{
  "accessUrl": "https://data.icos-cp.eu/objects/s3jqWPCMgnyxOmUZf2Rpjf8J",
  "coverageGeo": {
    "geometry": {
      "coordinates": [23.2503, 59.8418, 1.0],
      "type": "Point"
    },
    "properties": {
      "label": "FI-Tvm"
    },
    "type": "Feature"
  },
  "fileName": "ICOSETC_FI-Tvm_FLUXES_L2.zip",
  "hash": "s3jqWPCMgnyxOmUZf2Rpjf8JMkWiQtr7v5lI8ZS_2Pw",
  "latestVersion": "https://meta.icos-cp.eu/objects/s3jqWPCMgnyxOmUZf2Rpjf8J",
  "parentCollections": [],
  "pid": "11676/s3jqWPCMgnyxOmUZf2Rpjf8J",
  "previousVersion": "https://meta.icos-cp.eu/objects/XXjEUuWrd3NBBIwalflBzBfJ",
  "references": {
    "authors": [{
      "email": "ivan.mammarella@helsinki.fi",
      "firstName": "Ivan",
      "lastName": "Mammarella",
      "orcid": "0000-0002-8516-3356",
      "self": {
        "comments": [],
        "uri": "http://meta.icos-cp.eu/resources/people/Ivan_Mammarella"
      }
    }, {
      "email": "aki.vaha@helsinki.fi",
      "firstName": "Aki",
      "lastName": "Vähä",
      "self": {
        "comments": [],
        "uri": "http://meta.icos-cp.eu/resources/people/Aki_V%C3%A4h%C3%A4"
      }
    }, {
      "email": "pasi.kolari@helsinki.fi",
      "firstName": "Pasi",
      "lastName": "Kolari",
      "self": {
        "comments": [],
        "uri": "http://meta.icos-cp.eu/resources/people/Pasi_Kolari"
      }
    }, {
      "email": "kurt.spence@helsinki.fi",
      "firstName": "Kurt",
      "lastName": "Spence",
      "orcid": "0000-0003-0837-3234",
      "self": {
        "comments": [],
        "uri": "http://meta.icos-cp.eu/resources/people/Kurt_Spence"
      }
    }, {
      "email": "nicolas-xavier.geilfus@helsinki.fi",
      "firstName": "Nicolas-Xavier",
      "lastName": "Geilfus",
      "orcid": "0000-0002-0419-8283",
      "self": {
        "comments": [],
        "uri": "http://meta.icos-cp.eu/resources/people/Nicolas-Xavier_Geilfus"
      }
    }, {
      "email": "joanna.norkko@helsinki.fi",
      "firstName": "Joanna",
      "lastName": "Norkko",
      "orcid": "0000-0001-9885-8408",
      "self": {
        "comments": [],
        "uri": "http://meta.icos-cp.eu/resources/people/Joanna_Norkko"
      }
    }],
    "citationBibTex": "@misc{https://hdl.handle.net/11676/s3jqWPCMgnyxOmUZf2Rpjf8J,\r\n  author={Mammarella, Ivan and Vähä, Aki and Kolari, Pasi and Spence, Kurt and Geilfus, Nicolas-Xavier and Norkko, Joanna},\r\n  title={ETC L2 Fluxes from Tvarminne, 2021-12-31–2025-12-31},\r\n  year={2026},\r\n  url={https://hdl.handle.net/11676/s3jqWPCMgnyxOmUZf2Rpjf8J},\r\n  publisher={Ecosystem Thematic Centre},\r\n  copyright={http://meta.icos-cp.eu/ontologies/cpmeta/icosLicence},\r\n  pid={11676/s3jqWPCMgnyxOmUZf2Rpjf8J}\r\n}",
    "citationRis": "TY - DATA\r\nT1 - ETC L2 Fluxes from Tvarminne, 2021-12-31–2025-12-31\r\nID - 11676/s3jqWPCMgnyxOmUZf2Rpjf8J\r\nPY - 2026\r\nUR - https://hdl.handle.net/11676/s3jqWPCMgnyxOmUZf2Rpjf8J\r\nPB - Ecosystem Thematic Centre\r\nAU - Mammarella, Ivan\r\nAU - Vähä, Aki\r\nAU - Kolari, Pasi\r\nAU - Spence, Kurt\r\nAU - Geilfus, Nicolas-Xavier\r\nAU - Norkko, Joanna\r\nER - ",
    "citationString": "Mammarella, I., Vähä, A., Kolari, P., Spence, K., Geilfus, N., Norkko, J. (2026). ETC L2 Fluxes from Tvarminne, 2021-12-31–2025-12-31, ICOS RI, https://hdl.handle.net/11676/s3jqWPCMgnyxOmUZf2Rpjf8J",
    "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": "2021-12-31–2025-12-31",
    "title": "ETC L2 Fluxes from Tvarminne"
  },
  "size": 2157176,
  "specificInfo": {
    "acquisition": {
      "interval": {
        "start": "2021-12-31T22:00:00Z",
        "stop": "2025-12-31T22:00:00Z"
      },
      "station": {
        "countryCode": "FI",
        "id": "FI-Tvm",
        "location": {
          "alt": 1.0,
          "label": "FI-Tvm",
          "lat": 59.8418,
          "lon": 23.2503
        },
        "networks": [{
          "self": {
            "comments": ["European and Unaffiliated sites reference network."],
            "label": "European Fluxes Database",
            "uri": "http://meta.icos-cp.eu/resources/networks/ETC/EUDB"
          },
          "website": "https://www.europe-fluxdata.eu"
        }, {
          "self": {
            "comments": ["Integrated Carbon Observation System European Research Infrastructure."],
            "label": "ICOS",
            "uri": "http://meta.icos-cp.eu/resources/networks/ETC/ICOS"
          },
          "website": "https://www.icos-ri.eu/"
        }],
        "org": {
          "name": "Tvarminne",
          "self": {
            "comments": ["The coastal site Tvorminne is located in southern Finland on the Baltic Sea coast in the vicinity of the Tvorminne Zoological Station. The site is on an island approximately 25 m in east-west and 15 m in north-south direction. The island is 2 m at its tallest and comprises of bedrock with no vegetation. The island is in a semi-enclosed bay surrounded by the mainland in the west and north and islands in other directions. Distances over water between the islands are mostly 100-400 m and up to 2000 m in some areas."],
            "label": "FI-Tvm",
            "uri": "http://meta.icos-cp.eu/resources/stations/ES_FI-Tvm"
          }
        },
        "pictures": ["https://fileshare.icos-cp.eu/s/gEfm7AkdrEQrGwM/preview"],
        "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": [],
            "label": "Water Bodies",
            "uri": "http://meta.icos-cp.eu/ontologies/cpmeta/igbp_WAT"
          },
          "labelingDate": "2023-11-15",
          "meanAnnualPrecip": 634.0,
          "meanAnnualTemp": 6.5,
          "stationClass": "Associated",
          "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": 2
        }
      }
    },
    "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": "FC",
      "model": {
        "comments": ["Carbon Dioxide (CO2) turbulent flux (no storage correction)"],
        "label": "FC (CO2 turbulent flux)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/FC"
      },
      "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": "carbon dioxide (CO2) flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/co2Flux"
        },
        "unit": "µmol m-2 s-1"
      }
    }, {
      "label": "H",
      "model": {
        "comments": ["Sensible heat turbulent flux (no storage correction, cleaned)"],
        "label": "H",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/H"
      },
      "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"
      }
    }, {
      "label": "H2O",
      "model": {
        "comments": ["Water (H2O) vapor in mole fraction of wet air"],
        "label": "H2O",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/H2O"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["Magnitude of a part of a whole. Can be measured in percent, or be a number between 0 and maximum (inclusive)."],
          "label": "portion",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/portion"
        },
        "self": {
          "comments": ["ratio of the amount of water molecules to the total amount of the molecules of the wet air"],
          "label": "H2O mole fraction",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/h2oMolarFraction"
        },
        "unit": "mmol mol-1"
      }
    }, {
      "label": "LE",
      "model": {
        "comments": ["Latent heat turbulent flux (no storage correction, cleaned)"],
        "label": "LE (latent heat flux)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/LE"
      },
      "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"
      }
    }, {
      "label": "SC",
      "model": {
        "comments": ["Carbon Dioxide (CO2) storage flux"],
        "label": "SC (CO2 storage flux)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/SC"
      },
      "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": "carbon dioxide (CO2) flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/co2Flux"
        },
        "unit": "µmol m-2 s-1"
      }
    }, {
      "label": "TAU",
      "model": {
        "comments": [],
        "label": "TAU",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/TAU"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["the rate of transfer of momentum across a unit area"],
          "label": "momentum flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/momentumFlux"
        },
        "self": {
          "comments": [],
          "label": "eddy covariance momentum flux",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/ecMomentumFlux"
        },
        "unit": "kg m-1 s-2"
      }
    }, {
      "label": "USTAR",
      "model": {
        "comments": [],
        "label": "USTAR",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/USTAR"
      },
      "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": "friction velocity",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/frictionVelocity"
        },
        "unit": "m s-1"
      }
    }, {
      "label": "W_SIGMA",
      "model": {
        "comments": ["Standard deviation of vertical velocity fluctuations"],
        "label": "W_SIGMA",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/W_SIGMA"
      },
      "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": ["Standard deviation of fluctuations"],
          "label": "standard deviation of fluctuations",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/fluctuationSd"
