News of the WeekGLOBAL WARMING

Arctic Summer Sea Ice Could Vanish Soon But Not Suddenly

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Science  27 Mar 2009:
Vol. 323, Issue 5922, pp. 1655
DOI: 10.1126/science.323.5922.1655

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After paring 23 climate models down to the best half-dozen, two researchers now say with new confidence that arctic summer ice will most likely disappear around 2037. But none of the select models predicts a tipping point--a sudden jump to an ice-free summer Arctic.