAT* may be how our extent is increasing/persisting - ice disintegrating into the near slush we're looking at in this image.
Title: Re: Arctic Image of the Day
Post by: Espen on July 18, 2015, 08:03:54 PM
The last remains of sea ice in Sea of Okhotsk:
Title: Re: Arctic Image of the Day
Post by: Buddy on July 18, 2015, 10:13:45 PM
*THAT* may be how our extent is increasing/persisting - ice disintegrating into the near slush we're looking at in this image.

YES......
Title: Re: Arctic Image of the Day
Post by: jdallen on July 20, 2015, 10:04:09 PM
Magnificent exposure of the Foxe basin today (2015-07-20)
Title: Re: Arctic Image of the Day
Post by: Nick_Naylor on July 21, 2015, 06:13:44 PM
There is no longer any doubt that humans have left our fingerprint on the Arctic ice cap ;D

(http://map2.vis.earthdata.nasa.gov/image-download?TIME=2015197&extent=-101957.24426331624,374140.14948801806,82106.75573668376,521596.14948801806&epsg=3413&layers=MODIS_Terra_CorrectedReflectance_TrueColor,Graticule&opacities=1,1&worldfile=false&format=image/jpeg&width=719&height=576)
EOSDIS Worldview July 16
Latitude=85.1-86.44, Long=126-150
Title: Re: Arctic Image of the Day
Post by: Nightvid Cole on July 21, 2015, 06:19:55 PM
Magnificent exposure of the Foxe basin today (2015-07-20)

Beautiful blooms on the Eastern shores...
Title: Re: Arctic Image of the Day
Post by: Tor Bejnar on July 21, 2015, 06:43:38 PM
LOL, Nick.  I'd wear gloves if I went that far north (and a hair net) and oversized boots. (no fingerprints, DNA or traceable footprints  ;D)
Title: Re: Arctic Image of the Day
Post by: Neven on July 21, 2015, 08:16:12 PM
Good one, Nick.  ;D
Title: Re: Arctic Image of the Day
Post by: greatdying2 on July 22, 2015, 06:19:07 PM
Smoke Over the Greenland Sea

(http://www.nasa.gov/sites/default/files/thumbnails/image/image07222015_250m.jpg)
http://www.nasa.gov/image-feature/smoke-over-the-greenland-sea (http://www.nasa.gov/image-feature/smoke-over-the-greenland-sea)
Title: Re: Arctic Image of the Day
Post by: Nightvid Cole on July 23, 2015, 07:50:45 PM
Earth is the target of an alien attack on the polar regions using a giant blow torch:

Title: Re: Arctic Image of the Day
Post by: Neven on July 23, 2015, 08:12:45 PM
Quick it's not too late, we still have time!  ;D
Title: Re: Arctic Image of the Day
Post by: Vergent on July 23, 2015, 08:14:33 PM
Quick it's not too late, we still have time!  ;D

Quick, activate SkyNet! What could go wrong? ;)

Title: Re: Arctic Image of the Day
Post by: Tor Bejnar on July 23, 2015, 10:25:38 PM
I thought we weren't getting to 1M km2 until September.  Apparently we got there about March 1st. ;D
Why were you keeping this from us, Neven?
Title: Re: Arctic Image of the Day
Post by: Neven on July 23, 2015, 10:30:10 PM
I thought it'd be a nice surprise.  8)
Title: Re: Arctic Image of the Day
Post by: Tensor on July 23, 2015, 11:27:55 PM
I can already see the claims of a "Recovery". 
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on July 24, 2015, 12:29:41 AM
Landsat 8 image of the Vilkitsky Strait on July 19th. No need for nuclear icebreakers there this year!
Title: Re: Arctic Image of the Day
Post by: Tommy on July 26, 2015, 05:05:50 PM
Algae bloom in Barents Sea.
July 25
Title: Re: Arctic Image of the Day
Post by: solartim27 on July 27, 2015, 07:50:42 AM
Aliens playing Tic-Tac-Toe over Russia
Title: Re: Arctic Image of the Day
Post by: helorime on July 28, 2015, 05:05:19 AM
Big ol' Floes disintegrating and going "poof" in the Beaufort July 22 on left, 27 on right.
Title: Re: Arctic Image of the Day
Post by: greatdying2 on July 28, 2015, 06:30:21 AM
Big ol' Floes disintegrating and going "poof" in the Beaufort July 22 on right, 27 on left.
Oho! Oops...  :D
Title: Re: Arctic Image of the Day
Post by: Espen on July 29, 2015, 06:40:05 PM
The seasonal "Barents Green Garden"

http://rapidfire.sci.gsfc.nasa.gov/imagery/subsets/?subset=Arctic_r02c05.2015210.aqua.250m (http://rapidfire.sci.gsfc.nasa.gov/imagery/subsets/?subset=Arctic_r02c05.2015210.aqua.250m)
Title: Re: Arctic Image of the Day
Post by: jdallen on July 30, 2015, 07:27:03 AM
Nice shot from 7/29 of Nares Strait showing how the "plug" there has disintegrated, and how the ice is generally heading for the exit.

Notice to the west, land-fast ice breaking off of the coast of Ellesmere into Baffin Bay.
Title: Re: Arctic Image of the Day
Post by: stackmaster on July 30, 2015, 02:26:28 PM
It appears the persistent high over Greenland and consistent winds blowing north are fighting the current flowing from the CAB to Baffin, slowing there movement of ice to the south.  Arctic Bouy program SST maps show cooling south of Nares.  Looks like the breakdown of the arch has possibly increased the surface/shallow flow through the straight as SST was higher there before.
Title: Re: Arctic Image of the Day
Post by: guygee on July 31, 2015, 03:00:23 AM
Franz Josef Lands in the Arctic, July 28-30, from LANCE-MODIS System.
(http://i304.photobucket.com/albums/nn183/guygee_2008/2015-07-28-30_Franz_Josef_Lands-sm.gif)
The beautiful swirls that look like "smoke" I surmise is grease ice, produced by fresh water melting off the the glaciers and perhaps the pack edge as well. Looks to be a good indicator of the local ocean currents as well as melting and/or refreezing conditions, depending on its persistence.
Title: Re: Arctic Image of the Day
Post by: Patrick on July 31, 2015, 04:15:33 PM
Show some love for the Arctic...

(http://abload.de/img/zcu4b.jpg)
Source: NASA Worldview (https://earthdata.nasa.gov/labs/worldview/?p=arctic&l=MODIS_Aqua_CorrectedReflectance_TrueColor(hidden),MODIS_Terra_CorrectedReflectance_TrueColor,Reference_Labels(hidden),Reference_Features(hidden),Coastlines(hidden)&t=2015-07-31&v=384838.66204532597,-300105.3843007998,1367878.662045326,180150.6156992002)
Title: Re: Arctic Image of the Day
Post by: Andreas T on July 31, 2015, 07:47:31 PM
Franz Josef Lands in the Arctic, July 28-30, from LANCE-MODIS System.
([url]http://i304.photobucket.com/albums/nn183/guygee_2008/2015-07-28-30_Franz_Josef_Lands-sm.gif[/url])
The beautiful swirls that look like "smoke" I surmise is grease ice, produced by fresh water melting off the the glaciers and perhaps the pack edge as well. Looks to be a good indicator of the local ocean currents as well as melting and/or refreezing conditions, depending on its persistence.

remember the highest resolution on MODIS is 250m per pixel!
This would turn everything in the photo below http://icefloe.net/Aloftcon_Photos/index.php?album=2015&page=5 (http://icefloe.net/Aloftcon_Photos/index.php?album=2015&page=5) into a few amorphously grey pixels
from memory that is how the stuff looked Healy was going through at the time 201507141101
Title: Re: Arctic Image of the Day
Post by: guygee on July 31, 2015, 09:41:54 PM
Thank you Andreas. My eye was initially drawn to the grease ice swirling in the ocean currents, such as the small outflow on the coast above the "heart" in your image, but I now also see the smoke, a diffuse brown haze blowing in the wind, as would be expected.
Title: Re: Arctic Image of the Day
Post by: Andreas T on July 31, 2015, 10:10:51 PM
sorry, guygee, if I didn't express myself clearly, the point I wanted to make is that what looks like grease ice in a satellite image can be  a mix of quite large chunks of ice, broken up bits of floes, which is very different from the grease ice which form when sea water freezes.
Title: Re: Arctic Image of the Day
Post by: 12Patrick on July 31, 2015, 10:41:06 PM
Big ol' Floes disintegrating and going "poof" in the Beaufort July 22 on right, 27 on left.
Looks like you got the dates reversed??
Title: Re: Arctic Image of the Day
Post by: Vergent on July 31, 2015, 11:35:17 PM
(http://i.imgur.com/XnU8IFF.png)

Santa had a visitor.

Verg  ;)
Title: Re: Arctic Image of the Day
Post by: helorime on August 01, 2015, 08:59:48 AM
: helorime  July 28, 2015, 05:05:19 AM

    Big ol' Floes disintegrating and going "poof" in the Beaufort July 22 on right, 27 on left.

Looks like you got the dates reversed??

yep, fixed.  Thanks!
Title: Re: Arctic Image of the Day
Post by: Rubikscube on August 01, 2015, 11:00:03 PM
Another beauty shot from Obuoy9 yesterday. Not even nat geo can do very much better than this.
Title: Re: Arctic Image of the Day
Post by: Andreas T on August 02, 2015, 01:26:30 PM
([url]http://i.imgur.com/XnU8IFF.png[/url])

Santa had a visitor.

Verg  ;)

which seems to have done some tidying: the instruments which had fallen over by the meltchannel at the left edge of the image are gone.
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on August 09, 2015, 05:45:13 AM
I bet there's been some talk of this feature of this years melt period, but I haven't been following this as closely as on previous years. The image is contrast and color enhanced image of the top of the Greenland showing what could be a current-driven area of melt. Is the East Greenland Current surfacing already here, is it due continelntal shelf, or what's going on here?

The other one is showing the approximate area on the Bremen Concentration Map for the same day 20150808
Title: Re: Arctic Image of the Day
Post by: seaicesailor on August 11, 2015, 08:23:53 PM
MODIS catched a mini cyclone and a sleeping bear nearby, somewhere in the ESS
Title: Re: Arctic Image of the Day
Post by: helorime on August 13, 2015, 03:33:27 PM
Another lovely pic from #9
Title: Re: Arctic Image of the Day
Post by: solartim27 on August 18, 2015, 05:48:45 AM
Any guesses for where this is?
Title: Re: Arctic Image of the Day
Post by: trebuh on August 18, 2015, 09:19:57 AM
 
Any guesses for where this is?
https://earthdata.nasa.gov/labs/worldview/?p=antarctic&l=MODIS_Aqua_CorrectedReflectance_TrueColor(hidden),MODIS_Terra_CorrectedReflectance_TrueColor,Coastlines&t=2015-08-17&v=-2800868.2496547773,-768314.2212555143,-1817828.2496547773,-285498.2212555143
Title: Re: Arctic Image of the Day
Post by: Laurent on August 18, 2015, 11:08:51 AM
Not fair ! it is the Antarctic image of the day...it is supposed to be winter time over there...
Title: Re: Arctic Image of the Day
Post by: Seumas on August 18, 2015, 03:42:32 PM
The ice off the north-east coast of Greenland is giving up (click to animate):

Title: Re: Arctic Image of the Day
Post by: solartim27 on August 18, 2015, 05:05:27 PM
Not fair ! it is the Antarctic image of the day...it is supposed to be winter time over there...
I know it wasn't fair, I was just excited to see the sun returning south, we'll be able to see the PIG calving area soon, and not have to rely on the occasional Sentinel.  If only the clouds cooperate.

From what I could see flipping through the years, it seems routine for the sea ice to be so broken and churned up.  They must get a lot of wave / swell action from the huge storms.
Title: Re: Arctic Image of the Day
Post by: lanevn on August 19, 2015, 11:01:14 AM
Polar bear doesn't look too upset )
Title: Re: Arctic Image of the Day
Post by: Gonzo on August 19, 2015, 04:49:04 PM
I wonder if they'll just turn into big Kodiak bears over time.
Title: Re: Arctic Image of the Day
Post by: budmantis on August 19, 2015, 09:59:23 PM
I wonder if they'll just turn into big Kodiak bears over time.

Maybe they'll just become Kodak bears, seeing how photogenic they are!
Title: Re: Arctic Image of the Day
Post by: pikaia on August 23, 2015, 09:52:50 AM
Well, hello there!

(http://images.nationalgeographic.com/wpf/media-live/photos/000/915/cache/polar-bears-waving-alaska_91574_990x742.jpg)
Title: Re: Arctic Image of the Day
Post by: Neven on August 23, 2015, 02:38:42 PM
They look so cute and friendly, but they're a cross between a tiger and a pitbull. I'm always amazed at how fast they are.
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on August 23, 2015, 03:43:50 PM
They will  actually interbreed.

https://en.wikipedia.org/wiki/Grizzly%E2%80%93polar_bear_hybrid
Title: Re: Arctic Image of the Day
Post by: TerryM on August 23, 2015, 03:57:38 PM
I'm sickened whenever I see a photo of a sleek (starving) polar bear.
Terry
Title: Re: Arctic Image of the Day
Post by: Nick_Naylor on August 23, 2015, 04:01:06 PM
Well, hello there!

([url]http://images.nationalgeographic.com/wpf/media-live/photos/000/915/cache/polar-bears-waving-alaska_91574_990x742.jpg[/url])


Great photo. I wonder how they get tigers and pit bulls to get together . . .  ??? I'd like to see a family photo :)
Title: Re: Arctic Image of the Day
Post by: Sonia on August 23, 2015, 08:56:45 PM
I thought "American Gothic" when I saw the photo.  I imagined a pitchfork, no wait, a trident, in the bear's paw.
Title: Re: Arctic Image of the Day
Post by: seaicesailor on August 29, 2015, 12:05:46 AM
The "eye" of the Chukchi "hurricane" today

(http://lance-modis.eosdis.nasa.gov/imagery/subsets/?subset=Arctic_r05c03.2015239.terra.1km.jpg)

I wonder if it would qualify as what is known as Arctic hurricane
https://en.wikipedia.org/wiki/Polar_low (https://en.wikipedia.org/wiki/Polar_low)


Today the term is usually reserved for the more vigorous systems that have near-surface winds of at least 17 m/s (38 mph)

So it had
Title: Re: Arctic Image of the Day
Post by: wili on August 29, 2015, 02:32:06 AM
Yeah, that's 60k/hr and nullschool shows speeds around the level in some places (71.22 N, 170.42 W = 60 k/h). http://earth.nullschool.net/#current/wind/surface/level/orthographic=-122.90,69.47,289 (http://earth.nullschool.net/#current/wind/surface/level/orthographic=-122.90,69.47,289)

Not absolutely accurate, but there are probably winds in that ballpark up there.
Title: Re: Arctic Image of the Day
Post by: Espen on August 29, 2015, 09:52:56 PM
Polar Bears are not what they used to be:

https://www.youtube.com/watch?v=JE-Nyt4Bmi8 (https://www.youtube.com/watch?v=JE-Nyt4Bmi8)
Title: Re: Arctic Image of the Day
Post by: P-maker on August 29, 2015, 10:42:22 PM
Espen,

that is for sure the most weird behaviour seen for a long time. It is as if the bears are cuddling the poor dogs. They may have lost their own cobs and now turn to the chained-up dogs to seek comfort in their sorrows.
Title: Re: Arctic Image of the Day
Post by: TerryM on August 29, 2015, 11:57:54 PM
Espen
Thanks so much, I've never seen anything like that in my life.
The Lions may not (yet) be lying with the lambs, but the bears are certainly cuddling with the dogs!


