{
  "accessUrl": "https://data.icos-cp.eu/objects/6eItGfD1g8lUnrQvoXxL9yw1",
  "coverageGeo": {
    "geometry": {
      "coordinates": [141.38533, 42.986843, 173.0],
      "type": "Point"
    },
    "properties": {
      "label": "JP-Spp"
    },
    "type": "Feature"
  },
  "fileName": "JPF_JP-Spp_FLUXNET_FLUXMET_HH_2000-2018_v1.3_r1.zip",
  "hash": "6eItGfD1g8lUnrQvoXxL9yw1feiDrBx2rWC2MG5mPPU",
  "latestVersion": "https://meta.icos-cp.eu/objects/6eItGfD1g8lUnrQvoXxL9yw1",
  "parentCollections": [],
  "pid": "11676/6eItGfD1g8lUnrQvoXxL9yw1",
  "references": {
    "authors": [{
      "email": "kitamu93@ffpri.affrc.go.jp",
      "firstName": "Kenzo",
      "lastName": "Kitamura",
      "self": {
        "comments": [],
        "uri": "http://meta.icos-cp.eu/resources/people/Kenzo_Kitamura"
      }
    }, {
      "email": "pop128@ffpri.affrc.go.jp",
      "firstName": "Yasuko",
      "lastName": "Mizoguchi",
      "orcid": "0000-0002-9346-7835",
      "self": {
        "comments": [],
        "uri": "http://meta.icos-cp.eu/resources/people/Yasuko_Mizoguchi"
      }
    }],
    "citationBibTex": "@misc{https://hdl.handle.net/11676/6eItGfD1g8lUnrQvoXxL9yw1,\r\n  author={Kitamura, Kenzo and Mizoguchi, Yasuko},\r\n  title={Fluxnet Product from Sapporo forest meteorology research site, 1999-12-31–2018-12-31},\r\n  year={2026},\r\n  url={https://hdl.handle.net/11676/6eItGfD1g8lUnrQvoXxL9yw1},\r\n  publisher={Ecosystem Thematic Centre},\r\n  copyright={http://meta.icos-cp.eu/ontologies/cpmeta/icosLicence},\r\n  pid={11676/6eItGfD1g8lUnrQvoXxL9yw1}\r\n}",
    "citationRis": "TY - DATA\r\nT1 - Fluxnet Product from Sapporo forest meteorology research site, 1999-12-31–2018-12-31\r\nID - 11676/6eItGfD1g8lUnrQvoXxL9yw1\r\nPY - 2026\r\nUR - https://hdl.handle.net/11676/6eItGfD1g8lUnrQvoXxL9yw1\r\nPB - Ecosystem Thematic Centre\r\nAU - Kitamura, Kenzo\r\nAU - Mizoguchi, Yasuko\r\nER - ",
    "citationString": "Kitamura, K., Mizoguchi, Y. (2026). Fluxnet Product from Sapporo forest meteorology research site, 1999-12-31–2018-12-31, FLUXNET, https://hdl.handle.net/11676/6eItGfD1g8lUnrQvoXxL9yw1",
    "licence": {
      "baseLicence": "https://creativecommons.org/licenses/by/4.0",
      "name": "ICOS CCBY4 Data Licence",
      "url": "http://meta.icos-cp.eu/ontologies/cpmeta/icosLicence",
      "webpage": "https://data.icos-cp.eu/licence"
    },
    "temporalCoverageDisplay": "1999-12-31–2018-12-31",
    "title": "Fluxnet Product from Sapporo forest meteorology research site"
  },
  "size": 167570571,
  "specificInfo": {
    "acquisition": {
      "interval": {
        "start": "1999-12-31T15:00:00Z",
        "stop": "2018-12-31T15:00:00Z"
      },
      "station": {
        "countryCode": "JP",
        "id": "JP-Spp",
        "location": {
          "alt": 173.0,
          "label": "JP-Spp",
          "lat": 42.986843,
          "lon": 141.38533
        },
        "networks": [{
          "self": {
            "comments": ["Japanese Network of sites."],
            "label": "JapanFlux",
            "uri": "http://meta.icos-cp.eu/resources/networks/ETC/JPF"
          },
          "website": "https://japanflux.org/?lang=english"
        }, {
          "self": {
            "comments": ["Asian Regional Research Network."],
            "label": "AsiaFlux",
            "uri": "http://meta.icos-cp.eu/resources/networks/ETC/ASF"
          },
          "website": "http://www.asiaflux.net/"
        }],
        "org": {
          "name": "Sapporo forest meteorology research site",
          "self": {
            "comments": ["Sapporo forest meteorology research site is located in a hilly area neighboring urban district of Sapporo city. It is a secondary boreal deciduous broadleaf forest which had grown after wildfire. Century-old japanese white birch is its dominant species but it is on the wane and oak trees are gradually taking over the forest. The climate of this area is classified in cool-temperate, with relatively hot and dry summer and heavily snowing winter. We are observing the CO2 and energy budget in a typical secondary forest of northern Japan under various climatic conditions.,The forest around the observation tower was badly damaged by typhoon in September 2004. Most of the fallen trees are untouched to study the natural transition of ecosystem. The observation tower had restarted its operation in June 2005, after the recovery from damage.,The site is supporting the continuous research activities on ecology, physiology, pedology and hydrology and accumulating the results for the future studies which especially focus on transition of forest ecosystem.The turbulent fluxes of sensible heat, latent heat, CO2 were measured using the eddy covariance system."],
            "label": "JP-Spp",
