@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 "Eddy covariance flux measurements has taken place at the site MM2 since 2007. The mast (3 m high) is located on a wet fen area called Rylekæret, about 1.5 km North of the Climate station (operated by ClimateBasis). Between 2007 and 2011 the system consisted of a LI6262 and Gill R2. Since 2012 a LI7200 and Gill HS are used. Data from LI6262+Gill R2 was logged at 20 Hz in Edisol software and fluxes calculated on halfhourly basis using EdiRe software, whereas data from LI7200+Gill HS is logged at 20 Hz on LI7550 and fluxes calculated on halfhourly basis using EddyPRO software. " ; dct:identifier "https://data.g-e-m.dk/datasets/10.17897/5J8B-QH75" ; dct:issued "2026-05-20T13:18:20.013630"^^xsd:dateTime, "2026-05-20T16:14:29.916653"^^xsd:dateTime ; dct:modified "2026-05-20T16:14:29.900807"^^xsd:dateTime, "2026-05-20T16:14:29.905764"^^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 ((-20.5557 74.4791, -20.5557 74.4791, -20.5557 74.4791, -20.5557 74.4791))"^^gsp:wktLiteral ] ; dct:temporal [ a dct:PeriodOfTime ; dcat:endDate "2019-10-13"^^xsd:date ; dcat:startDate "2007-01-01"^^xsd:date ], [ a dct:PeriodOfTime ; dcat:endDate "2019-10-13"^^xsd:date ; dcat:startDate "2007-01-01"^^xsd:date ] ; dct:title "MM2" ; schema:about [ a schema:Thing ; schema:name "zackenberg-research-station" ] ; 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/10.17897/5J8B-QH75" ] ; schema:name "University of Copenhagen (UCPH - Partner 3)" ] ; schema:dateModified "2026-05-20T16:14:29.900807" ; schema:datePublished "2020-01-01", "2020-01-01T00:00:00" ; schema:description "Eddy covariance flux measurements has taken place at the site MM2 since 2007. The mast (3 m high) is located on a wet fen area called Rylekæret, about 1.5 km North of the Climate station (operated by ClimateBasis). Between 2007 and 2011 the system consisted of a LI6262 and Gill R2. Since 2012 a LI7200 and Gill HS are used. Data from LI6262+Gill R2 was logged at 20 Hz in Edisol software and fluxes calculated on halfhourly basis using EdiRe software, whereas data from LI7200+Gill HS is logged at 20 Hz on LI7550 and fluxes calculated on halfhourly basis using EddyPRO software. " ; schema:distribution ; schema:identifier "https://data.g-e-m.dk/datasets/10.17897/5J8B-QH75" ; 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 "MM2" ; 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\": [[[-20.555700302124023, 74.4791030883789], [-20.555700302124023, 74.4791030883789], [-20.555700302124023, 74.4791030883789], [-20.555700302124023, 74.4791030883789]]]}" ] ] ; schema:temporalCoverage "2007-01-01/2019-10-13" ; schema:url "https://data.g-e-m.dk/datasets/10.17897/5J8B-QH75" ; schema:variableMeasured [ a schema:PropertyValue ; schema:description "Measurement of wind speed" ; schema:name "wind_speed_ms-1" ; schema:propertyID ; schema:unitText "m s-1" ; schema:url ], [ a schema:PropertyValue ; schema:description "Measurement of wind direction" ; schema:name "Wind_direction_deg" ; schema:propertyID ; schema:unitText "°" ; schema:url ], [ a schema:PropertyValue ; schema:description "Measurement of land-atmosphere exchange of CH4 using gradient method" ; schema:name "CH4_flux_GR_mgm-2h-1" ; schema:propertyID ; schema:unitText "mg m-2 h-1" ; schema:url ], [ a schema:PropertyValue ; schema:name "Time" ; schema:propertyID ; schema:unitText "Time" ; schema:url ], [ a schema:PropertyValue ; schema:description "Eddy covariance measurement of land-atmosphere exchange of latent heat" ; schema:name "Latent_heat_flux_Wm-2" ; schema:propertyID ; schema:unitText "W m-2" ; schema:url ], [ a schema:PropertyValue ; schema:description "Eddy covariance measurement of land-atmosphere exchange of sensible heat" ; schema:name "Sensible_heat_flux_Wm-2" ; schema:propertyID ; schema:unitText "W m-2" ; schema:url ], [ a schema:PropertyValue ; schema:description "Eddy covariance measurement of land-atmosphere exchange of CO2" ; schema:name "CO2_flux_EC_µmolm-2s-1" ; schema:propertyID ; schema:unitText "µmol m-2 s-1" ; schema:url ], [ a schema:PropertyValue ; schema:name "Date" ; schema:propertyID ; schema:unitText "Date" ; 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 TUNDRA", "CARBON FLUX", "CLIMATE INDICATORS", "ECOSYSTEMS", "GEOGRAPHY", "GREENLAND", "PHYSICAL GEOGRAPHY" ; dcat:landingPage ; dcat:theme "zackenberg-research-station" .