Delivery of new Suomi National Polar-orbiting Partnership (Suomi NPP) satellite observations will cease on November 2, 2026. Data users should transition now to alternative products from NOAA-21 and NOAA-20.Suomi NPP data announcement
Description
This data set is retired and no longer available for download. We recommend using the <a href="https://nsidc.org/data/nsidc-0081">newest version of Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations</a> data set as an alternative. This data set provides a Near-Real-Time (NRT) map of sea ice concentrations for both the Northern and Southern Hemispheres.
Version Description
June 2016
Starting on 1 April 2016, sea ice concentration fields are computed using F18 data.
March 2015
New smaller pole hole mask used: SSMIS Pole Hole
New spurious ice masks: NIC Valid Ice Masks
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.
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Maslanik, J., & Stroeve, J. (1999). Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 1 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/U8C09DWVX9LM Date Accessed: 2026-10-05
@misc{maslanik_stroeve_1999,
title={Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 1},
url={http://nsidc.org/data/NSIDC-0081/versions/1},
DOI={10.5067/U8C09DWVX9LM},
publisher={NASA National Snow and Ice Data Center Distributed Active Archive Center},
author={Maslanik, Jim and Stroeve, Julienne},
year={1999},
}
Maslanik, J., & Stroeve, J. (1999). Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 1 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/U8C09DWVX9LM Date Accessed: 2026-10-05
Maslanik, Jim, and Julienne Stroeve. “Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 1.” NASA National Snow and Ice Data Center Distributed Active Archive Center, 1999, https://doi.org/10.5067/U8C09DWVX9LM. Date Accessed: 2026-10-05
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