Sea Ice Extent (1979-2004)

At the top of the globe, this animation displays the September minimum sea ice extent for each year from 1979 - 2004. September is the month that normally has the least amount of sea ice. The red line indicates the 15% average sea ice extent during this time period.

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Keywords: 
arctic, concentrations, data, extent, global, ice, indicator,, ocean, polar, record, shrinking, climate, change