@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix org: <http://www.w3.org/ns/org#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.nasa.gov/dataset/cfdf9c69-946a-4c2b-9782-6774d0dc853c> a dcat:Dataset ;
    dct:description """The NOAA-21 Visible Infrared Imaging Radiometer Suite (VIIRS) Gross and Net Primary Production (NPP) Gap-Filled (VJ217A3GF) Version 2 data product is a cumulative composite of Gross Primary Productivity (GPP) values based on the radiation-use efficiency concept that is potentially used as inputs to data models to calculate terrestrial energy, carbon, water cycle processes, and biogeochemistry of vegetation. VJ217A3GF is a yearly composite at 500 meter spatial resolution delivered as a gridded Level 4 (L4) product in Sinusoidal projection.

The VJ217A3GF will be generated at the end of each year when the entire yearly 8-day VJ215A2H is available. Hence, the gap-filled VJ217A3GF is the improved VJ217A2, which has cleaned the poor-quality inputs from 8-day Leaf Area Index and Fraction of 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 VJ217A3GF in near-real time because it will be generated only at the end of a given year.

Provided in the VJ217A3GF product are layers for GPP, NPP, along with a quality control layer. A low resolution browse image for GPP is also available for each VJ217A3GF granule.

Known Issues
* For complete information about known issues please refer to the [MODIS/VIIRS Land Quality Assessment website](https://landweb.modaps.eosdis.nasa.gov/knownissue?sensor=VIIRS&sat=J2).""" ;
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    dct:modified "2026-11-02T22:15:59+00:00"^^xsd:dateTime ;
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    dct:spatial [ a dct:Location ] ;
    dct:title "VIIRS/JPSS2 Gross and Net Primary Production Gap-Filled Yearly L4 Global 500m SIN Grid V002" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Earthdata Forum" ;
            vcard:hasEmail <mailto:earthdata-support@nasa.gov> ] ;
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        "earth-science-precipitation-atmosphere-precipitation-profiles",
        "earth-science-vegetation-biosphere-vegetation-productivity" ;
    dcat:theme <%7B%22Earth%20Science%22%7D> .

<https://data.nasa.gov/dataset/cfdf9c69-946a-4c2b-9782-6774d0dc853c/resource/5bb7e186-483f-438e-82d3-55ae7824c408> a dcat:Distribution ;
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<https://data.nasa.gov/dataset/cfdf9c69-946a-4c2b-9782-6774d0dc853c/resource/680b7b8d-6ac8-4c35-a1c1-c4015a8e6757> a dcat:Distribution ;
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<https://data.nasa.gov/dataset/cfdf9c69-946a-4c2b-9782-6774d0dc853c/resource/7bc6dbbe-7de6-4f18-b264-c5e52b9514c0> a dcat:Distribution ;
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    dcat:accessURL <https://www.earthdata.nasa.gov/centers/lp-daac> ;
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    dct:title "Original Metadata" ;
    dcat:accessURL <https://cmr.earthdata.nasa.gov/search/concepts/C2885062058-LPCLOUD.iso19115> ;
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<https://data.nasa.gov/dataset/cfdf9c69-946a-4c2b-9782-6774d0dc853c/resource/c21c61c1-ca2a-41a3-be43-d5b7ec35c28e> a dcat:Distribution ;
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    dcat:accessURL <https://lpdaac.usgs.gov/documents/2255/VNP17_User_Guide_V1.pdf> ;
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<https://data.nasa.gov/dataset/cfdf9c69-946a-4c2b-9782-6774d0dc853c/resource/daf83696-5b8f-46ba-9ca9-11d50c11b867> a dcat:Distribution ;
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    dct:modified "2026-08-25T10:14:34.414220"^^xsd:dateTime ;
    dcat:accessURL <https://doi.org/10.5067/VIIRS/VJ217A3GF.002> ;
    dcat:mediaType "application/octet-stream" .

<https://data.nasa.gov/dataset/cfdf9c69-946a-4c2b-9782-6774d0dc853c/resource/eb967750-e40c-4427-9f47-e3c9d6fc5d50> a dcat:Distribution ;
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    dct:identifier "eb967750-e40c-4427-9f47-e3c9d6fc5d50" ;
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    dct:modified "2026-08-25T10:14:34.414646"^^xsd:dateTime ;
    dcat:accessURL <https://viirsland.gsfc.nasa.gov/Val_overview.html> ;
    dcat:mediaType "text/html" .

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    foaf:name "NASA" .