~If memory serves, not observed this consistent since 2007
~The only reason possible is warmer sea temperatures and thinner sea ice
may contribute to a stable High on the Pacific side of the North Pole quadrant, this I did see coming but only for a short time, not as long as a week or 2. It is a disaster for sea ice:
Given that the Atlantic front has collapsed, the flow of mainly pack sea ice will be dumped at a monstrous rate, especially with the North Atlantic Low ideally located. The CMC July 8 surface map also depicts something not common,
it is a cold surface High over sea ice, but very warm High aloft. It means an upper air heat source. The origins of this more than one week old anticyclone are equally interesting.....
....... It simply appeared (U. of Wyoming), on June 30 past. Likely formed in part by the flow of North Russian Urals hot air pumped by a similar if not the same Low pressure vicinity Novaya Zemlya.
This warm aloft High seems quite stable. A disaster for sea ice is in the making.... WD July 8 2020