Can't help but feel a great sadness for beasts acting so far from their own norm.
Terry
Title: Re: Arctic Image of the Day
Post by: AmbiValent on August 30, 2015, 12:18:49 AM
I think I saw playful behavior between species documented in the wild as well - as long as they weren't hunter and prey or direct rivals for the same food.
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on August 30, 2015, 01:11:48 PM
Polar Bears are not what they used to be:


Thanks for that most interesting link Espen, which eventually took me to a more recent Polar bear video. If you edit out the 's' at the end of https in the link YouTube provides the video will embed itself. A bit like this:

! No longer available (http://www.youtube.com/watch?v=5ITc3Uclb40#)
Title: Re: Arctic Image of the Day
Post by: Magma. on August 30, 2015, 05:14:09 PM
Polar Bears are not what they used to be:

https://www.youtube.com/watch?v=JE-Nyt4Bmi8 (https://www.youtube.com/watch?v=JE-Nyt4Bmi8)

The key observation to make here is that the bears in the video are in excellent condition. Grizzly bears in coastal Alaska and British Columbia can also be extremely tolerant of other bears and human observers when they are well-fed on abundant salmon. Aggressive predatory behavior increases drastically with hunger and reduced resources.
Title: Re: Arctic Image of the Day
Post by: Gonzo on August 31, 2015, 07:37:10 PM
Polar Bears are not what they used to be:

https://www.youtube.com/watch?v=JE-Nyt4Bmi8 (https://www.youtube.com/watch?v=JE-Nyt4Bmi8)

The key observation to make here is that the bears in the video are in excellent condition. Grizzly bears in coastal Alaska and British Columbia can also be extremely tolerant of other bears and human observers when they are well-fed on abundant salmon. Aggressive predatory behavior increases drastically with hunger and reduced resources.
What do you mean?
Title: Re: Arctic Image of the Day
Post by: AySz88 on August 31, 2015, 08:24:37 PM
Polar Bears are not what they used to be:

https://www.youtube.com/watch?v=JE-Nyt4Bmi8 (https://www.youtube.com/watch?v=JE-Nyt4Bmi8)

The key observation to make here is that the bears in the video are in excellent condition. Grizzly bears in coastal Alaska and British Columbia can also be extremely tolerant of other bears and human observers when they are well-fed on abundant salmon. Aggressive predatory behavior increases drastically with hunger and reduced resources.
What do you mean?

I think Magma is saying that the bears are often nice so long as they're not hungry, so it's hard to say from (just) this video that they're in trouble.
Title: Re: Arctic Image of the Day
Post by: realitybytes on September 02, 2015, 01:53:11 PM
since the picture is more than 8 years old, still not sure what it means... and it might be older than that. I remember reading the original article back then, it was about the psychology of how animals recognize a "play attitude"

[just to be clear, I was referring to the earlier post, not the most recent one... my laptop hadn't loaded the recent one, apparently it's a bit slow...]
Title: Re: Arctic Image of the Day
Post by: greatdying2 on September 03, 2015, 06:02:38 PM
Greenland Sea Ice (http://www.nasa.gov/image-feature/sea-ice-in-the-greenland-sea)

(http://www.nasa.gov/sites/default/files/styles/full_width_feature/public/thumbnails/image/image08172015_250m.jpg?itok=trndS4FN)
Title: Re: Arctic Image of the Day
Post by: TerryM on September 03, 2015, 08:27:03 PM
Another picture from 8 years ago?
Terry
Title: Re: Arctic Image of the Day
Post by: greatdying2 on September 03, 2015, 11:36:08 PM
Negative, it's from Aug 24. (Click the text -- it's a link.)
Title: Re: Arctic Image of the Day
Post by: TerryM on September 04, 2015, 05:51:22 AM
Negative, it's from Aug 24. (Click the text -- it's a link.)


I recognise that the article is dated the 24th, but I don't recall seeing that much bare rock in NW Greenland this year. It's no biggy, but I check Flade Isblink on a daily basis & that picture, with the expanse of bare rock while Independence Fjord is frozen was unusual, to say the least.


Terry
Title: Re: Arctic Image of the Day
Post by: greatdying2 on September 04, 2015, 08:29:49 AM
Ok, reading the blurb, it's not from Aug. 24th. It's from July 16th, 2015. Or so it says...

As the northern hemisphere experiences the heat of summer, ice moves and melts in the Arctic waters and the far northern lands surrounding it. The Moderate Resolution Imaging Spectroradiometer (MODIS) aboard NASA’s Aqua satellite captured this true-color image of sea ice off Greenland on July 16, 2015.

Large chunks of melting sea ice can be seen in the sea ice off the coast, and to the south spirals of ice have been shaped by the winds and currents that move across the Greenland Sea. Along the Greenland coast, cold, fresh melt water from the glaciers flows out to the sea, as do newly calved icebergs. Frigid air from interior Greenland pushes the ice away from the shoreline, and the mixing of cold water and air allows some sea ice to be sustained even at the height of summer.

According to observations from satellites, 2015 is on track to be another low year for arctic summer sea ice cover. The past ten years have included nine of the lowest ice extents on record. The annual minimum typically occurs in late August or early September. The amount of Arctic sea ice cover has been dropping as global temperatures rise. The Arctic is two to three times more sensitive to temperature changes as the Earth as a whole.

Image Credit: NASA/Jeff Schmaltz, MODIS Land Rapid Response Team, NASA GSFC

http://www.nasa.gov/image-feature/sea-ice-in-the-greenland-sea (http://www.nasa.gov/image-feature/sea-ice-in-the-greenland-sea)

I double-checked using Aqua on Worldview, and it seems to check out (att).
Title: Re: Arctic Image of the Day
Post by: oren on September 04, 2015, 08:52:10 AM
If you zoom in to the quickly receding calving front at Zachariae Isstrom you can verify that the image is from this year...

Compare to this image:
http://forum.arctic-sea-ice.net/index.php/topic,400.msg55043.html#msg55043 (http://forum.arctic-sea-ice.net/index.php/topic,400.msg55043.html#msg55043)
Title: Re: Arctic Image of the Day
Post by: pikaia on September 04, 2015, 10:25:23 AM
(http://images.nationalgeographic.com/wpf/media-live/photos/000/916/cache/aerial-iceland-colors_91650_990x742.jpg)
Volcanic lakes near Mýrsalsjökull Glacier, Iceland.

http://photography.nationalgeographic.com/photography/photo-of-the-day/aerial-iceland-colors/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+ng%2Fphotography%2Fphoto-of-the-day+%28National+Geographic+Photo+of+the+Day%29 (http://photography.nationalgeographic.com/photography/photo-of-the-day/aerial-iceland-colors/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+ng%2Fphotography%2Fphoto-of-the-day+%28National+Geographic+Photo+of+the+Day%29)
Title: Re: Arctic Image of the Day
Post by: TerryM on September 04, 2015, 03:14:36 PM
Thanks all
My bad
Terry
Title: Re: Arctic Image of the Day
Post by: Espen on September 08, 2015, 10:24:21 PM
One strange thing about this season is the remaining sea ice in Cumberland Sound / Baffin Island, relatively south at +66?
Title: Re: Arctic Image of the Day
Post by: nukefix on September 14, 2015, 12:15:52 PM
Sentinel-1 multitemporal image of the Jakonbshaven Isfjord in Greenland:

R=19.8.2015
G=31.8.2015
B=12.9.2015
Title: Re: Arctic Image of the Day
Post by: Espen on September 17, 2015, 10:09:40 PM
Climate what climate?
Title: Re: Arctic Image of the Day
Post by: anotheramethyst on September 18, 2015, 01:41:50 AM
oh my god that poor bear!!! :(
Title: Re: Arctic Image of the Day
Post by: slow wing on September 18, 2015, 02:01:27 AM
To be fair, you can't tell about climate from a single bear. There have always been sick and old polar bears.

(Yes, I'm very worried about human-caused climate change. There is plenty of evidence. It's just that this is not it.)
Title: Re: Arctic Image of the Day
Post by: pikaia on September 18, 2015, 11:12:20 AM
(https://i.guim.co.uk/img/media/72fa67c0c4c18674a36c14acd25ab4fc99ae9849/0_112_3456_2073/master/3456.jpg?w=1920&q=85&auto=format&sharp=10&s=bd2c5e385c17424f3e9844d0e8ebd6d4)

This photo of the recent solar eclipse over Svalbard won first prize in the Insight Astronomy Photographer of the Year competition for 2015

http://www.theguardian.com/science/across-the-universe/gallery/2015/sep/18/insight-astronomy-photographer-of-the-year-2015-winners-in-pictures (http://www.theguardian.com/science/across-the-universe/gallery/2015/sep/18/insight-astronomy-photographer-of-the-year-2015-winners-in-pictures)
Title: Re: Arctic Image of the Day
Post by: Espen on September 18, 2015, 07:56:35 PM
To be fair, you can't tell about climate from a single bear. There have always been sick and old polar bears.

(Yes, I'm very worried about human-caused climate change. There is plenty of evidence. It's just that this is not it.)


"One man's pain is another man's gain" Bluefin tuna"   caugth for the first time in Norway in 30 years not climate related:

Title: Re: Arctic Image of the Day
Post by: Espen on September 18, 2015, 08:43:18 PM
Just a coincidence. Sorry for for the inappropriate relation. 
Title: Re: Arctic Image of the Day
Post by: diablobanquisa on September 19, 2015, 11:35:10 PM
(http://images.meteociel.fr/im/6798/13_13_12_222_ABCam_20150919_211000_vvv2.jpg)

Title: Re: Arctic Image of the Day
Post by: pikaia on October 14, 2015, 01:58:42 PM
Red Fox with corpse of an Arctic Fox. This is the winner of the 2015 Wildlife Photographer of the Year competition.

(http://ichef.bbci.co.uk/news/976/cpsprodpb/A3A1/production/_86098814_2383c19c-782a-47b7-ab7e-7f0c3703a226.jpg)

My personal favourite is the three Red-footed Falcons.

http://www.bbc.co.uk/news/science-environment-34520185 (http://www.bbc.co.uk/news/science-environment-34520185)
Title: Re: Arctic Image of the Day
Post by: A-Team on October 14, 2015, 11:54:12 PM
This still is from the May 2014 high resolution video of a calving event at Jakobshavn. The whole 11 minute youTube is very much watching -- be sure to use full screen mode.

http://jasonbox.net/news/ (http://jasonbox.net/news/)
Title: Re: Arctic Image of the Day
Post by: Laurent on November 23, 2015, 06:37:50 PM
See the photos at the end of the Arcticle.
Weather Man Vyacheslav Korotki
http://www.newyorker.com/project/portfolio/weather-man?mbid=social_tumblr (http://www.newyorker.com/project/portfolio/weather-man?mbid=social_tumblr)
Title: Re: Arctic Image of the Day
Post by: Espen on December 06, 2015, 07:29:36 PM
Close encounter of the special kind:

A Lynx and a Wolverine in the same image. Northern Norway.

Photo: Stein Halvorsen
Title: Re: Arctic Image of the Day
Post by: A-Team on December 08, 2015, 02:15:38 PM
A Lynx and a Wolverine in the same image
Well, that is what you get setting out meat in winter bait traps. Here is what you get just providing habitat.
Title: Re: Arctic Image of the Day
Post by: pikaia on December 11, 2015, 09:31:15 AM
Gljúfrabúi Canyon, Iceland

(http://images.nationalgeographic.com/wpf/media-live/photos/000/932/cache/gljufrabui-waterfall-iceland_93264_990x742.jpg)
Title: Re: Arctic Image of the Day
Post by: pikaia on December 12, 2015, 12:59:49 PM
(http://images.nationalgeographic.com/wpf/media-live/photos/000/932/cache/greenland-ice-bridge_93265_990x742.jpg)
Title: Re: Arctic Image of the Day
Post by: Espen on January 01, 2016, 06:58:23 PM
New year greetings from Wannsee (Berlin Germany) picture taken close to the ferry port December 31 2015 (either 8 months late or +4 months early?):
Title: Re: Arctic Image of the Day
Post by: lanevn on January 17, 2016, 06:13:54 PM
https://www.youtube.com/watch?v=6pr80O5UdIE (https://www.youtube.com/watch?v=6pr80O5UdIE)

That's where sea ice gone
Title: Re: Arctic Image of the Day
Post by: pikaia on January 27, 2016, 11:42:57 AM
Two more Kodak bears.

(http://img.huffingtonpost.com/asset/scalefit_630_noupscale/569fdab32a00006e00030e93.jpeg?cache=lyrvjbb1re)

(http://img.huffingtonpost.com/asset/scalefit_630_noupscale/569fdaf31a00001001ab0f6f.jpeg)

http://www.huffingtonpost.com/entry/polar-bear-cub-clings-mom-butt_us_569fe8cde4b076aadcc4fe6c?cps=gravity_2246_-6915626495656214302 (http://www.huffingtonpost.com/entry/polar-bear-cub-clings-mom-butt_us_569fe8cde4b076aadcc4fe6c?cps=gravity_2246_-6915626495656214302)
Title: Re: Arctic Image of the Day
Post by: pikaia on February 10, 2016, 02:13:02 PM
Light pillars over Alaska.

(http://apod.nasa.gov/apod/image/1602/LightPillars_Libby_960.jpg)

http://apod.nasa.gov/apod/ap160208.html (http://apod.nasa.gov/apod/ap160208.html)
Title: Re: Arctic Image of the Day
Post by: Yuha on February 10, 2016, 04:03:28 PM
Light pillars can even draw a map in the sky:

http://www.slate.com/blogs/bad_astronomy/2016/01/16/optical_phenomenon_draws_a_map_of_a_city_in_the_sky.html (http://www.slate.com/blogs/bad_astronomy/2016/01/16/optical_phenomenon_draws_a_map_of_a_city_in_the_sky.html)

(http://www.slate.com/content/dam/slate/blogs/bad_astronomy/2016/01/15/heikkila_lightpillars_map.jpg.CROP.original-original.jpg)
Title: Arctic Video of the Day
Post by: Jim Hunt on February 22, 2016, 04:07:41 PM
Sentinel 3A dancing with the aurora borealis over Finland:

http://youtu.be/cQ6gT4v_nzg (http://youtu.be/cQ6gT4v_nzg)

Apparently "The Sentinel 3 Synthetic Aperture Radar Altimeter is better than the CryoSat altimeter"

P.S. The embedded video seems not to function. Here's the URL: https://youtu.be/cQ6gT4v_nzg (https://youtu.be/cQ6gT4v_nzg)
Title: Re: Arctic Image of the Day
Post by: Wipneus on March 01, 2016, 09:07:36 AM
Sharp boundary between fast ice and not-so-fast ice in the Laptev Sea in this MODIS-Aqua image.

(click to enlarge)
Title: Re: Arctic Image of the Day
Post by: jdallen on March 08, 2016, 08:59:12 AM
Care of Climate Reanalyzer - This I think is a remarkable image.  It's Arctic temperature anomalies predicted about 42 hours out.