            "uri": "http://meta.icos-cp.eu/resources/stations/ES_JP-Spp"
          }
        },
        "pictures": [],
        "specificInfo": {
          "_type": "etc",
          "climateZone": {
            "comments": ["A climate where there is at least one month colder than -3°C and precipitation is generally the same throughout the year. This climate is usually found between 45° and 55° latitude, but may extend up to 60° latitude."],
            "label": "Cold; warm summer, without dry season (Dfb)",
            "uri": "http://meta.icos-cp.eu/ontologies/cpmeta/koppen_Dfb"
          },
          "discontinued": false,
          "documentation": [],
          "ecosystemType": {
            "comments": ["Lands dominated by woody vegetation with a percent cover >60% and height exceeding 2 meters. Consists of broadleaf tree communities with an annual cycle of leaf-on and leaf-off periods."],
            "label": "Deciduous Broadleaf Forests",
            "uri": "http://meta.icos-cp.eu/ontologies/cpmeta/igbp_DBF"
          },
          "meanAnnualPrecip": 1150.0,
          "meanAnnualTemp": 7.4,
          "stationDocs": [],
          "stationPubs": [],
          "theme": {
            "icon": "https://static.icos-cp.eu/images/themes/eco.svg",
            "markerIcon": "https://static.icos-cp.eu/share/stations/icons/es.png",
            "self": {
              "comments": [],
              "label": "Ecosystem data",
              "uri": "http://meta.icos-cp.eu/resources/themes/ecosystem"
            }
          },
          "timeZoneOffset": 9
        }
      }
    },
    "columns": [{
      "label": "TIMESTAMP",
      "model": {
        "comments": [],
        "label": "TIMESTAMP (ISO)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/timeStampColumn"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/iso8601dateTime",
      "valueType": {
        "self": {
          "comments": [],
          "label": "time instant, UTC",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/timeStamp"
        }
      }
    }, {
      "label": "TIMESTAMP_END",
      "model": {
        "comments": ["end of measurement time window"],
        "label": "TIMESTAMP_END",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcTimestampEndCol"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/etcLocalDateTime",
      "valueType": {
        "self": {
          "comments": [],
          "label": "time instant, local non-DST time",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/timeStampLocalNoDst"
        }
      }
    }, {
      "label": "TA_F",
      "model": {
        "comments": ["gapfilled"],
        "label": "TA_F",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetTA_F"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["physical temperature"],
          "label": "temperature",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/temperature"
        },
        "self": {
          "comments": [],
          "label": "air temperature",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/airTempCelsius"
        },
        "unit": "°C"
      }
    }, {
      "isFlagFor": ["http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetTA_F"],
      "label": "TA_F_QC",
      "model": {
        "comments": [],
        "label": "TA_F_QC",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetTA_F_QC"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/bmpChar",
      "valueType": {
        "self": {
          "comments": ["small positive integer number"],
          "label": "quality flag (int)",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/integerQualityFlag"
        }
      }
    }, {
      "label": "SW_IN_F",
      "model": {
        "comments": [],
        "label": "SW_IN_F",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetSW_IN_F"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of energy passing through unit area during unit of time"],
          "label": "energy flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/energyFlux"
        },
        "self": {
          "comments": [],
          "label": "incoming shortwave radiation",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/incomingSwRadiation"
        },
        "unit": "W m-2"
      }
    }, {
      "isFlagFor": ["http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetSW_IN_F"],
      "label": "SW_IN_F_QC",
      "model": {
        "comments": [],
        "label": "SW_IN_F_QC",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetSW_IN_F_QC"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/bmpChar",
      "valueType": {
        "self": {
          "comments": ["small positive integer number"],
          "label": "quality flag (int)",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/integerQualityFlag"
