Advanced Microwave Scanning Radiometer from EOS (AMSR-E) data from 2011 provides passive microwave radiometer measurements. The instrument measures vertically and horizontally polarized brightness temperatures at six frequencies from 6.925 GHz to 89.0 GHz. The data was collected by the AMD_KOPRI organization and last updated in December 2011.
Use Cases
- Estimate sea ice concentration using the polarization difference at 36.5 GHz.
- Retrieve soil moisture levels by analyzing the 6.925 GHz and 10.65 GHz channels.
- Derive atmospheric water vapor content from the 23.8 GHz channel measurements.
- Study surface emissivity and physical temperature using multi-frequency brightness temperatures.
Strengths
- Provides multi-frequency measurements at 6.925, 10.65, 18.7, 23.8, 36.5, and 89.0 GHz.
- Includes both vertical and horizontal polarization for all six frequency channels.
Limitations
- Spatial resolution varies significantly from 5.4 km at 89.0 GHz to 56 km at 6.9 GHz.
- Data is from a single year (2011), limiting temporal analysis of trends.
Provenance
- Source
- Advanced Microwave Scanning Radiometer from EOS (AMSR-E) instrument.
- Collection Method
- Measurements collected by an offset parabolic reflector scanning the Earth with a constant 55-degree incidence angle, calibrated with cosmic background radiation and an on-board warm target.
- Time Range
- 2011
- Freshness
- Data is from 2011.
- Geography
- Global coverage from the satellite's swath.