ASDC | DSCOVR_EPIC_L2_VESDR

DSCOVR Level 2

Entry Title: DSCOVR EPIC Level 2 Vegetation Earth System Data Record (VESDR), Version 2

Entry ID: DSCOVR_EPIC_L2_VESDR_02

Aerosols Clouds Radiation Budget

Description

DSCOVR_EPIC_L2_VESDR_02 is the Deep Space Climate ObserVatoRy (DSCOVR) Earth Polychromatic Imaging Camera (EPIC) Level 2 Vegetation Earth System Data Record (VESDR), Version 2 data product. It provides Leaf Area Index (LAI) and diurnal courses of Normalized Difference Vegetation Index (NDVI), Sunlit Leaf Area Index (SLAI), Fraction of incident Photosynthetically Active Radiation (400-700 nm) absorbed by the vegetation (FPAR), Directional Area Scattering Function (DASF), Earth Reflector Type Index (ERTI) and Canopy Scattering Coefficient at 443 nm, 551 nm, 680 nm and 779 nm. The VESDR files also include Solar Zenith Angle (SZA), Solar Azimuthal Angle (SAA), View Zenith (VZA), and Azimuthal (VAA) angles at the same temporal and spatial resolutions. The parameters are projected on eight regional 10 km SIN grids and available at 65 to 110 min temporal frequency. The version 2 VESDR product is generated from the upstream DSCOVR EPIC L2 MAIAC (Multi-Angle Implementation of Atmospheric Correction version 2) surface reflectance product.

FPAR, LAI, and SLAI help monitor 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. The canopy scattering coefficient is the Fraction of intercepted radiation reflected from or diffusely transmitted through the vegetation. This parameter is strongly correlated with leaf albedo, which depends on leaf biochemical constituents.

We also provide two ancillary science data products: "Version 2 10 km Land Cover Type" and "Version 2 Distribution of Land Cover Types within 10 km EPIC pixel." The products were derived from 500m Moderate Resolution Imaging Spectroradiometer (MODIS) land cover type 3 product (MCDLCHKM), which was generated from 2008, 2009, and 2010 land cover products (MCD12Q1, v051).

A detailed description of the VESDR and ancillary science data products can be found in "VESDR Science Data Product Guide, version 2". Section "USER'S GUIDE" provides links to this document as well as to the two ancillary science data products.

DOI

10.5067/EPIC/DSCOVR/L2_VESDR.002

Citation Styles for this Dataset

Publications which Cite this Collection

Lyapustin, A.; Wang, Y.; Go, S.; Choi, M.; Korkin, S.; Huang, D.; Knyazikhin, Y.; Blank, K.; Marshak, A. (2017). Atmospheric Correction of DSCOVR EPIC: Version 2 MAIAC Algorithm.

VIEW RELATED INFORMATION

DATA CITATION GUIDELINES

How to cite ASDC data

PUBLICATIONS

Estimation of leaf area index and its sunlit portion from DSCOVR EPIC data: Theoretical basis

READ-ME

Earth Observation Portal Page for DSCOVR Mission Information

USER'S GUIDE

From GCMD Science Keywords:

LEAF AREA INDEX (LAI) > VEGETATION INDEX
BIOMASS
NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI) > VEGETATION INDEX
LEAF CHARACTERISTICS
CANOPY CHARACTERISTICS
CANOPY TRANSMITTANCE
AFFORESTATION/REFORESTATION
VEGETATION COVER
RECLAMATION/REVEGETATION/RESTORATION
VEGETATION INDEX
AGRICULTURAL PLANT SCIENCE
PLANT CHARACTERISTICS
FOREST COMPOSITION/VEGETATION STRUCTURE
REFORESTATION

Data Distribution

File Format(s):

HDF5

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Spatial Information

Spatial Coverage: (S: -90, N: 90), (W: -180, E: 180)
Spatial Coverage Type: Not provided
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

GLOBAL

Temporal Information

Temporal Coverage: 2015-06-13 - Present

Platforms

Solar/Space Observation Satellites

DSCOVR

Deep Space Climate Observatory

EPIC

Earth Polychromatic Imaging Camera

Metadata Dates

Created on 2020-12-02

Last updated on 2023-08-17