Delivery of new Suomi NPP data ceases on Nov. 2, 2026. Users should transition to alternative products.Suomi NPP data announcement
Migration to Consolidated Ingest and Archive will interrupt data ingestion at PO.DAAC, ASF DAAC, and GES DISC on Oct. 28-30, 2026.Read more
Description
This data set is retired and no longer available for download. We recommend using the <a href="https://nsidc.org/data/nsidc-0051">newest version of Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data</a> (NSIDC-0051) data set as an alternative. </p>
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.
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.
Copy Citation
Citation Copied
Cavalieri, D., Parkinson, C., Gloersen, P., & Zwally, H. (1996). Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 1 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/8GQ8LZQVL0VL Date Accessed: 2026-10-24
@misc{cavalieri_parkinson_gloersen_zwally_1996,
title={Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 1},
url={http://nsidc.org/data/NSIDC-0051/versions/1},
DOI={10.5067/8GQ8LZQVL0VL},
publisher={NASA National Snow and Ice Data Center Distributed Active Archive Center},
author={Cavalieri, Donald and Parkinson, Claire and Gloersen, Per and Zwally, H.},
year={1996},
}
Cavalieri, D., Parkinson, C., Gloersen, P., & Zwally, H. (1996). Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 1 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/8GQ8LZQVL0VL Date Accessed: 2026-10-24
Cavalieri, Donald, et al. “Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 1.” NASA National Snow and Ice Data Center Distributed Active Archive Center, 1996, https://doi.org/10.5067/8GQ8LZQVL0VL. Date Accessed: 2026-10-24
Get help with NASA Earth science data, datasets, tools, services, and metadata on the Earthdata Forum. Experienced staff in the data user community review and answer questions.
Ager, Thomas Gjerluff, Sejr, Mikael K., Duarte, Carlos M., Mankoff, Kenneth D., Schourup-Kristensen, Vibe, Boertmann, David, Mller, Eva Friis, Thyrring, Jakob, Krause-Jensen, Dorte
Heutte, Benjamin, Bergner, Nora, Angot, Helene, Pernov, Jakob B., Dada, Lubna, Mirrielees, Jessica A., Beck, Ivo, Baccarini, Andrea, Boyer, Matthew, Creamean, Jessie M., Daellenbach, Kaspar R., El Haddad, Imad, Frey, Markus M., Henning, Silvia, Laurila, Tiia, Moschos, Vaios, Petaja, Tuukka, Pratt, Kerri A., Quelever, Lauriane L. J., Shupe, Matthew D., Zieger, Paul, Jokinen, Tuija, Schmale, Julia