Quote:
Originally Posted by NL03Scooby
I presume being stratospheric it's quite high up and probably impacts temperatures and pressures but through changeable weather at lower altitude... But I'm no expert so am stabbing in the dark here!
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Pretty much, pushes colder weather out from the poles. Forces the jetstream to take a more southerly route.
Before Nathan Rao and crew go all SNOWMAGEDDON again, the signs are its starting, along with a now negative AO, it looks like the early winter reports of warm start/cold finish are looking more likely. Some of the data being thrown about is very similar to Dec 2010.