Monthly Archives: September 2022

Facts About the Arctic in September 2022

As in previous years there is already a thread devoted to this year’s minimum extent. By way of a summary here are the end of August numbers for our favourite “high resolution” AMSR2 area and extent metrics:

Extent is currently near the top of the range of the last 10 years.

We have now reached the stage of the “melting season” when “refreezing” has started in the Central Arctic but melting at the periphery is outpacing it. However the Canadian Ice Service stage of development charts now show the arrival of new ice in the high latitudes of the Canadian Arctic Archipelago:

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The 2022 Arctic Sea Ice Minimum Extent

September has arrived and it’s time to start speculating about when and at what level this summer’s minimum Arctic sea ice extent will occur. Here’s a helpful summary of previous years’ JAXA AMSR2/AMSR-E extent minima courtesy of Zack Labe:

Here too is JAXA’s current graph of extent, including a selection of previous years:

JAXA extent on August 31st was 4.96 million km2, marginally below last year’s value of 4.99 million km2 on the same date.

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