        }
      }
    }, {
      "label": "LW_IN_F",
      "model": {
        "comments": [],
        "label": "LW_IN_F",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/LW_IN_F"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of energy passing through unit area during unit of time"],
          "label": "energy flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/energyFlux"
        },
        "self": {
          "comments": [],
          "label": "incoming long-wave radiation, net radiometer",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/incomingLwRadiationRadiometer"
        },
        "unit": "W m-2"
      }
    }, {
      "isFlagFor": ["http://meta.icos-cp.eu/resources/cpmeta/LW_IN_F"],
      "label": "LW_IN_F_QC",
      "model": {
        "comments": [],
        "label": "LW_IN_F_QC",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/LW_IN_F_QC"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/bmpChar",
      "valueType": {
        "self": {
          "comments": ["single-letter quality flag"],
          "label": "quality flag",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/oneLetterFlag"
        }
      }
    }, {
      "label": "VPD_F",
      "model": {
        "comments": [],
        "label": "VPD_F",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetVPD_F"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["mechanical pressure, e.g. atmospheric or gas pressure"],
          "label": "pressure",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/pressure"
        },
        "self": {
          "comments": [],
          "label": "vapour pressure deficit",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/vapourPressureDeficit"
        },
        "unit": "hPa"
      }
    }, {
      "isFlagFor": ["http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetVPD_F"],
      "label": "VPD_F_QC",
      "model": {
        "comments": [],
        "label": "VPD_F_QC",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetVPD_F_QC"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/bmpChar",
      "valueType": {
        "self": {
          "comments": ["small positive integer number"],
          "label": "quality flag (int)",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/integerQualityFlag"
        }
      }
    }, {
      "label": "PA_F",
      "model": {
        "comments": [],
        "label": "PA_F",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/PA_F"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["mechanical pressure, e.g. atmospheric or gas pressure"],
          "label": "pressure",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/pressure"
        },
        "self": {
          "comments": [],
          "label": "atmospheric pressure",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/atmosphericPressure"
        },
        "unit": "kPa"
      }
    }, {
      "isFlagFor": ["http://meta.icos-cp.eu/resources/cpmeta/PA_F"],
      "label": "PA_F_QC",
      "model": {
        "comments": [],
        "label": "PA_F_QC",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/PA_F_QC"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/bmpChar",
      "valueType": {
        "self": {
          "comments": ["single-letter quality flag"],
          "label": "quality flag",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/oneLetterFlag"
        }
      }
    }, {
      "label": "P_F",
      "model": {
        "comments": [],
        "label": "P_F",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/P_F"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["spatial length"],
          "label": "length",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/length"
        },
        "self": {
          "comments": [],
          "label": "precipitation (total)",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/precipitation"
        },
        "unit": "mm"
      }
    }, {
      "isFlagFor": ["http://meta.icos-cp.eu/resources/cpmeta/P_F"],
      "label": "P_F_QC",
      "model": {
        "comments": [],
        "label": "P_F_QC",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/P_F_QC"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/bmpChar",
      "valueType": {
        "self": {
          "comments": ["small positive integer number"],
          "label": "quality flag (int)",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/integerQualityFlag"
        }
      }
    }, {
      "label": "WS_F",
      "model": {
        "comments": [],
        "label": "WS_F",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/WS_F"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["distance per unit time"],
