The ASTER Surface Reflectance VNIR and SWIR (AST_07) data product (https://lpdaac.usgs.gov/documents/618/ASTER_Earthdata_Search_Order_Instructions.pdf) contains measures of the fraction of incoming solar radiation reflected from the Earth’s surface to the ASTER instrument corrected for atmospheric effects and viewing geometry for both the Visible and Near Infrared (VNIR) and Shortwave Infrared (SWIR) sensors. Each product delivery includes two Hierarchical Data Format - Earth Observing System (HDF-EOS) files: one for the VNIR, and the other for the SWIR. They are distinguished from one another by a one-second difference in the production time that appears as part of the file name. ASTER Level 2 data requests for observations that occurred after May 27, 2020 will resort back to using the climatology ozone input. Additional information can be found in the ASTER L2 Processing Options Update (https://lpdaac.usgs.gov/news/aster-l2-processing-options-update/).
ASTER L2 Surface Reflectance SWIR and ASTER L2 Surface Reflectance VNIR V003
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The ATBD provides physical theory and mathematical procedures for the calculations used to produce the data products.
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The LP DAAC product page provides information on Science Data Set layers and links for user guides, ATBDs, data access, tools, customer support, etc.
The ASTER home page is maintained through NASA's Jet Propulsion Laboratory and documents various aspects of the ASTER mission.
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The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.
Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data.
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The ASTER Level-1T Product Specification provides a description of the data file.
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