Author Topic: Study: Arctic Warming Rate Could Triple  (Read 1977 times)

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Offline NeverWinter

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Study: Arctic Warming Rate Could Triple
« on: June 11, 2008, 03:27:51 AM »
That, in turn, could quickly thaw permafrost, releasing CO2 and methane.

Rapid Arctic sea ice loss could triple the rate of warming over northern Alaska, Canada and Russia and trigger permafrost thawing that unleashes extremely potent greenhouse gases, according to a new study.

"Our study suggests that, if sea ice continues to contract rapidly over the next several years, Arctic land warming and permafrost thaw are likely to accelerate," lead author David Lawrence of the National Center for Atmospheric Research said in a statement.

"The loss of sea ice can trigger widespread changes that would be felt across the region," added co-author Andrew Slater, a scientist at the National Snow and Ice Data Center.

The image shows simulated autumn temperature trends during
rapid sea-ice loss. The accelerated warming signal (red to dark red)
reaches 900 miles inland. The image at right shows milder but still
substantial warming rates.

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