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Data Set ID:
NSIDC-0071

Nimbus-7 SMMR Pathfinder Daily EASE-Grid Brightness Temperatures, Version 1

This data set consists of brightness temperatures acquired from the Scanning Multichannel Microwave Radiometer (SMMR) on board the Nimbus-7 Pathfinder satellite. The brightness temperatures have been gridded onto the Equal-Area Scalable Earth Grid (EASE-Grid) and are presented in three different projections: Northern Hemisphere, Southern Hemisphere, and global. The SMMR EASE-Grid data were derived from SMMR brightness temperatures in swath format (level 1b data). Coverage is global, and data are available from 25 October 1978 through 20 August 1987. The spatial resolution is 25 km for all channels (6.6, 10.7, 18, 21, and 37 GHz for both vertical and horizontal polarizations). Both brightness temperatures and time files are provided for a given projection in flat binary format for each day. The brightness temperatures are provided in tenths of kelvins and the time files are in minutes since 0:00 Coordinated Universal Time (UTC) of the date of the enclosing file. Data are available via FTP.

Geographic Coverage

Parameter(s):
  • Microwave > Brightness Temperature
Spatial Coverage:
  • N: 90, S: -90, E: 180, W: -180

Spatial Resolution:
  • 25 km x 25 km
Temporal Coverage:
  • 25 October 1978 to 20 August 1987
Temporal Resolution: 1 day
Data Format(s):
  • Binary
Platform(s) NIMBUS-7
Sensor(s): SMMR
Version: V1
Data Contributor(s): Kenneth Knowles, Mary Brodzik, Richard Armstrong, Eni Njoku

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.

Knowles, K., E. G. Njoku, R. Armstrong, and M. J. Brodzik. 2000. Nimbus-7 SMMR 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/10.5067/36SLCSCZU7N6. [Date Accessed].
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