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    • VIIRS/NPP Surface Reflectance Daily L3 Global 0.05 Deg CMG NRT

    Metadata Updated: October 1, 2024

    TheVNP09CMG_NRT is a Near Real Time (NRT) daily surface reflectance Climate Modeling Grid Version 2 product which provides an estimate of land surface reflectance from the NASA/NOAA Suomi National Polar-orbiting Partnership (Suomi NPP) VIIRS sensor. Data are provided for three imagery bands (I1-I3) and nine moderate resolution bands (M1-M5, M7, M8, M10, M11) at 0.05 degree (~5,600 meter) resolution. The data are corrected for atmospheric conditions such as the effects of molecular gases, including ozone and water vapor, and for the effects of atmospheric aerosols. This product uses a weighted average of the best quality observation and is formatted as a CMG for use in climate simulation models. This product includes the twelve reflectance bands, five moderate resolution brightness temperature bands (M12-M16) and information layers representing relative azimuth angle, sensor zenith angle, solar zenith angle, reflectance band quality, time of day, and number mapping.

    Surface reflectance is obtained by adjusting top-of-atmosphere reflectance to compensate for atmospheric effects. Corrections are made for the effects of molecular gases, including ozone and water vapor, and for the effects of atmospheric aerosols. The inputs to the surface reflectance algorithm include top-of-atmosphere reflectance for the VIIRS visible bands (VNP02MOD, VNP02IMG), the VIIRS cloud mask and aerosol product (NPP-CMIP_L2), aerosol optical thickness (NPP_VAOTIP_L2, NPP_VAMIP_L2), and atmospheric data obtained from a reanalysis (surface pressure, atmospheric precipitable water, and ozone concentration).

    All surface reflectance products are produced for daytime conditions only. The product is produced under all atmospheric conditions except for night and oceans. Pixels when not produced are replaced by fill values in the Level-2 and Level-2G products.

    For more information read Suomi-NPP VIIRS Surface Reflectance User's Guide at https://viirsland.gsfc.nasa.gov/PDF/VIIRS_Surf_Refl_UserGuide_v2.0.pdf

    or

    visit VIIRS Land website at https://viirsland.gsfc.nasa.gov/Products/NASA/ReflectanceESDR.html

    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 October 18, 2023
    Metadata Updated Date October 1, 2024

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date October 18, 2023
    Metadata Updated Date October 1, 2024
    Publisher NASA/GSFC/EOS/ESDIS/LANCE MODIS
    Maintainer
    Identifier C2780134650-LANCEMODIS
    Data First Published 2023-10-10
    Language en-US
    Data Last Modified 2024-09-25
    Category LANCE, 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 LANCEMODIS. 2023-10-10. VIIRS/NPP Surface Reflectance Daily L3 Global 0.05 Deg CMG NRT. Version 2. NASA GSFC LANCE. Archived by National Aeronautics and Space Administration, U.S. Government, LANCEMODIS. https://doi.org/10.5067/VIIRS/VNP09CMG_NRT.002. https://earthdata.nasa.gov/earth-observation-data/near-real-time/download-nrt-data/viirs-nrt.
    Creator LANCEMODIS
    Harvest Object Id b01ee454-1b56-42f6-94e1-9a8fd1e28cda
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/VIIRS/VNP09CMG_NRT.002
    Metadata Type geospatial
    Old Spatial -180.0 -80.0 180.0 80.0
    Program Code 026:001
    Release Place NASA GSFC LANCE
    Source Datajson Identifier True
    Source Hash 6a9db96c84b25dc4f1cef7b5def96a5c0b9b0ae5b97bca84a06cff1ffd29b84a
    Source Schema Version 1.1
    Spatial
    Temporal 2023-10-10T00:00:00Z/2024-09-30T00:00:00Z

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