We are in the process of migrating all NASA Earth science data sites into Earthdata from now until end of 2026. Not all NASA Earth science data and resources will appear here until then. Thank you for your patience as we make this transition.Read about the Web Unification Project
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 began on 26 October 1978 and is ongoing through the most current processing, with updated data processed several times annually.
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
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: 2026-06-08
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: 2026-06-08
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: 2026-06-08
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
Eriksen, E., Husson, B., Skaret, G., Ingvaldsen, R. B., Dalpadado, P., Johannesen, E., Jrgensen, L. L., Bogstad, B., Dolgov, A. V., Prozorkevich, D. V., Prokhorova, T. A., Russkikh, A. A., Strelkova, N. A., Trofimov, A. G., Prokopchuk, I. P., Filin, A. A.