<?xml version="1.0" encoding="UTF-8"?>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2" location="Not provided because of security concerns.">
  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Ground based in situ observations of steel_canister at Villeneuve d'Ascq (FR0027U)" />
  <attribute name="keywords" value="carbon_dioxide, water_vapor, FR0027U, mass_fraction_of_carbon_monoxide_in_air, carbon_monoxide, air, mass_fraction_of_carbon_dioxide_in_air, mole_fraction_of_water_vapor_in_air, mole_fraction_of_methane_in_air, Villeneuve d'Ascq, CAMPAIGN, methane, EMEP" />
  <attribute name="id" value="RQKY-DVWV.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="CAMPAIGN, EMEP" />
  <attribute name="acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="doi" value="https://doi.org/10.48597/RQKY-DVWV" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Robert Wegener, carbon_dioxide, carbon_monoxide, methane, water_vapor - steel_canister at Villeneuve d'Ascq, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/RQKY-DVWV" />
  <attribute name="summary" value="Ground based in situ observations of steel_canister at Villeneuve d'Ascq (FR0027U). These measurements are gathered as a part of the following projects CAMPAIGN, EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: carbon_dioxide in air (mass_fraction_of_carbon_dioxide_in_air), carbon_dioxide in air (mass_fraction_of_carbon_dioxide_in_air), carbon_monoxide in air (mass_fraction_of_carbon_monoxide_in_air), carbon_monoxide in air (mass_fraction_of_carbon_monoxide_in_air), methane in air (mole_fraction_of_methane_in_air), methane in air (mole_fraction_of_methane_in_air), water_vapor in air (mole_fraction_of_water_vapor_in_air), water_vapor in air (mole_fraction_of_water_vapor_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="DE20L, Forschungszentrum Jülich, Institut für Energie- und Klimaforschung: Troposphäre (IEK-8), Wilhelm-Johnen-Straße, 52425, Juelich, Germany" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2022-11-01T00:00:00 UTC" />
  <attribute name="date_metadata_modified" value="2022-11-01T00:00:00 UTC" />
  <attribute name="creator_name" value="Robert Wegener" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="r.wegener@fz-juelich.de" />
  <attribute name="creator_institution" value="&quot;Forschungszentrum Jülich GmbH, Institut for Energy and Climate Research IEK8 Troposphere, FZJ&quot;" />
  <attribute name="contributor_name" value="Robert Wegener" />
  <attribute name="contributor_role" value="data submitter" />
  <attribute name="publisher_type" value="institution" />
  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_institution" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_email" value="ebas@nilu.no" />
  <attribute name="publisher_url" value="https://www.nilu.no/" />
  <attribute name="geospatial_bounds" value="POINT Z (50.611017 3.14035 70.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="50.611017" />
  <attribute name="geospatial_lat_max" type="double" value="50.611017" />
  <attribute name="geospatial_lon_min" type="double" value="3.14035" />
  <attribute name="geospatial_lon_max" type="double" value="3.14035" />
  <attribute name="geospatial_vertical_min" type="double" value="70.0" />
  <attribute name="geospatial_vertical_max" type="double" value="70.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2022-07-12T12:14:00 UTC" />
  <attribute name="time_coverage_end" value="2022-07-19T13:07:00 UTC" />
  <attribute name="time_coverage_duration" value="P0000-00-07T00:53:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-01T00:00:00" />
  <attribute name="timezone" value="UTC" />
  <attribute name="ebas_data_definition" value="EBAS_1.1" />
  <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="ebas_citation" value="Robert Wegener, carbon_dioxide, carbon_monoxide, methane, water_vapor - steel_canister at Villeneuve d'Ascq, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/RQKY-DVWV" />
  <attribute name="ebas_set_type_code" value="TI" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="RQKY-DVWV.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/RQKY-DVWV" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/RQKY-DVWV" />
  <attribute name="ebas_file_creation" value="2023-12-11T17:57:03.647956 UTC" />
  <attribute name="ebas_export_state" value="2023-02-15T13:32:44.860127 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="20220712121400" />
  <attribute name="ebas_revision_date" value="20221101000000" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="initial" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="1w" />
  <attribute name="ebas_resolution_code" value="1d" />
  <attribute name="ebas_station_code" value="FR0027U" />
  <attribute name="ebas_platform_code" value="FR0027S" />
  <attribute name="ebas_station_name" value="Villeneuve d'Ascq" />
  <attribute name="ebas_station_gaw_id" value="VDA" />
  <attribute name="ebas_station_land_use" value="Other" />
  <attribute name="ebas_station_setting" value="Suburban" />
  <attribute name="ebas_station_wmo_region" value="6" />
  <attribute name="ebas_station_latitude" value="50.611017" />
