@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/091d038f-7cc6-41eb-945c-16efbce4b18c> a dcat:Dataset ;
    dct:description "The Global Monthly and Seasonal Urban and Land Backscatter Time Series, 1993-2020, is a multi-sensor, multi-decadal, data set of global microwave backscatter, for 1993 to 2020. It assembles data from C-band sensors onboard the European Remote Sensing Satellites (ERS-1 and ERS-2) covering 1993-2000, Advanced Scatterometer (ASCAT) onboard EUMETSAT satellites for 2007-2020, and the Ku-band sensor onboard the QuikSCAT satellite for 1999-2009, onto a common spatial grid (0.05 degree latitude /longitude resolution) and time step (both monthly and seasonal). Data are provided for all land (except high latitudes and islands), and for urban grid cells, based on a specific masking that removes grid cells with > 50% open water or < 20% built land. The all-land data allows users to choose and evaluate other urban masks. There is an offset between C-band and Ku-band backscatter from both vegetated and urban surfaces that is not spatially constant. There is a strong linear correlation (overall R-squared value = 0.69) between 2015 ASCAT urban backscatter and a continental-scale gridded product of building volume, across 8,450 urban grid cells (0.05 degree resolution) from large cities in Europe, China, and the United States." ;
    dct:identifier "C2492953186-SEDAC" ;
    dct:issued "2022-09-30"^^xsd:date ;
    dct:language "{en-US}" ;
    dct:modified "2022-09-30"^^xsd:date ;
    dct:publisher <https://data.nasa.gov/organization/dbb294e4-8597-44f5-aaf4-c0baac12cdbc> ;
    dct:spatial [ a dct:Location ] ;
    dct:title "Global Monthly and Seasonal Urban and Land Backscatter Time Series, 1993-2020" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "undefined" ;
            vcard:hasEmail <mailto:metadata@ciesin.columbia.edu> ] ;
    dcat:distribution <https://data.nasa.gov/dataset/091d038f-7cc6-41eb-945c-16efbce4b18c/resource/0d350b6d-1249-40a9-94e9-853ff1aa1ba1>,
        <https://data.nasa.gov/dataset/091d038f-7cc6-41eb-945c-16efbce4b18c/resource/c77d0c5b-676e-45db-b48a-5a867286890c>,
        <https://data.nasa.gov/dataset/091d038f-7cc6-41eb-945c-16efbce4b18c/resource/ccdea64c-ff3c-4da2-a0e1-91602d5343ee> ;
    dcat:keyword "atmosphere",
        "atmospheric-radiation",
        "earth-science" ;
    dcat:theme <%7BUSPAT>,
        <geospatial%7D> .

<https://data.nasa.gov/dataset/091d038f-7cc6-41eb-945c-16efbce4b18c/resource/0d350b6d-1249-40a9-94e9-853ff1aa1ba1> a dcat:Distribution ;
    dct:description "Search results for publications that cite this dataset by its DOI." ;
    dct:format "HTML" ;
    dct:identifier "0d350b6d-1249-40a9-94e9-853ff1aa1ba1" ;
    dct:issued "2025-04-23T22:55:16.626997"^^xsd:dateTime ;
    dct:modified "2025-04-23T22:55:16.619591"^^xsd:dateTime ;
    dct:title "Google Scholar search results" ;
    dcat:accessURL <https://scholar.google.com/scholar?q=10.7927%2Fgr2e-dh86> ;
    dcat:mediaType "text/html" .

<https://data.nasa.gov/dataset/091d038f-7cc6-41eb-945c-16efbce4b18c/resource/c77d0c5b-676e-45db-b48a-5a867286890c> a dcat:Distribution ;
    dct:description "Sample browse graphic of the data set." ;
    dct:format "JPEG" ;
    dct:identifier "c77d0c5b-676e-45db-b48a-5a867286890c" ;
    dct:issued "2025-04-23T22:55:16.627001"^^xsd:dateTime ;
    dct:modified "2025-04-23T22:55:16.619725"^^xsd:dateTime ;
    dct:title "Get a related visualization" ;
    dcat:accessURL <https://sedac.ciesin.columbia.edu/downloads/maps/urbanspatial/urbanspatial-urban-land-backscatter-time-series-1993-2020/sedac-logo.jpg> ;
    dcat:mediaType "image/jpeg" .

<https://data.nasa.gov/dataset/091d038f-7cc6-41eb-945c-16efbce4b18c/resource/ccdea64c-ff3c-4da2-a0e1-91602d5343ee> a dcat:Distribution ;
    dct:description "Documentation Page" ;
    dct:format "HTML" ;
    dct:identifier "ccdea64c-ff3c-4da2-a0e1-91602d5343ee" ;
    dct:issued "2025-04-23T22:55:16.627004"^^xsd:dateTime ;
    dct:modified "2025-04-23T22:55:16.619975"^^xsd:dateTime ;
    dct:title "View documentation related to this dataset" ;
    dcat:accessURL <https://sedac.ciesin.columbia.edu/data/set/urbanspatial-urban-land-backscatter-time-series-1993-2020/docs> ;
    dcat:mediaType "text/html" .

<https://data.nasa.gov/organization/dbb294e4-8597-44f5-aaf4-c0baac12cdbc> a org:Organization ;
    skos:prefLabel "NASA" ;
    foaf:name "NASA" .