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Stratospheric Warming ...


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#1
richard mann

Posted 18 November 2014 - 08:41 PM

richard mann

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Substantial strat warming over asia currently:
2vx2lmw.jpg


Doesn't stratospheric warming correlate basically with more strong cold at the surface. ?
 
What's the significance here with this idea in any case. ?


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#2
Chris

Posted 19 November 2014 - 08:41 AM

Chris

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My overly simplistic understanding and explanation -

 

In the winter there's a polar jet that keeps a frigid dome of air settled over the long night in the far north.  On occasion, a system or Rossby Wave will travel far enough north to warm the upper atmosphere at the polar jet.  The polar jet weakens or stops completely, allowing the frigid dome to escape to the mid-latitudes.