  <attribute name="ebas_station_longitude" value="3.14035" />
  <attribute name="ebas_station_altitude" value="70.0 m" />
  <attribute name="ebas_measurement_height" value="0.5 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_matrix" value="air" />
  <attribute name="ebas_laboratory_code" value="DE20L" />
  <attribute name="ebas_instrument_type" value="steel_canister" />
  <attribute name="ebas_instrument_name" value="SilcoCan_fr27" />
  <attribute name="ebas_instrument_manufacturer" value="Restek" />
  <attribute name="ebas_instrument_model" value="SilcoCan" />
  <attribute name="ebas_analytical_laboratory_code" value="DE20L" />
  <attribute name="ebas_analytical_measurement_technique" value="crds" />
  <attribute name="ebas_analytical_instrument_name" value="FZJ_CFKADS2270_IMP_2022" />
  <attribute name="ebas_analytical_instrument_manufacturer" value="Picarro" />
  <attribute name="ebas_analytical_instrument_model" value="G2401" />
  <attribute name="ebas_analytical_instrument_serial_number" value="CFKADS2270" />
  <attribute name="ebas_method_ref" value="DE20L_FZJ_CFKADS2270_IMP_2022" />
  <attribute name="ebas_inlet_type" value="Canister valve opening" />
  <attribute name="ebas_inlet_description" value="Silcosteel capillary with Na2S2O3 filter for ozone destruction after Helmig at al" />
  <attribute name="ebas_detection_limit_expl" value="Detection limit equals 3 times the precision" />
  <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy). Ref:http://www.atmos-meas-tech.net/8/2715/2015/" />
  <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
  <attribute name="ebas_zero_negative_values" value="Values below 1 pmol/mol are not reported by the instrument." />
  <attribute name="ebas_organization" value="DE20L, Forschungszentrum Jülich, , Institut für Energie- und Klimaforschung: Troposphäre (IEK-8), Wilhelm-Johnen-Straße, , 52425, Juelich, Germany" />
  <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
  <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
  <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
  <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
  <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
  <attribute name="ebas_originator" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
  <attribute name="ebas_submitter" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
  <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="_NCProperties" value="version=2,netcdf=4.9.0,hdf5=1.12.2" />
  <attribute name="Metadata_Conventions" value="Unidata Dataset Discovery v1.0" />
  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
  <attribute name="comment" value="{&#xA;    &quot;Data definition&quot;: &quot;EBAS_1.1&quot;,&#xA;    &quot;Data license&quot;: &quot;https://creativecommons.org/licenses/by/4.0/&quot;,&#xA;    &quot;Citation&quot;: &quot;Robert Wegener, carbon_dioxide, carbon_monoxide, methane, water_vapor - steel_canister at Villeneuve d'Ascq, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/RQKY-DVWV&quot;,&#xA;    &quot;Set type code&quot;: &quot;TI&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;RQKY-DVWV.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/RQKY-DVWV&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/RQKY-DVWV&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-12-11T17:57:03.647956 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2023-02-15T13:32:44.860127 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20220712121400&quot;,&#xA;    &quot;Revision date&quot;: &quot;20221101000000&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;initial&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;1w&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1d&quot;,&#xA;    &quot;Station code&quot;: &quot;FR0027U&quot;,&#xA;    &quot;Platform code&quot;: &quot;FR0027S&quot;,&#xA;    &quot;Station name&quot;: &quot;Villeneuve d'Ascq&quot;,&#xA;    &quot;Station GAW-ID&quot;: &quot;VDA&quot;,&#xA;    &quot;Station land use&quot;: &quot;Other&quot;,&#xA;    &quot;Station setting&quot;: &quot;Suburban&quot;,&#xA;    &quot;Station WMO region&quot;: &quot;6&quot;,&#xA;    &quot;Station latitude&quot;: &quot;50.611017&quot;,&#xA;    &quot;Station longitude&quot;: &quot;3.14035&quot;,&#xA;    &quot;Station altitude&quot;: &quot;70.0 m&quot;,&#xA;    &quot;Measurement height&quot;: &quot;0.5 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Matrix&quot;: &quot;air&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;DE20L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;steel_canister&quot;,&#xA;    &quot;Instrument name&quot;: &quot;SilcoCan_fr27&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;Restek&quot;,&#xA;    &quot;Instrument model&quot;: &quot;SilcoCan&quot;,&#xA;    &quot;Analytical laboratory code&quot;: &quot;DE20L&quot;,&#xA;    &quot;Analytical measurement technique&quot;: &quot;crds&quot;,&#xA;    &quot;Analytical instrument name&quot;: &quot;FZJ_CFKADS2270_IMP_2022&quot;,&#xA;    &quot;Analytical instrument manufacturer&quot;: &quot;Picarro&quot;,&#xA;    &quot;Analytical instrument model&quot;: &quot;G2401&quot;,&#xA;    &quot;Analytical instrument serial number&quot;: &quot;CFKADS2270&quot;,&#xA;    &quot;Method ref&quot;: &quot;DE20L_FZJ_CFKADS2270_IMP_2022&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Canister valve opening&quot;,&#xA;    &quot;Inlet description&quot;: &quot;Silcosteel capillary with Na2S2O3 filter for ozone destruction after Helmig at al&quot;,&#xA;    &quot;Detection limit expl.