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Global warming may not be the culprit after all when it comes to Artic changes

Climate data can be difficult to analyze. Take for instance global temperature changes. Whereas the Northern Hemisphere has been warming, the Southern half of the planet is cooling. While Antarctic Ice is at near-record levels, the Northern Pole is warming at an unprecedented pace-- much faster than global warming models predict.

A new study published in the journal Nature identified a possible cause for this discrepancy. It identifies a natural, cyclical flow of atmospheric energy around the Arctic Circle. A team of researchers, led by Rune Graversen of Stockholm University, conclude this energy flow may be responsible for the majority of recent Arctic warming.

The study specifically rules out global warming or albedo changes from snow and ice loss as the cause, due to the "vertical structure" of the warming ... the observed warming has been much too weak near the ground, and too high in the stratosphere and upper troposphere.

This study follows hot on the heels of research by NASA, which identified "unusual winds" for rapid Arctic ice retreat. The wind patterns, set up by atmospheric conditions from the Arctic Oscillation, began rapidly pushing ice into the Transpolar Drift Stream, a current which quickly sped the ice into warmer waters.

A second NASA team, using data from the the GRACE (Gravity Recovery and Climate Experiment) satellite, recently concluded that changes in the Arctic Oscillation were "mostly decadal in nature", rather than driven by global warming.



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interesting as always
By TheDoc9 on 1/3/2008 4:28:22 PM , Rating: 2
Where's the Academy award winning movie about these studies from a well deserving Nobel Peace prize winner?




RE: interesting as always
By porkpie on 1/3/2008 6:12:45 PM , Rating: 3
Al Gore's too busy right now building the latest addition onto his 95,000 sf house. Maybe next year.


RE: interesting as always
By Misty Dingos on 1/4/2008 9:56:49 AM , Rating: 2
It was in the works but when the penguins from Antarctica froze to death and the polar bears all drowned it was cancelled.

A replacement event was in the works for a while. It was going to be called Global Warming Death Match. It would feature Al Gore versus a anti-global warming climatologist in a steel cage wrestling match. The winner would be allowed to present their side to the UN. The project had to be abandoned when it became impossible to find a Ultra-Super Heavyweight climatologist to fight Al.

If Al starts talking like Orson Wells I am going to get creeped out big time, because he starting to look like him.


RE: interesting as always
By marvdmartian on 1/7/2008 3:21:37 PM , Rating: 2
ROFLMAO @ your last line! :)

I'm of the opinion that any global warming that might be happening is caused solely by all the hot air (rhetoric) that Al Gore is spewing about global warming. It's really a catch-22.....the more he talks about it, the more he causes it, the more concerned he is about, which leads to his talking about it more!!


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