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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.

Version Description

Initial release

Product Summary

Platforms
DMSP 5D-2/F11 ,
DMSP 5D-2/F13 ,
DMSP 5D-2/F8 ,
DMSP 5D-3/F17 ,
Nimbus-7
Instruments
SSM/I ,
SSMIS ,
SMMR
Projects
PM-LT
Spatial Extent

N: 90 S: 30.98 E: 180 W: -180

,

N: -39.23 S: -90 E: 180 W: -180

Spatial Resolution
25 Kilometers x 25 Kilometers
Spatial Reference System(s)
Multiple EPSG codes (see User Guide)
Location
POLAR
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
1978-10-26 to 2021-12-31
Temporal Resolution
Varies
Concept ID
C2984824953-NSIDC_CPRD
Data State
DEPRECATED
Number of Files/Granules
0
Processing Level
3
Published
Updated
Science Keywords
Sea Ice Concentration

Citation

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

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: 2026-09-05

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