{
  "@type": "dcat:Dataset",
  "accessLevel": "public",
  "bureauCode": [
    "026:00"
  ],
  "contactPoint": {
    "@type": "vcard:Contact",
    "fn": "Earthdata Forum",
    "hasEmail": "mailto:earthdata-support@nasa.gov"
  },
  "description": "This dataset provides global monthly average gross primary productivity (GPP; g carbon/m2/d) modeled at 8 km spatial resolution for each of the 35 years from 1982-2016. GPP is based on the well-known Monteith light use efficiency (LUE) equation but was improved with optimized spatially and temporally explicit LUE values derived from selected FLUXNET tower site data. Optimized LUE was extrapolated to a consistent 8 km resolution global grid using multiple explanatory variables representing climatic, landscape, and vegetation factors influencing LUE and GPP. Global gridded long-term daily GPP was derived using the optimized LUE, Global Inventory Modeling and Mapping Studies (GIMMS3g) canopy fraction of photosynthetically active radiation (FPAR), and Modern-Era Retrospective analysis for Research and Applications, Version 2, (MERRA-2) meteorological information. These data will improve satellite-based estimation and understanding of GPP using a refined LUE model framework.",
  "distribution": [
    {
      "@type": "dcat:Distribution",
      "conformsTo": "http://www.isotc211.org/2005/gmi",
      "description": "The metadata's original source.",
      "downloadURL": "https://cmr.earthdata.nasa.gov/search/concepts/C2764742564-ORNL_CLOUD.iso19115",
      "format": "ISO",
      "mediaType": "text/xml",
      "title": "Original Metadata"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://daac.ornl.gov/VEGETATION/guides/Global_Monthly_GPP_Fig1.png",
      "format": "PNG",
      "mediaType": "image/png"
    },
    {
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      "downloadURL": "https://data.ornldaac.earthdata.nasa.gov/protected/bundle/Global_Monthly_GPP_1789.zip",
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      "mediaType": "application/zip"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://data.ornldaac.earthdata.nasa.gov/public/global_vegetation/Global_Monthly_GPP/comp/Global_Monthly_GPP.pdf",
      "format": "PDF",
      "mediaType": "application/pdf"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://doi.org/10.3334/ORNLDAAC/1789",
      "format": "HTML",
      "mediaType": "text/html"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://opendap.earthdata.nasa.gov/",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://search.earthdata.nasa.gov/search/granules?p=C2764742564-ORNL_CLOUD",
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      "mediaType": "application/octet-stream"
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  ],
  "identifier": "10.3334/ORNLDAAC/1789",
  "keyword": [
    "earth-science-ecological-dynamics-biosphere-ecosystem-functions",
    "earth-science-land-use-land-cover-land-surface-land-use-land-cover-classification",
    "earth-science-soils-land-surface-soil-productivity",
    "earth-science-vegetation-biosphere-photosynthetically-active-radiation",
    "earth-science-vegetation-biosphere-vegetation-cover"
  ],
  "license": "https://www.usa.gov/government-works",
  "modified": "2026-09-01",
  "programCode": [
    "026:000"
  ],
  "publisher": {
    "@type": "org:Organization",
    "name": "ORNL_DAAC"
  },
  "spatial": "[\"CARTESIAN\", [{\"WestBoundingCoordinate\": -180.0, \"NorthBoundingCoordinate\": 90.0, \"EastBoundingCoordinate\": 180.0, \"SouthBoundingCoordinate\": -90.0}]]",
  "temporal": "1982-01-01/2017-01-01",
  "theme": [
    "Earth Science"
  ],
  "title": "Global Monthly GPP from an Improved Light Use Efficiency Model, 1982-2016"
}