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Arctic and Southern Ocean Sea Ice Concentrations, Version 1

Published by NSIDC;NOAA | National Aeronautics and Space Administration | Metadata Last Checked: October 28, 2025 | Last Modified: 2025-09-10
This data set provides monthly sea ice concentration for the Arctic from 1901 to 1995 and for the Southern Oceans from 1973 to 1990 on a standard 1-degree grid (cylindrical projection) to provide a relatively uniform set of sea ice extent for all longitudes. The data are in ASCII format and are available via FTP.

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