User Guide
ASTER Science Team (JPL) Website
Joint Emissivity Database Initiative (JEDI) Web Page
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 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 HDF5 version of the data are available for distribution, please see AG1km for more information.
The National Aeronautics and Space Administration’s (NASA) Jet Propulsion Laboratory (JPL), California Institute of Technology, developed the ASTER GED product.
Characteristic | Description |
---|---|
Collection | ASTER GED |
DOI | 10.5067/Community/ASTER_GED/AG1kmB.003 |
File Size | ~0.7 MB |
Temporal Resolution | Multi-Year |
Temporal Extent | 2000-04-01 to 2008-12-31 |
Spatial Extent | Global |
Coordinate System | Geographic Latitude and Longitude |
Datum | World Geodetic System (WGS84) |
File Format | BIN |
Geographic Dimensions | 1 degree lat x 1 degree lon |
Characteristic | Description |
---|---|
Number of Science Dataset (SDS) Layers | 19 |
Columns/Rows | 1000 x 1000 |
Pixel Size | 1 km |
SDS Name | Description | Units | Data Type | Fill Value | No Data Value | Valid Range | Scale Factor |
---|---|---|---|---|---|---|---|
Emissivity Mean | Emissivity Mean Band 10 (8.3 μm) | N/A | 16-bit signed integer | -9999 | N/A | 0 to 1000 | 0.001 |
Emissivity Mean | Emissivity Mean Band 11 (8.6 μm) | N/A | 16-bit signed integer | -9999 | N/A | 0 to 1000 | 0.001 |
Emissivity Mean | Emissivity Mean Band 12 (9.1 μm) | N/A | 16-bit signed integer | -9999 | N/A | 0 to 1000 | 0.001 |
Emissivity Mean | Emissivity Mean Band 13 (10.6 μm) | N/A | 16-bit signed integer | -9999 | N/A | 0 to 1000 | 0.001 |
Emissivity Mean | Emissivity Mean Band 14 (11.3 μm) | N/A | 16-bit signed integer | -9999 | N/A | 0 to 1000 | 0.001 |
Emissivity SDev | Emissivity Standard Deviation for Band 10 | N/A | 16-bit signed integer | -9999 | N/A | -1000 to 1000 | 0.0001 |
Emissivity SDev | Emissivity Standard Deviation for Band 11 | N/A | 16-bit signed integer | -9999 | N/A | -1000 to 1000 | 0.0001 |
Emissivity SDev | Emissivity Standard Deviation for Band 12 | N/A | 16-bit signed integer | -9999 | N/A | -1000 to 1000 | 0.0001 |
Emissivity SDev | Emissivity Standard Deviation for Band 13 | N/A | 16-bit signed integer | -9999 | N/A | -1000 to 1000 | 0.0001 |
Emissivity SDev | Emissivity Standard Deviation for Band 14 | N/A | 16-bit signed integer | -9999 | N/A | -1000 to 1000 | 0.0001 |
Temperature Mean | Temperature Mean | Kelvin | 32-bit signed integer | -9999 | N/A | 0 to 65535 | 0.01 |
Temperature SDev | Temperature Standard Deviation | Kelvin | 16-bit signed integer | -9999 | N/A | 0 to 65535 | 0.01 |
NDVI Mean | NDVI Mean | N/A | 16-bit signed integer | -9999 | N/A | 0 to 100 | 0.01 |
NDVI SDev | NDVI Standard Deviation | N/A | 16-bit signed integer | -9999 | N/A | 0 to 100 | 0.01 |
Land Water Map | Land Water Map | N/A | 16-bit unsigned integer | N/A | N/A | 0 land1 water | N/A |
Observations | Number of Observations per pixel | N/A | 16-bit unsigned integer | N/A | N/A | N/A | N/A |
Latitude | Latitude | Degree | 32-bit floating point | N/A | N/A | -90 to 90 | N/A |
Longitude | Longitude | Degree | 32-bit floating point | N/A | N/A | -180 to 180 | N/A |
ASTER GDEM | ASTER Global Digital Elevation Model V002 | Meters | 16-bit signed integer | -9999 | N/A | -500 to 9000 | N/A |
¹Values of -9999 are assigned to missing or cloudy data. (add footnote to Fill Value header)
Product quality information can be found in the User Guide.
Known issues are provided in Section 4, starting on page 8 of the User Guide.