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Recommend Terra Daily - Extreme Melting on Greenland Ice Sheet (Email)

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TERRA DAILY
New York NY (SPX) Oct 26, 2011

http://www.terradaily.com/reports/Extreme_Melting_on_Greenland_Ice_Sheet_999.html

The Greenland ice sheet can experience extreme melting even when temperatures don't hit record highs, according to a new analysis by Dr. Marco Tedesco, assistant professor in the Department of Earth and Atmospheric Sciences at The City College of New York. His findings suggest that glaciers could undergo a self-amplifying cycle of melting and warming that would be difficult to halt.

"We are finding that even if you don't have record-breaking highs, as long as warm temperatures persist you can get record-breaking melting because of positive feedback mechanisms," said Professor Tedesco, who directs CCNY's Cryospheric Processes Laboratory and also serves on CUNY Graduate Center doctoral faculty.

Professor Tedesco and his team collected data for the analysis this past summer during a four-week expedition to the Jakobshavn Isbrae glacier in western Greenland. Their arrival preceded the onset of the melt season.


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