From polar bear science
Published April 22, 2021
Late April is the peak of the main feeding and mating season for polar bears, and there is ample sea ice habitat in the Arctic to do both.
Sea ice maps below. Compare the conditions for 2018 here; 2015 here; and 2014 here. The sea ice peak that year was apparently “uneventful,” according to the NSDIC, because it had nowhere near set a new low record.
NSIDC Masie chart for April 21, 2021, day 111.
SEA ICE CANADA
Ice thickness by region
Eastern Canadian Arctic, where brown is thick perennial ice and dark green is first year thick ice, for the week of April 19:
Hudson Bay and Davis Strait, where brown is thick perennial ice and dark green is first year thick ice, for the week of April 19:
Western Canadian Arctic, where brown is thick perennial ice and dark green is first year thick ice, for the week of April 19:
BEAUFORT AND CHUKCHI SEAS
Where brown is thick perennial ice and dark green thick first year ice for April 21:
BARENTE SEA, KARA SEA AND EAST GREENLAND
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