Tuesday, February 7, 2017

Smaller southwards bound Cold Temperature North Pole Vortex bends Jet Stream Northwards

~There is a windy reason why very cold air matters.
~Apparent single  near North Pole -30 C 700 mb cold zone in the entire Polar vortex not typical.

   CMC February 8, 2017 700 and 250 mb chart,  the 700 mb chart identifies the coldest zones,  where the atmosphere is densest and influences Global Circulation. On the Russian side, the coldest air is beyond the limits of this map further Southwards (at about -25 C at center).    The 250 mb chart (with blue arrows),   highlights the jet stream,  a segment of which is very unusually to the West of North Greenland.  The coldest air of this world,  I call it the Cold Temperature North Pole (CTNP),  is hovering over center of the Arctic Archipelago, 2 more vortices,  one over Newfoundland the other South Central Russia,  represent tonights outlook of the entire Polar Vortex.  Note the counterclockwise circulation around the 700 mb coldest air zones  (close enough to 600 mb, which is the approximate mean height representing the average temperature of the entire troposphere).    The Newfoundland one is steering the jet Stream Northwards as well,  as we know,  yet another Atlantic big Cyclone will penetrate the Arctic Ocean but for these reasons in a few days.  The coldest air zones are smaller,  usually to the South of where they use to hang out.  Contrast this with an imagined  huge 600 mb cold zone,  spanning from Alaska to Greenland,   the Jet would steer further Eastwards not Northwards.  The smaller densest cold atmosphere vortices affect the weather to be wilder near them as well. A huge CTNP area,  as common in the past,  made weather fluctuate less, because smaller CTNP's move about quite a lot.  WD February 8,2017

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