Most of Atlantic side of the arctic, from 90E to 90W, all the way from the pole to Iceland is red.
Title: Re: Arctic Image of the Day
Post by: skanky on March 08, 2016, 05:33:11 PM
Antarctica, but still...
Sentinel 3 image. Click through for a description.

(https://farm2.staticflickr.com/1663/24988879283_211fcde2e5_z.jpg) (https://flic.kr/p/E5bxdg)

Ice cracked (https://flic.kr/p/E5bxdg) by European Space Agency (https://www.flickr.com/photos/europeanspaceagency/), on Flickr
Title: Re: Arctic Image of the Day
Post by: jdallen on March 08, 2016, 05:41:06 PM
Dayum.  2-4KM wide?  Probably close to 500M deep.

That's the best part of a 1000KM long, I'll wager.

[edit: reevaluation - probably not that deep, but still, very old, probably fairly thick ice breaking off the shelf]
Title: Re: Arctic Image of the Day
Post by: pikaia on March 16, 2016, 09:52:18 AM
Phoenix aurora over Iceland.

(https://scontent-lhr3-1.xx.fbcdn.net/hphotos-xap1/v/t1.0-9/12745920_2130278890444432_2595705179409032723_n.jpg?oh=eb2c758b5869b22b920125f98f090edb&oe=574BD95C)

http://apod.nasa.gov/apod/ap160316.html (http://apod.nasa.gov/apod/ap160316.html)
Title: Re: Arctic Image of the Day
Post by: sedziobs on March 16, 2016, 10:07:43 PM
An arch in Bering Strait on March 14.
(https://s3.yimg.com/bt/api/res/1.2/gZhsxduvjzS_Rx3g3gLo4g--/YXBwaWQ9eW5ld3NfbGVnbztxPTg1/http://media.zenfs.com/en-US/homerun/mic_26/c44fa9d6db0a3bac928b5ffee38d2bec)
From https://news.yahoo.com/2-000-square-miles-ice-152500577.html (https://news.yahoo.com/2-000-square-miles-ice-152500577.html)
Title: Re: Arctic Image of the Day
Post by: Ninebelowzero on March 26, 2016, 01:25:21 PM
Thin ice.


https://www.youtube.com/watch?v=oq9-haTYeUM (https://www.youtube.com/watch?v=oq9-haTYeUM)
Title: Re: Arctic Image of the Day
Post by: Icebird on March 29, 2016, 04:47:20 AM
http://map2.vis.earthdata.nasa.gov/image-download?TIME=2016088&extent=-3576832,1432064,-3127296,1768960&epsg=3413&layers=MODIS_Terra_CorrectedReflectance_TrueColor,Coastlines&opacities=1,1&worldfile=false&format=image/jpeg&width=1756&height=1316 (http://map2.vis.earthdata.nasa.gov/image-download?TIME=2016088&extent=-3576832,1432064,-3127296,1768960&epsg=3413&layers=MODIS_Terra_CorrectedReflectance_TrueColor,Coastlines&opacities=1,1&worldfile=false&format=image/jpeg&width=1756&height=1316)
Title: Re: Arctic Image of the Day
Post by: pikaia on April 04, 2016, 10:00:52 AM
(http://apod.nasa.gov/apod/image/1604/AuroraFalls_Kristjansson_1920.jpg)

http://apod.nasa.gov/apod/ap160404.html (http://apod.nasa.gov/apod/ap160404.html)
Title: Re: Arctic Image of the Day
Post by: jdallen on April 07, 2016, 04:53:15 PM
Beaufort captured on Worldview, using brightness temperature band 31-night, with the palette compressed to -50 to 0C.  Darker is colder.

Note the streams of higher temperature being swept clockwise to the west carried along by the flow around the high pressure currently over the arctic.
Title: Re: Arctic Image of the Day
Post by: pikaia on April 08, 2016, 04:24:30 PM
(http://apod.nasa.gov/apod/image/1604/aurorakaunispaa280316_casado600h.jpg)

http://apod.nasa.gov/apod/ap160408.html (http://apod.nasa.gov/apod/ap160408.html)
Title: Re: Arctic Image of the Day
Post by: Laurent on April 11, 2016, 03:09:12 PM
Photo : Daniel Beltra
http://proof.nationalgeographic.com/2016/04/08/see-dramatic-views-of-climate-change-from-above/?utm_content=buffer263f3&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer (http://proof.nationalgeographic.com/2016/04/08/see-dramatic-views-of-climate-change-from-above/?utm_content=buffer263f3&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer)
Meltwater pools in a low area of the Greenland ice sheet, southeast of Ilulissat. August 2014.
Title: Re: Arctic Image of the Day
Post by: A-Team on April 16, 2016, 02:45:02 PM
The animation below shows the details that are actually available from Lance-Modis for day 106 of this year at their top resolution true color (after some processing). The second frame flashes in cloud cover taken from bands 367. Click to see at full size
Title: Re: Arctic Image of the Day
Post by: Espen on April 17, 2016, 08:19:16 PM
The northern most piece of real land Kaffeklubben Ø at 83,39+ is clearly seen these days even in Modis Resolution:

http://www.arcticthule.com/about/kaffeklubben (http://www.arcticthule.com/about/kaffeklubben)
Title: Re: Arctic Image of the Day
Post by: lanevn on April 18, 2016, 01:45:45 PM
Ice don't want swim to arctic this year.
(https://pp.vk.me/c631824/v631824134/299ba/g6RA2cKcUYs.jpg)
Title: Re: Arctic Image of the Day
Post by: Siffy on April 18, 2016, 11:10:13 PM
Ice don't want swim to arctic this year.
(https://pp.vk.me/c631824/v631824134/299ba/g6RA2cKcUYs.jpg)

Where is this?
Title: Re: Arctic Image of the Day
Post by: jdallen on April 19, 2016, 01:22:03 AM
Ice don't want swim to arctic this year.
(https://pp.vk.me/c631824/v631824134/299ba/g6RA2cKcUYs.jpg)

Where is this?
Pretty sure it's Kostroma near where the river of the same name runs into the Volga.
Title: Re: Arctic Image of the Day
Post by: lanevn on April 19, 2016, 10:46:25 AM
It is Veliky Ustyug. 60°45'21.7"N 46°19'31.7"E Yesterday it were even airstrikes on ice hummocks

Pretty sure it's Kostroma near where the river of the same name runs into the Volga.

Ice hummocks is a problem of rivers, that flow north, Volga is flow south.
Title: Re: Arctic Image of the Day
Post by: vigilius on April 21, 2016, 11:43:42 AM
I posted this on the Barneo thread just now but then it occurred to me that it might really belong here.
http://www.11alive.com/sports/arkansas-man-wins-north-pole-marathon/144871437 (http://www.11alive.com/sports/arkansas-man-wins-north-pole-marathon/144871437)
Title: Re: Arctic Image of the Day
Post by: charles_oil on April 21, 2016, 11:59:53 AM
Full details: http://www.npmarathon.com/ (http://www.npmarathon.com/)
Title: Re: Arctic Image of the Day
Post by: RoxTheGeologist on April 28, 2016, 09:01:44 PM


http://www.bbc.com/news/science-environment-36162115 (http://www.bbc.com/news/science-environment-36162115)

I thought it was worth posting as it looks like there will be more images to come :)
Title: Re: Arctic Image of the Day
Post by: Ninebelowzero on May 13, 2016, 11:00:25 AM
Yesterdays image.

(http://map2.vis.earthdata.nasa.gov/image-download?TIME=2016133&extent=-2381.4012508485466,-843374.9707497398,892082.5987491515,-427630.9707497398&epsg=3413&layers=MODIS_Terra_CorrectedReflectance_TrueColor,Coastlines&opacities=1,1&worldfile=false&format=image/jpeg&width=3494&height=1624)


Title: Re: Arctic Image of the Day
Post by: werther on May 13, 2016, 11:44:42 AM
While going over yesterday’s MODIS tiles, this picture struck me as unusual:

(http://i1036.photobucket.com/albums/a446/hanver1/October%20Revolution%20Island_zpswd8g6c5e.jpg)

It is a detail of a large icecap on October Revolution Island, Severnaya Zemlya.
It looks much like a ‘Jokullhlaup’.
Title: Re: Arctic Image of the Day
Post by: Carex on May 13, 2016, 01:33:47 PM

It looks much like a ‘Jokullhlaup’.


Now there is a term that could use some more background.  What is the etymology (translated).  How frequently do these sub-glacial water flows occur?  Are they common, uncommon, rare!  Are they known with particular conditions or causes?  It is definitely a noteworthy sight!
Title: Re: Arctic Image of the Day
Post by: Peter Ellis on May 13, 2016, 01:46:26 PM
You wouldn't see a jokullhlaup from the air.  Reason being, it's under the glacier and you're above it. Pretty sure that what you'd expect to see would be the area in front of the calving front being swept clear by the flowing water - not what you see here.

What you see here is that the glacier surface looks a bit darker than the surrounding ice cap and sea ice.  Far from uncommon, you can see the same thing on many of the Greenland glaciers (and indeed on this one in previous years).  Not sure why, could be the snow melts back earlier, could be the surface is rougher, could be something to do with the elevation and the angle of the satellite.
Title: Re: Arctic Image of the Day
Post by: Yuha on May 13, 2016, 02:46:59 PM
While going over yesterday’s MODIS tiles, this picture struck me as unusual:

It is a detail of a large icecap on October Revolution Island, Severnaya Zemlya.
It looks much like a ‘Jokullhlaup’.


That's a surging glacier on the Vavilov Ice Cap.
Chris Hormann has been following the surge on his blog:

http://blog.imagico.de/ice-retreat-and-advance-on-severnaya-zemlya/  (http://blog.imagico.de/ice-retreat-and-advance-on-severnaya-zemlya/)
http://blog.imagico.de/ice-and-wind-on-severnaya-zemlya/  (http://blog.imagico.de/ice-and-wind-on-severnaya-zemlya/)
http://blog.imagico.de/early-spring-in-severnaya-zemlya/  (http://blog.imagico.de/early-spring-in-severnaya-zemlya/)

(http://blog.imagico.de/wp-content/uploads/2016/04/wsz2_1.small_.png)
Title: Re: Arctic Image of the Day
Post by: binntho on May 13, 2016, 03:16:01 PM

It looks much like a ‘Jokullhlaup’.


Now there is a term that could use some more background.  What is the etymology (translated).  How frequently do these sub-glacial water flows occur?  Are they common, uncommon, rare!  Are they known with particular conditions or causes?  It is definitely a noteworthy sight!

"Jökulhlaup" is from Icelandic, combination of "jökull" (glacier) and "hlaup" (run) - direct translation is glacier-run. They are fairly common in Iceland, where all the larger icecaps are sitting on active volcanoes. Geothermal activity causes regular (every few years) flows in some areas that are comparatively harmless, while eruptions can cause very destructive flows. These flows do not cause any significant changes on the surface of the glacier.
Title: Re: Arctic Image of the Day
Post by: Wipneus on May 14, 2016, 07:23:27 PM
Here is a cloud free Sentinel 2A image, scaled to 40 m/pix, of the end of the MacKenzie delta. River water seems to be streaming over the ice.

Note: this is a false color image with blue, red and near-IR specral bands. Similar to MODIS 7-2-1 composites.
Title: Re: Arctic Image of the Day
Post by: JayW on June 01, 2016, 12:22:46 PM
Image from the Suomi-NPP satellite carrying the VIIRS instrument.

Courtesy of the University of Alaska

http://feeder.gina.alaska.edu/search?utf8=%E2%9C%93&search%5Bsensors%5D%5B3%5D=1&search%5Bfeeds%5D%5B16%5D=1&search%5Bfeeds%5D%5B1%5D=1&search%5Bfeeds%5D%5B15%5D=1&search%5Bfeeds%5D%5B17%5D=1&search%5Bfeeds%5D%5B3%5D=1&search%5Bfeeds%5D%5B18%5D=1&search%5Bfeeds%5D%5B10%5D=1&search%5Bfeeds%5D%5B11%5D=1&search%5Bfeeds%5D%5B9%5D=1&search%5Bfeeds%5D%5B8%5D=1&search%5Bfeeds%5D%5B12%5D=1&search%5Bfeeds%5D%5B13%5D=1&search%5Bfeeds%5D%5B14%5D=1&search%5Bfeeds%5D%5B6%5D=1&search%5Bfeeds%5D%5B5%5D=1&search%5Bstart%5D=&search%5Bend%5D=&commit=Search (http://feeder.gina.alaska.edu/search?utf8=%E2%9C%93&search%5Bsensors%5D%5B3%5D=1&search%5Bfeeds%5D%5B16%5D=1&search%5Bfeeds%5D%5B1%5D=1&search%5Bfeeds%5D%5B15%5D=1&search%5Bfeeds%5D%5B17%5D=1&search%5Bfeeds%5D%5B3%5D=1&search%5Bfeeds%5D%5B18%5D=1&search%5Bfeeds%5D%5B10%5D=1&search%5Bfeeds%5D%5B11%5D=1&search%5Bfeeds%5D%5B9%5D=1&search%5Bfeeds%5D%5B8%5D=1&search%5Bfeeds%5D%5B12%5D=1&search%5Bfeeds%5D%5B13%5D=1&search%5Bfeeds%5D%5B14%5D=1&search%5Bfeeds%5D%5B6%5D=1&search%5Bfeeds%5D%5B5%5D=1&search%5Bstart%5D=&search%5Bend%5D=&commit=Search)
Wrangel island looks like it's looking at us.

Title: Re: Arctic Image of the Day
Post by: DrTskoul on June 01, 2016, 01:46:29 PM
The ice is looking back with sadness
Title: Re: Arctic Image of the Day
Post by: abbottisgone on June 02, 2016, 07:54:21 AM
The ice is looking back with sadness
Personally: I really dig that eyebrow.....  ;)
Title: Re: Arctic Image of the Day
Post by: abbottisgone on June 02, 2016, 07:57:42 AM
Is that mascara running from the other eye down the coast? Let nobody ask Mara out on a date I say!
Title: Re: Arctic Image of the Day
Post by: Flocke on June 02, 2016, 10:43:21 AM
Image from the Suomi-NPP satellite carrying the VIIRS instrument.

Wow, I got almost the same image from the EAVIIRS instrument  (Enhanced Audio-Visible Infrared Imaging Radiometer Suite). Sea ice is returning.
Title: Re: Arctic Image of the Day
Post by: JayW on June 02, 2016, 10:59:27 AM
Image from the Suomi-NPP satellite carrying the VIIRS instrument.


Wow, I got almost the same image from the EAVIIRS instrument  (Enhanced Audio-Visible Infrared Imaging Radiometer Suite). Sea ice is returning.


I believe they are from the same satellite.  :) mind sharing a link to your resource?

I'll have to disagree on the sea ice returning.  Looks the the Chukchi is getting massacred.  Perhaps the winds swing around and stop the progression, have to watch and see I guess.

2 day loop of the Chukchi
http://rammb.cira.colostate.edu/ramsdis/online/loop.asp?data_folder=npp_viirs_arctic/alaska_chukchi_sea_true_color_viirs&width=467&height=800 (http://rammb.cira.colostate.edu/ramsdis/online/loop.asp?data_folder=npp_viirs_arctic/alaska_chukchi_sea_true_color_viirs&width=467&height=800)

Title: Re: Arctic Image of the Day
Post by: Dundee on June 03, 2016, 06:19:48 PM
This is stretching a point, but after you've spend too much time visualizing the numbers, they start to grow on you . . .
Title: Re: Arctic Image of the Day
Post by: jdallen on June 05, 2016, 07:09:09 AM
What a perfect "little" cyclone off the end of Nova Zemlya...

