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Last updated on April 19, 2014 at 13:20 EDT

Arctic Sea Ice From March To September 2011

October 7, 2011

This video shows Arctic sea ice from March 7, 2011, to Sept. 9, 2011, ending with a comparison of the 30-year average minimum extent (in yellow) and the Northwest Passage (shown in red). Credit: NASA’s Goddard Space Flight Center