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  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="VOC (volatile organic compounds) at Zürich-Kaserne" />
  <attribute name="summary" value="VOC (volatile organic compounds) at Zürich-Kaserne. These measurements are gathered as a part of the following projects ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['1-3-butadiene in air (mass_concentration_of_1-3-butadiene_in_air)', '1-3-butadiene in air (mole_fraction_of_13_butadiene_in_air)', '2-methylbutane in air (mass_concentration_of_2-methylbutane_in_air)', '2-methylbutane in air (mole_fraction_of_2_methylbutane_in_air)', '2-methylpropane in air (mass_concentration_of_2-methylpropane_in_air)', '2-methylpropane in air (mole_fraction_of_2_methylpropane_in_air)', 'acetonitrile in air (mole_fraction_of_aceto_nitrile_in_air)', 'alpha-pinene in air (mole_fraction_of_alpha-pinene_in_air)', 'alpha-pinene in air (mole_fraction_of_alpha_pinene_in_air)', 'benzene in air (mole_fraction_of_benzene_in_air)', 'butanone in air (mole_fraction_of_butanone_in_air)', 'butanone in air (mass_concentration_of_butanone_in_air)', 'butenes in air (mole_fraction_of_sum_butenes_in_air)', 'ethanal in air (mole_fraction_of_ethanal_in_air)', 'ethanal in air (mass_concentration_of_ethanal_in_air)', 'ethane in air (mass_concentration_of_ethane_in_air)', 'ethane in air (mole_fraction_of_ethane_in_air)', 'ethanol in air (mole_fraction_of_ethanol_in_air)', 'ethanol in air (mass_concentration_of_ethanol_in_air)', 'ethene in air (mole_fraction_of_ethene_in_air)', 'ethylbenzene in air (mole_fraction_of_ethylbenzene_in_air)', 'ethyne in air (mole_fraction_of_ethyne_in_air)', 'isoheptanes in air', 'isohexanes in air', 'isoprene in air (mass_concentration_of_isoprene_in_air)', 'isoprene in air (mole_fraction_of_isoprene_in_air)', 'limonene in air (mole_fraction_of_limonene_in_air)', 'm-p-xylene in air (mole_fraction_of_m-p-xylene_in_air)', 'm-p-xylene in air (mole_fraction_of_m_p_xylene_in_air)', 'methanol in air (mole_fraction_of_methanol_in_air)', 'n-butane in air (mass_concentration_of_n-butane_in_air)', 'n-butane in air (mole_fraction_of_butane_in_air)', 'n-hexane in air (mass_concentration_of_n-hexane_in_air)', 'n-hexane in air (mole_fraction_of_hexane_in_air)', 'n-pentane in air (mass_concentration_of_n-pentane_in_air)', 'n-pentane in air (mole_fraction_of_pentane_in_air)', 'n-propanol in air (mole_fraction_of_n-propanol_in_air)', 'n-propanol in air (mass_concentration_of_propanol_in_air)', 'o-xylene in air (mole_fraction_of_o-xylene_in_air)', 'o-xylene in air (mole_fraction_of_o_xylene_in_air)', 'pentenes in air (mole_fraction_of_sum_pentenes_in_air)', 'propane in air (mass_concentration_of_propane_in_air)', 'propane in air (mole_fraction_of_propane_in_air)', 'propanone in air (mole_fraction_of_propanone_in_air)', 'propanone in air (mass_concentration_of_propanone_in_air)', 'propene in air (mole_fraction_of_propene_in_air)', 'toluene in air (mole_fraction_of_toluene_in_air)']" />
  <attribute name="keywords" value="Zürich-Kaserne CH0010U 1-3-butadiene 2-methylbutane 2-methylpropane acetonitrile alpha-pinene benzene butanone butenes ethanal ethane ethanol ethene ethylbenzene ethyne isoheptanes isohexanes isoprene limonene m-p-xylene methanol n-butane n-hexane n-pentane n-propanol o-xylene pentenes propane propanone propene toluene air ATMO-ACCESS EMEP GAW-WDCRG RI-URBANS mass_concentration_of_1-3-butadiene_in_air mole_fraction_of_13_butadiene_in_air mass_concentration_of_2-methylbutane_in_air mole_fraction_of_2_methylbutane_in_air mass_concentration_of_2-methylpropane_in_air mole_fraction_of_2_methylpropane_in_air mole_fraction_of_aceto_nitrile_in_air mole_fraction_of_alpha-pinene_in_air mole_fraction_of_alpha_pinene_in_air mole_fraction_of_benzene_in_air mole_fraction_of_butanone_in_air mass_concentration_of_butanone_in_air mole_fraction_of_sum_butenes_in_air mole_fraction_of_ethanal_in_air mass_concentration_of_ethanal_in_air mass_concentration_of_ethane_in_air mole_fraction_of_ethane_in_air mole_fraction_of_ethanol_in_air mass_concentration_of_ethanol_in_air mole_fraction_of_ethene_in_air mole_fraction_of_ethylbenzene_in_air mole_fraction_of_ethyne_in_air mass_concentration_of_isoprene_in_air mole_fraction_of_isoprene_in_air mole_fraction_of_limonene_in_air mole_fraction_of_m-p-xylene_in_air mole_fraction_of_m_p_xylene_in_air mole_fraction_of_methanol_in_air mass_concentration_of_n-butane_in_air mole_fraction_of_butane_in_air mass_concentration_of_n-hexane_in_air mole_fraction_of_hexane_in_air mass_concentration_of_n-pentane_in_air mole_fraction_of_pentane_in_air mole_fraction_of_n-propanol_in_air mass_concentration_of_propanol_in_air mole_fraction_of_o-xylene_in_air mole_fraction_of_o_xylene_in_air mole_fraction_of_sum_pentenes_in_air mass_concentration_of_propane_in_air mole_fraction_of_propane_in_air mole_fraction_of_propanone_in_air mass_concentration_of_propanone_in_air mole_fraction_of_propene_in_air mole_fraction_of_toluene_in_air" />
  <attribute name="id" value="M53J-FRRR.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS" />
  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/M53J-FRRR" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Le Bras, Z., Reimann, S., ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS, 2024, VOC (volatile organic compounds) at Zürich-Kaserne, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/M53J-FRRR" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="CH01L &quot;Swiss Federal Laboratories for Materials Science and Technology&quot; EMPA &quot;Section Air Pollution&quot; &quot;Überlandstrasse 133&quot; 8600 Dübendorf Switzerland" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2025-04-11T08:11:09.504240Z" />
