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

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at the NASA Langley Research Center

DSCOVR EPIC L2 VESDR Data Release Announcement

DSCOVR EPIC L2 VESDR Data Release Announcement

VESDR
Thursday, June 7, 2018

The NASA Langley Atmospheric Sciences Data Center (ASDC) and Boston University announce the public release of Vegetation Earth System Data Record (VESDR) derived from the Earth Polychromatic Imaging Camera (EPIC) onboard the Deep Space Climate Observatory (DSCOVR). The VESDR product contains Leaf Area Index (LAI) and diurnal courses of Normalized Difference Vegetation Index (NDVI), Sunlit Leaf Area Index (SLAI), Fraction of incident Photosynthetically Active Radiation (400-70 nm) absorbed by the vegetation (FPAR) and Directional Area Scattering Function (DASF). The parameters are distributed at 10 km sinusoidal grid and 65 to 110 minute temporal frequency. 

 

FPAR, LAI, SLAI are useful for monitoring variability and change in global vegetation due to climate and anthropogenic influences, modeling climate, carbon and water cycles, and improving forecasting of near surface weather. DASF provides information critical to accounting for structural contributions to measurements of leaf biochemistry from remote sensing. Whereas LAI is a standard product of many satellite missions, diurnal courses of global FPAR, NDVI, SLAI and DASF are new satellite derived products

 

We also provide two ancillary science data products, namely, 10 km Land Cover Type and Distribution of Land Cover Types within 10 km pixel. These products were derived from 500m MODIS land cover type 3 product (MCDLCHKM), which was generated from 2008, 2009 and 2010 land cover products (MCD12Q1, v051).

 

Information about these products, details about product quality, and mechanisms to access the data can be found under DSCOVR Data and Information at the ASDC website. 

 

https://doi.org/10.5067/EPIC/DSCOVR/L2_VESDR.001