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Arctic Doom
10-17-2012, 08:42 PM
Post: #1
Arctic Doom
Tuesday, October 16, 2012
Albedo change in the Arctic threatens to cause runaway global warming
Mark Flanner et al. calculated in 2011 that snow and ice on the Northern Hemisphere had a combined cooling effect of 3.3 Watts per square meter (of which 2 W/sm relates to the snow cover on land and 1.3 W/sm to the sea ice).

This cooling effect is deminishing rapidly, as temperatures rise and snow and ice cover declines. Snow and ice on the Northern Hemisphere had already declined substantially over the years and was reflecting 0.45 watts less energy per square meter in 2011 than it did in 1979 (Flanner, 2011).

As discussed in Albedo change in the Arctic, Professor Peter Wadhams calculates that the loss of the Arctic sea ice cooling effect alone can be compared to the net global warming caused by people's emissions (1.66 W/sm, IPCC, 2007b).Rolleyes
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