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Author Topic: The Rammb Slider Thread  (Read 62007 times)

JayW

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Re: The Rammb Slider Thread
« Reply #250 on: April 29, 2020, 12:17:34 PM »
A beautiful example of how you can spot fresh snow via M10 Band.

The location is between Greenland and Svalbard. 20 frames. Click to play.
It also tells us something about the existing snowpack not being being fresh, and having potentially seen *some* above freezing temps. 
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JayW

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Re: The Rammb Slider Thread
« Reply #251 on: May 01, 2020, 12:13:36 PM »
Lots of clouds over the ESS, but glimpses show a little fresh snow in areas, but it appears to me that much of the existing snowcover isn't all that impressive.

Band M8. Needs click
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JayW

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Re: The Rammb Slider Thread
« Reply #252 on: May 06, 2020, 12:19:40 PM »
VIIRS band M8 indicating a change in snow characteristics stretching from just north of Wrangel Island to Banks island.  It occurs just south of a storm track so my feeling is that's it's due to precipitation.  It coincides with the AMSR2 concentration data from Bremen. Second attachment.
Click to run. Contrast boosted for detail.

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blumenkraft

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Re: The Rammb Slider Thread
« Reply #253 on: May 12, 2020, 09:04:20 AM »
Surface melt over ESS. (M8 band)

Siberia on the left, Alaska bottom right.

Click to play.

JayW

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Re: The Rammb Slider Thread
« Reply #254 on: May 16, 2020, 01:34:57 PM »
Southern Chukchi, 100 hours. Band I1.
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Re: The Rammb Slider Thread
« Reply #255 on: May 16, 2020, 04:39:16 PM »
This is a GIF of a giant lead developing north of Ellesmere Ø (ooops) CAA, Band I1 (Red/Visible)

Click to play
« Last Edit: May 16, 2020, 09:40:20 PM by blumenkraft »

uniquorn

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Re: The Rammb Slider Thread
« Reply #256 on: May 16, 2020, 11:52:26 PM »
eddies south of the FJL- Svalbard gap, https://col.st/tvlWA  click to play

JayW

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Re: The Rammb Slider Thread
« Reply #257 on: May 17, 2020, 12:24:03 PM »
Shot centered a roughly 68°N, 154°E.   4 day change.  Kolyma river in the lower left can be seen thawing, might start spilling out the delta and onto the fast ice soon.  One can also see several "kettle ponds?" melting out, as well as some reduction in snowcover.
Link to location.
https://rammb-slider.cira.colostate.edu/?sat=jpss&z=5&im=14&ts=1&st=0&et=0&speed=130&motion=loop&map=0&lat=1&opacity%5B0%5D=1&hidden%5B0%5D=0&pause=20200517030756&slider=-1&hide_controls=1&mouse_draw=0&follow_feature=0&follow_hide=0&s=rammb-slider&sec=northern_hemisphere&p%5B0%5D=eumetsat_natural_color&x=11169.013671875&y=19222.083984375

Requires a click.
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JayW

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Re: The Rammb Slider Thread
« Reply #258 on: May 23, 2020, 01:31:17 PM »
Just noticing now that the RAMMB added a bunch of awesome RGB composites after seeing some of blumenkraft's posts.

Beaufort is responding to easterly winds.  Should open up nicely over the next 3 days.
Band M8 showing quite varied snow quality, mostly not very fresh.  You can also see the warm surging up north, in the last frames.  Floes look pretty small, except maybe the ones near Banks island, and even those look a bit dodgy.
A short 10 loop, contrast boosted. Click to run.
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Re: The Rammb Slider Thread
« Reply #259 on: May 31, 2020, 10:24:51 AM »
This is near the north pole.

One cloud, snow in the north, rain in the south.

Click to play.

JayW

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JayW

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Re: The Rammb Slider Thread
« Reply #261 on: June 12, 2020, 12:52:50 AM »
Near shore ice in the Laptev has turned quite the shade of blue on snowmelt RGB.   
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Re: The Rammb Slider Thread
« Reply #262 on: June 15, 2020, 02:51:21 AM »
Lena river outlet in the upper right.  These look like thunderstorms bubbling up and moving towards the arctic shores.  Three also a line of likely thunderstorms in my opinion, associated with a front moving across the Lena.  Hopefully we get some clearing afterward, and are able to see the discharge.
Click to run.
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Re: The Rammb Slider Thread
« Reply #263 on: June 15, 2020, 01:18:02 PM »
Lots of rain all over the place. Click to play.

