ASTER L1A Reconstructed Unprocessed Instrument Data V004

Description

The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Level 1A (AST_L1A) contains reconstructed, instrument digital numbers (DNs) derived from the acquired telemetry streams of the telescopes: Visible and Near Infrared (VNIR), Shortwave Infrared (SWIR), and Thermal Infrared (TIR). Additionally, geometric correction coefficients and radiometric calibration coefficients are calculated and appended to the metadata but not applied. The AST_L1A product has a spatial resolution of 15 meters (m) for the VNIR bands, 30 m for the SWIR bands, and 90 m for the TIR bands.Know Issues* The QAPERCENTINTERPOLATEDDATA field in .met files was found to be inconsistent due to a software upgrade. Following evaluation by the ASTER Science Team, it was determined to have no impact on science data and has been set to 0 and nullified.* 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* 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%3DC3306888985-LPCLOUD
5 https://doi.org%2F10.5067%2FASTER%2FAST_L1A.004
5 https://lpdaac.usgs.gov%2F
5 https://asterweb.jpl.nasa.gov%2F
5 https://lpdaac.usgs.gov%2Fdocuments%2F70%2FAST_L1_ATBD.pdf
5 https://lpdaac.usgs.gov%2Fdocuments%2F69%2FAST_L1_User_Guide_V3.pdf
5 https://lpdaac.usgs.gov%2Fdocuments%2F175%2FASTER_L1_Product_Specifications.pdf
5 https://data.lpdaac.earthdatacloud.nasa.gov%2Flp-prod-public%2FAST_L1A.004%2FAST_L1A_00409062004104523_20250331125605%2FAST_L1A_00409062004104523_20250331125605.jpg
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://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=C3306888985-LPCLOUD
21 AST_L1A.004 https://doi.org/10.5067/ASTER/AST_L1A.004
5 https://www.earthdata.nasa.gov/centers/lp-daac
5 https://asterweb.jpl.nasa.gov/
33 AST_L1_ATBD.pdf https://lpdaac.usgs.gov/documents/70/AST_L1_ATBD.pdf
33 AST_L1_User_Guide_V3.pdf https://lpdaac.usgs.gov/documents/69/AST_L1_User_Guide_V3.pdf
33 ASTER_L1_Product_Specifications.pdf https://lpdaac.usgs.gov/documents/175/ASTER_L1_Product_Specifications.pdf
22 AST_L1A_00409062004104523_20250331125605.jpg https://data.lpdaac.earthdatacloud.nasa.gov/lp-prod-public/AST_L1A.004/AST_L1A_00409062004104523_20250331125605/AST_L1A_00409062004104523_20250331125605.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
33 ASTER_SWIR_User_Advisory_Jan_12_2009.pdf https://lpdaac.usgs.gov/documents/1661/ASTER_SWIR_User_Advisory_Jan_12_2009.pdf

Tags

  • earth-science-infrared-wavelengths-spectral-engineering-reflected-infrared
  • earth-science-visible-wavelengths-spectral-engineering-visible-imagery
  • earth-science-infrared-wavelengths-spectral-engineering-thermal-infrared

Topics

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