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Data Set ID:
NSIDC-0081

Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 1

Due to technical difficulties, there is a delay in the release of the most recent data for this product. We are working to make the data available as soon as possible. Please contact NSIDC User Services if you have any questions.

Notice (04/21/2016): On 04/05/2016 a change in the solar panel position to shade the nitrogen tank on board the Defense Meteorological Satellite Program (DMSP) F-17 satellite was made. In doing so, the integrity of the vertically polarized 37 GHz channel (37V) of the Special Sensor Microwave Imager and Sounder (SSMIS) was compromised. On 04/13/16 an additional change in the solar panel position was made. This change had improved the problems we were seeing in the 37V GHz channel for data from April 13 to April 19; however, on April 20, the 37V GHz channel started to produce bad data again. Thus, data from April 20 onward should not be used until further notice. The affected daily files from 04/05 - 04/13 have been removed from distribution.

This data set provides a Near-Real-Time (NRT) map of sea ice concentrations for both the Northern and Southern Hemispheres.

Geographic Coverage

Data Set Tabs

Spatial Coverage
  • N: 90, S: 30.98, E: 180, W: -180

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

Spatial Resolution
  • 25 km x 25 km
Temporal Coverage
  • 1 January 2015 to 27 April 2016
(updated daily)
Temporal Resolution 1 day
Parameter(s)
  • Sea Ice > Sea Ice Concentration
Platform(s) DMSP 5D-2/F13, DMSP 5D-2/F15, DMSP 5D-3/F17
Sensor(s) SSM/I, SSMIS
Data Format(s)
  • PNG
  • Binary
Version V1
Data Contributor(s) Jim Maslanik, Julienne Stroeve, Kenneth Knowles, Walt Meier, Donald Cavalieri

Data Citation

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

Maslanik, J. and J. Stroeve. 1999, updated daily. Near-Real-Time DMSP SSMIS Daily Polar Gridded Sea Ice Concentrations, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: http://dx.doi.org/10.5067/U8C09DWVX9LM. [Date Accessed].

Questions? Please contact:

NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA