Solar radiation enters the Earth's atmosphere with a portion being scattered by clouds and aerosols.

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New Versions of MISR Aerosol and Land Surface Products Available

New Versions of MISR Aerosol and Land Surface Products Available

Monday, February 12, 2018

The NASA Jet Propulsion Laboratory (JPL) Multi-angle Imaging SpectroRadiometer (MISR) project and the NASA Langley Atmospheric Science Data Center (ASDC) announce the release of new versions of the MISR Level 2 (L2) Aerosol Product, the MISR L2 Land Surface Product, and the Level 3 (L3) Component Global Aerosol and Land Surface Products.


The new MISR L2 Aerosol Product contains per-orbit data fields with information on atmospheric aerosols, including aerosol optical depth, single scattering albedo, and Angstrom Exponent, reported on a 4.4 km horizontal grid, which represents a sixteen-fold increase in the spatial resolution relative to the previous version of the product. The new MISR L2 Land Surface Product contains per-orbit data fields for clear-sky land scenes including atmospherically corrected surface reflectance, leaf area index, and fractional absorbed photosynthetically active radiation, reported on a 1.1 km horizontal grid, as in the previous version. Both products are provided in NetCDF-4 format, which is compatible with HDF5, with significant formatting changes designed to make the products easier to use.


The MISR L3 products report the daily, monthly, and seasonal averages of fields from the corresponding MISR L2 data products at 0.5° resolution on a regular latitude-longitude grid. These products are also provided in NetCDF-4 format, and include formatting changes to the data fields to make them consistent with the updated L2 Aerosol and Land Surface products.


Because the final processing for the L2 Aerosol and Land Surface Products relies on climatologies that are not available until the end of the current season, L2 and L3 products are initially produced using climatologies for the same month of the previous year and the same season of the previous year, which are designated FIRSTLOOK. FIRSTLOOK products are typically generated within twenty-four hours of the end of the observation period. Once updated climatologies become available, these products are reprocessed to the final version and the FIRSTLOOK designation is eliminated.


Final processing for seasonal 2015 through 2017 is complete for the new L2 and L3 products. FIRSTLOOK forward processing for the L2 product and L3 daily and monthly products are available for November 1, 2017 through present. Reprocessing of the entire MISR mission (spring 2000 – spring 2017) for the L2 and L3 products is underway. The MISR product offerings are available via the Data Pool by FTP access to MISR, and by order through the online MISR Order and Customization Tool.


Information about these products and details about product quality are available on the MISR Data and Information Table on each product page under "Product Quality Statement".

Information for MISR-Versioning-V23