Permafrost melt under Arctic Ocean could release huge amounts of greenhouse gas methane

(Photo of Arctic Ocean from Flickr and photographer MarmotChaser)

News Update: If there’s anything scarier than carbon dioxide bringing our planet to a boiling point, it’s methane, which is 20 times more potent. Now comes word that massive methane deposits under the Arctic Ocean are starting to bubble up as water temperatures rise from global warming and the undersea permafrost melts. International researchers, working from a ship along the Siberian continental shelf, report finding intense concentrations of methane in several areas over thousands of square miles. The amount of methane under the seabed – likely there since the last ice age – is believed to exceed global coal reserves, and was thought to be contained by a “lid” of permafrost. But methane in the air and water has been measured by researchers and last week, for the first time, they reported seeing it bubbling up, suggesting that small holes have formed in the undersea permafrost. These are preliminary findings of the International Siberian Shelf Study 2008 and are being prepared for publication by the American Geophysical Union. (Source: The Independent UK )