May 8 Arctic Ice A-OK

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.

Region 2022127 Day 127 Average 2022-Ave. 2007127 2022-2007
 (0) Northern_Hemisphere 13272388 13096082  176306  12954671 317717 
 (1) Beaufort_Sea 1053640 1059642  -6001  1056022 -2382 
 (2) Chukchi_Sea 959821 949409  10412  955497 4324 
 (3) East_Siberian_Sea 1087137 1085912  1225  1081248 5889 
 (4) Laptev_Sea 897845 892770  5075  870216 27628 
 (5) Kara_Sea 928813 897443  31370  883059 45754 
 (6) Barents_Sea 642899 476820  166079  430155 212745 
 (7) Greenland_Sea 732835 616488  116347  639861 92974 
 (8) Baffin_Bay_Gulf_of_St._Lawrence 1185073 1140285  44787  1076913 108159 
 (9) Canadian_Archipelago 854685 845807  8879  845091 9594 
 (10) Hudson_Bay 1216867 1212411  4456  1192270 24597 
 (11) Central_Arctic 3248013 3223344  24669  3241053 6960 
 (12) Bering_Sea 275935 401584 -125649  398914 -122980 
 (13) Baltic_Sea 14465 13264  1201  10416 4050 
 (14) Sea_of_Okhotsk 172221 278245  -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!

 

2 comments

  1. Pingback: May 8 Arctic Ice A-OK – Climate- Science.press
  2. HiFast · 12 Days Ago

    Reblogged this on Climate Collections.

    Like

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