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Posted Fri Dec 5 2008: from Der Spiegel:
Point of No Return for the Arctic Climate?
...A new study completed by a team of US, Norwegian and German researchers may now provide some clues. Published in the scientific journal Geophysical Research Letters in November, the study posits that a dramatic change in atmospheric circulation patterns has taken place since the beginning of the decade, with centers of high pressure in winter shifting toward the north-east....Behind the complex language and impenetrable calculations upon which the study is based, however, is a frightening possibility: climate change in the Arctic could already have reached the point of no return. ... "In the case of Arctic Sea ice, we have already reached the point of no return," says the prominent American climate researcher James Hansen, director of the Goddard Institute for Space Studies at NASA.
[Read more stories about: anthropogenic change, climate impacts, global warming, arctic meltdown, tipping point]
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Goldie says: "Anybody who saw the news about the circumnavigable North Pole already knows this."
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'Doc Michael says:
The tipping point .... hath done toppled.

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