@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 "The EddyFen station measures carbon dioxide- and methane fluxes via eddy covariance method in a low Arctic fen site (40 m.a.s.l) close to InteractFen (Meteorology, Soil Properties, Snow Properties; 2011-) and SoilFen (Meteorology, Soil Properties; 2007-) and the former station AutochambersFen (Flux Monitoring; 2007-2021). The station was established in 2007 and originally instrumented with a LI7000 CO2/H2O analyzer and Gill 1210R3 sonic anemometer (2007-2018). In 2018 the station was relocated a few meters and upgraded with a LI7200RS closed-path gas analyzer and a SmartFlux2 processing system (2018-). The Gill HS-50 sonic anemometer replaced the previous model in 2019 (2019-), and an LI7700 open-path CH4 Analyzer was added in 2024 (2024-). Due to the relocation in 2018, the CO2 flux time series are divided into two datasets (pre-2018 and post-2018). This dataset contains quality-controlled fluxes of CO2, LE and H; CO2- and H2O concentrations; friction velocity; wind speed and -direction from 2018 onwards. In 2021 the station was labelled ICOS (Integrated Carbon Observation System) associated, and data are processed following ICOS standards, with a logging frequency of 20 Hz and aggregated as 30-minute averages (UTC-3 West Greenlandic Winter Time). From 2007 to 2023, data were collected only during the summer field season (approximately May–October) due to winter power limitations. Since 2024, continuous year-round data collection has been enabled, though occasional data gaps remain in the dark months from November to February. Pre-2018 time series containing CO2 flux data is available under the dataset under \"EddyFen\" and CH4 fluxes are expected to be made available as a separate dataset soon." ; dct:identifier "https://data.g-e-m.dk/datasets/10.17897/CDWM-TV93" ; dct:issued "2026-05-20T13:17:45.061344"^^xsd:dateTime, "2026-05-20T16:14:16.267333"^^xsd:dateTime ; dct:modified "2026-05-20T16:14:16.257875"^^xsd:dateTime, "2026-05-20T16:14:16.260523"^^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 ((-51.3860 64.1309, -51.3860 64.1309, -51.3860 64.1309, -51.3860 64.1309))"^^gsp:wktLiteral ] ; dct:temporal [ a dct:PeriodOfTime ; dcat:endDate "2023-08-21"^^xsd:date ; dcat:startDate "2019-09-01"^^xsd:date ], [ a dct:PeriodOfTime ; dcat:endDate "2023-08-21"^^xsd:date ; dcat:startDate "2019-09-01"^^xsd:date ] ; dct:title "EddyFen_2018-" ; 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/CDWM-TV93" ] ; schema:name "University of Copenhagen (UCPH - Partner 3)" ] ; schema:dateModified "2026-05-20T16:14:16.257875" ; schema:datePublished "2020-01-01", "2020-01-01T00:00:00" ; schema:description "The EddyFen station measures carbon dioxide- and methane fluxes via eddy covariance method in a low Arctic fen site (40 m.a.s.l) close to InteractFen (Meteorology, Soil Properties, Snow Properties; 2011-) and SoilFen (Meteorology, Soil Properties; 2007-) and the former station AutochambersFen (Flux Monitoring; 2007-2021). The station was established in 2007 and originally instrumented with a LI7000 CO2/H2O analyzer and Gill 1210R3 sonic anemometer (2007-2018). In 2018 the station was relocated a few meters and upgraded with a LI7200RS closed-path gas analyzer and a SmartFlux2 processing system (2018-). The Gill HS-50 sonic anemometer replaced the previous model in 2019 (2019-), and an LI7700 open-path CH4 Analyzer was added in 2024 (2024-). Due to the relocation in 2018, the CO2 flux time series are divided into two datasets (pre-2018 and post-2018). This dataset contains quality-controlled fluxes of CO2, LE and H; CO2- and H2O concentrations; friction velocity; wind speed and -direction from 2018 onwards. In 2021 the station was labelled ICOS (Integrated Carbon Observation System) associated, and data are processed following ICOS standards, with a logging frequency of 20 Hz and aggregated as 30-minute averages (UTC-3 West Greenlandic Winter Time). From 2007 to 2023, data were collected only during the summer field season (approximately May–October) due to winter power limitations. Since 2024, continuous year-round data collection has been enabled, though occasional data gaps remain in the dark months from November to February. Pre-2018 time series containing CO2 flux data is available under the dataset under \"EddyFen\" and CH4 fluxes are expected to be made available as a separate dataset soon." ; schema:distribution ; schema:identifier "https://data.g-e-m.dk/datasets/10.17897/CDWM-TV93" ; schema:keywords "ARCTIC", "ARCTIC TUNDRA", "CARBON FLUX", "CLIMATE INDICATORS", "ECOSYSTEMS", "GEOGRAPHY", "GREENLAND", "PHYSICAL GEOGRAPHY" ; schema:license "https://creativecommons.org/licenses/by-sa/4.0/" ; schema:name "EddyFen_2018-" ; 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\": [[[-51.386009216308594, 64.13087463378906], [-51.386009216308594, 64.13087463378906], [-51.386009216308594, 64.13087463378906], [-51.386009216308594, 64.13087463378906]]]}" ] ] ; schema:temporalCoverage "2019-09-01/2023-08-21" ; schema:url "https://data.g-e-m.dk/datasets/10.17897/CDWM-TV93" ; schema:variableMeasured [ a schema:PropertyValue ; schema:description "West Greenland Time (UTC-3). 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