&quot;: &quot;Detection limit equals 3 times the precision&quot;,&#xA;    &quot;Measurement uncertainty expl.&quot;: &quot;Includes reproducibility (precision) + systematic errors (accuracy). Ref:http://www.atmos-meas-tech.net/8/2715/2015/&quot;,&#xA;    &quot;Zero/negative values code&quot;: &quot;Zero/negative impossible&quot;,&#xA;    &quot;Zero/negative values&quot;: &quot;Values below 1 pmol/mol are not reported by the instrument.&quot;,&#xA;    &quot;Organization&quot;: &quot;DE20L, Forschungszentrum Jülich, , Institut für Energie- und Klimaforschung: Troposphäre (IEK-8), Wilhelm-Johnen-Straße, , 52425, Juelich, Germany&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;CAMPAIGN, EMEP&quot;,&#xA;    &quot;Framework name&quot;: &quot;, European Monitoring and Evaluation Programme&quot;,&#xA;    &quot;Framework description&quot;: &quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems.&quot;,&#xA;    &quot;Framework contact name&quot;: &quot;Wenche Aas, Kjetil Tørseth&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;waa@nilu.no, kt@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany&quot;,&#xA;    &quot;Submitter&quot;: &quot;Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany&quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;Request acknowledgement details from data originator&quot;&#xA;}" />
  <attribute name="standard_name_vocabulary" value="CF-1.7, ACDD-1.3" />
  <attribute name="history" value="None" />
  <attribute name="creator_url" value="ebas.nilu.no" />
  <attribute name="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="time" length="6" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="carbon_dioxide_amean_qc_flags" length="1" />
  <dimension name="carbon_dioxide_precision_qc_flags" length="1" />
  <dimension name="carbon_monoxide_amean_qc_flags" length="1" />
  <dimension name="carbon_monoxide_precision_qc_flags" length="1" />
  <dimension name="methane_amean_qc_flags" length="1" />
  <dimension name="methane_precision_qc_flags" length="1" />
  <dimension name="water_vapor_amean_qc_flags" length="1" />
  <dimension name="water_vapor_precision_qc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2022-07-12T12:44:00Z" />
    <attribute name="time_coverage_end" value="2022-07-19T12:36:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="120864.0" />
    <attribute name="time_coverage_duration" value="P0Y0M6DT23H52M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-05-18" />
    <attribute name="nciso_version" value="2.4.8" />
  </group>
  <variable name="time_bnds" shape="time tbnds" type="double">
    <attribute name="long_name" value="time bounds for measurement" />
  </variable>
  <variable name="metadata_time_bnds" shape="metadata_time tbnds" type="double">
    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
  </variable>
  <variable name="carbon_dioxide_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_fraction_of_carbon_dioxide_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="umol/mol" />
    <attribute name="ancillary_variables" value="carbon_dioxide_amean_qc carbon_dioxide_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20221101000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_station_code" value="FR0027U" />
    <attribute name="ebas_platform_code" value="FR0027S" />
    <attribute name="ebas_station_name" value="Villeneuve d'Ascq" />
    <attribute name="ebas_station_gaw_id" value="VDA" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="50.611017" />
    <attribute name="ebas_station_longitude" value="3.14035" />
    <attribute name="ebas_station_altitude" value="70.0 m" />
    <attribute name="ebas_measurement_height" value="0.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="carbon_dioxide" />
    <attribute name="ebas_unit" value="umol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="DE20L" />
    <attribute name="ebas_instrument_type" value="steel_canister" />
    <attribute name="ebas_instrument_name" value="SilcoCan_fr27" />
    <attribute name="ebas_instrument_manufacturer" value="Restek" />
    <attribute name="ebas_instrument_model" value="SilcoCan" />
    <attribute name="ebas_analytical_laboratory_code" value="DE20L" />
    <attribute name="ebas_analytical_measurement_technique" value="crds" />
    <attribute name="ebas_analytical_instrument_name" value="FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Picarro" />
    <attribute name="ebas_analytical_instrument_model" value="G2401" />
    <attribute name="ebas_analytical_instrument_serial_number" value="CFKADS2270" />
    <attribute name="ebas_method_ref" value="DE20L_FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_inlet_type" value="Canister valve opening" />