          "label": "velocity",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/velocity"
        },
        "self": {
          "comments": [],
          "label": "wind speed",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/windSpeed"
        },
        "unit": "m s-1"
      }
    }, {
      "isFlagFor": ["http://meta.icos-cp.eu/resources/cpmeta/WS_F"],
      "label": "WS_F_QC",
      "model": {
        "comments": [],
        "label": "WS_F_QC",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/WS_F_QC"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/bmpChar",
      "valueType": {
        "self": {
          "comments": ["single-letter quality flag"],
          "label": "quality flag",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/oneLetterFlag"
        }
      }
    }, {
      "label": "LE_F_MDS",
      "model": {
        "comments": [],
        "label": "LE_F_MDS",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetLE_F_MDS"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of energy passing through unit area during unit of time"],
          "label": "energy flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/energyFlux"
        },
        "self": {
          "comments": [],
          "label": "latent heat flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/latentHeatFlux"
        },
        "unit": "W m-2"
      }
    }, {
      "isFlagFor": ["http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetLE_F_MDS"],
      "label": "LE_F_MDS_QC",
      "model": {
        "comments": [],
        "label": "LE_F_MDS_QC",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetLE_F_MDS_QC"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/bmpChar",
      "valueType": {
        "self": {
          "comments": ["small positive integer number"],
          "label": "quality flag (int)",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/integerQualityFlag"
        }
      }
    }, {
      "label": "H_F_MDS",
      "model": {
        "comments": [],
        "label": "H_F_MDS",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetH_F_MDS"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of energy passing through unit area during unit of time"],
          "label": "energy flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/energyFlux"
        },
        "self": {
          "comments": [],
          "label": "sensible heat flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/sensibleHeatFlux"
        },
        "unit": "W m-2"
      }
    }, {
      "isFlagFor": ["http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetH_F_MDS"],
      "label": "H_F_MDS_QC",
      "model": {
        "comments": [],
        "label": "H_F_MDS_QC",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetH_F_MDS_QC"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/bmpChar",
      "valueType": {
        "self": {
          "comments": ["small positive integer number"],
          "label": "quality flag (int)",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/integerQualityFlag"
        }
      }
    }, {
      "label": "NEE_CUT_REF",
      "model": {
        "comments": [],
        "label": "NEE_REF",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetNEE_REF"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of particles passing through unit area during unit of time"],
          "label": "particle flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/particleFlux"
        },
        "self": {
          "comments": [],
          "label": "net ecosystem exchange",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/netEcosystemExchange"
        },
        "unit": "µmol m-2 s-1"
      }
    }, {
      "label": "NEE_VUT_REF",
      "model": {
        "comments": [],
        "label": "NEE_REF",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetNEE_REF"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of particles passing through unit area during unit of time"],
          "label": "particle flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/particleFlux"
        },
        "self": {
          "comments": [],
          "label": "net ecosystem exchange",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/netEcosystemExchange"
        },
        "unit": "µmol m-2 s-1"
      }
    }, {
      "isFlagFor": ["http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetNEE_REF", "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetRECO_REF", "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetGPP_REF"],
      "label": "NEE_CUT_REF_QC",
      "model": {
        "comments": [],
        "label": "NEE_REF_QC",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetNEE_REF_QC"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/bmpChar",
