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Friday, September 21, 2012

Arctic sea ice reaches new low, shattering record set just 3 weeks ago




New sea ice is finally starting to form again in the Arctic, scientists reported Wednesday, but not before reaching another record low last Sunday.

"We are now in uncharted territory," Mark Serreze, director of the National Snow and Ice Data Center, said in a statement announcing the record low of 1.32 million square miles -- nearly half the average extent from 1979 to 2010. The extent has been tracked by satellite since 1979.

"While we’ve long known that as the planet warms up, changes would be seen first and be most pronounced in the Arctic," he added, "few of us were prepared for how rapidly the changes would actually occur."

Many experts expect the Arctic to be free of sea ice in summer at some point between 2015 and 2050.

"Recent climate models suggest that ice-free conditions may happen before 2050," noted center scientist Julienne Stroeve. But she added the caveat that the recent sudden rate of decline "remains faster than many of the models are able to capture."

Serreze told NBC News he's figuring on 2030, calling it "a pretty aggressive estimate."

The sea ice extent numbers come after the center reported last month that the summer sea ice on Aug. 26 had broken the previous record low set in 2007 of 1.61 million square miles. On Aug. 26 the sea ice extent was 1.58 million square miles, it said.

"We're smashing a record that smashed a record," center scientist Walt Meier said.

World News

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