    <attribute name="ebas_inlet_description" value="Silcosteel capillary with Na2S2O3 filter for ozone destruction after Helmig at al" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit equals 3 times the precision" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy). Ref:http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_zero_negative_values" value="Values below 1 pmol/mol are not reported by the instrument." />
    <attribute name="ebas_organization" value="DE20L, Forschungszentrum Jülich, , Institut für Energie- und Klimaforschung: Troposphäre (IEK-8), Wilhelm-Johnen-Straße, , 52425, Juelich, Germany" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_submitter" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </variable>
  <variable name="carbon_dioxide_amean_qc" shape="carbon_dioxide_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="carbon_dioxide_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="carbon_dioxide_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_fraction_of_carbon_dioxide_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="umol/mol" />
    <attribute name="ancillary_variables" value="carbon_dioxide_precision_qc carbon_dioxide_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20221101000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_station_code" value="FR0027U" />
    <attribute name="ebas_platform_code" value="FR0027S" />
    <attribute name="ebas_station_name" value="Villeneuve d'Ascq" />
    <attribute name="ebas_station_gaw_id" value="VDA" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="50.611017" />
    <attribute name="ebas_station_longitude" value="3.14035" />
    <attribute name="ebas_station_altitude" value="70.0 m" />
    <attribute name="ebas_measurement_height" value="0.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="carbon_dioxide" />
    <attribute name="ebas_unit" value="umol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="DE20L" />
    <attribute name="ebas_instrument_type" value="steel_canister" />
    <attribute name="ebas_instrument_name" value="SilcoCan_fr27" />
    <attribute name="ebas_instrument_manufacturer" value="Restek" />
    <attribute name="ebas_instrument_model" value="SilcoCan" />
    <attribute name="ebas_analytical_laboratory_code" value="DE20L" />
    <attribute name="ebas_analytical_measurement_technique" value="crds" />
    <attribute name="ebas_analytical_instrument_name" value="FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Picarro" />
    <attribute name="ebas_analytical_instrument_model" value="G2401" />
    <attribute name="ebas_analytical_instrument_serial_number" value="CFKADS2270" />
    <attribute name="ebas_method_ref" value="DE20L_FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_inlet_type" value="Canister valve opening" />
    <attribute name="ebas_inlet_description" value="Silcosteel capillary with Na2S2O3 filter for ozone destruction after Helmig at al" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit equals 3 times the precision" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy). Ref:http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_zero_negative_values" value="Values below 1 pmol/mol are not reported by the instrument." />
    <attribute name="ebas_organization" value="DE20L, Forschungszentrum Jülich, , Institut für Energie- und Klimaforschung: Troposphäre (IEK-8), Wilhelm-Johnen-Straße, , 52425, Juelich, Germany" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_submitter" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </variable>
  <variable name="carbon_dioxide_precision_qc" shape="carbon_dioxide_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="carbon_dioxide_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="carbon_monoxide_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_fraction_of_carbon_monoxide_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="carbon_monoxide_amean_qc carbon_monoxide_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20221101000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_station_code" value="FR0027U" />
    <attribute name="ebas_platform_code" value="FR0027S" />
    <attribute name="ebas_station_name" value="Villeneuve d'Ascq" />
    <attribute name="ebas_station_gaw_id" value="VDA" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="50.611017" />
    <attribute name="ebas_station_longitude" value="3.14035" />
    <attribute name="ebas_station_altitude" value="70.0 m" />
    <attribute name="ebas_measurement_height" value="0.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="carbon_monoxide" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="DE20L" />
    <attribute name="ebas_instrument_type" value="steel_canister" />
    <attribute name="ebas_instrument_name" value="SilcoCan_fr27" />
    <attribute name="ebas_instrument_manufacturer" value="Restek" />
    <attribute name="ebas_instrument_model" value="SilcoCan" />
    <attribute name="ebas_analytical_laboratory_code" value="DE20L" />
    <attribute name="ebas_analytical_measurement_technique" value="crds" />
    <attribute name="ebas_analytical_instrument_name" value="FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Picarro" />
