Arctic sea ice loss unprecedented in 1,450 years

23 Nov 2011 The recent loss of sea ice in the Arctic is greater than any natural variation in the past 1½ millennia, a Canadian study shows. In September, Germany's University of Bremen reported that sea ice had hit a record low, based on data from a Japanese sensor on NASA's Aqua satellite. The U.S. National Snow and Ice Data Center, using a different satellite data set, reported that the sea ice coverage in 2011 was the second-lowest on record, after the record set in 2007.
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