On Sun, 5 Jan 2014 10:52:52 +0000
John Hall wrote:


What might be helpful as a predictive tool would be to know precisely
where the SSW began, but unfortunately the NOAA graphs don't tell you
that. They merely give the average (I assume) temperature for the
whole Arctic region (strictly speaking for north of 65N, but that
near enough corresponds to the Arctic Circle).

What seems to be happening is a split in the Polar vortex with one lobe
extending into North America and the other into Russia. Whether this is
typical of how an SSW develops, I'm sorry to say that I've no idea.

--
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'Do your bit for climate change this holiday period by restricting your
intake at festive mealtimes to four Brussels sprouts or less.'
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