@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix gsp: <http://www.opengis.net/ont/geosparql#> .
@prefix locn: <http://www.w3.org/ns/locn#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix schema: <http://schema.org/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21> a schema:DataDownload,
        schema:Dataset,
        dcat:Dataset,
        dcat:Distribution,
        foaf:Document ;
    dct:bibliographicCitation "Read the documentation, GEM terms of use and how to cite: https://data.g-e-m.dk/guides. Please get in touch with the GEM secretariat if you need help to cite correctly." ;
    dct:description "MarineBasis-Nuuk has been conducting year-round monthly hydrographic water column measurements at the standard monitoring station (GF3) since october 2005. The water column profiles are obtained using a SeaBird 19Plus Profiler equipped with SeaPoint Fluorometer and Li-Cor Spherical PAR sensor. The CTD profiler and sensors are calibrated app. yearly. More information on the dataset can be found in: Mortensen et al. (2022). Multidecadal water mass dynamics on the west Greenland shelf. Journal of Geophysical Research: Oceans, 127, e2022JC018724. https://doi.org/10.1029/2022JC018724" ;
    dct:identifier "https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21" ;
    dct:issued "2026-05-20T13:21:47.586307"^^xsd:dateTime,
        "2026-05-20T16:15:51.249082"^^xsd:dateTime ;
    dct:modified "2026-05-20T16:15:51.237538"^^xsd:dateTime,
        "2026-05-20T16:15:51.240803"^^xsd:dateTime ;
    dct:publisher [ a foaf:Agent ;
            foaf:homepage <https://data.g-e-m.dk> ;
            foaf:name "Greenland Ecosystem Monitoring" ],
        [ a foaf:Agent ;
            foaf:homepage <https://data.g-e-m.dk> ;
            foaf:name "Greenland Ecosystem Monitoring" ] ;
    dct:spatial [ a dct:Location ;
            locn:geometry "POLYGON ((-51.8833 64.1167, -51.8833 64.1167, -51.8833 64.1167, -51.8833 64.1167))"^^gsp:wktLiteral ] ;
    dct:temporal [ a dct:PeriodOfTime ;
            dcat:endDate "2024-12-11"^^xsd:date ;
            dcat:startDate "2005-10-05"^^xsd:date ],
        [ a dct:PeriodOfTime ;
            dcat:endDate "2024-12-11"^^xsd:date ;
            dcat:startDate "2005-10-05"^^xsd:date ] ;
    dct:title "CTD measurements" ;
    schema:about [ a schema:Thing ;
            schema:name "greenland-institute-of-natural-resources" ] ;
    schema:citation "Read the documentation, GEM terms of use and how to cite: https://data.g-e-m.dk/guides. Please get in touch with the GEM secretariat if you need help to cite correctly." ;
    schema:creator [ a schema:Organization ;
            schema:contactPoint [ a schema:ContactPoint ;
                    schema:contactType "customer service" ;
                    schema:name "University of Copenhagen (UCPH - Partner 3)" ;
                    schema:url "https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21" ] ;
            schema:name "University of Copenhagen (UCPH - Partner 3)" ] ;
    schema:dateModified "2026-05-20T16:15:51.237538" ;
    schema:datePublished "2020-01-01",
        "2020-01-01T00:00:00" ;
    schema:description "MarineBasis-Nuuk has been conducting year-round monthly hydrographic water column measurements at the standard monitoring station (GF3) since october 2005. The water column profiles are obtained using a SeaBird 19Plus Profiler equipped with SeaPoint Fluorometer and Li-Cor Spherical PAR sensor. The CTD profiler and sensors are calibrated app. yearly. More information on the dataset can be found in: Mortensen et al. (2022). Multidecadal water mass dynamics on the west Greenland shelf. Journal of Geophysical Research: Oceans, 127, e2022JC018724. https://doi.org/10.1029/2022JC018724" ;
    schema:distribution <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21> ;
    schema:identifier "https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21" ;
    schema:keywords "ARCTIC",
        "ARCTIC OCEAN",
        "CLIMATE INDICATORS",
        "COASTAL",
        "CTD",
        "ECOSYSTEMS",
        "GREENLAND",
        "MARINE ECOSYSTEMS",
        "OCEAN CHEMISTRY",
        "OCEANOGRAPHY" ;
    schema:license "https://creativecommons.org/licenses/by-sa/4.0/" ;
    schema:name "CTD measurements" ;
    schema:publisher [ a schema:Organization ;
            schema:contactPoint [ a schema:ContactPoint ;
                    schema:contactType "customer service" ;
                    schema:name "Greenland Ecosystem Monitoring" ;
                    schema:url "https://data.g-e-m.dk" ] ;
            schema:name "Greenland Ecosystem Monitoring" ] ;
    schema:spatialCoverage [ a schema:Place ;
            schema:geo [ a schema:GeoShape ;
                    schema:polygon "{\"type\": \"Polygon\", \"coordinates\": [[[-51.883331298828125, 64.11666870117188], [-51.883331298828125, 64.11666870117188], [-51.883331298828125, 64.11666870117188], [-51.883331298828125, 64.11666870117188]]]}" ] ] ;
    schema:temporalCoverage "2005-10-05/2024-12-11" ;
    schema:url "https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21" ;
    schema:variableMeasured [ a schema:PropertyValue ;
            schema:description "Longitude of monitoring station (decimal degrees west)" ;
            schema:name "Longitude (DD West)" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Longitude+(DD+West)> ;
            schema:unitText "DD West" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Longitude+(DD+West)> ],
