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Melting Arctic Permafrost Looms as Major Factor in Warming, Climate Change

2013-09-28 00:20:00| Climate Ark Climate Change & Global Warming Newsfeed

Wunderground: A heavyweight boxer in the climate change match is missing from the fifth climate assessment report released by the Intergovernmental Panel on Climate Change (IPCC) on Friday. Permafrost, which is frozen ground that doesn't melt during the summer, covers 24 percent of the land in the northern hemisphere. It also stores approximately 1.5 trillion tons of carbon twice the amount of carbon currently in the atmosphere. When the organic matter that makes up permafrost thaws, the carbon it contains...

Tags: change major factor warming

 

New Study on Permafrost

2013-07-30 13:31:00| Climate Ark Climate Change & Global Warming Newsfeed

EurekAlert: New research findings from the Centre for Permafrost (CENPERM) at the Department of Geosciences and Natural Resource Management, University of Copenhagen, document that permafrost during thawing may result in a substantial release of carbon dioxide into the atmosphere and that the future water content in the soil is crucial to predict the effect of permafrost thawing. The findings may lead to more accurate climate models in the future. The permafrost is thawing and thus contributes to the release...

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Researchers Take Closer Look at Link Between Permafrost Thaw and Greenhouse Gases

2013-07-29 21:32:00| Climate Ark Climate Change & Global Warming Newsfeed

Nature World News: In a new study published in the journal Nature Climate Change, researchers explain in greater detail than ever before how the thawing of the world's permafrost may result in a substantial release of carbon dioxide into the atmosphere, and that crucial in predicting the overall effect of the process is the soil's water content. Knowing this, the researchers argue, may lead to more accurate climate models in the future. Permafrost, soil or rock that remains frozen all year round, occurs where...

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Antarctica permafrost melt spurred by solar radiation boost

2013-07-26 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed

LA times: Accelerated melting of buried ice in a dry valley of Antarctica may be a harbinger for widespread thawing of permafrost at Earth's far latitudes as worldwide climate patterns change, according to a new study. The tenfold increase from ancient melt rates evident in a dry valley near McMurdo Bay over little more than a decade comes despite a local two-decade cooling trend. Cliff-face measurements of the buried ice in the four-mile-long Garwood Valley revealed melt rates that shifted from a creeping...

Tags: boost solar radiation antarctica

 

Antarcticas permafrost is melting

2013-07-25 23:27:00| Climate Ark Climate Change & Global Warming Newsfeed

Grist: Things are getting ugly on Earth`s underside. Antarctic permafrost, which had been weathering global warming far better than areas around the North Pole, is starting to give way. Scientists have recorded some of it melting at rates that are nearly comparable to those in the Arctic. Scientists used time-lapse photography and LiDAR to track the retreat of an Antarctic ice cliff over a little more than a decade. They reported Wednesday in the journal Scientific Reports that the cliff was "backwasting...

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