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Data Set ID:

Sea Ice Trends and Climatologies from SMMR and SSM/I-SSMIS, Version 1

Notice Regarding Data Corrections

04 September 2013

These data sets were recently revised. Please refer to the Documentation link provided above for details regarding data corrections and reprocessing.

NSIDC provides a suite of value-added data sets to aid in investigations of the variability and trends of sea ice cover. These data sets provide users with information about sea ice extent, total ice-covered area, ice persistence, monthly climatologies of sea ice concentrations, and ocean masks. The maps are in ArcInfo export file format. All other data sets are in flat binary or ASCII format with accompanying Portable Network Graphics (PNG) browse images. Products are derived from Nimbus-7 SMMR; DMSP-F8, -F11, and -F13 SSM/I; and from DMSP-F17 SSMIS sea ice concentrations at a grid cell size of 25 x 25 km. Data begin in October 1978 and processing is ongoing. Data are available via FTP.

Geographic Coverage

Spatial Coverage:
  • N: -39.23, S: -90, E: 180, W: -180

  • N: 90, S: 30.98, E: 180, W: -180

Spatial Resolution:
  • 25 km x 25 km
Temporal Coverage:
  • 26 October 1978 to 31 December 2013
Temporal Resolution: Not specified
  • Sea Ice > Ice Extent
  • Sea Ice > Sea Ice Concentration
Platform(s) DMSP 5D-2/F11, DMSP 5D-2/F13, DMSP 5D-2/F15, DMSP 5D-2/F8, DMSP 5D-3/F17, NIMBUS-5, NIMBUS-7
Data Format(s):
  • Binary
  • PNG
  • ASCII Text (.txt)
  • JPEG
Version: V1
Data Contributor(s): Julienne Stroeve, Walt Meier

Data Citation

As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Stroeve, J. 2003. Sea Ice Trends and Climatologies from SMMR and SSM/I-SSMIS, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: [Date Accessed].
Questions? Please contact:

NSIDC User Services
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Fax: 1 303 492-2468
Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA