AFTER Switchover sea ice doomed by warm Highs

 ~Reminiscent of 2007,  any anticyclone lingering over the Arctic Ocean means rapid melting

~Remarkable weighted temperature differences between Low and High pressures are already in place

CMC June 6 2021 700 mb,  close enough to 600 mb ,  temperatures within all Arctic Lows are significantly colder than at centre of anticyclones, of which a remnant of the once persistent High over the basin Gyre is hanging on.  But the switchover id definitely done,  disrupting the transpolar ice stream,  

NASA EOSDIS May 31 June 6 2021,  one should not underestimate this smaller High pressure,  either

for melting or moving sea ice.  If the High remained over the Arctic Gyre,  it would have been even more devastating,  circa 2007.     Notwithstanding clouds,  an enormous amount of open water occurred in the Beaufort sea area in a few days,  very early in the melt season,  thinner sea ice,  likely present at extent maxima, has no chance to  last long against the sun.  Note the rapid melting of snow Northern Yukon and NWT with mainly lake ice remaining. WD June 7 2021