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Author Topic: Arctic Image of the Day  (Read 579307 times)

silkman

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Re: Arctic Image of the Day
« Reply #450 on: April 01, 2015, 02:33:56 PM »
Sparkling clear skies and flying reindeer (?) in Svalbard!

« Last Edit: April 02, 2015, 03:31:42 PM by silkman »

1rover1

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Re: Arctic Image of the Day
« Reply #451 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

Neven

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Re: Arctic Image of the Day
« Reply #452 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.  http://www.portofchurchill.ca/port-media/live-feed

That's pretty cool, but unfortunately I can't 'copy' live camera feeds to the ASIG, only images.
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pikaia

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Re: Arctic Image of the Day
« Reply #453 on: April 05, 2015, 11:43:03 AM »

Wipneus

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Re: Arctic Image of the Day
« Reply #454 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)

pikaia

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Re: Arctic Image of the Day
« Reply #455 on: April 12, 2015, 10:21:46 AM »

Shared Humanity

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Re: Arctic Image of the Day
« Reply #456 on: April 12, 2015, 04:35:32 PM »
Sentinels of the Arctic.



http://apod.nasa.gov/apod/ap150412.html

OK....this needs to be explained.....   :o

Espen

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Re: Arctic Image of the Day
« Reply #457 on: April 12, 2015, 04:37:02 PM »
I think you will find a tree under the snow?
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crandles

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Re: Arctic Image of the Day
« Reply #458 on: April 12, 2015, 04:38:13 PM »
Quote
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.

Shared Humanity

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Re: Arctic Image of the Day
« Reply #459 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...

Espen

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Re: Arctic Image of the Day
« Reply #460 on: April 12, 2015, 04:53:52 PM »
It could be one those guys, but
Have a ice day!

Shared Humanity

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Re: Arctic Image of the Day
« Reply #461 on: April 12, 2015, 05:32:04 PM »
It could be one those guys, but

 ;D ;)

Espen

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Re: Arctic Image of the Day
« Reply #462 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:
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jdallen

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Re: Arctic Image of the Day
« Reply #463 on: April 15, 2015, 06:04:40 AM »
Bering Sea via Lance-Modis
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jdallen

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Re: Arctic Image of the Day
« Reply #464 on: April 15, 2015, 06:07:22 AM »
This space for Rent.

jdallen

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Re: Arctic Image of the Day
« Reply #465 on: April 21, 2015, 05:42:08 PM »
This space for Rent.

Wipneus

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Re: Arctic Image of the Day
« Reply #466 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)

Espen

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Re: Arctic Image of the Day
« Reply #467 on: May 02, 2015, 09:03:55 PM »
My latest contribution was deleted due to different sense of humor!
Hate censorship though!
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diablobanquisa

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Re: Arctic Image of the Day
« Reply #468 on: May 06, 2015, 11:46:47 PM »
Can we see  Greenlandic mountains from the O-Buoy 9?




Jim Hunt

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Re: Arctic Image of the Day
« Reply #469 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 in the foreground. Here also is one I prepared earlier:

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Neven

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Re: Arctic Image of the Day
« Reply #470 on: May 09, 2015, 07:16:06 PM »
Here's a nice image Jim Hunt posted on the ASIB:

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Rubikscube

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Re: Arctic Image of the Day
« Reply #471 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.

nukefix

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Re: Arctic Image of the Day
« Reply #472 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
« Last Edit: May 15, 2015, 05:48:29 PM by nukefix »

plinius

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Re: Arctic Image of the Day
« Reply #473 on: May 16, 2015, 08:18:29 PM »
due to the popularity of obuoy 9:


pretty nice lead in view. Buoy is on the move towards fram strait again.

helorime

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Re: Arctic Image of the Day
« Reply #474 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.  ::)
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Jim Hunt

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Re: Arctic Image of the Day
« Reply #475 on: May 17, 2015, 11:07:43 AM »
By way of comparison, here's one from last summer too!

Reality is merely an illusion, albeit a very persistent one - Albert Einstein

JayW

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Re: Arctic Image of the Day
« Reply #476 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
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plinius

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Re: Arctic Image of the Day
« Reply #477 on: May 23, 2015, 04:14:15 PM »
Sunset over the lake district...


pretty close to the alaska mainland, though.


P-maker

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Re: Arctic Image of the Day
« Reply #478 on: May 27, 2015, 10:14:10 AM »
JayW,

Quote
"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.

silkman

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Re: Arctic Image of the Day
« Reply #479 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.

oren

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Re: Arctic Image of the Day
« Reply #480 on: June 02, 2015, 05:44:03 PM »
Thanks. Beautiful and instructive picture.

Vergent

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Re: Arctic Image of the Day
« Reply #481 on: June 04, 2015, 10:26:00 PM »


Sublime!
« Last Edit: June 04, 2015, 10:33:32 PM by Vergent »

epiphyte

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Re: Arctic Image of the Day
« Reply #482 on: June 05, 2015, 07:07:23 AM »
Wow. Who took that?

Jim Pettit

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Vergent

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Re: Arctic Image of the Day
« Reply #484 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.


Espen

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Re: Arctic Image of the Day
« Reply #486 on: June 06, 2015, 05:20:47 PM »
Nice images of black ice, one of the magic wonders of nature ;) ;)
« Last Edit: June 06, 2015, 05:30:38 PM by Espen »
Have a ice day!

Yuha

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Re: Arctic Image of the Day
« Reply #487 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

A-Team

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Re: Arctic Image of the Day
« Reply #488 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!
« Last Edit: June 08, 2015, 03:54:46 AM by A-Team »

oren

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Re: Arctic Image of the Day
« Reply #489 on: June 08, 2015, 12:12:12 PM »
Wow. Just wow.

icefest

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Re: Arctic Image of the Day
« Reply #490 on: June 09, 2015, 01:12:49 PM »
That's beautiful a-team. Just plain, incredibly, beautiful.
Open other end.

plinius

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Re: Arctic Image of the Day
« Reply #491 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.

Rubikscube

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Re: Arctic Image of the Day
« Reply #492 on: June 11, 2015, 05:44:57 PM »
A spectacular picture from the O-buoy12 cam.

Siffy

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Re: Arctic Image of the Day
« Reply #493 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?

Rubikscube

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Re: Arctic Image of the Day
« Reply #494 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
« Last Edit: June 11, 2015, 06:13:22 PM by Rubikscube »

Siffy

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Re: Arctic Image of the Day
« Reply #495 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.



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.

plinius

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Re: Arctic Image of the Day
« Reply #496 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?

jdallen

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Re: Arctic Image of the Day
« Reply #497 on: June 15, 2015, 08:32:50 AM »
Here's what's currently being counted as "extent" in the North Baffin:

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Chuck Yokota

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Re: Arctic Image of the Day
« Reply #498 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.

A-Team

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Re: Arctic Image of the Day
« Reply #499 on: June 15, 2015, 09:25:21 PM »
Quote
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.