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Saturday, February 23, 2013

1.5C Temperature Rise Could Melt Permafrost

1.5C Temperature Rise Could Melt Permafrost

Fiona Harvey, Guardian
A global temperature rise of 1.5C would be enough to start the melting of permafrost in Siberia, scientists warned on Thursday.Any widespread thaw in Siberia's permanently frozen ground could have severe consequences for climate change. Permafrost covers about 24% of the land surface of the northern hemisphere, and widespread melting could eventually trigger the release of hundreds of gigatonnes of carbon dioxide and methane, which would have a massive warming effect.http://www.guardian.co.uk/environment/2013/feb/21/temperature-rise-permafrost-melt
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