    <attribute name="ebas_analytical_instrument_model" value="G2401" />
    <attribute name="ebas_analytical_instrument_serial_number" value="CFKADS2270" />
    <attribute name="ebas_method_ref" value="DE20L_FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_inlet_type" value="Canister valve opening" />
    <attribute name="ebas_inlet_description" value="Silcosteel capillary with Na2S2O3 filter for ozone destruction after Helmig at al" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit equals 3 times the precision" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy). Ref:http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_zero_negative_values" value="Values below 1 pmol/mol are not reported by the instrument." />
    <attribute name="ebas_organization" value="DE20L, Forschungszentrum Jülich, , Institut für Energie- und Klimaforschung: Troposphäre (IEK-8), Wilhelm-Johnen-Straße, , 52425, Juelich, Germany" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_submitter" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </variable>
  <variable name="carbon_monoxide_amean_qc" shape="carbon_monoxide_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="carbon_monoxide_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="carbon_monoxide_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_fraction_of_carbon_monoxide_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="carbon_monoxide_precision_qc carbon_monoxide_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20221101000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_station_code" value="FR0027U" />
    <attribute name="ebas_platform_code" value="FR0027S" />
    <attribute name="ebas_station_name" value="Villeneuve d'Ascq" />
    <attribute name="ebas_station_gaw_id" value="VDA" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="50.611017" />
    <attribute name="ebas_station_longitude" value="3.14035" />
    <attribute name="ebas_station_altitude" value="70.0 m" />
    <attribute name="ebas_measurement_height" value="0.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="carbon_monoxide" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="DE20L" />
    <attribute name="ebas_instrument_type" value="steel_canister" />
    <attribute name="ebas_instrument_name" value="SilcoCan_fr27" />
    <attribute name="ebas_instrument_manufacturer" value="Restek" />
    <attribute name="ebas_instrument_model" value="SilcoCan" />
    <attribute name="ebas_analytical_laboratory_code" value="DE20L" />
    <attribute name="ebas_analytical_measurement_technique" value="crds" />
    <attribute name="ebas_analytical_instrument_name" value="FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Picarro" />
    <attribute name="ebas_analytical_instrument_model" value="G2401" />
    <attribute name="ebas_analytical_instrument_serial_number" value="CFKADS2270" />
    <attribute name="ebas_method_ref" value="DE20L_FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_inlet_type" value="Canister valve opening" />
    <attribute name="ebas_inlet_description" value="Silcosteel capillary with Na2S2O3 filter for ozone destruction after Helmig at al" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit equals 3 times the precision" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy). Ref:http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_zero_negative_values" value="Values below 1 pmol/mol are not reported by the instrument." />
    <attribute name="ebas_organization" value="DE20L, Forschungszentrum Jülich, , Institut für Energie- und Klimaforschung: Troposphäre (IEK-8), Wilhelm-Johnen-Straße, , 52425, Juelich, Germany" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_submitter" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </variable>
  <variable name="carbon_monoxide_precision_qc" shape="carbon_monoxide_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="carbon_monoxide_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="methane_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_methane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="methane_amean_qc methane_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20221101000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_station_code" value="FR0027U" />
    <attribute name="ebas_platform_code" value="FR0027S" />
    <attribute name="ebas_station_name" value="Villeneuve d'Ascq" />
    <attribute name="ebas_station_gaw_id" value="VDA" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="50.611017" />
    <attribute name="ebas_station_longitude" value="3.14035" />
    <attribute name="ebas_station_altitude" value="70.0 m" />
    <attribute name="ebas_measurement_height" value="0.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="methane" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="DE20L" />
    <attribute name="ebas_instrument_type" value="steel_canister" />
    <attribute name="ebas_instrument_name" value="SilcoCan_fr27" />
    <attribute name="ebas_instrument_manufacturer" value="Restek" />
    <attribute name="ebas_instrument_model" value="SilcoCan" />
