VNP21_001

VIIRS/NPP Land Surface Temperature and Emissivity 6-Min L2 Swath 750m V001

Version 001
  • Abstract
    The NASA Suomi National Polar-Orbiting Partnership (S-NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Land Surface Temperature and Emissivity (LST&E) Version 1 swath product (VNP21) is produced daily in 6-minute temporal increments of satellite acquisition. The VNP21 product uses a physics-based algorithm to dynamically retrieve both the LST and emissivity simultaneously for VIIRS thermal infrared bands M14 (8.55 µm), M15 (10.76 µm), and M16 (12 µm) at a spatial resolution of 750 meters. The VNP21 product is developed synergistically with the Moderate Resolution Imaging Spectroradiometer (MODIS) LST&E Version 6 product (MOD21) using the same input atmospheric products and algorithmic approach based on the ASTER Temperature Emissivity Separation (TES) technique. The TES algorithm is combined with an improved Water Vapor Scaling (WVS) atmospheric correction scheme to stabilize the retrieval during very warm and humid conditions. The overall objective for NASA VIIRS products is to ensure the algorithms and products are compatible with the MODIS Terra and Aqua algorithms to promote the continuity of the Earth Observation System (EOS) mission. VIIRS LST&E products are available two months after acquisition due to latency of data inputs. Additional details regarding the method used to create this Level 2 (L2) product are available in the Algorithm Theoretical Basis Document (ATBD). Provided in the VNP21 product are layers for LST, quality control, emissivity for bands M14, M15, and M16, LST&E errors, view angle, ASTER Global Emissivity Dataset (GED), Precipitable Water Vapor (PWV), ocean-land mask, latitude, and longitude. A low-resolution browse image for LST is also available for each VNP21 granule.
  • Purpose
    Science Research
  • Version Description
    Collection Version 1 Processing and Reprocessing
  • DOI

    10.5067/VIIRS/VNP21.001

    https://doi.org

Data Identification Fields:

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    Data Dates
    Creation
    Last Revision
    Processing Level

    2

    Sensor Measurements

    Quality
    Collection Progress

    Active

    Access Constraints

    None

Related URLs
    Science Keywords
    • EARTH SCIENCE
    • LAND SURFACE
    • SURFACE THERMAL PROPERTIES
    • LAND SURFACE TEMPERATURE
    • EARTH SCIENCE
    • LAND SURFACE
    • SURFACE RADIATIVE PROPERTIES
    • EMISSIVITY

Acquisition Information Fields:

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Platforms
  • Spacecraft
    SUOMI-NPP
    Instruments
    • VIIRS
Projects
Project Short Name Campaigns Project Dates
NPP-JPSS
  • NPP-JPSS
 No dates provided.

Temporal Information Fields:

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL CARTESIAN GEODETIC
Location Keywords
    • GEOGRAPHIC REGION
    • GLOBAL

Data Centers

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  • LP DAAC
    ARCHIVER
    Land Processes Distributed Active Archive Center

    U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
    Sioux Falls, South Dakota 57198

    M-F, 8 a.m. to 4 p.m. Central Time
    • 605-594-6116
    • 866-573-3222
    • Email
    Contact Details

    LP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.

    The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.

    https://lpdaac.usgs.gov/
    • Home Page
  • NASA/GSFC/SED/ESD/TISL/LandSIPS
    PROCESSOR
    Land Science Investigator-led Processing System, Terrestrial Information Systems Laboratory, Earth Sciences Division, Sciences and Exploration Directorate, Goddard Space Flight Center, NASA

    This data center does not have any addresses listed.

    This data center does not have any contact mechanisms listed.

    https://landweb.modaps.eosdis.nasa.gov/NPP_QA/
    • Home Page

Data Contacts

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  • LP DAAC User Services
    User Services
    LP DAAC User Services

    LP DAAC

    U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center
    Sioux Falls, South Dakota 57198

    M-F, 8 a.m. to 4 p.m. Central Time
    • 605-594-6116
    • 866-573-3222
    • Email
    Contact Details

    LP DAAC User Services is the point of contact for answering questions concerning data products, data access, and online applications.

    The LP DAAC website provides detailed information on discovery, distribution, access, and support of land data products.

    https://lpdaac.usgs.gov/
    • Home Page

Collection Citations Fields:

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    Collection Citations
    • Collection citation title not provided

      This data set was provided by the NASA/NOAA NPP Project.

Metadata Dates
Creation
Last Revision