Arctic Ice Great Leap Upward

arctic-ice-2017050

Recent posts on Arctic ice talked about an ice dance and seesaws in both Atlantic and Pacific basins.  But the fluctuations are over, and ice is forming fast.

In just six days Arctic ice extent grew 455k km2, now tied with 2016.  Ice extent in 2006 has fallen 490k behind at this date, and will go lower by month end.  Sea Ice Index from NASA@NSIDC also shows ice increasing, but still lags behind by ~400k km2.

Here are images of the great leap upward in the last week, from day 44 to day 50 (Feb. 19, 2017)

Ice growing in the Atlantic seas:

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Ice growing in the Pacific seas, and showing 2006 day 050 as a reference.

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The table below shows this year compared to the 11-year average and to 2006.

Region 2017050 Day 050
Average
2017-Ave. 2006050 2017-2006
 (0) Northern_Hemisphere 14743198 14851871 -108673 14251849 491349
 (1) Beaufort_Sea 1070445 1070111 334 1069711 734
 (2) Chukchi_Sea 966006 964552 1454 954122 11884
 (3) East_Siberian_Sea 1087137 1087038 99 1086081 1056
 (4) Laptev_Sea 897845 897835 10 897773 71
 (5) Kara_Sea 928805 918103 10702 902175 26631
 (6) Barents_Sea 508018 600373 -92355 488506 19512
 (7) Greenland_Sea 606503 635799 -29296 572979 33525
 (8) Baffin_Bay_Gulf_of_St._Lawrence 1517595 1446871 70725 1286797 230799
 (9) Canadian_Archipelago 853214 852984 230 852715 499
 (10) Hudson_Bay 1260903 1260391 512 1257433 3470
 (11) Central_Arctic 3238980 3214106 24874 3207097 31882
 (12) Bering_Sea 717887 771682 -53796 649938 67949
 (13) Baltic_Sea 52798 114323 -61525 93848 -41050
 (14) Sea_of_Okhotsk 957006 954616 2390 852621 104386
 (15) Yellow_Sea 15475 22222 -6747 13586 1889
 (16) Cook_Inlet 9671 11778 -2107 9530 141

The only deficit to 2006 is in the Baltic, while major surpluses are in Baffin, Bering and Okhotsk.  2017 is slightly below average in Barents, Bering and the Baltic, partly offset by being above average in Baffin and Central Arctic.

 

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