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Arctic Sea Ice Extent, Area, and Volume


ORH_wxman
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This September has seen the largest increase from the minimum on record with still 3 days to go in the month. It is also in contention for the largest net gain of ice in the month (Sept 1st to Sept 30th). 

 

So this has definitely been a pretty remarkable refreeze thus far. Should be a very warm autumn with all the latent heat release going on. 

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18 hours ago, bluewave said:

Here comes the annual October spike in Arctic Amplification as the refreeze releases heat back into the atmosphere under strong blocking.

Looks like Siberia will be the big winner in the warm Arctic very little cold for the continents pattern.

 

 

OCT.png

 

The arctic had almost no issues until the mid to late 1990's.

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16 hours ago, Bacon Strips said:

the odd looking warmth to continue.

it looks so weird being branched off like that. 

wheres Global Warmer been? long time no see.    he usually goes crazy over these things.

 

gfs_arctic_012_10m_wnd_2m_temp.gif

Lots of icepack getting destroyed, demolished, obliterated, who's going to give a play by play?

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9 hours ago, Sugarloaf1989 said:

Does this have any bearing on how fast next summer's melt may happen with such a late start the re-freeze. I guess that ice thickness overall would be less with a shorter winter season?

 

negative, as the same was expected to occur this summer...but never panned out.    As an unusually cold pattern this summer, made up for the unusually warm pattern over the arctic from January - March.

either way, I agree with Blue on how odd things have become with October so far.   Shows how quick just 15 days could throw a monkey-wrench into things.

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On 10/17/2016 at 3:55 PM, Sugarloaf1989 said:

Does this have any bearing on how fast next summer's melt may happen with such a late start the re-freeze. I guess that ice thickness overall would be less with a shorter winter season?

It probably doesn't help to have such warm temps the last month or two, but there's lots of other more important factors at play.

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another warmup in the arctic looking possible in the 4 to 7 day range... while at the same time, an unusual cool blast to hit the NE U.S. 

what was unusual about the October 1st to 15th pattern....was how it was warm in the U.S. the same time.   meaning it must of been unusually cool in another part of the globe at that time.  (didn't look at models then)

 

also...  yikes -

0PDNwr.jpg

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On 10/21/2016 at 3:35 PM, Bacon Strips said:

another warmup in the arctic looking possible in the 4 to 7 day range... while at the same time, an unusual cool blast to hit the NE U.S. 

what was unusual about the October 1st to 15th pattern....was how it was warm in the U.S. the same time.   meaning it must of been unusually cool in another part of the globe at that time.  (didn't look at models then)

 

I think the area in the former U.S.S.R has been pretty cold lately.

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30 minutes ago, forkyfork said:

IMO what's happening right now is just as wild as the 2012 min

Definitely agree. I think it will be particularly interesting to see the PIOMAS volume/thickness numbers for October. Although now we can get a glimpse at the CryoSat-2 season: http://www.cpom.ucl.ac.uk/csopr/seaice.html

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Is there a possibility of an inter-hemispheric temperature variability cycle coming into play here? Basically south pole warming and north pole cooling in the near future? May be a stupid question, but when you see weird stuff, is there a better time to ask a weird question?

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Dr. Cohen:

" One area to note on the North Atlantic side is in the Barents-Kara Seas, where negative sea ice anomalies have been growing. Recent research has shown that regional anomalies are important and the sea ice region most highly correlated with the winter AO is the Barents-Kara seas region where low Arctic sea ice favors a negative winter AO. Given that sea ice is running well below normal, this currently favors more extensive Eurasian snow cover in the coming weeks, followed by a strengthened Siberian high and a weakened polar vortex/negative AO this upcoming winter. "

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This just out (behind a paywall) . Timely for this fall's unusual arctic circulation. Note positive feedback between sea ice loss and circulation changes leading to increased heat transport to arctic.

On the atmospheric response experiment to a Blue Arctic Ocean

Tetsu Nakamura1,2,*, Koji Yamazaki1,2, Meiji Honda3, Jinro Ukita3, Ralf Jaiser4, Dörthe Handorf4 and Klaus Dethloff4

Abstract

We demonstrated atmospheric responses to a reduction in Arctic sea ice via simulations in which Arctic sea ice decreased stepwise from the present-day range to an ice-free range. In all cases, the tropospheric response exhibited a negative Arctic Oscillation (AO)-like pattern. An intensification of the climatological planetary-scale wave due to the present-day sea ice reduction on the Atlantic side of the Arctic Ocean induced stratospheric polar vortex weakening and the subsequent negative AO. Conversely, strong Arctic warming due to ice-free conditions across the entire Arctic Ocean induced a weakening of the tropospheric westerlies corresponding to a negative AO without troposphere-stratosphere coupling, for which the planetary-scale wave response to a surface heat source extending to the Pacific side of the Arctic Ocean was responsible. Because the resultant negative AO-like response was accompanied by secondary circulation in the meridional plane, atmospheric heat transport into the Arctic increased, accelerating the Arctic amplification.

http://onlinelibrary.wiley.com/doi/10.1002/2016GL070526/abstract

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NSIDC extent for Oct 29 from Mohyu blog. (1000 of square km)

              Arctic      Antarctic     Total
2015      8444       17748       26192
2016      7111       16620       23731

2016 has 2461 x 1000 sq km or 9.4% less sea ice than this date last year. This is roughly 0.5% of the earth's surface.

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