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 Package 
Data Set ID:
NSIDC-0342

Near-Real-Time DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures, Version 1

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.

This data set provides daily, near-real-time Special Sensor Microwave/Imager (SSM/I) and Special Sensor Microwave Imager/Sounder (SSMIS) brightness temperatures in the Equal-Area Scalable Earth-Grid (EASE-Grid). The data set consists of gridded data in two projections: Northern Hemisphere and Southern Hemisphere. The data lag by one day and provide 270 days of near-real-time data. The spatial resolution is 25 km for all channels. Data are contained in flat binary files and are available via FTP.

Geographic Coverage

Spatial Coverage:

  • N: 90, S: -90, E: 180, W: -180
Spatial Resolution:
  • 25 km x 25 km
Temporal Coverage:
  • 27 September 2015 to 24 September 2016
Temporal Resolution: 1 day
Parameter(s):
  • Microwave > Brightness Temperature
Platform(s) DMSP, DMSP 5D-3/F17
Sensor(s): SSM/I, SSMIS
Data Format(s):
  • Binary
Version: V1
Data Contributor(s): Richard Armstrong, Mary J. Brodzik
Metadata XML: View Metadata Record

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.

Brodzik, M. and R. Armstrong. 2008. Near-Real-Time DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures, 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/BBQSXI3ERWWY. [Date Accessed].
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