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Arctic sunshine cranks up threat from greenhouse gases

2013-02-12 15:00:00| Climate Ark Climate Change & Global Warming Newsfeed

New Scientist: IT'S a solar double whammy. Not only does sunlight melt Arctic ice, but it also speeds up the conversion of frozen organic matter into carbon dioxide. The amount of carbon in dead vegetation preserved in the far northern permafrost is estimated to be twice what the atmosphere holds as CO2. Global warming could allow this plant matter to decompose, releasing either CO2 or methane - both greenhouse gases. The extent of the risk remains uncertain because the release mechanisms are not clear. Rose...

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