VIIRS Surface Reflectance and Vegetation Index Software Version 1.1 Release
14 February 2022Updated release of NOAA-20 and Suomi-NPP software that supports the creation of JPSS VIIRS NOAA Enterprise algorithm Environmental Data Record (EDR) Surface Reflectance products. This VIIRS software package contains binary executable files and supporting static data files, as well as input and output files for verification of a correct local installation. This CSPP release (CSPP_LSR Version 1.1) provides NOAA VIIRS Surface Reflectance Version 1.2, adapted and tested for operation in a real-time direct broadcast environment. A separate test data package can be downloaded for verifying a successful installation. In addition, the Surface Reflectances are then used to create Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI) products. These retrievals are not created using official NOAA/NESDIS/STAR software, which produces the Vegetation Indices on a multi-day global grid, but are created for each pixel in the input swath at 375m resolution. The JPSS program worked with the CSPP team to integrate the JPSS processing framework enterprise algorithms into stand alone executables, which can then be run through simple CSPP bash shell and python scripts. The output Land Surface Reflectance product created by this software is identical in naming, format (NetCDF), and structure to the corresponding NPP Data Exploitation system (NDE) files. Surface reflectances differ from Top-Of-Atmosphere (TOA) reflectances in that they are corrected to remove the influence of the atmosphere, thereby preserving only the portion that is being reflected from the surface below. What’s New in CSPP VIIRS Land Surface Reflectance Version 1.1?