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    • MODIS/Aqua Net Evapotranspiration Gap-Filled Yearly L4 Global 500m SIN Grid V061

    Metadata Updated: June 4, 2024

    The MYD16A3GF Version 6.1 Evapotranspiration/Latent Heat Flux (ET/LE) product is a year-end gap-filled yearly composite dataset produced at 500 meter (m) pixel resolution. The improved algorithm is based on the logic of the Penman-Monteith equation, which includes inputs of daily meteorological reanalysis data along with Moderate Resolution Imaging Spectroradiometer (MODIS) remotely sensed data products such as vegetation property dynamics, albedo, and land cover.

    The MYD16A3GF will be generated at the end of each year when the entire yearly 8-day MYD15A2H (https://doi.org/10.5067/MODIS/MYD15A2H.061) is available. Hence, the gap-filled MYD16A3GF is the improved MYD16, which has cleaned the poor-quality inputs from 8-day Leaf Area Index and Fraction Photosynthetically Active Radiation (LAI/FPAR) based on the Quality Control (QC) label for every pixel. If any LAI/FPAR pixel did not meet the quality screening criteria, its value is determined through linear interpolation. However, users cannot get MYD16A3GF in near-real time because it will be generated only at the end of a given year.

    Provided in the MYD16A3GF product are layers for composited ET, LE, Potential ET (PET), and Potential LE (PLE) along with a quality control layer. Two low resolution browse images, ET and LE, are also available for each MYD16A3GF granule.

    The pixel values for the two Evapotranspiration layers (ET and PET) are the sum for all days within the defined year, and the pixel values for the two Latent Heat layers (LE and PLE) are the average of all days within the defined year.

    Validation at stage 1 (https://landweb.modaps.eosdis.nasa.gov/cgi-bin/QA_WWW/newPage.cgi?fileName=maturity) has been achieved for MODIS Evapotranspiration products.

    Improvements/Changes from Previous Changes * The Version 6.1 Level-1B (L1B) products have been improved by undergoing various calibration changes that include: changes to the response-versus-scan angle (RVS) approach that affects reflectance bands for Aqua and Terra MODIS, corrections to adjust for the optical crosstalk in Terra MODIS infrared (IR) bands, and corrections to the Terra MODIS forward look-up table (LUT) update for the period 2012 - 2017. * A polarization correction has been applied to the L1B Reflective Solar Bands (RSB). * The product uses Climatology LAI/FPAR as back up to the operational LAI/FPAR.

    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 April 27, 2023
    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 April 27, 2023
    Metadata Updated Date June 4, 2024
    Publisher LP DAAC
    Maintainer
    Identifier C2565794069-LPCLOUD
    Data First Published 2021-03-15
    Language en-US
    Data Last Modified 2021-03-15
    Category Aqua, 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 Steve Running, Qiaozhen Mu, Maosheng Zhao, Alvaro Moreno. 2021-03-15. MODIS/Aqua Net Evapotranspiration Gap-Filled Yearly L4 Global 500m SIN Grid V061. 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/MODIS/MYD16A3GF.061. https://doi.org/10.5067/MODIS/MYD16A3GF.061. The DOI landing page provides citations in APA and Chicago styles..
    Creator Steve Running, Qiaozhen Mu, Maosheng Zhao, Alvaro Moreno
    Graphic Preview Description Browse image for Earthdata Search
    Graphic Preview File https://cmr.earthdata.nasa.gov/browse-scaler/browse_images/granules/G2637097422-LPCLOUD?h=85&w=85
    Harvest Object Id b68138e2-7984-4151-9537-11f1c95cc5e0
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.5067/MODIS/MYD16A3GF.061
    Metadata Type geospatial
    Old Spatial -180.0 -90.0 180.0 90.0
    Program Code 026:001
    Release Place Sioux Falls, South Dakota, USA
    Source Datajson Identifier True
    Source Hash a22852b29eef8a21b9cae8fbc361d1dfcf7e307bb87867a38ed330fb9898227c
    Source Schema Version 1.1
    Spatial
    Temporal 2002-07-04T00:00:00Z/2024-06-03T00:00:00Z

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