ASTER L2 Surface Radiance VNIR and SWIR V004

Description

The Terra Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Surface Radiance VNIR and SWIR (AST_09) contains atmospherically corrected data for the Visible and Near Infrared (VNIR) and Shortwave Infrared (SWIR) sensors. Both the VNIR and SWIR data are atmospherically corrected and are generated using the bands of the corresponding ASTER [Level 1B](https://doi.org/10.5067/ASTER/AST_L1B.004) image.The AST_09 product has a spatial resolution of 15 meters (m) for the VNIR bands and 30 m for the SWIR bands.Known Issues* Level 2 products that are on the international date line/anti-meridian have incorrect bounding coordinates for the UTM zone defined in the file metadata.* SWIR data acquired after April 2008 may exhibit anomalous saturation and striping. Users should consult the ASTER SWIR User Advisory for additional details.Improvements/Changes from Previous Versions* Enhanced Atmospheric Correction: Version 4 uses Modern-Era Retrospective analysis for Research and Applications Version 2 (MERRA-2) data as the primary source for atmospheric parameters (ozone, water vapor, pressure, and temperature), improving the precision of emissivity calculations. Fallback Mechanisms: When MERRA-2 data are unavailable, the product employs Global Data Assimilation System (GDAS) data as a backup, with climatology data serving as a final fallback to ensure continuous processing. Radiometric Calibration Update: Version 4 applies Radiometric Calibration Coefficient Version 5 (RCC V5) to improve the radiometric accuracy of the raw DNs, based on research by [Tsuchida and others (2020)](https://doi.org/10.3390/rs12030427), published in Remote Sensing.

Resources

Name Format Description Link
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DC3306886555-LPCLOUD
5 https://lpdaac.usgs.gov%2F
5 https://asterweb.jpl.nasa.gov%2F
5 https://doi.org%2F10.5067%2FASTER%2FAST_09.004
5 https://lpdaac.usgs.gov%2Fdocuments%2F76%2FAST_09_ATBD.pdf
5 https://lpdaac.usgs.gov%2Fdocuments%2F75%2FAST_09_User_Guide_V3.pdf
5 https://lpdaac.usgs.gov%2Fdocuments%2F1319%2FASTER_User_Handbook_v4.pdf
5 https://data.lpdaac.earthdatacloud.nasa.gov%2Flp-prod-public%2FAST_09.004%2FAST_09_00411162004190648_20250403083712%2FAST_09_00411162004190648_20250403083712.jpg
5 https://lpdaac.usgs.gov%2Fdocuments%2F2243%2FASTER_User_Guide_V4.pdf
5 https://lpdaac.usgs.gov%2Fdocuments%2F1661%2FASTER_SWIR_User_Advisory_Jan_12_2009.pdf
5 https://www.earthdata.nasa.gov%2Fcenters%2Flp-daac
5 https://search.earthdata.nasa.gov/search?q=C3306886555-LPCLOUD
5 https://www.earthdata.nasa.gov/centers/lp-daac
5 https://asterweb.jpl.nasa.gov/
21 AST_09.004 https://doi.org/10.5067/ASTER/AST_09.004
33 AST_09_ATBD.pdf https://lpdaac.usgs.gov/documents/76/AST_09_ATBD.pdf
33 AST_09_User_Guide_V3.pdf https://lpdaac.usgs.gov/documents/75/AST_09_User_Guide_V3.pdf
33 ASTER_User_Handbook_v4.pdf https://lpdaac.usgs.gov/documents/1319/ASTER_User_Handbook_v4.pdf
33 ASTER_User_Guide_V4.pdf https://lpdaac.usgs.gov/documents/2243/ASTER_User_Guide_V4.pdf
33 ASTER_SWIR_User_Advisory_Jan_12_2009.pdf https://lpdaac.usgs.gov/documents/1661/ASTER_SWIR_User_Advisory_Jan_12_2009.pdf
22 AST_09_00411162004190648_20250403083712.jpg https://data.lpdaac.earthdatacloud.nasa.gov/lp-prod-public/AST_09.004/AST_09_00411162004190648_20250403083712/AST_09_00411162004190648_20250403083712.jpg

Tags

  • earth-science-infrared-wavelengths-spectral-engineering-infrared-flux
  • earth-science-visible-wavelengths-spectral-engineering-visible-flux
  • earth-science-infrared-wavelengths-spectral-engineering-infrared-radiance
  • earth-science-visible-wavelengths-spectral-engineering-visible-radiance
  • earth-science-infrared-wavelengths-spectral-engineering-infrared-imagery
  • earth-science-visible-wavelengths-spectral-engineering-visible-imagery

Topics

Categories