Arctic Ice Plentiful Mid May 2023

The image above shows 2023 Arctic ice extents from Mid April (day 106) to Mid May (day 135). As usual, the LIFO pattern is observed: ice that is Last In is the First Out.  The Pacific basins of Okhotsk (top left) and Bering (bottom left) rapidly turn to open water.  Baffin Bay (lower right) melts more slowly. Barents Sea (top center loses ice extent steadily.  Note Hudson Bay (bottom) keeps its ice, and Canadian Archipelago (lower center) retains most of its ice. On the left center, the Eurasian coastline remains frozen.

The graph below shows 2023 compared to 17 year average and some recent years for this time period.

Firstly, on average this period shows ice declining 1.44 M km2 down to 12.68M km2,  Note that  2023 matched the average in April, then retained more ice than usual during first two weeks of May. Sea Ice Index (SII) was close to MASIE throughout..  The other years, including 2007, were ~300k km2 lower than average.

Region 2023135 Day 135 Average 2023-Ave. 2007135 2023-2007
 (0) Northern_Hemisphere 12771477 12677903 93574 12431928 339549
 (1) Beaufort_Sea 1050531 1046418 4113 1057649 -7118
 (2) Chukchi_Sea 943942 926464 17478 953491 -9549
 (3) East_Siberian_Sea 1085822 1081321 4501 1075314 10508
 (4) Laptev_Sea 897060 881069 15991 828738 68322
 (5) Kara_Sea 919027 879799 39228 876053 42974
 (6) Barents_Sea 407569 418431 -10862 351553 56016
 (7) Greenland_Sea 730714 619664 111050 564865 165849
 (8) Baffin_Bay_Gulf_of_St._Lawrence 979333 1076523 -97190 1018780 -39447
 (9) Canadian_Archipelago 841610 839708 1902 830604 11006
 (10) Hudson_Bay 1153016 1186552 -33536 1167310 -14294
 (11) Central_Arctic 3247995 3223255 24740 3234305 13690
 (12) Bering_Sea 296036 301878 -5842 298268 -2231
 (13) Baltic_Sea 6134 7668 -1534 6368 -234
(14) Sea_of_Okhotsk 211027 186778 24249 164833 46194

The table shows the distribution of ice in the Arctic basins.  The main deficits to average are Baffin and Hudson Bays, more than offset by surpluses in Kara and Greenland Seas. Most other regions are surplus with a few slightly negative.

Resources:  Climate Compilation II Arctic Sea Ice

2 comments

  1. HiFast · 10 Days Ago

    Reblogged this on Climate Collections.

    Like

  2. Pingback: Arctic Ice Plentiful Mid May 2023 - Climate- Science.press

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