http://nsidc.org/news/newsroom/PR_thawing-permafrost-cost-trillions
The National Snow and Ice Data Center (NSIDC) is part of the Cooperative Institute for Research in Environmental Sciences at the University of Colorado Boulder.
Greenhouse gas emissions from thawing Arctic permafrost could result in an additional $43 trillion in economic impacts by the end of the twenty-second century, according to a new study by researchers from the University of Cambridge and the National Snow and Ice Data Center (NSIDC). These extra impacts justify the need for urgent action to reduce emissions from thawing permafrost. The study was published today in the journal Nature Climate Change.
Permafrost or frozen ground, which contain about 1,700 gigatons of carbon in the form of frozen organic matter, have begun to thaw in response to Arctic warming over the past few decades. As the permafrost degrades, carbon dioxide and methane are released, amplifying the effects of emissions from human activity.