In a recent Bioscience paper, an international team of scientists warned that the twice as much carbon is locked up in the world's permafrost regions than previously thought. The researchers now estimate the world's high-latitude carbon inventory to be more than 1500 billion tonnes -equivalent to twice the current amount of CO_2 currently in the world's atmosphere.rnAs frozen organic matter thaws and decomposes, it will release its heavy load of carbon into the atmosphere in the form of carbon dioxide (CO_2) and methane (CH_4).
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