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U.S. National Ice Center Arctic and Antarctic Sea Ice Concentration and Climatologies in Gridded Format, Version 1

Published by NSIDC | National Aeronautics and Space Administration | Catalog Last Checked: June 25, 2026 at 01:34 PM | Dataset Last Updated: June 23, 2026
Notice: Due to funding limitations, this data set was recently changed to a “Basic” Level of Service. Learn more about what this means for users and how you can share your story here: Level of Service Update for Data Products. Weekly sea ice concentration charts from the U.S. National Ice Center (USNIC) along with total ice concentration, multiyear ice concentration, first-year ice concentration, thin ice concentration, and fast ice extent. In addition, there are also period-of-record, 5-year and 10-year climatological averages.

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