This probably has a lot to do with the splitting of the Polar Vortex due to a sudden stratospheric warming event a while back. I'm grateful for a bit of winter, finally, in my neck of the European woods, but not too happy about the consequences for the Arctic. The cause of all this heat and ice being pushed away from the northern coast of Greenland is an atmospheric set-up that during summer we'd be referring to as a Reverse Dipole (low pressure over the Canadian side of the Arctic, high pressure over the Siberian side).
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