Data Set ID:

AMSR-E/Aqua Daily Global Quarter-Degree Gridded Brightness Temperatures, Version 1

The Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) instrument on the NASA EOS Aqua satellite provides global passive microwave measurements of the Earth. NSIDC produces AMSR-E gridded brightness temperature data by interpolating AMSR-E data (6.9 GHz, 10.7 GHz, 18.7 GHz, 23.8 GHz, 36.5 GHz, and 89.0 GHz) to the output grids from swath space using an inverse-distance squared method. AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures (AE_L2A) input source data are used to create the gridded brightness temperature data.

These data are provided in one global cylindrical, equidistant latitude-longitude projection at 0.25 degree (quarter-degree) resolution. Spatial coverage is global, data are daily, and coverage begins 19 June 2002, and ends 27 September 2011.

Data are provided via FTP. Brightness temperature data (in tenths of kelvins) are two-byte unsigned integers and time files are two-byte signed integers.

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Geographic Coverage

Data Set Tabs

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

Spatial Resolution:
  • 0.25 degree x 0.25 degree
  • .25° x .25°
  • 25 km x 25 km
Temporal Coverage
  • 2002-06-19 to 2011-09-27
Temporal Resolution:
1 day
  • Microwave > Brightness Temperature
Sensor(s): AMSR-E
Data Format(s):
  • Binary
Data Contributor(s): Kenneth Knowles, Matthew Savoie, Richard Armstrong, Mary J. Brodzik

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.

Knowles, K., M. Savoie, R. Armstrong, and M. Brodzik. 2006. AMSR-E/Aqua Daily Global Quarter-Degree Gridded Brightness Temperatures, Version 1. [indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. [Date Accessed].

Questions? Please contact:

NSIDC User Services
Phone: 1 303 492-6199
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