ASTER Global Emissivity and Temperature Dataset 2000-2008

Land surface temperature and emissivity data products derived from the ASTER instrument on NASA's Terra satellite. The dataset covers the entire globe and is computed from all clear-sky ASTER scenes acquired between 2000 and 2008. It was developed by NASA's Jet Propulsion Laboratory using the Temperature Emissivity Separation algorithm with atmospheric correction.

Use Cases

• Analyzing global land surface temperature patterns and trends from 2000-2008.
• Modeling surface energy balance and emissivity for climate studies.
• Providing baseline emissivity data for atmospheric correction of other satellite imagery.
• Studying land surface properties and their changes over an eight-year period.

Strengths

• Provides global spatial coverage for land surface analysis.
• Derived from a consistent eight-year time series (2000-2008) of ASTER satellite data.
• Processed using a standardized algorithm (TES with WVS atmospheric correction) for uniformity.

Limitations

• The dataset (AG1kmB Version 3) was officially decommissioned in December 2016, directing users to a newer HDF5 version.
• Specific row counts, file sizes, and detailed column structures are not provided across the sources.
• Sources conflict on the 'last updated' date, with one showing a future date (2026) and another the end of the data collection period (2008).

Provenance

Source

NASA Jet Propulsion Laboratory, California Institute of Technology.

Collection Method

Generated using the ASTER Temperature Emissivity Separation (TES) algorithm with Water Vapor Scaling (WVS) atmospheric correction, applied to clear-sky pixels from ASTER satellite scenes.

Time Range

2000 through 2008

Freshness

2008-12-31 00:00:00

Geography

Entire globe