Begin maart 2017 werd een recordlaag maximum bereikt. Daarna bleef de ijsbedekking t/m juli laag vergeleken met de afgelopen jaren. In augustus en september was de afname van het zeeijs echter vrij laag, waardoor het minimum in september hoger lag dan in 2016 en 2015 en nog een aantal jaren.
De dagelijks minimum ijsbedekking die op 13 september 2017 werd bereikt, was de op 7 na laagste sinds metingen zijn begonnen in 1979, en het gemiddelde van september 2017 was de op 6 na laagste voor alle septembermaanden.
Zie bron van het bericht hieronder voor meer info en afbeeldingen.
Bron: http://nsidc.org/arcticseaicenews/2017/ ... september/
Arctic sea ice 2017: Tapping the brakes in September
October 5, 2017
After setting a record low seasonal maximum in early March, Arctic sea ice extent continued to track low through July. However, the rate of ice loss slowed in August and September. The daily minimum extent, reached on September 13, was the eighth lowest on record, while the monthly average extent was seventh lowest. In Antarctica, sea ice extent may have reached its annual winter maximum.
Overview of conditions
Arctic sea ice extent for September 2017 averaged 4.87 million square kilometers (1.88 million square miles), the seventh lowest in the 1979 to 2017 satellite record. This was 1.67 million square kilometers (645,000 square miles) below the 1981 to 2010 average, and 1.24 million square kilometers (479,000 square miles) above the record low September set in 2012.
After reaching the minimum on September 13 (eighth lowest on record), extent initially increased slowly (about 20,000 square kilometers, or 8,000 square miles, per day). However, starting September 26 and persisting through the end of the month, ice growth rates increased to about 60,000 square kilometers (23,000 square miles) per day. During the second half of the month, extent increased in all sectors except in the Beaufort Sea, where some local ice retreat persisted. The most rapid growth occurred along the Siberian side of the Arctic Ocean, where the ice edge advanced as much as 150 kilometers (90 miles) over the latter half of September. At the end of September, the ice edge in the Beaufort and Chukchi Seas remained considerably further north than is typical.
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