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U.S. National Ice Center Arctic and Antarctic Sea Ice Charts in SIGRID-3 Format, Version 1

Published by NSIDC | National Aeronautics and Space Administration | Metadata Last Checked: October 11, 2025 | Last Modified: 2025-09-11
This data set provides total sea ice concentration, partial concentration, stage of development, and ice form as defined by the World Meteorological Organization in SIGRID-3 shapefiles. The data are from the U.S. National Ice Center (USNIC) and span 2003 to the present.

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