        },
        "unit": "m s-1"
      }
    }, {
      "label": "ZL",
      "model": {
        "comments": ["Monin-Obukhov stability parameter"],
        "label": "ZL",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/ZL"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["unitless numeric quantity"],
          "label": "arbitrary number",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/number"
        },
        "self": {
          "comments": [],
          "label": "Monin-Obukhov stability parameter",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/moninObukhovStability"
        }
      }
    }, {
      "label": "NEE",
      "model": {
        "comments": ["Net Ecosystem Exchange CO2 (cleaned)"],
        "label": "NEE",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/ETC_NEE"
      },
      "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": "CO2",
      "model": {
        "comments": ["Carbon Dioxide (CO2) in mole fraction of wet air (from the EC gas analyser)"],
        "label": "CO2 (wet air mole fraction)",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/CO2"
      },
      "valueFormat": "http://meta.icos-cp.eu/ontologies/cpmeta/float32",
      "valueType": {
        "quantityKind": {
          "comments": ["Magnitude of a part of a whole. Can be measured in percent, or be a number between 0 and maximum (inclusive)."],
          "label": "portion",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/portion"
        },
        "self": {
          "comments": ["Carbon Dioxide (CO2) in mole fraction of wet air (from the EC gas analyser)"],
          "label": "CO2 (wet air mole fraction)",
          "uri": "http://meta.icos-cp.eu/resources/cpmeta/co2MixingRatioWet"
        },
        "unit": "µmol mol-1"
      }
    }, {
      "label": "NEE_UNCLEANED",
      "model": {
        "comments": ["Net Ecosystem Exchange CO2 (NOT cleaned)"],
        "label": "NEE_UNCLEANED",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/ETC_NEE_uncleaned"
      },
      "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": "LE_UNCLEANED",
      "model": {
        "comments": ["Latent heat turbulent flux (no storage correction, NOT cleaned)"],
        "label": "LE_UNCLEANED",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/LE_uncleaned"
      },
      "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"
      }
    }, {
      "label": "H_UNCLEANED",
      "model": {
        "comments": ["Sensible heat turbulent flux (no storage correction, NOT cleaned)"],
        "label": "H_UNCLEANED",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/H_uncleaned"
      },
      "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"
      }
    }],
    "nRows": 70128,
    "productionInfo": {
      "contributors": [],
      "creator": {
        "name": "Ecosystem Thematic Centre",
        "self": {
          "comments": [],
          "label": "ICOS ETC",
          "uri": "http://meta.icos-cp.eu/resources/organizations/ETC"
        }
      },
      "dateTime": "2026-03-31T19:50:22Z",
      "sources": []
    }
  },
  "specification": {
    "dataLevel": 2,
    "datasetSpec": {
      "self": {
        "comments": [],
        "label": "ETC fluxes",
        "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcFluxesDataset"
      }
    },
    "documentation": [{
      "hash": "_Vb_c34v0nfTA_fG0kiIAmXMR4EBj5bGtvKEwE3o7zM",
      "name": "ICOSETC_Fluxes_product_description.pdf",
      "res": "https://meta.icos-cp.eu/objects/_Vb_c34v0nfTA_fG0kiIAmXM"
    }, {
      "hash": "tive6J2GP6n0kQcokzYXTr7WVGlkqWmBZgoBBHj-Vh4",
      "name": "Fluxes_Variables.csv",
      "res": "https://meta.icos-cp.eu/objects/tive6J2GP6n0kQcokzYXTr7W"
    }],
    "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"],
    "project": {
      "keywords": ["ICOS"],
      "self": {
        "comments": ["Official ICOS data"],
        "label": "ICOS",
        "uri": "http://meta.icos-cp.eu/resources/projects/icos"
      }
    },
    "self": {
      "comments": ["Half-hourly eddy covariance fluxes, all the quality tests results, storage fluxes and footprint information calculated by the ICOS ETC starting from the raw data"],
      "label": "ETC L2 Fluxes",
      "uri": "http://meta.icos-cp.eu/resources/cpmeta/etcL2Fluxes"
    },
    "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": "2026-03-31T17:50:22.981916871Z",
    "stop": "2026-03-31T17:50:27.377089604Z",
    "submitter": {
      "name": "Ecosystem Thematic Centre",
      "self": {
        "comments": [],
        "label": "ICOS ETC",
        "uri": "http://meta.icos-cp.eu/resources/organizations/ETC"
      }
    }
  }
}