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Politics : The Exxon Free Environmental Thread -- Ignore unavailable to you. Want to Upgrade?

To: Maurice Winn who wrote (8308)	8/15/2011 8:19:15 AM
From: T L Comiskey	Respond to of 49017

A destabilization of the jet stream and its effects on climate is Exactly what has been cautioned against... ......................................................................................... Global Warming and Snow Storms in the US and Europe The global warming trend of climate change and the recent huge winter snow storms in the US and Europe are consistent, because both exist. A new line of inquiry by Overland et al. and by Petoukhov et al. suggests that global warming and the recent huge snow storms are actually causally linked. Here's why. The jet stream, which circulates the globe mostly west-to-east azimuthally with some meanders (see picture below), usually provides a "barrier" that contains the cold winter Arctic weather near the north pole. However, the jet stream sometimes destabilizes, so that the barrier becomes "broken" and thus no longer contains the cold Arctic weather. Now, with global warming, the Arctic has been heating up, with Arctic sea ice melting at an unprecedented rate. The causal connection proposed is that this additional Arctic heat contributes to the destabilization of the jet stream so that the barrier breaks more than it would under natural variation. The most visible result of Arctic weather leaking out to the south has been the huge snow storms in the US and Europe.