Arctic Ice Slight Deficit July 31, 2024

 

The graph above shows July daily ice extents for 2024 compared to 18 year averages, and some years of note.

The black line shows on average Arctic ice extents during July decline 2.7M km2 down to 6.9M Km2 by day 213.  2024  tracked a little higher than the 18-year average early in July, then slipped into deficit in the last 10 days.  SII was close to MASIE early in July, then diverged mid month showing up to 666k km2 lower until ending July ~300k km2 less extent than MASIE.  2023 was higher than average, while 2007 ended ~ 540k km2 in deficit to average.  2020 ice ended nearly 1 Wadham or 1M km2 in deficit.

Why is this important?  All the claims of global climate emergency depend on dangerously higher temperatures, lower sea ice, and rising sea levels.  The lack of additional warming prior to 2023 El Nino is documented in a post UAH June 2024: Oceans Lead Cool Down.

The lack of acceleration in sea levels along coastlines has been discussed also.  See Observed vs. Imagined Sea Levels 2023 Update.

Also, a longer term perspective is informative:

post-glacial_sea_levelThe table below shows the distribution of Sea Ice on day 213 across the Arctic Regions, on average, this year and 2007. At this point in the year, Bering and Okhotsk seas are open water and thus dropped from the table.

Region 2024213 Day 213 Ave. 2024-Ave. 2007213 2024-2007
 (0) Northern_Hemisphere 6634637 6882380 -247743 6344860 289777
 (1) Beaufort_Sea 717847 791600 -73754 760576 -42729
 (2) Chukchi_Sea 702720 534093 168628 382350 320370
 (3) East_Siberian_Sea 760894 740772 20122 445385 315509
 (4) Laptev_Sea 223615 368247 -144631 314382 -90767
 (5) Kara_Sea 136159 163171 -27012 239232 -103073
 (6) Barents_Sea 454 31406 -30952 23703 -23249
 (7) Greenland_Sea 237168 294526 -57358 324737 -87570
 (8) Baffin_Bay_Gulf_of_St._Lawrence 170245 145062 25183 94179 76066
 (9) Canadian_Archipelago 454695 540106 -85411 510063 -55368
 (10) Hudson_Bay 129434 133138 -3704 93655 35780
 (11) Central_Arctic 3098283 3138628 -40345 3154837 -56554

The overall deficit to average is 248k km2, (4%).  The major deficits are in Laptev, Beaufort and CAA (Canadian Archipelago), while Kara is the only region with a large surplus.

bathymetric_map_arctic_ocean

Illustration by Eleanor Lutz shows Earth’s seasonal climate changes. If played in full screen, the four corners present views from top, bottom and sides. It is a visual representation of scientific datasets measuring ice and snow extents.

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