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IPFS News Link • Climate Change

Arctic Sea Ice Collapse Beginning

07-15-2009 • arclein

Kwok and colleagues at NASA and the University of Washington, in Seattle, report that Arctic sea ice thinned dramatically between the winters of 2004 and 2008, with thin seasonal ice replacing thick, older ice as the dominant type for the first time on record. Using ICESat measurements, scientists found that overall Arctic sea ice thinned about 17.8 centimeters (7 inches) a year, for a total of 67 cm (2.2 feet) over four winters. The total area covered by the thicker, older, multi-year ice that survives one or more summers shrank by more than 40 percent.

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