  <attribute name="date_metadata_modified" value="2024-06-06T08:13:57Z" />
  <attribute name="creator_name" value="Zoe Le Bras, Stefan Reimann" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="zoe.lebras@empa.ch, " />
  <attribute name="creator_institution" value="&quot;Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Air Pollution, EMPA&quot;, " />
  <attribute name="contributor_name" value="Zoe Le Bras" />
  <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 (8.530419 47.377586 502.5)" />
  <attribute name="geospatial_lat_min" type="double" value="47.377586" />
  <attribute name="geospatial_lat_max" type="double" value="47.377586" />
  <attribute name="geospatial_lon_min" type="double" value="8.530419" />
  <attribute name="geospatial_lon_max" type="double" value="8.530419" />
  <attribute name="geospatial_vertical_min" type="double" value="502.5" />
  <attribute name="geospatial_vertical_max" type="double" value="502.5" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="time_coverage_start" value="2023-01-01T00:00:00Z" />
  <attribute name="time_coverage_end" value="2023-12-31T23:30:00Z" />
  <attribute name="time_coverage_duration" value="P0000-11-30T23:30:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-00T01:00:00" />
  <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="Le Bras, Z., Reimann, S., ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS, 2024, VOC (volatile organic compounds) at Zürich-Kaserne, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/M53J-FRRR" />
  <attribute name="ebas_set_type_code" value="TI" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="M53J-FRRR.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/M53J-FRRR" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/M53J-FRRR" />
  <attribute name="ebas_file_creation" value="2026-06-12T12:15:13.199447Z" />
  <attribute name="ebas_export_state" value="2025-04-11T08:11:09.504240Z" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="2023-01-01T00:00:00.000000Z" />
  <attribute name="ebas_revision_date" value="2024-06-06T08:13:57.000000Z" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="automatically generated by a script from Empa" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="1y" />
  <attribute name="ebas_resolution_code" value="1h" />
  <attribute name="ebas_station_code" value="CH0010U" />
  <attribute name="ebas_platform_code" value="CH0010S" />
  <attribute name="ebas_station_name" value="Zürich-Kaserne" />
  <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
  <attribute name="ebas_station_land_use" value="Residential" />
  <attribute name="ebas_station_setting" value="Urban and center city" />
  <attribute name="ebas_station_wmo_region" type="long" value="6" />
  <attribute name="ebas_station_latitude" type="double" value="47.377586" />
  <attribute name="ebas_station_longitude" type="double" value="8.530419" />
  <attribute name="ebas_station_altitude" value="409.0 m" />
  <attribute name="ebas_measurement_altitude" value="502.5 m" />
  <attribute name="ebas_measurement_height" value="3.5 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_matrix" value="air" />
  <attribute name="ebas_laboratory_code" value="CH01L" />
  <attribute name="ebas_instrument_type" value="online_gc" />
  <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
  <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
  <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+7890B GC/FID-FID" />
  <attribute name="ebas_instrument_serial_number" value="cn24502278" />
  <attribute name="ebas_method_ref" value="CH01L_MARKES_GC_FID_VOCAIR_ZUE" />
  <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
  <attribute name="ebas_calibration_scale" value="NPL" />
  <attribute name="ebas_calibration_standard_id" value="D95441" />
  <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling" />
  <attribute name="ebas_inlet_type" value="Hat or hood" />
  <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
  <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
  <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
  <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
  <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
  <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
  <attribute name="ebas_framework_acronym" value="ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS" />
  <attribute name="ebas_framework_name" value="Sustainable Access to Atmospheric Research Facilities, European Monitoring and Evaluation Programme, World Data Centre for Reactive Gases, RI-URBANS" />
  <attribute name="ebas_framework_description" value="&quot;ATMO-ACCESS is the organized response of distributed atmospheric research facilities for developing a pilot for a new model of Integrating Activities. The project will deliver a series of recommendations for establishing a comprehensive and sustainable framework for access to distributed atmospheric Research Infrastructures (RI), ensuring integrated access to and optimised use of the services they provide.&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., The World Data Centre for Reactive Gases is the data repository and archive for reactive gases of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme., " />