Title: Re: Arctic Image of the Day
Post by: Watching_from_Canberra on June 06, 2016, 02:51:07 PM
The East Siberian Sea looks spectacular today...
Title: Re: Arctic Image of the Day
Post by: Glenn Tamblyn on June 07, 2016, 05:34:49 AM
Not an image so much as an animation.

The decline of old ice in the Arctic.

http://www.youtube.com/watch?feature=player_embedded&v=aUg6FzoUvVg# (http://www.youtube.com/watch?feature=player_embedded&v=aUg6FzoUvVg#)

Anyone know how to get this link to work as an embedded image?

Thanks Jim.

Answer, not an image but a link.

Can't find the original FB video at NOAA. The one above is end of March.

The FB video is weekly.

! No longer available (http://www.youtube.com/watch?feature=player_embedded&v=-lachmN5YO4#)
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on June 07, 2016, 11:37:24 AM
Anyone know how to get this link to work as an embedded image?


Here's my short term version of much the same thing:

http://youtu.be/E-6uPrJJl6Y (http://youtu.be/E-6uPrJJl6Y)

Just remove the 's' from "https" in the link YouTube provides. Is there a YouTube edition of the one you referenced?
Title: Re: Arctic Image of the Day
Post by: Lawrence Martin on June 07, 2016, 09:30:50 PM
From the northwest passage

Images are one day apart

 June 5

(https://i.imgur.com/p7ys6GKl.png)

June 6

(https://imgur.com/DAobQ9c.png)

edited HTML tags
Title: Re: Arctic Image of the Day
Post by: philiponfire on June 09, 2016, 07:42:26 AM
lovely clear image of the fast ice in the ESS breaking up.
Title: Re: Arctic Image of the Day
Post by: jdallen on June 09, 2016, 07:47:02 AM
Posted a larger image inclusive of this on the melt season thread.  Lovely is a matter of context, but I get your meaning.  The old region - from Laptev to Chukchi - is in a serious world of hurt.
Title: Re: Arctic Image of the Day
Post by: philiponfire on June 11, 2016, 03:52:34 AM
the ice bridge in Prince Regent inlet has broken up
Title: Re: Arctic Image of the Day
Post by: philiponfire on June 12, 2016, 07:08:54 AM
Blue ice in Amundsen gulf beginning to break up!
Title: Re: Arctic Image of the Day
Post by: JayW on June 13, 2016, 03:36:39 AM
 12 Hr loop of the north Akaka coast using VIIRS imagery.  Lots of swirls.

http://feeder.gina.alaska.edu/search?utf8= (http://feeder.gina.alaska.edu/search?utf8=)✓&search%5Bsensors%5D%5B3%5D=1&search%5Bfeeds%5D%5B16%5D=1&search%5Bfeeds%5D%5B1%5D=1&search%5Bfeeds%5D%5B15%5D=1&search%5Bfeeds%5D%5B17%5D=1&search%5Bfeeds%5D%5B3%5D=1&search%5Bfeeds%5D%5B18%5D=1&search%5Bfeeds%5D%5B10%5D=1&search%5Bfeeds%5D%5B11%5D=1&search%5Bfeeds%5D%5B9%5D=1&search%5Bfeeds%5D%5B8%5D=1&search%5Bfeeds%5D%5B12%5D=1&search%5Bfeeds%5D%5B13%5D=1&search%5Bfeeds%5D%5B14%5D=1&search%5Bfeeds%5D%5B6%5D=1&search%5Bfeeds%5D%5B5%5D=1&search%5Bstart%5D=&search%5Bend%5D=&commit=Search
Title: Re: Arctic Image of the Day
Post by: philiponfire on June 13, 2016, 11:16:05 AM
Blue ice well and truly broken up right in the middle of the ESS fast ice.
I seriously doubt the statement that the fast ice in this area is thick this year. There is no reason for it to be exceptionally thick. It is first year ice made during a winter when temperatures in general have been higher than normal.
Title: Re: Arctic Image of the Day
Post by: magnamentis on June 13, 2016, 01:45:00 PM
Blue ice well and truly broken up right in the middle of the ESS fast ice.
I seriously doubt the statement that the fast ice in this area is thick this year. There is no reason for it to be exceptionally thick. It is first year ice made during a winter when temperatures in general have been higher than normal.

thanks, i think the ice thickness and therefore volume calculations need an overhaul. i posted quite a few time my doubts as to their accuracy, i think that they rely to much on the past more than on really actual measurement and calculations and the ESS part was probably an assumption based on the wind drift out from beaufort. we shall see but we should observe the real results to the predicted and reported ice thickness very carefully,

another indicator that something is not quite right and what initially raised my suspicion, is that different volume and thickness images show totally contradictory results, at times almost 100% the contrary.
Title: Re: Arctic Image of the Day
Post by: jplotinus on June 13, 2016, 04:01:00 PM
Ice breaking kayaks(?) and contrails(?) at kimmirut 😮
Title: Re: Arctic Image of the Day
Post by: Tealight on June 15, 2016, 10:27:13 PM
I found several brownish lines on the blue ice between Victoria Island and the mainland. A few of them  connect directly to Cambridge Bay (a settlement).  Do they still drive on the ice in June or does the dirt remains until the ice fully melts?
Title: Re: Arctic Image of the Day
Post by: Watching_from_Canberra on June 16, 2016, 08:55:38 AM
Is that a rainbow? Icebow?
Title: Re: Arctic Image of the Day
Post by: Sleepy on June 16, 2016, 09:40:44 AM
W_f_C, I believe the correct term is a fogbow, and in this case, arctic fogbow.
Title: Re: Arctic Image of the Day
Post by: icy voyeur on June 16, 2016, 11:26:23 PM
There's a nice animation awaiting some clever fool who wants to combine a few webcam shots from barrow from over the last 4 hours.
http://feeder.gina.alaska.edu/webcam-uaf-barrow-seaice-images/ (http://feeder.gina.alaska.edu/webcam-uaf-barrow-seaice-images/)
The ice off-shore is starting to open up nicely.
Title: Re: Arctic Image of the Day
Post by: oren on June 17, 2016, 12:04:11 AM
There's a nice animation awaiting some clever fool who wants to combine a few webcam shots from barrow from over the last 4 hours.
[url]http://feeder.gina.alaska.edu/webcam-uaf-barrow-seaice-images/[/url] ([url]http://feeder.gina.alaska.edu/webcam-uaf-barrow-seaice-images/[/url])
The ice off-shore is starting to open up nicely.


Why not use their existing animations?

http://feeder.gina.alaska.edu/feeds/webcam-uaf-barrow-seaice-images/movies/current-1_day_animation.mp4 (http://feeder.gina.alaska.edu/feeds/webcam-uaf-barrow-seaice-images/movies/current-1_day_animation.mp4)
Title: Re: Arctic Image of the Day
Post by: icy voyeur on June 17, 2016, 12:19:43 AM
Why not use their existing animations?

[url]http://feeder.gina.alaska.edu/feeds/webcam-uaf-barrow-seaice-images/movies/current-1_day_animation.mp4[/url] ([url]http://feeder.gina.alaska.edu/feeds/webcam-uaf-barrow-seaice-images/movies/current-1_day_animation.mp4[/url])

They're yesterday.
Title: Re: Arctic Image of the Day
Post by: Phil. on June 17, 2016, 03:06:17 PM
Why not use their existing animations?

[url]http://feeder.gina.alaska.edu/feeds/webcam-uaf-barrow-seaice-images/movies/current-1_day_animation.mp4[/url] ([url]http://feeder.gina.alaska.edu/feeds/webcam-uaf-barrow-seaice-images/movies/current-1_day_animation.mp4[/url])

They're yesterday.


Not any more!

http://feeder.gina.alaska.edu/dragonfly/movies/2016/6/16/7483/7483_radar-uaf-barrow-seaice-images_2016-6-16_1-day-animation.mp4 (http://feeder.gina.alaska.edu/dragonfly/movies/2016/6/16/7483/7483_radar-uaf-barrow-seaice-images_2016-6-16_1-day-animation.mp4)
Title: Re: Arctic Image of the Day
Post by: Steven on June 17, 2016, 05:53:32 PM
From the EGU cryosphere blog:

A curious experiment is taking place in Greenland. An experiment involving very large balloons and – of course – a lot of snow. Read on to discover why balloons are an environmentally friendly tool when constructing an ice core drill camp.

http://blogs.egu.eu/divisions/cr/2016/06/17/image-of-the-week-ballooning-on-the-ice/ (http://blogs.egu.eu/divisions/cr/2016/06/17/image-of-the-week-ballooning-on-the-ice/)


(http://blogs.egu.eu/divisions/cr/files/2016/06/eg16_12211-Copy-700x400.jpg)
Title: Re: Arctic Image of the Day
Post by: Sleepy on June 18, 2016, 06:38:49 AM
Sorry, couldn't help myself after seeing the first attached picture.
Title: Re: Arctic Image of the Day
Post by: Wipneus on June 18, 2016, 11:51:12 AM
Detail of the Kolyma River estuary  as seen on 2016/6/6 by Sentinel 2A in visible light.

Click for the full picture in 40m/pix resolution.
Title: Re: Arctic Image of the Day
Post by: philiponfire on June 20, 2016, 07:24:55 AM
Floes have been breaking off regularly in Kane basin for the last month and now we can see the beginning of the break up of Nares strait from the north end.
Sorry this ended up being not what I intended at all. There were supposed to be two pictures not one. the picture showing is south of the Petermann glacier not the north end of the strait.
Title: Re: Arctic Image of the Day
Post by: Watching_from_Canberra on June 21, 2016, 11:16:33 AM
 :o
http://www.abc.net.au/news/2016-06-21/acclaimed-italian-composer-plays-floating-in-arctic-ice/7529974 (http://www.abc.net.au/news/2016-06-21/acclaimed-italian-composer-plays-floating-in-arctic-ice/7529974)
Title: Re: Arctic Image of the Day
Post by: philiponfire on June 23, 2016, 02:07:30 AM
OK! this is the picture of the beginning of the break up in the north end of Nares strait.
Title: Re: Arctic Image of the Day
Post by: philiponfire on June 23, 2016, 02:10:54 AM
Ice on the (fast) move in Hudson bay. Images one day apart, 21st and 22nd June. EOSDIS 10km resolution.
Title: Re: Arctic Image of the Day
Post by: jplotinus on June 23, 2016, 02:32:27 PM
Zoom in Zoom out
Title: Re: Arctic Image of the Day
Post by: philiponfire on June 24, 2016, 07:55:25 AM
A smashing time in Nares strait
Title: Re: Arctic Image of the Day
Post by: Laurent on June 24, 2016, 11:18:13 AM
http://fokionzissiadis.com/ (http://fokionzissiadis.com/)
Title: Re: Arctic Image of the Day
Post by: Xyrus on June 26, 2016, 02:55:20 AM
Reminds me of mammatus clouds of an approaching mesocyclone. :)
Title: Re: Arctic Image of the Day
Post by: magnamentis on June 26, 2016, 11:47:56 PM
interesting optical illusion, looks like a huge incoming tsunami :-)

melting is still approximately 1 month ahead of other years.

would make a nice image for real life rorschach tests :-)
Title: Re: Arctic Image of the Day
Post by: DoomInTheUK on June 27, 2016, 05:38:16 PM
: magnamentis
...

would make a nice image for real life rorschach tests :-)

Or a nasty jigsaw!
Title: Re: Arctic Image of the Day
Post by: abbottisgone on June 28, 2016, 04:01:44 AM
: magnamentis
...

would make a nice image for real life rorschach tests :-)

Or a nasty jigsaw!
I felt bad once leaving a jigsaw for my parents to do: so I glued the finished product to a canvas... well: it's half finished...with missing pieces and a few random ones yet to be glued in a big gap!

I like it anyway!
Title: Re: Arctic Image of the Day
Post by: jplotinus on June 28, 2016, 03:03:52 PM
The webcam at Barrow has not updated since June 24 😮

(http://i1008.photobucket.com/albums/af205/jfibonacci/Mobile%20Uploads/image_3.png) (http://s1008.photobucket.com/user/jfibonacci/media/Mobile%20Uploads/image_3.png.html)

Longyearbyen working just fine 😌

(http://i1008.photobucket.com/albums/af205/jfibonacci/Mobile%20Uploads/image_4.jpeg) (http://s1008.photobucket.com/user/jfibonacci/media/Mobile%20Uploads/image_4.jpeg.html)
Title: Re: Arctic Image of the Day
Post by: magnamentis on June 30, 2016, 03:51:36 PM
first i though: where's that ice coming from a those temps ?

but it's not an ice floe, it's that cloud that is mirroring in the water that is flat like a mirror :-)
Title: Re: Arctic Image of the Day
Post by: philiponfire on July 06, 2016, 08:26:04 AM
The algae bloom north of Scandinavia.
Title: Re: Arctic Image of the Day
Post by: jdallen on July 06, 2016, 08:48:09 AM
The algae bloom north of Scandinavia.
I was just looking at that self-same thing on Worldview, wondering if I should toss it up. 

Thank you for doing so.
Title: Re: Arctic Image of the Day
Post by: abbottisgone on July 06, 2016, 09:00:48 AM
first i though: where's that ice coming from a those temps ?

but it's not an ice floe, it's that cloud that is mirroring in the water that is flat like a mirror :-)
Friggin 'eck... i never really liked photos much before until NOW!

 :o :o :o :o :o :o :o :o :o :o

** Chido Amiga  :D **
Title: Re: Arctic Image of the Day
Post by: Timothy Astin on July 06, 2016, 09:19:23 AM
The algae bloom north of Scandinavia.


