Polar Bear Habitat in Canada within the first week of June sees an growth of crucial polynyas – Watts Up With That?

Reposted by Polar Bear Science

Published on June 8, 2021

Winds mainly cause the apparent “breaking up” of sea ice in late spring through the expansion of persistent polynya and bank ledges. This year, critical open water areas in Canada (important feeding areas for polar bears) are developing in most areas as in previous years, although there are large variations from year to year.

Several prominent polynes have also opened along the Russian coast and northeast Greenland: See the entire Arctic State on June 7, 2021 below, courtesy of NSIDC:

Below are sea ice maps for Canada from June 6, 2021 compared to others through 2013, around the same date from the Canadian Ice Service.

2021:

See the video below of sea ice in the Beaufort Sea, April 25 to May 17, 2021 (from NSIDC, June 8, 2021):

Compare the above with previous years around the same time.

2020

2019

2018

2017

2016

2015

2014 (June 17th is the next one I have in my archive for 2014)

2013

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