AST_07XT: ASTER Surface Reflectance and Crosstalk-Corrected Imagery

ASTER L2 Surface Reflectance VNIR and Crosstalk Corrected SWIR V003 is a decommissioned NASA satellite data product. It provided atmospherically corrected surface reflectance from the Terra ASTER instrument at 15-meter resolution for VNIR bands and 30-meter for SWIR bands, with corrections for a known SWIR crosstalk issue. The product was delivered as paired HDF-EOS files for VNIR and SWIR sensors.

Use Cases

• Land cover classification based on atmospherically corrected surface reflectance values.
• Vegetation and canopy structure analysis using corrected VNIR and SWIR spectral bands.
• Monitoring surface reflectance changes over time for climate and carbon cycle studies.

Strengths

• Provides high spatial resolution surface reflectance data (15m VNIR, 30m SWIR).
• Includes correction for a known SWIR sensor crosstalk issue that caused image blurring.
• Data is atmospherically corrected for both VNIR and SWIR sensors.

Limitations

• This Version 3 product was decommissioned on December 15, 2025, per NASA and Data.gov.
• Metadata completeness is low; specific column names, row counts, and file sizes are not provided.
• Access is restricted to NASA's Earthdata Search platform, which may require specific ordering procedures.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Collected by the Terra Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument.

Freshness

Last updated 2026-04-10 on Data.gov, but product is decommissioned.

Geography

Global coverage from the Terra satellite.