JayW

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Re: The Rammb Slider Thread
« Reply #264 on: June 23, 2020, 11:37:57 AM »
I sent an email to the RAMMB webmaster about imagery not updating the last 2-3 days, hopefully there's a response, or things start updating again.

I did find a neat blog post about the new RGB bands which gives some information about them.  The importance of band M8, which we figured out last season is discussed.

http://rammb.cira.colostate.edu/projects/npp/blog/
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Re: The Rammb Slider Thread
« Reply #265 on: June 24, 2020, 08:40:34 AM »
Thanks, Jay! :)

It's working again!

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Re: The Rammb Slider Thread
« Reply #266 on: June 24, 2020, 09:23:16 AM »
Holy smokes...  :-\

Click to play.

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Re: The Rammb Slider Thread
« Reply #267 on: June 25, 2020, 05:29:17 AM »
Thanks, Jay! :)

It's working again!
Correlation may not be causation.   :)  but maybe my reminder helped, I didn't get a response, so who knows.

A look at the current around Utqiagvik.
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Re: The Rammb Slider Thread
« Reply #268 on: June 25, 2020, 12:36:16 PM »
24 hour loop.  The big storm dropped little snow, some just to the North American side of the pole, and the Beaufort might have received a dusting.  Mostly rain however in my humble opinion.  One can see the cyclonic curvature of the rain bands in the latest AMSR2 microwave shot. 2nd attachment

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« Last Edit: June 30, 2020, 12:17:16 AM by JayW »
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Re: The Rammb Slider Thread
« Reply #270 on: June 29, 2020, 06:03:17 PM »
Breathtaking! This low cloud creeping over Lincoln like an alien life form. Click to be amazed.

Ah, and as far as the Snow/Ice band is concerned, this is all bloody water down there.

uniquorn

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Re: The Rammb Slider Thread
« Reply #271 on: June 30, 2020, 11:57:02 PM »
jay, bl, If you have time, I'm struggling to get a good quality rammb of the eddies around the yermak plateau.

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Re: The Rammb Slider Thread
« Reply #272 on: July 01, 2020, 01:38:59 AM »
jay, bl, If you have time, I'm struggling to get a good quality rammb of the eddies around the yermak plateau.

Today was the only day it was really clear enough, I'll make another tomorrow if it is clear again. I used band I2. Let me know if you want anything adjusted.
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Re: The Rammb Slider Thread
« Reply #273 on: July 01, 2020, 10:57:24 AM »
RAMMB-SLIDER not updating. This is the last snapshot.

It looks like a software problem that caused something to crashed to me.

IIRC it was the same last time it stopped updating but not 100% sure about that. Let's observe this. It could be useful information for the RAMMB developers.

Edit: The I bands are going until 22:11:10 UTC. Geo-Color goes until 17:06:46 UTC. hmmmm
« Last Edit: July 01, 2020, 11:06:46 AM by blumenkraft »

uniquorn

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Re: The Rammb Slider Thread
« Reply #274 on: July 01, 2020, 11:33:16 AM »
thanks. Yes please for tomorrow if it's not cloudy. 5deg in shot is good for alignment.

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Re: The Rammb Slider Thread
« Reply #275 on: July 03, 2020, 01:40:50 PM »
Still not updating and my emails haven't been responded to.   Frustrating that it seems like like care is paid to the polar orbiting satellites.  Perhaps some other members could email the webmaster. Preferably someone with an email from a university orvthe like, as that might elicit a response.   
Thanks
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Re: The Rammb Slider Thread
« Reply #276 on: July 04, 2020, 04:31:20 PM »
Day&Night band (nothing else) updating again but has issues.

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Re: The Rammb Slider Thread
« Reply #277 on: July 06, 2020, 11:32:03 AM »
Ok, looks like everything is updating again. Nice!

JayW

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Re: The Rammb Slider Thread
« Reply #278 on: July 10, 2020, 01:16:56 AM »
Hopefully we get some reliable imagery, been frustrating.
M'Clure Strait/Parry channel, click to run.

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Re: The Rammb Slider Thread
« Reply #279 on: July 10, 2020, 12:24:57 PM »
Fjords and sounds south of Nansen sound appear to be breaking up.
Most recent image.
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Re: The Rammb Slider Thread
« Reply #280 on: July 11, 2020, 03:26:28 AM »
More CAA, lots of areas starting to break up. Tides doing some work.
Click it
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Re: The Rammb Slider Thread
« Reply #281 on: July 11, 2020, 06:00:42 PM »
Amazing animation!

