Northern Wildfire Smoke May Cast Shadow On Arctic Warming

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The Arctic may get some temporary relief from global warming if the annual North American wildfire season intensifies, according to a new study. Smoke transported to the Arctic from northern forest fires may cool the surface for several weeks to months at a time, according to the most detailed analysis yet of how smoke influences the Arctic climate relative to the amount of snow and ice cover.

More... (http://www.sciencedaily.com/releases/2008/07/080724220104.htm)