Browsing the "permafrost" Tag

Unprecedented 2007 Arctic Fire Released a Year's Worth of Stored Carbon

August 8th, 2011 | by Michael Ricciardi

in 2007, the largest fire ever recorded in the Arctic swept across the Alaskan Northern Slope region, releasing an estimated 2.1 teragrams (2.3 million tons) of carbon into the atmosphere. Researchers estimate that the release of carbon was equivalent to a year's worth of carbon storage for the entire Arctic tundra biome. Climate warming in the Arctic may lead to a greater frequency of such large fires, putting permafrost at risk of thawing and releasing more


Arctic Affected by Climate Change More than Expected

May 5th, 2011 | by Joshua S Hill

• The last five years have been the warmest since 1880 when monitoring began • Tree ring data suggest that the summer temperatures over the past few decades have been the highest in 2000 years • Snow cover in May and June has decrease by close to 20% • The winter season in the Arctic has been shortened by almost two weeks • There is worry about the decrease in snow and ice cover in the Arctic that will decrease the amount of solar radiation reflected back out into the atmosphere • Warming is only expected to continue • Sea level rise by 2100 is expected to be between 0.9 and 1.6 metres, approximately twice what was predicted by the UN panel on climate change



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