N: 90 S: -90 E: 180 W: -180
Description
The Terra Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Emissivity Dataset (GED) land surface temperature and emissivity (LST&E) data products are generated using the ASTER Temperature Emissivity Separation (TES) algorithm with a Water Vapor Scaling (WVS) atmospheric correction method using Moderate Resolution Imaging Spectroradiometer (MODIS) MOD07_L2 atmospheric profiles and the MODerate Spectral resolution TRANsmittance (MODTRAN 5.2) radiative transfer model. This dataset is computed from all clear-sky pixels of ASTER scenes acquired from 2000 through 2008.
The National Aeronautics and Space Administration’s (NASA) Jet Propulsion Laboratory (JPL), California Institute of Technology, developed the ASTER GED product.
Known Issues
- Known issues are provided in Section 4 of the User Guide.
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Product Summary
Citation
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.
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Variables
The table below lists the variables contained within a single granule for this dataset. Variables often contain observed or derived geophysical measurements collected from a variety of sources, including remote sensing instruments on satellite and airborne platforms, field campaigns, in situ measurements, and model outputs. The terms variable, parameter, scientific data set, layer, and band have been used across NASA’s Earth science disciplines; however, variable is the designated nomenclature in NASA’s Common Metadata Repository (CMR). Variable metadata attributes such as Name, Description, Units, Data Type, Fill Value, Valid Range, and Scale Factor allow users to efficiently process and analyze the data. The full range of attributes may not be applicable to all variables. Additional information on variable attributes is typically available in the data, user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.
| Name Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor |
|---|---|---|---|---|---|---|
| ASTER GDEM | ASTER Global Digital Elevation Model V002 | Meters | int16 | -9999 | -500 to 9000 | N/A |
| Emissivity Mean | Emissivity Mean for Band 10 (8.3 μm), Band 11 (8.6 μm), Band 12 (9.1 μm), Band 13 (10.6 μm) and Band 14 (11.3 μm) | N/A | int16 | -9999 | 0 to 1000 | 0.001 |
| Emissivity SDev | Emissivity Standard Deviation for Bands 10 to 14 | N/A | int16 | -9999 | -1000 to 1000 | 0.0001 |
| Land Water Map | Land Water Map | N/A | int16 | N/A | 0 to 1 | N/A |
| Latitude | Latitude | Degree | float32 | N/A | -90 to 90 | N/A |
| Longitude | Longitude | Degree | float32 | N/A | -180 to 180 | N/A |
| NDVI Mean | NDVI Mean | N/A | int16 | -9999 | 0 to 100 | 0.01 |
| NDVI SDev | NDVI Standard Deviation | N/A | int16 | -9999 | 0 to 100 | 0.01 |
| Observations | Number of Observations per pixel | N/A | int16 | N/A | N/A | N/A |
| Temperature Mean | Temperature Mean | Kelvin | int32 | -9999 | 0 to 65535 | 0.01 |
| Temperature SDev | Temperature Standard Deviation | Kelvin | int16 | -9999 | 0 to 65535 | 0.01 |