May 8 Arctic Ice A-OK

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My previous Arctic ice report was limited by technical difficulties, now resolved as shown by the animation above.  So, this update comes a week into May, with the animation covering the last three weeks from mid-April.   The dramatic melting in the Pacific basins of Bering and Okhotsk (left) sets them apart from the rest of Arctic Sea ice. As noted, before, those two basins are outside the Arctic circle, have no polar bears and are the first places to become open water in the Spring. Elsewhere sea ice persisted, actually growing in Barents and Greenland seas.

[The staff at National Ice Center were extremely helpful, as usual.  Their work is distinctive, valuable and deserving of your appreciation. 

See Support MASIE Arctic Ice Dataset]

The melting effect on NH total ice extents during this period is presented in the graph below.

The graph above shows ice extent mid-April through May 7 comparing 2022 MASIE reports with the 16-year average, other recent years and with SII.  2022 ice extents have tracked the average, going surplus for the last 10 days. Both 2021 and 2007 are well below average, on day 127 lower than 2022 by 318k km2 and 443k km2 respectively. The two green lines at the bottom show average and 2022 extents when Bering and Okhotsk ice are excluded.  On this basis 2022 Arctic ice was nearly 400k km2 in surplus on May 7, and prior to yesterday, the horizontal line shows little loss of ice extent elsewhere than in the Pacific.

Region2022127Day 127 Average2022-Ave.20071272022-2007
 (0) Northern_Hemisphere1327238813096082 176306 12954671317717 
 (1) Beaufort_Sea10536401059642 -6001 1056022-2382 
 (2) Chukchi_Sea959821949409 10412 9554974324 
 (3) East_Siberian_Sea10871371085912 1225 10812485889 
 (4) Laptev_Sea897845892770 5075 87021627628 
 (5) Kara_Sea928813897443 31370 88305945754 
 (6) Barents_Sea642899476820 166079 430155212745 
 (7) Greenland_Sea732835616488 116347 63986192974 
 (8) Baffin_Bay_Gulf_of_St._Lawrence11850731140285 44787 1076913108159 
 (9) Canadian_Archipelago854685845807 8879 8450919594 
 (10) Hudson_Bay12168671212411 4456 119227024597 
 (11) Central_Arctic32480133223344 24669 32410536960 
 (12) Bering_Sea275935401584-125649 398914-122980 
 (13) Baltic_Sea1446513264 1201 104164050 
 (14) Sea_of_Okhotsk172221278245 -106023 269684-97463 

The only deficits to average are in Bering and Okhotsk, more than offset by surpluses everywhere else, especially in Barents and Greenland seas, along with Kara and Baffin Bay.  At this point, overall NH sea ice is 88% of last March maximum (15.1M kim2).  All regions are well above 90% of their maxes, except for Barents (81%), Baffin Bay (66%), Bering (33%) and Okhotsk (20%).

April 1st Footnote:

It has been a long hard winter, requiring overtime efforts by Norwegian icebreakers like this one:

In addition, cold Spring temperatures led to unusual sightings of Northern creatures:

Not only Polar bears are flourishing!

via Science Matters

May 8, 2022

May 8 Arctic Ice A-OK | Science Matters (rclutz.com)