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    • VIIRS/NPP BRDF/Albedo Albedo Daily L3 Global 500m SIN Grid V001

    Metadata Updated: June 4, 2024

    The NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Bidirectional Reflectance Distribution Function (BRDF) and Albedo (VNP43IA3) Version 1 product provides albedo values at 500 meter (m) resolution for the bihemispherical reflectance white-sky albedo (WSA) and directional hemispherical reflectance black-sky albedo (BSA) at local solar noon. The VNP43IA3 product is produced daily using 16 days of VIIRS data and is weighted temporally to the ninth day, which is reflected in the file name. The VNP43 data products are designed to promote the continuity of NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS) BRDF/Albedo data product suite.

    The VNP43 algorithm uses the RossThick/Li-Sparse-Reciprocal (RTLSR) semi-empirical kernel-driven BRDF model, with the three kernel weights from (VNP43IA1) (https://doi.org/10.5067/VIIRS/VNP43IA1.001) to reconstruct surface anisotropic effects, correcting the directional reflectance to a common view geometry (VNP43IA4) (https://doi.org/10.5067/VIIRS/VNP43IA4.001), while also computing integrated black-sky albedo (BSA) at local solar noon and white-sky albedo (WSA) (VNP43IA3). Researchers can use the BRDF model parameters with a simple polynomial, to obtain black-sky albedo at any solar illumination angle. Likewise, both the BSA and WSA Science Dataset (SDS) layers can be used with a simple polynomial, to manually estimate instantaneous actual albedo (blue-sky albedo). Additional details regarding the methodology are available in the Algorithm Theoretical Basis Document (ATBD) (https://lpdaac.usgs.gov/documents/194/VNP43_ATBD_V1.pdf).

    The VNP43IA3 product provides a total of 9 SDS layers including: BSA, WSA, and mandatory quality layers for VIIRS imagery bands: I1, I2, and I3. A low-resolution browse image is also available showing retrievals of WSA for band I1 in JPEG format.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date November 12, 2020
    Metadata Updated Date June 4, 2024

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    Browse image for Earthdata Search

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 12, 2020
    Metadata Updated Date June 4, 2024
    Publisher LP DAAC
    Maintainer
    Identifier C1412449608-LPDAAC_ECS
    Data First Published 2018-11-17
    Language en-US
    Data Last Modified 2018-11-17
    Category NPP-JPSS, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.nasa.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Citation Crystal Schaaf, Zhuosen Wang, Xiaoyang Zhang, Alan Strahler . 2018-11-17. VNP43IA3. Version 001. VIIRS/NPP BRDF/Albedo Albedo Daily L3 Global 500m SIN Grid V001 . Sioux Falls, South Dakota, USA. Archived by National Aeronautics and Space Administration, U.S. Government, NASA EOSDIS Land Processes Distributed Active Archive Center. https://doi.org/10.5067/VIIRS/VNP43IA3.001 . https://doi.org/10.5067/VIIRS/VNP43IA3.001. Digital Science Data. This data set was provided by the NASA/NOAA NPP Project. The DOI landing page provides citations in APA and Chicago styles. .
    Creator Crystal Schaaf, Zhuosen Wang, Xiaoyang Zhang, Alan Strahler
    Data Presentation Form Digital Science Data
    Graphic Preview Description Browse image for Earthdata Search
    Graphic Preview File https://e4ftl01.cr.usgs.gov/WORKING/BRWS/Browse.001/2019.07.02/BROWSE.VNP43IA3.A2019175.h18v04.001.2019183075449.1.jpg?_ga=2.75253586.116070394.1561987039-1109527761.1561753117
    Harvest Object Id d903159b-7875-416f-92cc-1ba3c87a76de
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/VIIRS/VNP43IA3.001
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Release Place Sioux Falls, South Dakota, USA
    Series Name VNP43IA3
    Source Datajson Identifier True
    Source Hash 3a879398335b105d75623f9abb47cd80b71d3007bac24ebce0cc0b7a66d25cad
    Source Schema Version 1.1
    Spatial
    Temporal 2012-01-17T00:00:00Z/2024-06-03T00:00:00Z

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