Yes, its mostly a coccolithophore Emiliania huxleyi
e.g. http://www.soes.soton.ac.uk/staff/tt/eh/satbloompics.html (http://www.soes.soton.ac.uk/staff/tt/eh/satbloompics.html)
Title: Re: Arctic Image of the Day
Post by: philiponfire on July 07, 2016, 12:44:15 AM
Kane basin shattered, we must be days away from transport in Nares strait.
Title: Re: Arctic Image of the Day
Post by: philiponfire on July 09, 2016, 01:12:01 AM
Clear skies over Nares strait.
Title: Re: Arctic Image of the Day
Post by: philiponfire on July 13, 2016, 08:16:15 AM
Kane basin is on the move as is the ice bridge facing the Petermann fjord.
Title: Re: Arctic Image of the Day
Post by: silkman on July 14, 2016, 03:15:16 PM
Are the folk caught gathering on the beach by the Barrow webcam looking at a polar bear.... or is it just an ice floe.... or, looking closely, could it be two bears?
Title: Re: Arctic Image of the Day
Post by: magnamentis on July 14, 2016, 03:18:50 PM
Are the folk caught gathering on the beach by the Barrow webcam looking at a polar bear.... or is it just an ice floe.... or, looking closely, could it be two bears?

ice floe, you can download the image for better ( larger ) view
Title: Re: Arctic Image of the Day
Post by: mati on July 14, 2016, 07:29:00 PM
then there is the Estonian Polar Bear:

https://www.instagram.com/p/8DtB0vsZow/ (https://www.instagram.com/p/8DtB0vsZow/)
Title: Re: Arctic Image of the Day
Post by: Tor Bejnar on July 17, 2016, 12:01:10 AM
screen shot from Polar View (http://www.polarview.aq/images/105_S1jpgfull/S1A_EW_GRDM_1SDH_20160716T130941_468A_N_1.final.jpg).  I presume this is brash ice ("Accumulations of floating ice made up of fragments not more than 2 meters across, the wreckage of other forms of ice.") in the Atlantic sector. (1) Red line is 82oN. (2) Cross lines are 82oN and 40oE and shows ice cap edge.
Title: Re: Arctic Image of the Day
Post by: philiponfire on July 17, 2016, 01:52:36 AM
Transport!
Title: Re: Arctic Image of the Day
Post by: Kate on July 17, 2016, 04:54:37 AM
Lots of smoke and broken ice
Title: Re: Arctic Image of the Day
Post by: philiponfire on July 21, 2016, 10:27:42 AM
Ice in Petermann fjord broken up more or less all the way back to the calving line.
Title: Re: Arctic Image of the Day
Post by: jplotinus on July 22, 2016, 03:48:47 PM
Yamal Peninsula

(http://i1008.photobucket.com/albums/af205/jfibonacci/Mobile%20Uploads/image_3.gif) (http://s1008.photobucket.com/user/jfibonacci/media/Mobile%20Uploads/image_3.gif.html)


"Bubbles of gas have created wobbly waterbed-like patches of ground in the Yamal Peninsula after unseasonably high temperatures sparked bizarre underfoot conditions.
The fun-looking patches of bubbling land were discovered by researchers Alexander Sokolov and Dorothee Ehrich. Some 15 examples of the phenomena were discovered in the area, according to The Siberian Times.
When the patches were punctured, methane and carbon dioxide gases were released, according to the pair. The researchers theorize that unusually high temperatures in the area may have caused permafrost to thaw, releasing gases and forming the bubbles."

Source:

https://www.rt.com/viral/352688-siberia-earth-wobbling-methane/ (https://www.rt.com/viral/352688-siberia-earth-wobbling-methane/)

Title: Re: Arctic Image of the Day
Post by: philiponfire on July 23, 2016, 09:06:00 AM
the remains of "big block" still a decent sized chunk of ice and probably one of the largest distinct blocks in the arctic today.
Title: Re: Arctic Image of the Day
Post by: epiphyte on July 23, 2016, 09:23:44 PM
Svalbard North East Island in the sunshine...
Title: Re: Arctic Image of the Day
Post by: philiponfire on July 24, 2016, 12:48:41 AM
North Nares strait and Petermann fjord 2016 07 23
Title: Re: Arctic Image of the Day
Post by: notjonathon on July 24, 2016, 02:41:51 AM
Svalbard North East Island in the sunshine...

And surrounded by algal blooms?
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on July 24, 2016, 02:32:42 PM
Svalbard North East Island in the sunshine...

And surrounded by algal blooms?

And large amounts of silt from melt.
Title: Re: Arctic Image of the Day
Post by: Tealight on July 25, 2016, 09:47:41 PM
Weird ring pattern on some ice on an island east of Zachariae Isstrøm. Maybe some geologist or biologist can explain the growth pattern  ;)
Best visible after zooming in a little.
Title: Re: Arctic Image of the Day
Post by: binntho on July 26, 2016, 07:40:22 AM
Weird ring pattern on some ice on an island east of Zachariae Isstrøm. Maybe some geologist or biologist can explain the growth pattern  ;)
Best visible after zooming in a little.
Similar patterns are frequently seen in Icelandic glaciers, where the black lines are layers of volcanic ash being exposed as older ice melts away.

Perhaps the image shows layers of windborne ash and dust that deposits annually on top of each winters snowfall?

The glacier on the image seems to be disappearing fast, the only "fresh" ice being in a small area at the very top.
Title: Re: Arctic Image of the Day
Post by: Acts5v29 on July 27, 2016, 01:00:37 PM
Yamal Peninsula

"Bubbles of gas have created wobbly waterbed-like patches of ground in the Yamal Peninsula after unseasonably high temperatures sparked bizarre underfoot conditions.

Source:

https://www.rt.com/viral/352688-siberia-earth-wobbling-methane/ (https://www.rt.com/viral/352688-siberia-earth-wobbling-methane/)

That image and link should be posted to every denier.
Title: Re: Arctic Image of the Day
Post by: Kate on July 29, 2016, 10:40:57 AM
Someone will have to move the camera on the Helheim Glacier soon :(

It's been a conveyor belt all season
Title: Re: Arctic Image of the Day
Post by: Nick_Naylor on August 02, 2016, 12:53:09 PM
This reminds me of The Donald's hairpiece - the way it moves as a unit when the wind gets a hold of it:
(needs a click)
Title: Re: Arctic Image of the Day
Post by: Ninebelowzero on August 02, 2016, 06:54:26 PM
Anyone for a side bet on the date for the last bit of fast ice stuck on the Belgica shallows to start moving? :)
Title: Re: Arctic Image of the Day
Post by: seaicesailor on August 05, 2016, 12:19:19 AM
Nice pic today from Healy cam
Title: Re: Arctic Image of the Day
Post by: Niall Dollard on August 10, 2016, 12:27:22 PM
NSIDC sea ice extent on 08/08/16 has a "ghostly" look to it !

(http://i1018.photobucket.com/albums/af306/stratoq/ghost.jpg) (http://s1018.photobucket.com/user/stratoq/media/ghost.jpg.html)
Title: Re: Arctic Image of the Day
Post by: Wipneus on August 11, 2016, 07:09:41 PM
Hanna Shoal was visible this spring in some of my animations in the Home Brew thread causing open water by blocking the large ice floes that moved with the extended Beaufort Gyre. Now the floes have turned to rubble, but the grounded ice is still there, visible as a bright sport in the Chukchi Sea.

Must click to run the animation.
Title: Re: Arctic Image of the Day
Post by: Tor Bejnar on August 11, 2016, 07:35:48 PM
A paragraph from the PEW Charitable Trust's Obama Administration Protects Areas of the Arctic Ocean from Oil, Gas Development (http://www.pewtrusts.org/en/research-and-analysis/analysis/2015/01/27/obama-administration-protects-areas-of-the-arctic-ocean-from-oil-gas-development) article:
Hanna Shoal Area
Hanna Shoal, in waters about 100 miles northwest of the northernmost tip of Alaska, rises from the surrounding seafloor to about 65 feet below the surface. About 30 miles wide, the shoal traps and anchors winter sea ice. The shallow shelf diverts warm water flowing from the Bering Strait farther north, allowing sea ice floes to its south to endure longer into the summer. Polynyas, or persistent areas of open water, are found between Hanna Shoal and the coast of Alaska and are important for marine life in winter and spring. Walruses and bearded seals feed on the many seafloor animals on Hanna Shoal, and recent satellite-tracking data demonstrate the shoal’s importance for walrus foraging and resting, especially during summer. Other species that migrate through or are found on Hanna Shoal include ringed and ribbon seals, polar bears, and beluga and bowhead whales.
Title: Re: Arctic Image of the Day
Post by: Nick_Naylor on August 16, 2016, 12:27:13 PM
Hycom shows the Arctic is having a heart attack. (needs a click) Actually, the animation is out of sequence.
Title: Re: Arctic Image of the Day
Post by: solartim27 on August 19, 2016, 03:27:08 PM
Perfectly normal conditions for O-Buoy 14.  I'm sure all that white stuff blowing around is snow and not sea spray.
http://obuoy.datatransport.org/data/obuoy/var/plots/buoy14/camera/webcam.jpg (http://obuoy.datatransport.org/data/obuoy/var/plots/buoy14/camera/webcam.jpg)
Title: Re: Arctic Image of the Day
Post by: jdallen on August 21, 2016, 09:30:27 PM
Image from Sentinel dramatically illustrating what's happening under the clouds along the Atlantic front of the arctic, when ice reaches that warmer water.  Image from 21-August-2016.
Title: Re: Arctic Image of the Day
Post by: jplotinus on August 24, 2016, 02:48:46 PM
One wonders whether the crew of this Chinese flagged vessel gets shore-leave at Port of Barrow Ak? 😮

(http://i1008.photobucket.com/albums/af205/jfibonacci/Mobile%20Uploads/image_11.jpeg) (http://s1008.photobucket.com/user/jfibonacci/media/Mobile%20Uploads/image_11.jpeg.html)
Title: Re: Arctic Image of the Day
Post by: jdallen on August 26, 2016, 08:34:00 PM
captured for posterity, 1KM resolution, 8/26/2016, the "Atlantic Front"
Title: Re: Arctic Image of the Day
Post by: Kate on September 01, 2016, 01:55:41 AM
I like to watch the grass grow in Barrow. Not very green this year ( so far )
Title: Re: Arctic Image of the Day
Post by: budmantis on September 01, 2016, 02:02:50 AM
Looks like they wont be needing the lawn mower this year!
Title: Re: Arctic Image of the Day
Post by: oren on September 01, 2016, 02:05:28 AM
Posted by Cate in the NWP cruising thread.

(http://forum.arctic-sea-ice.net/index.php?action=dlattach;topic=1514.0;attach=35470;image)
Title: Re: Arctic Image of the Day
Post by: bigrage on September 02, 2016, 08:54:08 AM
Posted by Cate in the NWP cruising thread.

([url]http://forum.arctic-sea-ice.net/index.php?action=dlattach;topic=1514.0;attach=35470;image[/url])


Nice pic :P
Title: Re: Arctic Image of the Day
Post by: charles_oil on September 02, 2016, 09:25:47 AM
Looks like a good candidate for a caption competition..... "Looking for the next meal" perhaps.
Title: Re: Arctic Image of the Day
Post by: budmantis on September 02, 2016, 09:29:52 AM
Looks like a good candidate for a caption competition..... "Looking for the next meal" perhaps.

Plenty of tasty homo sapiens onboard the cruise ship!
Title: Re: Arctic Image of the Day
Post by: Adam Ash on September 02, 2016, 10:04:40 AM
Probably just as well the PBear cannot read the papers, else she would be underneath that thing jamming ice into the cooling inlets, stopping the mains and aux, letting the bilge pumps fuze and gratefully watching the whole great greenhouse gas emitting monstrosity and all it contains slip promptly beneath the waves never to return.

Cause and effect, all in the same pix.  Sad.  We're a bunch of cretins aren't we (present company accepted, of course!)?
Title: Re: Arctic Image of the Day
Post by: abbottisgone on September 02, 2016, 10:18:44 AM
"..they've even got lifeboats!"
Title: Re: Arctic Image of the Day
Post by: Rob Dekker on September 13, 2016, 07:04:10 AM
The Polar Ocean Challenge successfully completed their quest to sail the North East Passage and North West Passage in one season.  The North West Passage was completed in an astonishing 14 days due to the fact that it was almost totally ice free.  They encountered ice only twice in their 1800 mile NW Passage part of the voyage.  This highlights an extraordinary loss of sea ice in the Arctic in the 30 years that David Hempleman-Adams has been coming to the area. He said, ‘ whilst we are all delighted to have succeeded, it is extremely worrying to see this lack of ice so starkly ‘ The objective of the expedition was to raise awareness of the change in the fragile climate in the Arctic. They left Lancaster Sound at the end of the NW Passage at 19.18 UTC on 12th September and are headed for Greenland.


Here is one of the last images of ice, in Lancaster Sound, 11th Sept, that the Northabout encountered.

(http://polarocean.co.uk/wp-content/uploads/2013/05/DSC_1734-copy.jpg)

A piece of art, sculpted by the elements.
Title: Re: Arctic Image of the Day
Post by: woodstea on September 15, 2016, 05:25:52 PM
Almost full moon from O-Buoy 14 in the M'Clure Strait.
Title: Re: Arctic Image of the Day
Post by: jplotinus on September 18, 2016, 02:32:59 PM
September 18, 2016
Longyearbyen
Temp 10°
(http://i1008.photobucket.com/albums/af205/jfibonacci/Mobile%20Uploads/image_12.jpeg) (http://s1008.photobucket.com/user/jfibonacci/media/Mobile%20Uploads/image_12.jpeg.html)
Title: Re: Arctic Image of the Day
Post by: Kate on September 20, 2016, 11:20:00 AM
Lots and lots of thick smoke
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on October 02, 2016, 11:56:24 AM
Pretty patterns in the new ice forming at the western entrance to McClure Strait:

http://GreatWhiteCon.info/2016/09/is-the-northwest-passage-freezing-or-melting/ (http://GreatWhiteCon.info/2016/09/is-the-northwest-passage-freezing-or-melting/)
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on October 02, 2016, 12:03:25 PM
One wonders whether the crew of this Chinese flagged vessel gets shore-leave at Port of Barrow Ak?


I thought it looked like the Korean icebreaker Araon:

http://GreatWhiteCon.info/2016/08/crystal-serenity-sets-sail-for-the-northwest-passage/#Aug-24 (http://GreatWhiteCon.info/2016/08/crystal-serenity-sets-sail-for-the-northwest-passage/#Aug-24)
Title: Re: Arctic Image of the Day
Post by: Kate on October 23, 2016, 09:35:58 AM
It's a bit chilly to keep the door open, even if it's only the mud room  :o

Title: Re: Arctic Image of the Day
Post by: magnamentis on October 23, 2016, 03:58:38 PM
It's a bit chilly to keep the door open, even if it's only the mud room  :o

they perhaps want a warmer climate up there and try to support warming with a bit of heating energy blowing out for nothing LOL with a prise of seriousness. what a horrible example to permanently leave doors open during the heating season ( probably 12 months up there )
Title: Re: Arctic Image of the Day
Post by: Kate on October 24, 2016, 09:41:16 AM
It's a bit chilly to keep the door open, even if it's only the mud room  :o

they perhaps want a warmer climate up there and try to support warming with a bit of heating energy blowing out for nothing LOL with a prise of seriousness. what a horrible example to permanently leave doors open during the heating season ( probably 12 months up there )

It's a hobby of mine to watch Barrow. This guy has his mud door open for about 3/4 of the year ( swear it's true !!! ). I also like to watch the grass grow in Barrow because I think it's a very quick and easy way to see if they're having a sunny, warm year. This year the grass didn't get very green, not because it wasn't warm enough but because of the lack of sunlight. Clouds make a huge difference and you see it not just the ice, but in the grass and wildlife
Title: Re: Arctic Image of the Day
Post by: solartim27 on October 25, 2016, 11:50:12 PM
I am sad to report the death of researcher Gordon Hamilton this weekend in an accident while working in Antarctica.
More information in the above post

Gordon Hamilton with an automated laser scanning system installed to monitor Helheim Glacier, in Southeast Greenland. July 2015.
Credit:  Adam LeWinter
Title: Re: Arctic Image of the Day
Post by: Cate on October 26, 2016, 03:31:35 PM
I am sad to report the death of researcher Gordon Hamilton this weekend in an accident while working in Antarctica.
More information in the above post

Gordon Hamilton with an automated laser scanning system installed to monitor Helheim Glacier, in Southeast Greenland. July 2015.
Credit:  Adam LeWinter

I found it poignant that Dr Hamilton was from Dundee, a city with an outstanding history of polar exploration and exploit. He certainly did that heritage proud.

