@prefix dcat: . @prefix dct: . @prefix foaf: . @prefix gsp: . @prefix locn: . @prefix owl: . @prefix schema: . @prefix vcard: . @prefix xsd: . 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. Water samples are collected using a Niskin bottle with manual closing system using a weight (messenger). Sampling depth is represented by length of sampling wire out measured using a meter-wheel (not calibrated by depth sensor)." ; dct:identifier "https://data.g-e-m.dk/datasets/10.17897/3NQX-FA50" ; dct:issued "2026-05-20T13:21:49.978311"^^xsd:dateTime, "2026-05-20T16:15:51.704621"^^xsd:dateTime ; dct:modified "2026-05-20T16:15:51.694502"^^xsd:dateTime, "2026-05-20T16:15:51.696940"^^xsd:dateTime ; dct:publisher [ a foaf:Agent ; foaf:homepage ; foaf:name "Greenland Ecosystem Monitoring" ], [ a foaf:Agent ; foaf:homepage ; 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 "Nitrate+Nitrite (NOx) concentration" ; 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/10.17897/3NQX-FA50" ] ; schema:name "University of Copenhagen (UCPH - Partner 3)" ] ; schema:dateModified "2026-05-20T16:15:51.694502" ; 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. Water samples are collected using a Niskin bottle with manual closing system using a weight (messenger). Sampling depth is represented by length of sampling wire out measured using a meter-wheel (not calibrated by depth sensor)." ; schema:distribution ; schema:identifier "https://data.g-e-m.dk/datasets/10.17897/3NQX-FA50" ; 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 "Nitrate+Nitrite (NOx) concentration" ; 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/10.17897/3NQX-FA50" ; schema:variableMeasured [ a schema:PropertyValue ; schema:description "Sampling date" ; schema:name "Date (YYYY-MM-DD)" ; schema:propertyID ; schema:unitText "YYYY-MM-DD" ; schema:url ], [ a schema:PropertyValue ; schema:description "Concentration of NOx, which is Nitrate (NO3) plus Nitrite (NO2). Concentrations are measured by the vanadium chloride reduction method." ; schema:name "NOx (µmol/l)" ; schema:propertyID ; schema:unitText "µmol/L" ; schema:url ], [ a schema:PropertyValue ; schema:description "Longitude of monitoring station (decimal degrees west)" ; schema:name "Longitude (DD West)" ; schema:propertyID ; schema:unitText "DD West" ; schema:url ], [ a schema:PropertyValue ; schema:description "Latitude of monitoring station (decimal degrees north)" ; schema:name "Latitude (DD North)" ; schema:propertyID ; schema:unitText "DD North" ; schema:url ], [ a schema:PropertyValue ; schema:description "Monitoring station ID" ; schema:name "Station ID" ; schema:propertyID ; schema:unitText "Station ID" ; schema:url ], [ a schema:PropertyValue ; schema:description "Instrument type used: 2005-2014 (19/3) NOx Analyzer and 2014 (23/4) Spectrophotometer." ; schema:name "Instrument" ; schema:propertyID ; schema:unitText "Instrument" ; schema:url ], [ a schema:PropertyValue ; schema:description "Sampling time" ; schema:name "Time (HH:MM:SS)" ; schema:propertyID ; schema:unitText "HH:MM:SS" ; schema:url ], [ a schema:PropertyValue ; schema:description "Depth (length of sampling wire out)" ; schema:name "Depth (m)" ; schema:propertyID ; schema:unitText "Meter" ; schema:url ] ; schema:version "1" ; owl:versionInfo "1" ; dcat:accessURL ; dcat:contactPoint [ a vcard:Organization ; vcard:fn "[{\"author_name\": \"Greenland Ecosystem Monitoring\"}]" ] ; dcat:distribution ; dcat:keyword "ARCTIC", "ARCTIC OCEAN", "CLIMATE INDICATORS", "COASTAL", "CTD", "ECOSYSTEMS", "GREENLAND", "MARINE ECOSYSTEMS", "OCEAN CHEMISTRY", "OCEANOGRAPHY" ; dcat:landingPage ; dcat:theme "greenland-institute-of-natural-resources" .