Delivery of Suomi National Polar-orbiting Partnership (Suomi NPP) satellite data products will cease on November 1, 2026. Data users should transition now to alternative products from NOAA-21 and NOAA-20.Suomi NPP data announcement
Description
This data set provides a Near-Real-Time (NRT) map of sea ice concentrations for both the Northern and Southern Hemispheres.
As of 18 June 2026, this data set is retired and no longer available for download. Forward processing for this product ceased in January 2026. We recommend using the research quality AMSR2 Daily Polar Gridded Sea Ice Concentrations (https://doi.org/10.5067/W13AO54SS7CW) or Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data (https://doi.org/10.5067/MPYG15WAA4WX) data sets as an alternative.
Version Description
Version update reflects the conversion of the data set from binary to netCDF.
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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Meier, W., Stewart, J., Wilcox, H., Hardman, M., & Scott, D. (2021). Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 2 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/YTTHO2FJQ97K Date Accessed: 2026-09-27
@misc{meier_stewart_wilcox_hardman_scott_2021,
title={Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 2},
url={http://nsidc.org/data/NSIDC-0081/versions/2},
DOI={10.5067/YTTHO2FJQ97K},
publisher={NASA National Snow and Ice Data Center Distributed Active Archive Center},
author={Meier, Walter and Stewart, J and Wilcox, Hannah and Hardman, Molly and Scott, Donna},
year={2021},
}
Meier, W., Stewart, J., Wilcox, H., Hardman, M., & Scott, D. (2021). Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 2 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/YTTHO2FJQ97K Date Accessed: 2026-09-27
Meier, Walter, et al. “Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 2.” NASA National Snow and Ice Data Center Distributed Active Archive Center, 2021, https://doi.org/10.5067/YTTHO2FJQ97K. Date Accessed: 2026-09-27
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