Here is The Courier, the leading paper in Dundee:
https://www.thecourier.co.uk/fp/news/local/dundee/303984/dundee-born-antarctic-scientist-dies-plunging-crevasse/ (https://www.thecourier.co.uk/fp/news/local/dundee/303984/dundee-born-antarctic-scientist-dies-plunging-crevasse/)


Title: Re: Arctic Image of the Day
Post by: timbucks on November 18, 2016, 12:41:48 PM
I've been reading this forum (in lurk mode) for a long time, but only registered today.  I'd just downloaded PhotoScan on my phone and pulled out some old photos and I came across this one of me standing on ice floes at Prudhoe Bay in Alaska (I think the date is around June 25th in either 1997 or 1998) - it's hard to tell from Worldview but would there still have been ice that close to shore in June 2016?
Title: Re: Arctic Image of the Day
Post by: oren on November 18, 2016, 01:22:36 PM
I've been reading this forum (in lurk mode) for a long time, but only registered today.  I'd just downloaded PhotoScan on my phone and pulled out some old photos and I came across this one of me standing on ice floes at Prudhoe Bay in Alaska (I think the date is around June 25th in either 1997 or 1998) - it's hard to tell from Worldview but would there still have been ice that close to shore in June 2016?
Welcome timbucks. great photo!
Title: Re: Arctic Image of the Day
Post by: Cate on November 22, 2016, 03:16:59 AM
Not my shot, and I foolishly neglected to note the source. Can anyone ID place, photographer?
Title: Re: Arctic Image of the Day
Post by: slow wing on November 22, 2016, 06:32:40 AM
Nice image, Cate!

It was taken by Patty Waymire and published in a National Geographic feature on climate change:
http://yourshot.nationalgeographic.com/stories/climate-change-focus/ (http://yourshot.nationalgeographic.com/stories/climate-change-focus/)

"A solitary bear sits on the edge of one of the Barter Islands."

Barter Island (singular, according to Wikipedia) is on the Arctic Coast of Alaska:
https://en.wikipedia.org/wiki/Barter_Island (https://en.wikipedia.org/wiki/Barter_Island)
Title: Re: Arctic Image of the Day
Post by: Cate on November 22, 2016, 01:09:31 PM
Thanks so much, slow wing. I knew someone here would know. The ASIF is the living, breathing encyclopedia of the Arctic.  :D
Title: Re: Arctic Image of the Day
Post by: Pmt111500 on November 30, 2016, 06:09:54 AM
Nice photo, Cate.

Here's a slightly mad smiley of 10hPa winds today. I guess these are pretty normal situations when the seasons change, but the news item should be the season change is somewhat late on large areas on NH. (to Stupid Questions section, isn't this the Upper Stratosphere Night Jet forming?)
Title: Re: Arctic Image of the Day
Post by: FishOutofWater on November 30, 2016, 03:31:59 PM
This fall the stratosphere has been hammered by both planetary waves #1 and #2. The stratospheric polar vortex split at the end of October and has been displaced from the pole by wave #1 activity for several weeks. I have been watching the stratosphere for several years so I don't know what's normal based on personal observation but papers and web sites by stratospheric experts I have read tell me that this is anything but normal.

The stratosphere has warmed not just at 10 mb but also down to 70mb. -46C at Barrow at 70mb is outrageously hot, especially when you consider the what the potential temperature is. These temperatures are far warmer than the tropics or normal summer temperatures for Barrow at 70mb. This heat is caused by waves breaking into the stratosphere from the troposphere. The slow rising up of warm air from the troposphere to the stratosphere in the tropics over Indonesia produces stratospheric temperatures of negative 80. The lack of sea ice over the Barents and Kara seas is interacting with the atmospheric circulation to displace the stratospheric polar vortex towards Siberia.





Title: Re: Arctic Image of the Day
Post by: Gray-Wolf on December 05, 2016, 12:14:14 PM
Below is a polar image from Yesterday from 'Wokingham Weather' here in the UK;

http://www.woksat.info/wos.html (http://www.woksat.info/wos.html)

It highlights just how messed up the pack is? It looks as though a Crackopalypse event has already ripped through the pack ( I know it hasn't) . It set me wondering just how much a Full Moon Tidal Bulge would impact such ice? Will it 'snap' the connections between floes further weakening the bond each month making the 'grenade/choc bar' pack easier to disrupt?

(http://www.woksat.info/etcyl04/full/yl04-1351-f-grn-n.JPG)
Title: Re: Arctic Image of the Day
Post by: Hefaistos on January 19, 2017, 10:59:55 AM
A series of beautiful arctic photos:

https://www.theguardian.com/artanddesign/2017/jan/19/what-should-be-pristine-white-is-littered-with-blue-timo-liebers-arctic-photography (https://www.theguardian.com/artanddesign/2017/jan/19/what-should-be-pristine-white-is-littered-with-blue-timo-liebers-arctic-photography)
Title: Re: Arctic Image of the Day
Post by: Tor Bejnar on January 20, 2017, 02:01:50 AM
From HYCOM (https://www7320.nrlssc.navy.mil/hycomARC/navo/arcticictnowcast.gif), we have an image of the green Arctic monster - a GAM, not to be confused with a GAC.  Complete with a blue eye, small dark blue tongue and horn on its snout.  Is that a red and yellow scarf around its head and neck? (it is cold out there).  The rest of the GAM is obviously hiding beneath Greenland and the CAA.
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on January 20, 2017, 02:50:44 AM
Looks like a boars head.
Title: Re: Arctic Image of the Day
Post by: budmantis on January 20, 2017, 06:40:43 AM
A pterodactyl head with an elephant's trunk.
Title: Re: Arctic Image of the Day
Post by: DoomInTheUK on January 20, 2017, 03:23:01 PM
Maybe a Tapir with it's nose in the Fram?
Title: Re: Arctic Image of the Day
Post by: magnamentis on January 20, 2017, 03:34:49 PM
goes into this direction LOL
Title: Re: Arctic Image of the Day
Post by: anotheramethyst on January 21, 2017, 01:26:10 AM
It looks a bit like a dragon king.... As if this "freezing" season wasn't scary enough!
Title: Re: Arctic Image of the Day
Post by: Shared Humanity on January 24, 2017, 04:39:48 AM
OK...it's not the Arctic but it's still one very cool picture.....Lake Charlevoix, Michigan. The man is standing on 2 to 2 1/2 inches of ice that formed on two successive, wind free days of 6F weather. The water is six feet deep.
Title: Re: Arctic Image of the Day
Post by: magnamentis on January 26, 2017, 11:29:58 PM
those are almost cozy temps for end of january :-)
Title: Re: Arctic Image of the Day
Post by: magnamentis on January 27, 2017, 10:40:21 PM
to be continued, that's very warm indeed, not seen this as far back as i remember and certainly not for much longer than an hour or two.
Title: Re: Arctic Image of the Day
Post by: bosbas on January 27, 2017, 11:54:58 PM
And even warmer now. -1.7C
Title: Re: Arctic Image of the Day
Post by: magnamentis on January 28, 2017, 02:16:09 PM
And even warmer now. -1.7C

yeah, thanks, as an old "snowman" from the swiss alps i can even see how heavy the snow has become.

nice weekend @all
Title: Re: Arctic Image of the Day
Post by: magnamentis on January 28, 2017, 02:25:45 PM
sun is up in the kara sea as per these days (depending on where exactly )

why is that worth to mention? because half of the kara is black water and if that remains like that for another short time we shall have a significantly increased energy input through insolation (reduced albedo) compared to any or at least most previous years
Title: Re: Arctic Image of the Day
Post by: magnamentis on January 30, 2017, 12:23:43 AM
a few guys and pals up there in barrows have certainly been celebrating the return of mother sun by the 22nd of January. :-)

curious if and when o-buoy 14 will resume service or whether we shall get more buoys this year, albeit not probable considering the current policy in the US and the economical problems elsewhere will make funding not easy.

hope dies the last :-)
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on January 30, 2017, 02:48:22 PM
sun is up in the kara sea as per these days (depending on where exactly ) gh insolation (reduced albedo) compared to any or at least most previous years

Do you by any chance have links to the sources of your screenshots?
Title: Re: Arctic Image of the Day
Post by: magnamentis on January 30, 2017, 03:57:11 PM
sun is up in the kara sea as per these days (depending on where exactly ) gh insolation (reduced albedo) compared to any or at least most previous years


Do you by any chance have links to the sources of your screenshots?


some yes, some i don't remember from where i took them sorry. below those i could reproduce:

sun & moon calender
https://www.timeanddate.com/sun/russia/dikson (https://www.timeanddate.com/sun/russia/dikson)

various webcams
https://sites.google.com/site/arcticseaicegraphs/webcams (https://sites.google.com/site/arcticseaicegraphs/webcams)

google earth
https://www.google.com/earth/ (https://www.google.com/earth/)

more images
http://www.gettyimages.es/fotos/kara-sea?excludenudity=false&sort=mostpopular&mediatype=photography&phrase=kara%20sea (http://www.gettyimages.es/fotos/kara-sea?excludenudity=false&sort=mostpopular&mediatype=photography&phrase=kara%20sea)

even more
https://www.google.es/search?q=kara%2Bsea%2Bimages&num=100&client=safari&rls=en&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwiJhZzXkOrRAhVM02MKHeKRDREQsAQIGw&biw=1676&bih=944 (https://www.google.es/search?q=kara%2Bsea%2Bimages&num=100&client=safari&rls=en&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwiJhZzXkOrRAhVM02MKHeKRDREQsAQIGw&biw=1676&bih=944)
Title: Re: Arctic Image of the Day
Post by: Jim Hunt on January 30, 2017, 05:41:09 PM
some yes, some i don't remember from where i took them sorry. below those i could reproduce:

Thanks. The calendar is new to me. The bottom two looked as though they might possibly have been recent images from the Kara, but it seems they're merely "stock images" chosen to illustrate albedo?
Title: Re: Arctic Image of the Day
Post by: magnamentis on January 30, 2017, 05:51:49 PM
some yes, some i don't remember from where i took them sorry. below those i could reproduce:

Thanks. The calendar is new to me. The bottom two looked as though they might possibly have been recent images from the Kara, but it seems they're merely "stock images" chosen to illustrate albedo?

exactly you got it all right, they were meant as a showcase to illustrate the difference between Kara ice covered or with open water at very low sun agle.
Title: Re: Arctic Image of the Day
Post by: iceman on February 12, 2017, 05:32:53 PM
entrainment of tropical moisture from Panama to Iceland
Title: Re: Arctic Image of the Day
Post by: Jim Williams on February 12, 2017, 05:51:21 PM
entrainment of tropical moisture from Panama to Iceland

and beyond: http://tropic.ssec.wisc.edu/real-time/mtpw2/product.php?color_type=tpw_nrl_colors&prod=global2&timespan=24hrs&anim=html5 (http://tropic.ssec.wisc.edu/real-time/mtpw2/product.php?color_type=tpw_nrl_colors&prod=global2&timespan=24hrs&anim=html5)

this is taken directly from Neven's https://sites.google.com/site/arcticseaicegraphs/ (https://sites.google.com/site/arcticseaicegraphs/)
Title: Re: Arctic Image of the Day
Post by: pikaia on February 14, 2017, 10:18:09 AM
(https://pbs.twimg.com/media/C4kMkeZWcAU_g-z.jpg)

Recently there has been a particularly good display of Polar Stratospheric Clouds, photographed above.

From http://spaceweather.com/ (http://spaceweather.com/)

"These clouds are newsworthy because normally the stratosphere has no clouds at all. Home to the ozone layer, the stratosphere is arid and almost always transparent. Yet, Stålnacke says, "we've been seeing stratospheric clouds very often this winter and last."
Title: Re: Arctic Image of the Day
Post by: Eli81 on February 14, 2017, 04:36:49 PM
Obuoy14's first image of the year:


Can't see much, but she's alive!
Title: Re: Arctic Image of the Day
Post by: bairgon on February 25, 2017, 11:22:19 PM
Melting ice to the east of Greenland, originally posted at http://forum.arctic-sea-ice.net/index.php/topic,1884.msg104534.html#msg104534 (http://forum.arctic-sea-ice.net/index.php/topic,1884.msg104534.html#msg104534)

Explore the satellite image at https://worldview.earthdata.nasa.gov/?p=arctic&l=VIIRS_SNPP_CorrectedReflectance_TrueColor(hidden),MODIS_Aqua_CorrectedReflectance_TrueColor(hidden),MODIS_Terra_CorrectedReflectance_TrueColor,Reference_Labels(hidden),Reference_Features(hidden),Coastlines&t=2017-02-24&z=3&v=-56076.41212691949,-3252172.3402470793,435443.5878730805,-3000012.3402470793 (https://worldview.earthdata.nasa.gov/?p=arctic&l=VIIRS_SNPP_CorrectedReflectance_TrueColor(hidden),MODIS_Aqua_CorrectedReflectance_TrueColor(hidden),MODIS_Terra_CorrectedReflectance_TrueColor,Reference_Labels(hidden),Reference_Features(hidden),Coastlines&t=2017-02-24&z=3&v=-56076.41212691949,-3252172.3402470793,435443.5878730805,-3000012.3402470793)



Title: Re: Arctic Image of the Day
Post by: bairgon on February 26, 2017, 07:18:08 AM
I zoomed out a bit from that previous picture and wemt forward a day, and found a wave of cloud engulfing Greenland. I've turned it over to make it look more effective.

See satellite pic at https://worldview.earthdata.nasa.gov/?p=arctic&l=VIIRS_SNPP_CorrectedReflectance_TrueColor(hidden),MODIS_Aqua_CorrectedReflectance_TrueColor(hidden),MODIS_Terra_CorrectedReflectance_TrueColor,Reference_Labels(hidden),Reference_Features(hidden),Coastlines&t=2017-02-25&z=3&v=-1741581.779708392,-6148497.2199362805,2292978.2202916085,1715822.7800637197&r=90.0000 (https://worldview.earthdata.nasa.gov/?p=arctic&l=VIIRS_SNPP_CorrectedReflectance_TrueColor(hidden),MODIS_Aqua_CorrectedReflectance_TrueColor(hidden),MODIS_Terra_CorrectedReflectance_TrueColor,Reference_Labels(hidden),Reference_Features(hidden),Coastlines&t=2017-02-25&z=3&v=-1741581.779708392,-6148497.2199362805,2292978.2202916085,1715822.7800637197&r=90.0000)
Title: Re: Arctic Image of the Day
Post by: VeliAlbertKallio on March 01, 2017, 01:07:42 AM
On the ground, this behemoth has produced 80-year record snowfall in Iceland with 51 cm snowfall in one single event. This represents a substantial latent heat transfer and on sea ice it produces heat and insulation from cold once skies clear. It is just 4 cm below all-time record event in January 1937, 80 years and 1 month ago(!): http://www.bbc.co.uk/newsbeat/article/39104230/iceland-gets-record-breaking-snowfall-and-the-pictures-are-amazing (http://www.bbc.co.uk/newsbeat/article/39104230/iceland-gets-record-breaking-snowfall-and-the-pictures-are-amazing)  I suppose these are my pictures for the day..!  :o

I zoomed out a bit from that previous picture and wemt forward a day, and found a wave of cloud engulfing Greenland. I've turned it over to make it look more effective.

