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VIIRS/NPP Sea Ice Extent 6-Min L2 Swath 375m NRT

Published by NASA/GSFC/EOS/ESDIS/LANCE MODIS | National Aeronautics and Space Administration | Catalog Last Checked: June 25, 2026 at 02:09 PM | Dataset Last Updated: June 23, 2026
The Visible Infrared Imager Radiometer Suite (VIIRS) Sea Ice Extent 6-Min L2 Swath 375m is Near Real Time(NRT) (short name VNP29_NRT) data set reports the location of sea ice cover derived from radiance data acquired by VIIRS. Following the approach used by MODIS, the algorithm assumes that sea ice is snow covered and can be detected using the Normalized Difference Snow Index (NDSI). The VIIRS instrument flies on board the Suomi National Polar-orbiting Partnership (S-NPP) satellite.

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