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Researchers Predict Permafrost Thaw Will Intensify Climate Change More Quickly Than Previously Thought; Melting of Greenland Icesheet Could Drive More Water Than Previously Thought to North American Northeast

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An understanding of the rate of carbon release is necessary to estimate the strength of positive feedback to climate change, a likely consequence of permafrost thaw. Permafrost. Permafrost soils in boreal and Arctic ecosystems store almost twice as much carbon as is currently present in the atmosphere. —Ted Vogel et al.

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Study Finds East Siberian Arctic Shelf Showing Instability and Widespread Venting of the GHG Methane; Releases May Be Much Larger and Faster Than Anticipated

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Although the oceanic CH 4 flux should be revised, the current estimate is not alarmingly altering the contemporary global CH 4 budget. The East Siberian Arctic Shelf is a methane-rich area that is a shallow seaward extension of the Siberian tundra that was flooded during the Holocene transgression 7 to 15 thousand years ago.

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