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OnlinePoker

(5,702 posts)
Sun Mar 14, 2021, 09:15 AM Mar 2021

Maximum Arctic ice extent was probably reached on March 11th

Extent that day was 14.866 million sq km. This was the 8th lowest extent in the satellite record, which, considering it started the season with the 2nd lowest extent on record after 2012, was a good result. That 14.866 million sq km is 653,000 sq km below the 1981-2010 average highest extent, but 1.769 million below the highest extent ever in 1979 (the beginning of the satellite record). It has dropped 200,000 sq km in the last two days.

https://nsidc.org/arcticseaicenews/sea-ice-tools/

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Maximum Arctic ice extent was probably reached on March 11th (Original Post) OnlinePoker Mar 2021 OP
Seems a bit early to call it muriel_volestrangler Mar 2021 #1
On the 12th, it dropped 100,000 sq km from the 11th. OnlinePoker Mar 2021 #2

muriel_volestrangler

(101,146 posts)
1. Seems a bit early to call it
Sun Mar 14, 2021, 03:16 PM
Mar 2021

The value given in the graph (a moving average - 3 days, I believe) was higher on the 12th (14.750m sq km) than the 11th (14.735). Perhaps the individual day figure reached a peak on the day (for some reason, Chrome is wanting to "open an app" to view the .xlsx file, which I have set to default to LibreOffice, but I don't get that choice, so I can't check), but it still must be close for the moving average to have gone up.

OnlinePoker

(5,702 posts)
2. On the 12th, it dropped 100,000 sq km from the 11th.
Sun Mar 14, 2021, 04:03 PM
Mar 2021

I'm sure it's just wind blowing the ice around (blowing pretty strongly northward through the Bering Strait), but a lot of the missing ice this year, as has been noted in another thread here was in the Gulf of St Lawrence, which had another extremely low year. According to the Canadian Ice Services, it's at the 4th lowest in the satellite era.

https://iceweb1.cis.ec.gc.ca/Prod/page3.xhtml

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