See satellite pic at [url]https://worldview.earthdata.nasa.gov/?p=arctic&l=VIIRS_SNPP_CorrectedReflectance_TrueColor(hidden),MODIS_Aqua_CorrectedReflectance_TrueColor(hidden),MODIS_Terra_CorrectedReflectance_TrueColor,Reference_Labels(hidden),Reference_Features(hidden),Coastlines&t=2017-02-25&z=3&v=-1741581.779708392,-6148497.2199362805,2292978.2202916085,1715822.7800637197&r=90.0000[/url] ([url]https://worldview.earthdata.nasa.gov/?p=arctic&l=VIIRS_SNPP_CorrectedReflectance_TrueColor(hidden),MODIS_Aqua_CorrectedReflectance_TrueColor(hidden),MODIS_Terra_CorrectedReflectance_TrueColor,Reference_Labels(hidden),Reference_Features(hidden),Coastlines&t=2017-02-25&z=3&v=-1741581.779708392,-6148497.2199362805,2292978.2202916085,1715822.7800637197&r=90.0000)[/url]
Title: Re: Arctic Image of the Day
Post by: charles_oil on March 07, 2017, 12:44:22 PM

Video rather than an image - listening to it is a nice contrast to the hurley-burley news and highspeed trainwreck of politics....


http://gcaptain.com/need-relax-try-listening-sounds-idling-arctic-icebreaker-beset-ice/ (http://gcaptain.com/need-relax-try-listening-sounds-idling-arctic-icebreaker-beset-ice/)
Title: Re: Arctic Image of the Day
Post by: longwalks1 on March 08, 2017, 11:22:38 AM
And for the above - for downloading just the audio from youtube (and one thumbnail image) and converting to mp3

youtube-dl --extract-audio --prefer-ffmpeg --audio-format mp3 --audio-quality 0 --embed-thumbnail  "URL"

works quite well in linux and BSD if you have an up to date youtube-dl
Title: Re: Arctic Image of the Day
Post by: Cate on March 09, 2017, 10:02:56 PM
Spotted on the pack ice north of Twillingate, Newfoundland, yesterday. A big bear, in good condition. Wonderful sight.

Polar bears are not unusual on the NE coast of Newfoundland this time of year. This chap would be following the seal herds, which are whelping on the pack ice. Sometimes they do come ashore and are stranded if the ice moves off. Very young or old bears are the most dangerous, as they are often hungry. Wildlife officials will transport stranded bears back out to the ice edge, if possible.



Title: Re: Arctic Image of the Day
Post by: Sigmetnow on March 11, 2017, 07:28:18 PM
NASA Ice: Photo from yesterday's #IceBridge flight: View across the Nares Strait from Greenland to Ellesmere Island, Canada.
https://twitter.com/nasa_ice/status/840614419767918594

NASA Ice: Pic from yesterday's #IceBridge flight: Clouds forming over leads due to the sharp temperature contrast between the warm water and cold air.
https://twitter.com/nasa_ice/status/840614707417481217
Title: Re: Arctic Image of the Day
Post by: Jim Williams on March 11, 2017, 08:32:56 PM
NASA Ice: Photo from yesterday's #IceBridge flight: View across the Nares Strait from Greenland to Ellesmere Island, Canada.
https://twitter.com/nasa_ice/status/840614419767918594

NASA Ice: Pic from yesterday's #IceBridge flight: Clouds forming over leads due to the sharp temperature contrast between the warm water and cold air.
https://twitter.com/nasa_ice/status/840614707417481217
A harbinger of things to come.  The desert is breaking up.
Title: Re: Arctic Image of the Day
Post by: pikaia on March 13, 2017, 10:24:07 AM
http://www.comedywildlifephoto.com/gallery/2016_winners.php#&gid=1&pid=10 (http://www.comedywildlifephoto.com/gallery/2016_winners.php#&gid=1&pid=10)

From the Comedy Wildlife Photo Awards.

http://www.comedywildlifephoto.com/gallery/2016_winners.php (http://www.comedywildlifephoto.com/gallery/2016_winners.php)

Title: Re: Arctic Image of the Day
Post by: Tor Bejnar on March 14, 2017, 08:22:54 PM
Is this the head of a giant snowman (yellow scarf, green mouth, dark blue eyes), as seen through a window with panes (black lines)?
(AKA screenshot from Arctic HYCOM (https://www7320.nrlssc.navy.mil/hycomARC/navo/arcticictn_nowcast_anim30d.gif))
Title: Re: Arctic Image of the Day
Post by: Cate on March 14, 2017, 11:41:55 PM
He looks a bit sad......

"Frosty the Snowman knew the sun was hot that day
So he said let's run and we'll have some fun now
Before I melt away......" 

:(
Title: Re: Arctic Image of the Day
Post by: VeliAlbertKallio on March 18, 2017, 01:37:07 AM
THE END OF THE ARCTIC CAN ALSO HAPPEN THIS WAY:

https://worldview.earthdata.nasa.gov/?p=arctic&l=MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_CorrectedReflectance_TrueColor,Coastlines,Reference_Labels(hidden),Reference_Features(hidden)&t=2017-03-17&z=3&v=-2044602.8045363002,-4147198.448692568,-1520314.8045363002,-3816958.448692568
Title: Re: Arctic Image of the Day
Post by: jdallen on March 18, 2017, 01:43:05 AM
THE END OF THE ARCTIC CAN ALSO HAPPEN THIS WAY:

https://worldview.earthdata.nasa.gov/?p=arctic&l=MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_CorrectedReflectance_TrueColor,Coastlines,Reference_Labels(hidden),Reference_Features(hidden)&t=2017-03-17&z=3&v=-2044602.8045363002,-4147198.448692568,-1520314.8045363002,-3816958.448692568

Ah, yes, Manicouagan, one of my favorite astroblemes... It was a rather large one.

https://en.wikipedia.org/wiki/Manicouagan_crater
Title: Re: Arctic Image of the Day
Post by: Cate on March 18, 2017, 01:22:17 PM
The "eye of Quebec."
Title: Re: Arctic Image of the Day
Post by: VeliAlbertKallio on March 20, 2017, 01:37:14 PM
Sea Ice Transport 20.03.2017: a vast tongue of sea ice is passing well past the Franz Joseph Land to the Barentz Sea and weak sea ice around Svalbard today: https://worldview.earthdata.nasa.gov/?p=arctic&l=MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_CorrectedReflectance_TrueColor,Coastlines,Reference_Labels(hidden),Reference_Features(hidden)&t=2017-03-20&z=3&v=638544.5625044382,-490825.29911611415,1687120.5625044382,169654.70088388585
Title: Re: Arctic Image of the Day
Post by: epiphyte on March 20, 2017, 02:04:31 PM
Sea Ice Transport 20.03.2017: a vast tongue of sea ice is passing well past the Franz Joseph Land to the Barentz Sea and weak sea ice around Svalbard today: https://worldview.earthdata.nasa.gov/?p=arctic&l=MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_CorrectedReflectance_TrueColor,Coastlines,Reference_Labels(hidden),Reference_Features(hidden)&t=2017-03-20&z=3&v=638544.5625044382,-490825.29911611415,1687120.5625044382,169654.70088388585
From the size and shape of the floes, I'd bet that those are some of the die-hard MYI boulders which made it through last summer in the Northern Laptev. So long...

(...and thanks for all the fish)
Title: Re: Arctic Image of the Day
Post by: Jontenoy on March 20, 2017, 03:14:21 PM
Hi All
This is my first blog on your wonderful site which I have been watching for nearly a year.
Today NASA announced that Greeland and Antarctic are losing 400 gigatons of ice / year. I have just calculated this as giving 2.38 mm / year height increase. Water thermal expansion + glacial and other surface ice would be in addition to this (also aquafier surface pumping). Does this seem a bit high ?
Title: Re: Arctic Image of the Day
Post by: Neven on March 20, 2017, 04:39:02 PM
Welcome, Jontenoy. Your profile has been released now, so you can post freely.  I see that you've asked your question in the SLR thread as well. This one is for Arctic images.
Title: Re: Arctic Image of the Day
Post by: romett1 on March 20, 2017, 07:33:53 PM
I guess I found the creature who is eating all the ice near Svalbard - Worldview, Mar 12 - Mar 13.
Title: Re: Arctic Image of the Day
Post by: slow wing on March 20, 2017, 10:16:59 PM
It's Icepacman!  :o
Title: Re: Arctic Image of the Day
Post by: magnamentis on March 20, 2017, 10:41:40 PM
It's Icepacman!  :o

hehe.... good that i saw your post before writing the same :-) uhhh.... just remembering 45 years ago sitting in front of those machines for hours each day :-)
Title: Re: Arctic Image of the Day
Post by: Thomas Barlow on March 23, 2017, 02:16:16 PM
I guess I found the creature who is eating all the ice near Svalbard - Worldview, Mar 12 - Mar 13.

Ha ha ha !
Good one.
Title: Re: Arctic Image of the Day
Post by: Alison on March 23, 2017, 04:38:32 PM
Great fun - thank you for posting :)
Title: Re: Arctic Image of the Day
Post by: Tor Bejnar on March 23, 2017, 04:59:40 PM
That image is addictive.  "Stop," I say, "Stop!  Turn it off.  Unplug it if you have to.  Stop the machine - it has gone too far!  We've lost too much sea ice already."  :'(
Title: Re: Arctic Image of the Day
Post by: VeliAlbertKallio on March 25, 2017, 01:10:44 AM
The icepacman of the Fram Strait has been active today: 350 km x 325 km chunk of sea ice is now leaving the Central Arctic today (24th March 2017) with large separation gap forming. I doubt that any bigger section of the Arctic Ocean ice cap could get through the gap, but you never know what comes next behind the bend (or more correctly what leaves from behind the bend [of Greenland])... https://worldview.earthdata.nasa.gov/?p=arctic&l=MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_CorrectedReflectance_TrueColor,Coastlines,Reference_Labels(hidden),Reference_Features(hidden)&t=2017-03-24&z=3&v=87993.52285053895,-1196593.2128281824,1136569.522850539,-536113.2128281824
Title: Re: Arctic Image of the Day
Post by: iwantatr8 on March 26, 2017, 09:06:09 AM
Splat!

an image of a glacier just after calving...

http://apps.sentinel-hub.com/sentinel-playground/#lat=68.37591234101484&lng=-30.027694702148438&zoom=11&preset=CUSTOM&layers=B05,B03,B01&maxcc=100&gain=0.5&gamma=1.3&time=2015-01-01|2017-03-21&cloudCorrection=replace&atmFilter=&/showImage (http://apps.sentinel-hub.com/sentinel-playground/#lat=68.37591234101484&lng=-30.027694702148438&zoom=11&preset=CUSTOM&layers=B05,B03,B01&maxcc=100&gain=0.5&gamma=1.3&time=2015-01-01|2017-03-21&cloudCorrection=replace&atmFilter=&/showImage)

Title: Re: Arctic Image of the Day
Post by: Mr.Far on March 26, 2017, 10:23:18 PM
Icepacman is great! He`s made my day ;D
Title: Re: Arctic Image of the Day
Post by: Cate on March 30, 2017, 01:51:28 PM
It's spring on the NE coast of Newfoundland, which means the polar bears that follow the whelping herds of harp and hood seals out on the pack ice are on the move. Some come ashore and often wander around remote communities, at great peril to local residents----and, sometimes, sadly, to themselves. This one was spotted in Wesleyville  (latitude N49.15) on March 29, which is near the southernmost limit of their range. The RCMP and wildlife officials have issued warnings and are monitoring.

PHOTO by local resident Dana Blackmore.

Title: Re: Arctic Image of the Day
Post by: DrTskoul on March 30, 2017, 01:57:41 PM
They are some beastly animals...
Title: Re: Arctic Image of the Day
Post by: Cate on March 30, 2017, 09:02:17 PM
UPDATE on that Newfoundland bear, with a photo that will probably go viral:

http://www.cbc.ca/news/canada/newfoundland-labrador/praying-polar-bear-picture-wesleyville-1.4047414 (http://www.cbc.ca/news/canada/newfoundland-labrador/praying-polar-bear-picture-wesleyville-1.4047414)
Title: Re: Arctic Image of the Day
Post by: TerryM on March 31, 2017, 10:15:56 AM
UPDATE on that Newfoundland bear, with a photo that will probably go viral:

[url]http://www.cbc.ca/news/canada/newfoundland-labrador/praying-polar-bear-picture-wesleyville-1.4047414[/url] ([url]http://www.cbc.ca/news/canada/newfoundland-labrador/praying-polar-bear-picture-wesleyville-1.4047414[/url])

Personally prefer the second photo, but the first has more chance of going viral.


Nice to see a bear that doesn't appear emaciated.


Terry
Title: Re: Arctic Image of the Day
Post by: Ninebelowzero on April 01, 2017, 02:52:46 AM
Nor this one

http://www.telegraph.co.uk/science/2017/03/31/polar-bears-spotted-scotland-animals-flee-melting-arctic-ice/ (http://www.telegraph.co.uk/science/2017/03/31/polar-bears-spotted-scotland-animals-flee-melting-arctic-ice/)

But a few corpses appear to have been washed up on Britains beaches in the last year.
Title: Re: Arctic Image of the Day
Post by: Phil. on April 01, 2017, 03:19:57 AM
Nor this one

[url]http://www.telegraph.co.uk/science/2017/03/31/polar-bears-spotted-scotland-animals-flee-melting-arctic-ice/[/url] ([url]http://www.telegraph.co.uk/science/2017/03/31/polar-bears-spotted-scotland-animals-flee-melting-arctic-ice/[/url])

But a few corpses appear to have been washed up on Britains beaches in the last year.


The famous Lirpa Loof rears its head.   :)
I wonder if it will get the same response as the Isle of San Seriffe?
Title: Re: Arctic Image of the Day
Post by: Cate on April 04, 2017, 03:00:46 PM
Beauty shot: muskoxen, north of Zachariae glacier, Greenland on April 3.
Photo by NASA Operation Icebridge/Jeremy Harbeck.
Lots more on their FB page.

Title: Re: Arctic Image of the Day
Post by: Cate on April 05, 2017, 01:39:46 PM
Another one from NASA Operation Icebridge.

"Clouds (near the center of the photo) over the sea ice in Nares Strait as seen from a window of NASA’s P3." Posted on their FB page April 4.



Title: Re: Arctic Image of the Day
Post by: numerobis on April 05, 2017, 08:21:54 PM
Here's my view of the North end of Hudson Strait a few miles from Baffin Island a few minutes ago:
Title: Re: Arctic Image of the Day
Post by: numerobis on April 05, 2017, 08:24:25 PM
Oops, that's huge and rotated! I'll edit that when I get to my computer.
Title: Re: Arctic Image of the Day
Post by: johnm33 on April 06, 2017, 10:55:13 AM
Oops, that's huge and rotated! I'll edit that when I get to my computer.
Rights itself with a click.
Title: Re: Arctic Image of the Day
Post by: VeliAlbertKallio on April 06, 2017, 07:57:36 PM
Fragility of sea ice revealed by a topographic constraint: circular ice breaking area radiates from an island north of the Kara Sea: https://worldview.earthdata.nasa.gov/?p=arctic&l=VIIRS_SNPP_CorrectedReflectance_TrueColor(hidden),MODIS_Aqua_CorrectedReflectance_TrueColor(hidden),MODIS_Terra_CorrectedReflectance_TrueColor,Reference_Labels(hidden),Reference_Features(hidden),Coastlines&t=2017-04-06&z=3&v=562902.8160275342,370620.34556485247,1087190.8160275342,700860.3455648525
Title: Re: Arctic Image of the Day
Post by: jdallen on April 07, 2017, 08:34:14 AM
Fragility of sea ice revealed by a topographic constraint: circular ice breaking area radiates from an island north of the Kara Sea: <snip>
Great Image, VeliAlbertKallio!