    <attribute name="ebas_analytical_laboratory_code" value="DE20L" />
    <attribute name="ebas_analytical_measurement_technique" value="crds" />
    <attribute name="ebas_analytical_instrument_name" value="FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Picarro" />
    <attribute name="ebas_analytical_instrument_model" value="G2401" />
    <attribute name="ebas_analytical_instrument_serial_number" value="CFKADS2270" />
    <attribute name="ebas_method_ref" value="DE20L_FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_inlet_type" value="Canister valve opening" />
    <attribute name="ebas_inlet_description" value="Silcosteel capillary with Na2S2O3 filter for ozone destruction after Helmig at al" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit equals 3 times the precision" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy). Ref:http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_zero_negative_values" value="Values below 1 pmol/mol are not reported by the instrument." />
    <attribute name="ebas_organization" value="DE20L, Forschungszentrum Jülich, , Institut für Energie- und Klimaforschung: Troposphäre (IEK-8), Wilhelm-Johnen-Straße, , 52425, Juelich, Germany" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_submitter" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </variable>
  <variable name="methane_amean_qc" shape="methane_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="methane_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="methane_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_methane_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="methane_precision_qc methane_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20221101000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_station_code" value="FR0027U" />
    <attribute name="ebas_platform_code" value="FR0027S" />
    <attribute name="ebas_station_name" value="Villeneuve d'Ascq" />
    <attribute name="ebas_station_gaw_id" value="VDA" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="50.611017" />
    <attribute name="ebas_station_longitude" value="3.14035" />
    <attribute name="ebas_station_altitude" value="70.0 m" />
    <attribute name="ebas_measurement_height" value="0.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="methane" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="DE20L" />
    <attribute name="ebas_instrument_type" value="steel_canister" />
    <attribute name="ebas_instrument_name" value="SilcoCan_fr27" />
    <attribute name="ebas_instrument_manufacturer" value="Restek" />
    <attribute name="ebas_instrument_model" value="SilcoCan" />
    <attribute name="ebas_analytical_laboratory_code" value="DE20L" />
    <attribute name="ebas_analytical_measurement_technique" value="crds" />
    <attribute name="ebas_analytical_instrument_name" value="FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Picarro" />
    <attribute name="ebas_analytical_instrument_model" value="G2401" />
    <attribute name="ebas_analytical_instrument_serial_number" value="CFKADS2270" />
    <attribute name="ebas_method_ref" value="DE20L_FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_inlet_type" value="Canister valve opening" />
    <attribute name="ebas_inlet_description" value="Silcosteel capillary with Na2S2O3 filter for ozone destruction after Helmig at al" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit equals 3 times the precision" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy). Ref:http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_zero_negative_values" value="Values below 1 pmol/mol are not reported by the instrument." />
    <attribute name="ebas_organization" value="DE20L, Forschungszentrum Jülich, , Institut für Energie- und Klimaforschung: Troposphäre (IEK-8), Wilhelm-Johnen-Straße, , 52425, Juelich, Germany" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_submitter" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </variable>
  <variable name="methane_precision_qc" shape="methane_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="methane_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="water_vapor_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_water_vapor_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="umol/mol" />
    <attribute name="ancillary_variables" value="water_vapor_amean_qc water_vapor_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20221101000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_station_code" value="FR0027U" />
    <attribute name="ebas_platform_code" value="FR0027S" />
    <attribute name="ebas_station_name" value="Villeneuve d'Ascq" />
    <attribute name="ebas_station_gaw_id" value="VDA" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="50.611017" />
    <attribute name="ebas_station_longitude" value="3.14035" />
    <attribute name="ebas_station_altitude" value="70.0 m" />
    <attribute name="ebas_measurement_height" value="0.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="water_vapor" />
    <attribute name="ebas_unit" value="umol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="DE20L" />
