@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 "Soil temperature measured at 0.025 m depth using Campbell Scientific 107-L temperature probe. Data comments: 1995-1999: Data from the upper three sensors are very similiar (daily amplitudes of temperatures are almost the same). Could be related to percolating water or because the tube with sensors was not completely covered/below ground. Data is suspect. 1995-2015: Data in this period has earlier been published with a correction according to the autumn zero curtain. Since June 2020 the original non-corrected data from this period is published. 2004-2006: Data deleted or suspect due to high frequency fluctuations (noise) in data related to unstable battery charge or broken sensor. August 2006: all sensors were replaced, new sensors installed in a new hole. 2009-2010: periods of missing data related to unstable battery charge. 2011: Change of measuring method in logger program (from 50 Hz to 250 Hz) in August caused a shift in data. 2013: Change of measuring method in logger program (from 250 Hz to 50 Hz) in August caused a shift in data. 2015-2018: At station visit in 2015 sensors down to 5 cm were dug free. After this the two upper sensors seem to be disturbed or located at new depths. Data is suspect. 2018: Upper two sensors exchanged and placed in new hole. 2019: Sensor has moved upwards due to cryoturbation and depth is approx. 1 cm instead. 2020-2021: Sensor is above surface and is deleted from the data set as it is in fact a near surface air temperature. Contact program manager for more detailed information." ; dct:identifier "https://data.g-e-m.dk/datasets/10.17897/0SF6-7463" ; dct:issued "2026-05-20T13:16:46.418950"^^xsd:dateTime, "2026-05-20T16:13:51.044160"^^xsd:dateTime ; dct:modified "2026-05-20T16:13:50.995181"^^xsd:dateTime, "2026-05-20T16:13:50.998068"^^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 ((-20.5522 74.4719, -20.5522 74.4719, -20.5522 74.4719, -20.5522 74.4719))"^^gsp:wktLiteral ] ; dct:temporal [ a dct:PeriodOfTime ; dcat:endDate "2024-12-31"^^xsd:date ; dcat:startDate "1995-08-17"^^xsd:date ], [ a dct:PeriodOfTime ; dcat:endDate "2024-12-31"^^xsd:date ; dcat:startDate "1995-08-17"^^xsd:date ] ; dct:title "Soil temperature @ 2.5cm - 60min average (°C)" ; 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/10.17897/0SF6-7463" ] ; schema:name "University of Copenhagen (UCPH - Partner 3)" ] ; schema:dateModified "2026-05-20T16:13:50.995181" ; schema:datePublished "2020-01-01", "2020-01-01T00:00:00" ; schema:description "Soil temperature measured at 0.025 m depth using Campbell Scientific 107-L temperature probe. Data comments: 1995-1999: Data from the upper three sensors are very similiar (daily amplitudes of temperatures are almost the same). Could be related to percolating water or because the tube with sensors was not completely covered/below ground. Data is suspect. 1995-2015: Data in this period has earlier been published with a correction according to the autumn zero curtain. Since June 2020 the original non-corrected data from this period is published. 2004-2006: Data deleted or suspect due to high frequency fluctuations (noise) in data related to unstable battery charge or broken sensor. August 2006: all sensors were replaced, new sensors installed in a new hole. 2009-2010: periods of missing data related to unstable battery charge. 2011: Change of measuring method in logger program (from 50 Hz to 250 Hz) in August caused a shift in data. 2013: Change of measuring method in logger program (from 250 Hz to 50 Hz) in August caused a shift in data. 2015-2018: At station visit in 2015 sensors down to 5 cm were dug free. After this the two upper sensors seem to be disturbed or located at new depths. Data is suspect. 2018: Upper two sensors exchanged and placed in new hole. 2019: Sensor has moved upwards due to cryoturbation and depth is approx. 1 cm instead. 2020-2021: Sensor is above surface and is deleted from the data set as it is in fact a near surface air temperature. Contact program manager for more detailed information." ; schema:distribution ; schema:identifier "https://data.g-e-m.dk/datasets/10.17897/0SF6-7463" ; schema:keywords "ARCTIC", "ARCTIC TUNDRA", "ATMOSPHERE", "CLIMATE INDICATORS", "CLIMATOLOGY", "ECOSYSTEMS", "GREENLAND", "METEOROLOGY", "SOIL TEMPERATURE" ; schema:license "https://creativecommons.org/licenses/by-sa/4.0/" ; schema:name "Soil temperature @ 2.5cm - 60min average (°C)" ; 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\": [[[-20.552244186401367, 74.47188568115234], [-20.552244186401367, 74.47188568115234], [-20.552244186401367, 74.47188568115234], [-20.552244186401367, 74.47188568115234]]]}" ] ] ; schema:temporalCoverage "1995-08-17/2024-12-31" ; schema:url "https://data.g-e-m.dk/datasets/10.17897/0SF6-7463" ; schema:variableMeasured [ a schema:PropertyValue ; schema:description "Data comments: 1995-1999: Data from the upper three sensors are very similiar (daily amplitudes of temperatures are almost the same). Could be related to percolating water or because the tube with sensors was not completely covered/below ground. Data is suspect. 1995-2015: Data in this period has earlier been published with a correction according to the autumn zero curtain. Since June 2020 the original non-corrected data from this period is published. 2004-2006: Data deleted or suspect due to high frequency fluctuations (noise) in data related to unstable battery charge or broken sensor. August 2006: all sensors were replaced, new sensors installed in a new hole. 2009-2010: periods of missing data related to unstable battery charge. 2011: Change of measuring method in logger program (from 50 Hz to 250 Hz) in August caused a shift in data. 2013: Change of measuring method in logger progra" ; schema:name "Soil T (°C)" ; schema:propertyID ; schema:unitText "°C" ; schema:url ], [ a schema:PropertyValue ; schema:description "Date of observation" ; schema:name "Date" ; schema:propertyID ; schema:unitText "YYYY-MM-DD" ; schema:url ], [ a schema:PropertyValue ; schema:description "Flag assigned during quality control. Flag = \"fair\" is assigned instead of good to indicate where a value is interpolated, or, where only 1 timeseries has been used where it is normal to take the average of 2 timeseries. Flag = unknown is equivalent to the flag \"good\" or \"fair\" and is due a change in proceedures. Work is underway to update these flags." ; schema:name "Quality Flag" ; schema:propertyID ; schema:unitText "°C" ; schema:url ], [ a schema:PropertyValue ; schema:description "Time of observation (UTC)" ; schema:name "Time" ; schema:propertyID ; schema:unitText "HH:MM" ; 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", "ATMOSPHERE", "CLIMATE INDICATORS", "CLIMATOLOGY", "ECOSYSTEMS", "GREENLAND", "METEOROLOGY", "SOIL TEMPERATURE" ; dcat:landingPage ; dcat:theme "zackenberg-research-station" .