From 9:00 a.m. to noon (USA Mountain Time) Wednesday October 5, AMSR-E, Aquarius, IceBridge, ICESat/GLAS, MODIS, NISE, and SMAP data will not be available for ordering due to system maintenance.
NOTE: Reverb will be decommissioned in the coming months and replaced with Earthdata Search. All links to Reverb will be removed at that time.
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.
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