Dataset 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

Get Data

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

Geographic Coverage

Data Set Tabs

Temporal Coverage:
  • 2002-06-01 to 2011-10-04
Temporal Resolution:
Not specified
Sensor(s): AMSR-E
Spatial Coverage:
  • N: 89.24, S: -89.24, E: 180, W: -180

Spatial Resolution:
Not Specified
  • Microwave > Brightness Temperature
  • Microwave > Microwave Imagery
Data Format(s):
Data Contributor(s): Peter Ashcroft, Frank Wentz

We kindly request that you cite the use of this data set in a publication using the following citation. For more information, see Use and Copyright.

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.

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