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Data Set ID:
AMSREL1A

AMSR-E/Aqua L1A Raw Observation Counts, Version 3

AMSR-E Level-1A observation counts are processed from Level-0 science packet data by the Japan Aerospace Exploration Agency (JAXA) Earth Observation Center (EOC) in Japan.

Version Summary:

The improved V003 AMSREL1A product features empirical corrections to the co-registration parameters A1 and A2, and an updated parameter file used for correcting the AMSR-E 89 GHz position information. As a result, Version 3 AMSREL1A data provide improved accuracy for the following: Latitude and Longitude, land/ocean flags, earth incidence angle, earth azimuth angle, sun azimuth angle, and sun elevation angle. Additionally, the HDF-EOS version was updated from 4.2r1 to 4.2r4.

Geographic Coverage

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

Spatial Resolution: Not Specified
Temporal Coverage:
  • 1 June 2002 to 4 October 2011
(updated daily)
Temporal Resolution: 50 minute
Parameter(s):
  • Microwave > Sensor Counts
Platform(s) AQUA
Sensor(s): AMSR-E
Data Format(s):
  • HDF
Version: V3
Data Contributor(s): Japan Aerospace Exploration Agency (JAXA).

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.

Japan Aerospace Exploration Agency (JAXA). 2003, updated daily. AMSR-E/Aqua L1A Raw Observation Counts, Version 3. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: http://dx.doi.org/10.5067/AMSR-E/AMSREL1A.003. [Date Accessed].
How do the calibration coefficients differ between the Level-1A and Level-2A AMSR-E data sets?

The calibration coefficients and offsets for the AMSR-E/Aqua L1A Raw Observation Counts are determined by JAXA. They are different from those of the AMSR-E/Aqua L2A Global Swath Spatially-... read more