        [ a schema:PropertyValue ;
            schema:description "Sampling annual julian day" ;
            schema:name "Julian Day" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Julian+Day> ;
            schema:unitText "Julian day" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Julian+Day> ],
        [ a schema:PropertyValue ;
            schema:description "Monitoring station ID" ;
            schema:name "Station ID" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Station+ID> ;
            schema:unitText "Station ID" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Station+ID> ],
        [ a schema:PropertyValue ;
            schema:description "Sampling date" ;
            schema:name "Date (YYYY-MM-DD)" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Date+(YYYY-MM-DD)> ;
            schema:unitText "YYYY-MM-DD" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Date+(YYYY-MM-DD)> ],
        [ a schema:PropertyValue ;
            schema:description "Density (calculated by SeaBird software)" ;
            schema:name "Density, Sigma-theta (kg m-3)" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Density%2C+Sigma-theta+(kg+m-3)> ;
            schema:unitText "Kg m-3" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Density%2C+Sigma-theta+(kg+m-3)> ],
        [ a schema:PropertyValue ;
            schema:description "Latitude of monitoring station (decimal degrees north)" ;
            schema:name "Latitude (DD North)" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Latitude+(DD+North)> ;
            schema:unitText "DD North" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Latitude+(DD+North)> ],
        [ a schema:PropertyValue ;
            schema:description "Fluorescence (SeaPoint Fluorometer - not corrected with in situ samples)" ;
            schema:name "Fluorescence (app. µg/l)" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Fluorescence+(app.+%C2%B5g%2Fl)> ;
            schema:unitText "app. µg/l" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Fluorescence+(app.+%C2%B5g%2Fl)> ],
        [ a schema:PropertyValue ;
            schema:description "Sampling time" ;
            schema:name "Time (HH:MM:SS)" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Time+(HH%3AMM%3ASS)> ;
            schema:unitText "HH:MM:SS" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Time+(HH%3AMM%3ASS)> ],
        [ a schema:PropertyValue ;
            schema:description "Turbidity (SeaPoint Turbidity Sensor - not corrected with in situ samples)" ;
            schema:name "Turbidity (FTU)" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Turbidity+(FTU)> ;
            schema:unitText "FTU" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Turbidity+(FTU)> ],
        [ a schema:PropertyValue ;
            schema:description "Photosynthetic Active Radiation (Li-Cor Spherical PAR sensor)" ;
            schema:name "PAR (µmol photons m-2 sec-1)" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=PAR+(%C2%B5mol+photons+m-2+sec-1)> ;
            schema:unitText "µmol photons m-2 sec-1" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=PAR+(%C2%B5mol+photons+m-2+sec-1)> ],
        [ a schema:PropertyValue ;
            schema:description "Temperature (SeaBird 19Plus profiler, temperature sensor)" ;
            schema:name "Temperature (C)" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Temperature+(C)> ;
            schema:unitText "deg C" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Temperature+(C)> ],
        [ a schema:PropertyValue ;
            schema:description "Temperature (SeaBird 19Plus profiler, temperature sensor)" ;
            schema:name "Potential temperature (C)" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Potential+temperature+(C)> ;
            schema:unitText "deg C" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Potential+temperature+(C)> ],
        [ a schema:PropertyValue ;
            schema:description "Salinity (SeaBird 19Plus profiler, salinity sensor)" ;
            schema:name "Salinity" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Salinity> ;
            schema:unitText "Salinity" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Salinity> ],
        [ a schema:PropertyValue ;
            schema:description "Average per decibar (SeaBird 19Plus profiler, pressure sensor)" ;
            schema:name "Pressure (avr. Db)" ;
            schema:propertyID <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Pressure+(avr.+Db)> ;
            schema:unitText "Avr. Decibar" ;
            schema:url <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21#column=Pressure+(avr.+Db)> ] ;
    schema:version "1" ;
    owl:versionInfo "1" ;
    dcat:accessURL <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21> ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "[{\"author_name\": \"Greenland Ecosystem Monitoring\"}]" ] ;
    dcat:distribution <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21> ;
    dcat:keyword "ARCTIC",
        "ARCTIC OCEAN",
        "CLIMATE INDICATORS",
        "COASTAL",
        "CTD",
        "ECOSYSTEMS",
        "GREENLAND",
        "MARINE ECOSYSTEMS",
        "OCEAN CHEMISTRY",
        "OCEANOGRAPHY" ;
    dcat:landingPage <https://data.g-e-m.dk/datasets/10.17897/KMEK-TK21> ;
    dcat:theme "greenland-institute-of-natural-resources" .