    <attribute name="ebas_instrument_type" value="steel_canister" />
    <attribute name="ebas_instrument_name" value="SilcoCan_fr27" />
    <attribute name="ebas_instrument_manufacturer" value="Restek" />
    <attribute name="ebas_instrument_model" value="SilcoCan" />
    <attribute name="ebas_analytical_laboratory_code" value="DE20L" />
    <attribute name="ebas_analytical_measurement_technique" value="crds" />
    <attribute name="ebas_analytical_instrument_name" value="FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Picarro" />
    <attribute name="ebas_analytical_instrument_model" value="G2401" />
    <attribute name="ebas_analytical_instrument_serial_number" value="CFKADS2270" />
    <attribute name="ebas_method_ref" value="DE20L_FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_inlet_type" value="Canister valve opening" />
    <attribute name="ebas_inlet_description" value="Silcosteel capillary with Na2S2O3 filter for ozone destruction after Helmig at al" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit equals 3 times the precision" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy). Ref:http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_zero_negative_values" value="Values below 1 pmol/mol are not reported by the instrument." />
    <attribute name="ebas_organization" value="DE20L, Forschungszentrum Jülich, , Institut für Energie- und Klimaforschung: Troposphäre (IEK-8), Wilhelm-Johnen-Straße, , 52425, Juelich, Germany" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_submitter" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </variable>
  <variable name="water_vapor_amean_qc" shape="water_vapor_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="water_vapor_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="water_vapor_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_water_vapor_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="umol/mol" />
    <attribute name="ancillary_variables" value="water_vapor_precision_qc water_vapor_precision_ebasmetadata" />
    <attribute name="cell_methods" value="time: precision" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20221101000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial" />
    <attribute name="ebas_statistics" value="precision" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_station_code" value="FR0027U" />
    <attribute name="ebas_platform_code" value="FR0027S" />
    <attribute name="ebas_station_name" value="Villeneuve d'Ascq" />
    <attribute name="ebas_station_gaw_id" value="VDA" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="50.611017" />
    <attribute name="ebas_station_longitude" value="3.14035" />
    <attribute name="ebas_station_altitude" value="70.0 m" />
    <attribute name="ebas_measurement_height" value="0.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="water_vapor" />
    <attribute name="ebas_unit" value="umol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="DE20L" />
    <attribute name="ebas_instrument_type" value="steel_canister" />
    <attribute name="ebas_instrument_name" value="SilcoCan_fr27" />
    <attribute name="ebas_instrument_manufacturer" value="Restek" />
    <attribute name="ebas_instrument_model" value="SilcoCan" />
    <attribute name="ebas_analytical_laboratory_code" value="DE20L" />
    <attribute name="ebas_analytical_measurement_technique" value="crds" />
    <attribute name="ebas_analytical_instrument_name" value="FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Picarro" />
    <attribute name="ebas_analytical_instrument_model" value="G2401" />
    <attribute name="ebas_analytical_instrument_serial_number" value="CFKADS2270" />
    <attribute name="ebas_method_ref" value="DE20L_FZJ_CFKADS2270_IMP_2022" />
    <attribute name="ebas_inlet_type" value="Canister valve opening" />
    <attribute name="ebas_inlet_description" value="Silcosteel capillary with Na2S2O3 filter for ozone destruction after Helmig at al" />
    <attribute name="ebas_detection_limit_expl" value="Detection limit equals 3 times the precision" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy). Ref:http://www.atmos-meas-tech.net/8/2715/2015/" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_zero_negative_values" value="Values below 1 pmol/mol are not reported by the instrument." />
    <attribute name="ebas_organization" value="DE20L, Forschungszentrum Jülich, , Institut für Energie- und Klimaforschung: Troposphäre (IEK-8), Wilhelm-Johnen-Straße, , 52425, Juelich, Germany" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_submitter" value="Wegener, Robert, r.wegener@fz-juelich.de, Forschungszentrum Jülich GmbH, FZJ, Institut for Energy and Climate Research IEK8 Troposphere, , , 52425, Jülich, Germany" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </variable>
  <variable name="water_vapor_precision_qc" shape="water_vapor_precision_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="water_vapor_precision_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="metadata_time" shape="metadata_time" type="double">
    <attribute name="long_name" value="time of ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
</netcdf>
