When Does A Displaced Polar Vortex Become A Split Vortex?

By WUWT Regular “Just The Facts” As discussed last week, the Northern Stratospheric Polar Vortex appears to have been displaced in January and now it appears to be splitting into two discrete lobes, i.e. see the image above with two areas of blue / cold air descending within the funnels/lobes of the Polar Vortex at…

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