After concerns over lackluster ice recovery in October, November is seeing ice roaring back. The image above shows the last 3 weeks adding 3 M km2 of sea ice. (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) The Russian shelf seas on the left filled with ice early on. On the CanAm side, Beaufort at the bottom center is iced over, Canadian Archipelago (center right) is frozen, and Baffin Bay is filling from the north down. Hudson Bay (far right) first grew fast ice around the edges, and is now half iced over. A background post is reprinted below, showing that in just 23 days, 2020 has added 3.1 M km2, 50% more than an average 30-day November.
The graph above shows November Arctic ice extents for the 13-year average and some other notable…
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