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 is generated from brightness temperature data and is designed to provide a consistent time series of sea ice concentrations spanning the coverage of several passive microwave instruments.The data are provided in the polar stereographic projection at a grid cell size of 25 x 25 km. Data coverage is from 26 October 1978 to 31 December 2025.
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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DiGirolamo, N., Parkinson, C., Cavalieri, D., Gloersen, P., & Zwally, H. (2022). Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 2 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/MPYG15WAA4WX Date Accessed: 2026-09-27
@misc{digirolamo_parkinson_cavalieri_gloersen_zwally_2022,
title={Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 2},
url={http://nsidc.org/data/NSIDC-0051/versions/2},
DOI={10.5067/MPYG15WAA4WX},
publisher={NASA National Snow and Ice Data Center Distributed Active Archive Center},
author={DiGirolamo, Nicolo and Parkinson, Claire and Cavalieri, Donald and Gloersen, Per and Zwally, H.},
year={2022},
}
DiGirolamo, N., Parkinson, C., Cavalieri, D., Gloersen, P., & Zwally, H. (2022). Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 2 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/MPYG15WAA4WX Date Accessed: 2026-09-27
DiGirolamo, Nicolo, et al. “Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 2.” NASA National Snow and Ice Data Center Distributed Active Archive Center, 2022, https://doi.org/10.5067/MPYG15WAA4WX. Date Accessed: 2026-09-27
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