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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.
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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: 2026-10-18
Satellite sea-ice concentration data were obtained from the NASA National Snow and Ice Data Center (NSIDC) Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I–SSMIS Passive Microwave Data, Version 2 (NSIDC-0051; https://doi.org/10.5067/MPYG15WAA4WX). Sea-ice motion data were obtained from the NSIDC Quicklook Arctic Weekly EASE-Grid Sea Ice Motion Vectors, Version 1 (NSIDC-0748; https://doi.org/10.5067/O0XI8PPYEZJ6). ERA5 monthly mean single-level fields are available from the Copernicus Climate Data Store (https://doi.org/10.24381/cds.f17050d7), and ERA5 monthly mean pressure-level fields are available at https://doi.org/10.24381/cds.6860a573. The INTAROS-opt ocean-sea-ice reanalysis used for the process-based sea-ice tendency diagnostics was produced using the adjoint-based MITgcm system described by Lyu et al. (2021, 2025). The model configuration and outputs associated with the Lyu et al. (2025) experiments are publicly available through Zenodo (https://doi.org/10.5281/zenodo.14584780), with the modified MITgcm code available at https://doi.org/10.5281/zenodo.14584929. The extended 2007-2025 INTAROS-opt fields used in this study are available at http://dx.doi.org/10.12157/IOCAS.20260819.001.
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: 2026-10-18
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: 2026-10-18
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DuVivier, Alice K., Krumhardt, Kristen M., Landrum, Laura L., Sylvester, Zephyr, Sen, Bilgecan, Labrousse, Sara, Che-Castaldo, Christian, Eparvier, Alice, Holland, Marika M., LaRue, Michelle A., Nissen, Cara, Levy, Michael N., Jenouvrier, Stephanie, Brooks, Cassandra
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