As noted in a previous post, alarms were raised over slower than average Arctic refreezing in October. Those fears were laid to rest firstly when ice extents roared back in November, and now with the Arctic freezing fast in December. The image above shows the ice gains over the last two weeks, from Dec. 5 to 17, 2020. In November, 3.5 Wadhams of sea ice were added during the month. (The metric 1 Wadham = 1 M km2 comes from the professor’s predictions of an ice-free Arctic, meaning less than 1 M km2 extent). So far in December a further 1.9 Wadhams have been added with another two weeks to go in 2020.
The Russian shelf seas on the left filled with ice early on, and Chukchi left center bottom is now 96% frozen. On the CanAm side, Beaufort at the bottom center is iced over, Bering Sea bottom left…
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