ASTER L2 Surface Emissivity V004

Description

The Terra Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Surface Emissivity (AST_05) is produced using the Temperature/Emissivity Separation (TES) algorithm for the five Thermal Infrared (TIR) 90 meter bands, acquired during the day or night. The product comprises per-pixel emissivity measurements generated over land in addition to embedded metadata and quality assurance data planes. Known Issues* Level 2 products that are on the international date line/anti-meridian have incorrect bounding coordinates for the Universal Transverse Mercator (UTM) zone defined in the file metadata.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://lpdaac.usgs.gov%2F
5 https://asterweb.jpl.nasa.gov%2F
5 https://doi.org%2F10.5067%2FASTER%2FAST_05.004
5 https://lpdaac.usgs.gov%2Fdocuments%2F73%2FAST_05_User_Guide_V3.pdf
5 https://lpdaac.usgs.gov%2Fdocuments%2F74%2FAST_05_ATBD.pdf
5 https://lpdaac.usgs.gov%2Fdocuments%2F2243%2FASTER_User_Guide_V4.pdf
5 https://lpdaac.usgs.gov%2Fdocuments%2F1319%2FASTER_User_Handbook_v4.pdf
5 https://search.earthdata.nasa.gov%2Fsearch%3Fq%3DC3306858335-LPCLOUD
5 https://data.lpdaac.earthdatacloud.nasa.gov%2Flp-prod-public%2FAST_05.004%2FAST_05_00409082004185032_20250331151132%2FAST_05_00409082004185032_20250331151132.jpg
5 https://www.earthdata.nasa.gov%2Fcenters%2Flp-daac
5 https://search.earthdata.nasa.gov/search?q=C3306858335-LPCLOUD
5 https://www.earthdata.nasa.gov/centers/lp-daac
5 https://asterweb.jpl.nasa.gov/
21 AST_05.004 https://doi.org/10.5067/ASTER/AST_05.004
33 AST_05_User_Guide_V3.pdf https://lpdaac.usgs.gov/documents/73/AST_05_User_Guide_V3.pdf
33 AST_05_ATBD.pdf https://lpdaac.usgs.gov/documents/74/AST_05_ATBD.pdf
22 AST_05_00409082004185032_20250331151132.jpg https://data.lpdaac.earthdatacloud.nasa.gov/lp-prod-public/AST_05.004/AST_05_00409082004185032_20250331151132/AST_05_00409082004185032_20250331151132.jpg
33 ASTER_User_Guide_V4.pdf https://lpdaac.usgs.gov/documents/2243/ASTER_User_Guide_V4.pdf
33 ASTER_User_Handbook_v4.pdf https://lpdaac.usgs.gov/documents/1319/ASTER_User_Handbook_v4.pdf

Tags

  • earth-science-surface-radiative-properties-land-surface-emissivity

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