That demonstrates categorically just how vulnerable the ice is in that region.
Title: Re: Arctic Image of the Day
Post by: numerobis on April 11, 2017, 03:27:02 PM
I came down with a cold just after landing last week, then had to nurse my sweetheart who for some reason blames me for bringing the plague up to Inuit territory like I'm a genocidal European explorer.

But now that we're better, I have time to share a few photos. I'll space them out this week.

Today's photo, a cool feature I saw on approach to Iqaluit: rings of ridged ice around the shores of Frobisher Bay and its islands.
Title: Re: Arctic Image of the Day
Post by: Cate on April 15, 2017, 12:19:14 AM
"Petermann glacier's east wall near the terminus of the floating ice shelf, with blowing snow visible coming from the plateau to the east."
Photo NASA/John Sonntag. Posted today by NASA Operation Icebridge.

Title: Re: Arctic Image of the Day
Post by: RoxTheGeologist on April 15, 2017, 06:30:00 PM
"Petermann glacier's east wall near the terminus of the floating ice shelf, with blowing snow visible coming from the plateau to the east."
Photo NASA/John Sonntag. Posted today by NASA Operation Icebridge.

That is a truly beautiful image.
Title: Re: Arctic Image of the Day
Post by: numerobis on April 17, 2017, 05:18:56 PM
Here's a close-up view of the ringed ice I photographed from the sky. This is on the bay between the Tundra Valley and Apex neighbourhoods of Iqaluit.

When you're in it, you can't see the pattern. It's about 200m of rough ice (at a guess; I could be off by a fair bit) out to the smooth ice in the bay; there's a clear phase shift at about 150m from shore where suddenly you only get a few big lumps and mostly smooth ice. I can guess at mechanisms for that phase shift but I don't know exactly -- my main guess is that it's where the low tide shoreline is.

Where I took this picture is a sand beach, so the rough ice has a lot of sand embedded: it formed when the water froze at low tide, then got lifted up (the tide is very strong -- about 8m here). Now that it's April, we see the ice around the dark sand melting out very fast.

The sun is incredibly strong: air temperature was -15 C but I was in a small sweater, snow on my boots was melting almost immediately, and when I headed back, the snow had warmed enough that it wasn't sticking to the wax on my skis. Also I had a good sunburn.
Title: Re: Arctic Image of the Day
Post by: bairgon on April 19, 2017, 07:18:14 AM
Grounded iceberg near Ferryland, Newfoundland - see http://www.bbc.co.uk/news/world-us-canada-39632047 (http://www.bbc.co.uk/news/world-us-canada-39632047)

(https://ichef-1.bbci.co.uk/news/976/cpsprodpb/2359/production/_95694090_hi039052770.jpg)
Title: Re: Arctic Image of the Day
Post by: Bill Fothergill on April 19, 2017, 10:48:29 AM
Grounded iceberg near Ferryland, Newfoundland - see [url]http://www.bbc.co.uk/news/world-us-canada-39632047[/url] ([url]http://www.bbc.co.uk/news/world-us-canada-39632047[/url])



Ha! I just came onto this thread in order to post that image!

One doesn't see a sight like that very often in South West England these days. (It's been a while since the LGM.)
Title: Re: Arctic Image of the Day
Post by: pikaia on April 19, 2017, 12:19:54 PM
That is just the 10% above the water!
Title: Re: Arctic Image of the Day
Post by: Jim Pettit on April 19, 2017, 01:04:09 PM
Grounded iceberg near Ferryland, Newfoundland - see [url]http://www.bbc.co.uk/news/world-us-canada-39632047[/url] ([url]http://www.bbc.co.uk/news/world-us-canada-39632047[/url])


That's an amazing sight. Trying to judge the size of a more or less featureless chunk of out-of-context white can be tricky, but there's got to be, what, 60 meters of freeboard on that thing?

From that article:

It's already been a busy season in iceberg alley, with hundreds of icebergs reported in the Atlantic - many more than usual for this time of year in the coastal regions.


Indeed...
Title: Re: Arctic Image of the Day
Post by: seaicesailor on April 19, 2017, 03:06:09 PM

Edit. Found it, 46 m highest point

http://www.cbc.ca/news/canada/newfoundland-labrador/ferryland-iceberg-traffic-1.4073428 (http://www.cbc.ca/news/canada/newfoundland-labrador/ferryland-iceberg-traffic-1.4073428)
Title: Re: Arctic Image of the Day
Post by: Cate on April 19, 2017, 09:01:02 PM
This is not far from me. Beautiful, yes, but they keep the water and the air so cold and can ruin the summer. Ice also can play havoc with fishing gear. Tourists love it because they don't have to live here. Those of us who have grown up with ice are praying for a solid month of sou-westerlies to take the bergs and the pack well out to sea, and good riddance! :)

FYI

Latitude of Ferryland is 47° 2' N.

So, more southerly than Paris, France.
Title: Re: Arctic Image of the Day
Post by: magnamentis on April 19, 2017, 09:06:32 PM
That is just the 10% above the water!

true, while the base under water is most probably wider similar to tree roots, else it's getting ready to topple :-)
Title: Re: Arctic Image of the Day
Post by: Cate on April 20, 2017, 12:22:47 AM
This is Derrick Bath's vessel, Polar Adventure, battling sea ice at Twillingate, a couple hundred km north of that spectacular berg in Ferryland. Sea ice is a  a major problem for Newfoundland fishermen, coming as it does during lobster and crab season.
 
http://www.cbc.ca/news/canada/newfoundland-labrador/ice-compensation-fisherman-twillingate-1.4076069 (http://www.cbc.ca/news/canada/newfoundland-labrador/ice-compensation-fisherman-twillingate-1.4076069)


Title: Re: Arctic Image of the Day
Post by: Bill Fothergill on April 20, 2017, 05:30:57 PM
... battling sea ice at Twillingate, a couple hundred km north of that spectacular berg in Ferryland. ...

When people describe Twillingate as the "iceberg capital of the world", I assume they are NOT referring to a variety of lettuce.   ;)

Title: Re: Arctic Image of the Day
Post by: gerontocrat on April 20, 2017, 06:15:49 PM
This is not far from me. Beautiful, yes, but they keep the water and the air so cold and can ruin the summer. Ice also can play havoc with fishing gear. Tourists love it because they don't have to live here. Those of us who have grown up with ice are praying for a solid month of sou-westerlies to take the bergs and the pack well out to sea, and good riddance! :)

FYI

Latitude of Ferryland is 47° 2' N.

So, more southerly than Paris, France.
A good reminder of how the North Atlantic Drift keeps me warm in England at 52 N.
Just once in the extraordinary winter of  62-63 there were ice floes under Brighton pier on the South Coast of England. But not 46 m high.
Title: Re: Arctic Image of the Day
Post by: Bill Fothergill on April 20, 2017, 08:07:29 PM
...
A good reminder of how the North Atlantic Drift keeps me warm in England at 52 N. Just once in the extraordinary winter of  62-63 there were ice floes under Brighton pier on the South Coast of England. But not 46 m high.

Ah, the winter of 62/63 - fond memories indeed.  :)

Went head-over-heels outside my house in Glasgow, and ended up with a fractured coccyx.  >:(


... Beautiful, yes, but they keep the water and the air so cold and can ruin the summer. Ice also can play havoc with fishing gear...

Still, there are worse things in this world than a berg made of ice. Imagine waking up one morning, and finding one of these right in the middle of your view...

http://www.bbc.co.uk/news/uk-23584833 (http://www.bbc.co.uk/news/uk-23584833)        :-X

Title: Re: Arctic Image of the Day
Post by: Susan Anderson on April 20, 2017, 10:27:13 PM
Oo er!

I noticed this was from "Wikimedia"; so maybe it's a generic pic? Published 6 April.

(http://assets.climatecentral.org/images/made/4_6_17_Brian_icebergs_arctic_720_482_s_c1_c_c.jpg)

Around 450 icebergs — defined as hunks of ice covering at least 5,382 square feet and between 98-164 feet in thickness — are lurking off the coast of Newfoundland and Labrador, well above the average of 80 usually found for this time of year. The swarm appeared suddenly, too. Just last week, there were only 37 icebergs in the region.

The highest concentration of rogue ice is off the southeast tip of Newfoundland.

http://www.climatecentral.org/news/icebergs-are-swarming-ships-in-the-arctic-21320 (http://www.climatecentral.org/news/icebergs-are-swarming-ships-in-the-arctic-21320)
Title: Re: Arctic Image of the Day
Post by: Bill Fothergill on April 20, 2017, 11:38:11 PM
RE: The Ferryland iceberg photo posted by Bairgon...
... 46 m highest point ...

and

That is just the 10% above the water!

true, while the base under water is most probably wider similar to tree roots, else it's getting ready to topple :-)

If that was sea ice, rather than a chunk of calved glacier, AND ...

if the Lebedev formula for ice growth still had some skill over such an extreme range, then ...

if we said it had an average thickness of ~ 400 metres, then ...

the number of Freezing Degree Days necessary would be approximately 50 million.


That would just require a temperature of -50 degrees Celsius, for about 27 or 28 centuries.

Even I might be prepared to accept a small wager that such a prolonged cool snap is not on the immediate horizon.

Title: Re: Arctic Image of the Day
Post by: Magma. on April 21, 2017, 05:33:56 AM

I noticed this was from "Wikimedia"; so maybe it's a generic pic?

Hi Susan. The metadata indicates it was taken August 14, 2011, near St. Anthony, which is near the NE end of Newfoundland's Northern Peninsula, not far from the SE tip of Labrador on the mainland.

https://commons.wikimedia.org/wiki/File:Icebergs.jpg
Title: Re: Arctic Image of the Day
Post by: Susan Anderson on April 21, 2017, 04:26:56 PM
Magma: thanks. I expose my lack of knowledge (was going to say - ignorance ;) - every day). Proper skepticism is important. A friend found this useful iceberg locator:
http://icebergfinder.com/ (http://icebergfinder.com/)
Title: Re: Arctic Image of the Day
Post by: Martin Gisser on April 21, 2017, 10:58:09 PM
(http://s4.reutersmedia.net/resources/r/?m=02&d=20170420&t=2&i=1181395967&w=780&fh=&fw=&ll=&pl=&sq=&r=2017-04-20T192013Z_5880_MRPRC1B21DF2010_RTRMADP_0_CANADA-WEATHER)
Residents view the first iceberg of the season as it passes the South Shore, also known as "Iceberg Alley", near Ferryland Newfoundland, Canada April 16, 2017. REUTERS/Jody Martin

http://www.reuters.com/news/picture/photos-of-the-week?articleId=USRTS136QJ (http://www.reuters.com/news/picture/photos-of-the-week?articleId=USRTS136QJ)

P.S.: I swear I checked, but it somehow evaded me this picture has already been posted :) But this beauty bears repeating... :-)
Title: Re: Arctic Image of the Day
Post by: VeliAlbertKallio on April 21, 2017, 11:49:58 PM
The Lincoln Sea has traditionally been the strongest area of sea ice with thickest sea ice packs of the Arctic Ocean the norm. This image of 21st April 2017 suggest, instead, a relatively feeble sea ice tumbling down like dominoes at ease with sea ice breaking front fanning out an ever larger circle of open water: https://worldview.earthdata.nasa.gov/?p=arctic&l=VIIRS_SNPP_CorrectedReflectance_TrueColor(hidden),MODIS_Aqua_CorrectedReflectance_TrueColor(hidden),MODIS_Terra_CorrectedReflectance_TrueColor,Reference_Labels(hidden),Reference_Features(hidden),Coastlines&t=2017-04-21&z=3&v=-416774.7992150438,-915224.113907556,-154630.79921504378,-750104.113907556
Title: Re: Arctic Image of the Day
Post by: Cate on April 22, 2017, 01:49:50 AM
A friend found this useful iceberg locator:
[url]http://icebergfinder.com/[/url] ([url]http://icebergfinder.com/[/url])


Hi Susan, that site, which is run by the tourism dept of the provincial government, relies on reports by "ambassadors" and thus gives only a partial picture of the berg situation on our coast.

A more complete picture is compiled daily by the Canadian Ice Service. Click "East Coast", then scroll down to "Daily Iceberg Analysis Chart." The graphic gives the numbers of bergs in each section of the map.

http://www.ec.gc.ca/glaces-ice/default.asp?lang=En&n=D32C361E-1&grp=Guest&mn=&lang=en (http://www.ec.gc.ca/glaces-ice/default.asp?lang=En&n=D32C361E-1&grp=Guest&mn=&lang=en)

If you are on FB, check out "Newfoundland Iceberg Reports", a group which is very current and features photos and local information, also lots of locals posting who are happy to help visitors locate icebergs. 

:)
Title: Re: Arctic Image of the Day
Post by: Cate on April 25, 2017, 12:18:46 AM
Cape Bauld light, at the very tip of Newfoundland's Great Northern Peninsula, today. Lat 51.6N. Just a few minutes from the UNESCO Norse site at L'Anse aux Meadows. Canadian Ice Service charts for today show sea ice extending hundreds of km northwards from here.

PS In summertime, the lightkeeper's house, now disused as such, is a B&B. :)

PHOTO BY SHARON KEAN.

Title: Re: Arctic Image of the Day
Post by: TerryM on April 25, 2017, 01:12:14 AM
Cate
That is amazing. I was there twice in May of 2005 & it was tee shirt weather. In just over a month in Newfoundland and Labrador we saw one far off iceberg.
A friend is headed to Ferryland this summer and is hoping the bergs there are long gone, says it chills the whole area.


Great photo
Terry
Title: Re: Arctic Image of the Day
Post by: epiphyte on April 25, 2017, 05:28:00 AM
That is just the 10% above the water!

Taking a SWAG at it that's ~1.5M M^3 of fresh water. Perhaps someone should wrap it and it's pals in mylar, tow them down to Bahrain, or somewhere like that, and grow some vegetation with it...
Title: Re: Arctic Image of the Day
Post by: charles_oil on April 25, 2017, 04:24:25 PM
https://www.thebigblow.ca/iceberg-whale-tours (https://www.thebigblow.ca/iceberg-whale-tours) looks like the B & B is nearby.
Title: Re: Arctic Image of the Day
Post by: Cate on April 25, 2017, 06:23:20 PM

In just over a month in Newfoundland and Labrador we saw one far off iceberg.
A friend is headed to Ferryland this summer and is hoping the bergs there are long gone, says it chills the whole area.

Great photo
Terry

Terry, I'm with your friend. Ice is lovely to look at but it always means colder waters and thus a likelihood of a slower spring and/or cooler, damper summer. All depends on the wind, which is why all true Newfoundlanders pray for six weeks of sou'westerlies starting just about now. :)
Title: Re: Arctic Image of the Day
Post by: Cate on April 25, 2017, 06:25:43 PM
A stunning collection of NASA IceBridge 2017 photos by NASA Goddard scientist Jeremy Harbeck.

https://jeremyharbeck.smugmug.com/Field-WorkExpeditions/Operation-IceBridge-2017-Arctic