Facts About the Arctic in December 2025

The latest Alfred Wegener Institute sea ice concentration map shows that the Pacific side of the Central Arctic Basin is now almost completely refrozen:

On the Atlantic side of the Arctic the Kara Sea is rapidly refreezing:

However, sea ice extent in the Barents Sea and Baffin Bay is currently lowest for the date in the AMSR2 record:

Pan Arctic JAXA/ViSHOP extent is currently lowest for the date in the satellite era:

Looking at sea ice volume next, at the end of November PIOMAS volume was 9.20 thousand km³, lowest for the date (in the satellite era).

Here’s the associated sea ice thickness map:

Here too is the Alfred Wegener Institute’s CryoSat-2/Sentinel 3/SMOS Arctic sea ice thickness map at the end of November:

As you can see, the “measured” data suggests that sea ice in the central Arctic is thicker than the PIOMAS model shows:

Watch this space!

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