      "valueType": {
        "self": {
          "comments": ["small positive integer number"],
          "label": "quality flag (int)",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/integerQualityFlag"
        }
      }
    }, {
      "isFlagFor": ["http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetNEE_REF", "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetRECO_REF", "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetGPP_REF"],
      "label": "NEE_VUT_REF_QC",
      "model": {
        "comments": [],
        "label": "NEE_REF_QC",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetNEE_REF_QC"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/bmpChar",
      "valueType": {
        "self": {
          "comments": ["small positive integer number"],
          "label": "quality flag (int)",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/integerQualityFlag"
        }
      }
    }, {
      "label": "RECO_NT_VUT_REF",
      "model": {
        "comments": ["Ecosystem respiration, determined by method by Lasslop et al. (2010)"],
        "label": "RECO_REF (opt)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetRECO_REFopt"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of particles passing through unit area during unit of time"],
          "label": "particle flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/particleFlux"
        },
        "self": {
          "comments": ["CO2 molecule flux"],
          "label": "ecosystem respiration",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/ecosystemRespiration"
        },
        "unit": "µmol m-2 s-1"
      }
    }, {
      "label": "RECO_NT_CUT_REF",
      "model": {
        "comments": ["Ecosystem respiration, determined by method by Lasslop et al. (2010)"],
        "label": "RECO_REF (opt)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetRECO_REFopt"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of particles passing through unit area during unit of time"],
          "label": "particle flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/particleFlux"
        },
        "self": {
          "comments": ["CO2 molecule flux"],
          "label": "ecosystem respiration",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/ecosystemRespiration"
        },
        "unit": "µmol m-2 s-1"
      }
    }, {
      "label": "GPP_NT_VUT_REF",
      "model": {
        "comments": ["Gross primary CO2 production, determined by method by Lasslop et al. (2010)"],
        "label": "GPP_REF (opt)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetGPP_REFopt"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of particles passing through unit area during unit of time"],
          "label": "particle flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/particleFlux"
        },
        "self": {
          "comments": [],
          "label": "gross primary CO2 production",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/grossPrimaryProduction"
        },
        "unit": "µmol m-2 s-1"
      }
    }, {
      "label": "GPP_NT_CUT_REF",
      "model": {
        "comments": ["Gross primary CO2 production, determined by method by Lasslop et al. (2010)"],
        "label": "GPP_REF (opt)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetGPP_REFopt"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of particles passing through unit area during unit of time"],
          "label": "particle flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/particleFlux"
        },
        "self": {
          "comments": [],
          "label": "gross primary CO2 production",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/grossPrimaryProduction"
        },
        "unit": "µmol m-2 s-1"
      }
    }, {
      "label": "RECO_DT_VUT_REF",
      "model": {
        "comments": ["Ecosystem respiration, determined by method by Lasslop et al. (2010)"],
        "label": "RECO_REF (opt)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetRECO_REFopt"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of particles passing through unit area during unit of time"],
          "label": "particle flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/particleFlux"
        },
        "self": {
          "comments": ["CO2 molecule flux"],
          "label": "ecosystem respiration",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/ecosystemRespiration"
        },
        "unit": "µmol m-2 s-1"
      }
    }, {
      "label": "RECO_DT_CUT_REF",
      "model": {
        "comments": ["Ecosystem respiration, determined by method by Lasslop et al. (2010)"],
        "label": "RECO_REF (opt)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetRECO_REFopt"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of particles passing through unit area during unit of time"],
