~Today's 2018 JAXA extent is #1 lowest within historical record
~Since minima refreeze pattern almost exact melting in reverse
~There is no doubt that fresh less dense surface melt water is necessary for more rapid refreeze
Elsewhere October 21 CMC SST's are still quite warm, it takes -1.8 C water for sea water to freeze. Despite greater darkness 0 C waters North of East Siberian sea is astounding, the Atlantic front ice border remains stable and Bering Chukchi seas super warmed waters guaranty a further slower refreeze, which makes this map interesting:
to this 19 days remove sep 3 JAXA eerily similar map to today absent Fram Strait. The CAB is not refreezing well largely because of great cloud coverage and very warm sst's, which gives a surface temperature feedback loop of warming. These two factors made 2018 overall #1 lowest extent especially along with very thinned central CAB sea ice, made perfectly obvious by the presence of nearly permanent Arctic Ocean overcast with clouds and the lack of an anticyclone over the North Pole, which always happened in the past at the start of the long Arctic night. The biggest news is for larger populations further South, an abnormal winter awaits them.
WD October 21, last GIF October 24, 2018