Vegetation Earth System Data Record from DSCOVR EPIC observations: product analysis and scientific exploration
Knjazihhin, Juri; Pisek, Jan; Myneni, Ranga
The NASA's Earth Polychromatic Imaging Camera (EPIC) onboard NOAA's Deep Space Climate Observatory (DSCOVR) mission was launched on February 11, 2015 to the Sun-Earth
Lagrangian L1 point where it began to collect radiance data of the entire sunlit Earth every 65 to 110 min in June 2015. It provides imageries in near backscattering directions at ten ultraviolet to
near infrared narrow spectral bands. The DSCOVR EPIC science product suite includes Vegetation Earth System Data Record (VESDR) that provides Leaf Area Index (LAI) and diurnal courses of
Normalized Difference Vegetation Index (NDVI), Sunlit LAI (SLAI), Fraction of incident Photosynthetically Active Radiation (FPAR) absorbed by the vegetation, Directional Area Scattering
Function (DASF) as well as recently added Earth Reflector Type Index (ERTI) and Canopy Scattering Coefficient (CSC). The parameters at 10 km regional sinusoidal grids and 65 to 110 minute
temporal frequency are being generated from the upstream DSCOVR EPIC surface reflectance product and available from the NASA Langley Atmospheric Science Data Center. This poster
provides an overview of the EPIC VESDR research. This includes a description of the operational algorithm and its performance, VESDR product details, its quality assessment and scientific
exploration.
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