          "label": "particle flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/particleFlux"
        },
        "self": {
          "comments": ["CO2 molecule flux"],
          "label": "ecosystem respiration",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/ecosystemRespiration"
        },
        "unit": "µmol m-2 s-1"
      }
    }, {
      "label": "GPP_DT_VUT_REF",
      "model": {
        "comments": ["Gross primary CO2 production, determined by method by Lasslop et al. (2010)"],
        "label": "GPP_REF (opt)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetGPP_REFopt"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of particles passing through unit area during unit of time"],
          "label": "particle flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/particleFlux"
        },
        "self": {
          "comments": [],
          "label": "gross primary CO2 production",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/grossPrimaryProduction"
        },
        "unit": "µmol m-2 s-1"
      }
    }, {
      "label": "GPP_DT_CUT_REF",
      "model": {
        "comments": ["Gross primary CO2 production, determined by method by Lasslop et al. (2010)"],
        "label": "GPP_REF (opt)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetGPP_REFopt"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["amount of particles passing through unit area during unit of time"],
          "label": "particle flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/particleFlux"
        },
        "self": {
          "comments": [],
          "label": "gross primary CO2 production",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/grossPrimaryProduction"
        },
        "unit": "µmol m-2 s-1"
      }
    }],
    "nRows": 333120,
    "productionInfo": {
      "contributors": [],
      "creator": {
        "name": "Ecosystem Thematic Centre",
        "self": {
          "comments": [],
          "label": "ICOS ETC",
          "uri": "http://meta.icos-cp.eu/resources/organizations/ETC"
        }
      },
      "dateTime": "2026-02-22T14:00:00Z",
      "sources": []
    }
  },
  "specification": {
    "dataLevel": 2,
    "datasetSpec": {
      "self": {
        "comments": ["Updated 2026-04-15 to support GPP_REF and RECO_REF as optional variables"],
        "label": "ETC Fluxnet (NRT, L2)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxnetL2AndNrtDataset"
      }
    },
    "documentation": [],
    "encoding": {
      "comments": [],
      "label": "zip",
      "uri": "http://meta.icos-cp.eu/ontologies/cpmeta/zipEncoding"
    },
    "format": {
      "goodFlagValues": ["1", "0"],
      "self": {
        "comments": ["The first two columns are expected to be the beginning and the end of the averaging period in yyyyMMddHHmm format (no DST)"],
        "label": "ICOS ETC half-hourly product CSV",
        "uri": "http://meta.icos-cp.eu/ontologies/cpmeta/asciiEtcHalfHourlyProductTimeSer"
      },
      "uri": "http://meta.icos-cp.eu/ontologies/cpmeta/asciiEtcHalfHourlyProductTimeSer"
    },
    "keywords": ["carbon flux", "pre-ICOS"],
    "project": {
      "self": {
        "comments": ["The FLUXNET project in the European Processing Hub contribution to the global FLUXNET initiative. It contains internationally standardized products from ICOS stations and non-ICOS stations, covering also sites in other continents. For the ICOS stations more detailed and complete data can be found in the ICOS Level2 products."],
        "label": "FLUXNET",
        "uri": "http://meta.icos-cp.eu/resources/projects/FLUXNET"
      }
    },
    "self": {
      "comments": ["Subset of half-hourly Fluxes and Meteo measurements processed with the international standard FLUXNET procedure (ONEFlux suite) for fast plotting purposes. Full data available in the Archive product."],
      "label": "Fluxnet Product",
      "uri": "http://meta.icos-cp.eu/resources/cpmeta/miscFluxnetProduct"
    },
    "specificDatasetType": "StationTimeSeries",
    "theme": {
      "icon": "https://static.icos-cp.eu/images/themes/eco.svg",
      "markerIcon": "https://static.icos-cp.eu/share/stations/icons/es.png",
      "self": {
        "comments": [],
        "label": "Ecosystem data",
        "uri": "http://meta.icos-cp.eu/resources/themes/ecosystem"
      }
    }
  },
  "submission": {
    "start": "2026-02-24T15:25:26.495568456Z",
    "stop": "2026-02-24T15:28:11.030426691Z",
    "submitter": {
      "name": "Ecosystem Thematic Centre",
      "self": {
        "comments": [],
        "label": "ICOS ETC",
        "uri": "http://meta.icos-cp.eu/resources/organizations/ETC"
      }
    }
  }
}