Get Data

Reverb: NASA search and order tool for subsetting, reprojecting, and reformatting data.
Data Set ID:

AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures, Version 3

The AMSR-E Level-2A product (AE_L2A) contains brightness temperatures available at a variety of resolutions that correspond to the footprint sizes of the observations. Each swath is packaged with associated geolocation fields.

Version Summary:

Changes to this algorithm include:

Complete recalibration to RSS Version 7 standard, as follows:

  • Intercalibration with other microwave radiometers, particularly SSM/I F13 and WindSat
  • Calibration with improved Radiative Transfer Model (RTM): RSS RTM Version 2011
  • Updated ocean emissivity model (Meissner and Wentz 2012)
  • Adjustment of the water vapor and oxygen absorptions, particularly the water vapor continuum absorption
  • Improved calibration over land, based on heavily vegetated tropical rainforest scenes
  • Nonlinearity correction at 18.7 GHz, brightness temperatures approx. 2 degrees K lower over land
  • Adjustment to Antenna Pattern Coefficients (APC) for cross-polarization and spillover
  • Slight shift to the 18.7 GHz center observation frequency
  • Adjustment of effective hot-load temperature

Improved Radio Frequency Interference (RFI) flagging in response to new geostationary sources. For more details, see the Remote Sensing Systems RFI page:

  • Replacement of the Geostationary_Satellite_Glint_Angle field with two new fields:


  • For each observation, L2A now includes the location where the reflection vector intersects the geostationary sphere

Geographic Coverage

Data Set Tabs

Spatial Coverage:
  • N: 89.24, S: -89.24, E: 180, W: -180

Spatial Resolution:
Not Specified
Temporal Coverage
  • 1 June 2002 to 4 October 2011
Temporal Resolution:
Not specified
  • Microwave > Brightness Temperature
  • Microwave > Microwave Imagery
Sensor(s): AMSR-E
Data Format(s):
Data Contributor(s): Peter Ashcroft, Frank Wentz

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.

Ashcroft, P. and F. J. Wentz. 2013. AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures, Version 3. [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