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Re: The Rammb Slider Thread
« Reply #282 on: July 11, 2020, 06:50:44 PM »
Amazing animation!

Agreed! Thanks, Jay.
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JayW

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Re: The Rammb Slider Thread
« Reply #283 on: July 13, 2020, 12:11:15 AM »
Whole site is down, bummer, guess it's not manned on weekends.  My guess it comes back on around 5z tomorrow.
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Re: The Rammb Slider Thread
« Reply #284 on: July 13, 2020, 10:42:53 AM »
For Uniquorn: Bottomfast sea ice.

JayW

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Re: The Rammb Slider Thread
« Reply #285 on: July 14, 2020, 12:19:01 PM »
Well, I give up.  I sent the last email I will to the RAMMB webmaster.  Is been two weeks of either none, or basically unusable imagery.  I'll make one last plea to anyone in the academic community to please reach out, and see if there's any plan to continue offering polar satellite imagery.  It's experimental, so there was never a guarantee that it would be maintained.  Shitty day night imagery is of little value to me.
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Re: The Rammb Slider Thread
« Reply #286 on: July 14, 2020, 12:24:20 PM »
I tried that too.

It would be awful losing this tool.

 :'(

JayW

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Re: The Rammb Slider Thread
« Reply #287 on: July 14, 2020, 09:01:34 PM »
I tried that too.

It would be awful losing this tool.

 :'(

Good and bad news.  The bad is, there still issues, but it's being worked on.  But some is updating.
   
The response.
Quote
Regarding the JPSS imagery, we have multiple issues that have been causing the sporadic data lately. There seems to be a new bottleneck somewhere upstream from CIRA that we haven't yet been able to getto the bottom of, which is leading to us not getting all the imagery we normally do. Then, this past weekend, there was a power outage in one of our server rooms that took everything down. While the power outage issues have been resolved, one of my colleagues is hard at work trying to get the upstream data feed working as well as it had been before.
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Re: The Rammb Slider Thread
« Reply #288 on: July 14, 2020, 09:40:45 PM »
Well, i for one take that for an answer and am very glad! Thanks, Jay for letting us know.

JayW

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Re: The Rammb Slider Thread
« Reply #289 on: July 15, 2020, 04:58:15 AM »
Belcher channel/penny Strait area.  I boosted contrast to help see the rifting in the lower left.
Click
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JayW

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Re: The Rammb Slider Thread
« Reply #290 on: July 18, 2020, 08:14:17 AM »
50 hour loop day night band (only one updating currently...) Laptev nibbling.

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JayW

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Re: The Rammb Slider Thread
« Reply #291 on: July 20, 2020, 09:33:30 AM »
Northern ESS/Chukchi. 84 hours. Needs click
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JayW

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Re: The Rammb Slider Thread
« Reply #292 on: July 22, 2020, 01:38:07 AM »
Beaufort doing what the Beaufort does, pulverizes.
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Re: The Rammb Slider Thread
« Reply #293 on: July 25, 2020, 06:55:21 PM »
Just another GIF of the Nares tides. I know, i've posted them a lot already, but i can't help but being fascinated by them.

A tiny bit of export happened!

Stills not skipped, BIG FILE, click to play.

JayW

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Re: The Rammb Slider Thread
« Reply #294 on: July 27, 2020, 05:57:33 AM »
A little snow still seen north of the storm, but a lot of dark red elsewhere. 
Click
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Re: The Rammb Slider Thread
« Reply #295 on: July 29, 2020, 10:08:48 AM »
Some tidal action in the north of Svalbard. Click.

JayW

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Re: The Rammb Slider Thread
« Reply #296 on: July 31, 2020, 02:00:52 AM »
Center of the Beaufort storm really cleared out today.
Click it.
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JayW

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Re: The Rammb Slider Thread
« Reply #298 on: October 21, 2020, 07:41:47 AM »
Longwave IR shows neat clouds streaming off the open leads north of the CAA.
Large gif click to run
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uniquorn

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Re: The Rammb Slider Thread
« Reply #299 on: October 21, 2020, 11:23:10 AM »
Nice. Makes me wonder if heat loss would have been visible like that in previous years with a drier atmosphere.