  <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth, Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Le Bras, Zoe, zoe.lebras@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Laboratory for Air Pollution, Ueberlandstrasse 129, , 8600, Duebendorf, Switzerland&quot;, &quot;Reimann, Stefan, , , , , , , , , &quot;" />
  <attribute name="ebas_submitter" value="&quot;Le Bras, Zoe, zoe.lebras@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Laboratory for Air Pollution, Ueberlandstrasse 129, , 8600, Duebendorf, Switzerland&quot;" />
  <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS. Request acknowledgement details from data originator" />
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  <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="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="4459" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="qc_1_3_butadiene_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_1_3_butadiene_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_1_3_butadiene_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_1_3_butadiene_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_1_3_butadiene_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_1_3_butadiene_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_2_methylbutane_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_2_methylbutane_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_2_methylbutane_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_2_methylbutane_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_2_methylbutane_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_2_methylbutane_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_2_methylpropane_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_2_methylpropane_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_2_methylpropane_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_2_methylpropane_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_2_methylpropane_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_2_methylpropane_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_acetonitrile_amean_flags" length="2" />
  <dimension name="qc_acetonitrile_ExpUnc2s_flags" length="2" />
  <dimension name="qc_acetonitrile_precision_flags" length="2" />
  <dimension name="qc_alpha_pinene_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_alpha_pinene_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_alpha_pinene_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_alpha_pinene_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_alpha_pinene_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_alpha_pinene_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_benzene_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_benzene_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_benzene_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_benzene_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_benzene_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_benzene_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_butanone_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_butanone_ug_per_m3_amean_flags" length="2" />
  <dimension name="qc_butanone_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_butanone_ug_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_butanone_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_butanone_ug_per_m3_precision_flags" length="2" />
  <dimension name="qc_butenes_amean_flags" length="2" />
  <dimension name="qc_butenes_ExpUnc2s_flags" length="2" />
  <dimension name="qc_butenes_precision_flags" length="2" />
  <dimension name="qc_ethanal_nmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_ethanal_ug_per_m3_amean_flags" length="2" />
  <dimension name="qc_ethanal_nmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_ethanal_ug_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_ethanal_nmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_ethanal_ug_per_m3_precision_flags" length="2" />
  <dimension name="qc_ethane_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_ethane_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_ethane_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_ethane_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_ethane_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_ethane_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_ethanol_nmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_ethanol_ug_per_m3_amean_flags" length="2" />
  <dimension name="qc_ethanol_nmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_ethanol_ug_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_ethanol_nmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_ethanol_ug_per_m3_precision_flags" length="2" />
  <dimension name="qc_ethene_amean_flags" length="2" />
  <dimension name="qc_ethene_ExpUnc2s_flags" length="2" />
  <dimension name="qc_ethene_precision_flags" length="2" />
  <dimension name="qc_ethylbenzene_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_ethylbenzene_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_ethylbenzene_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_ethylbenzene_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_ethylbenzene_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_ethylbenzene_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_ethyne_amean_flags" length="2" />
  <dimension name="qc_ethyne_ExpUnc2s_flags" length="2" />
  <dimension name="qc_ethyne_precision_flags" length="2" />
  <dimension name="qc_isoheptanes_amean_flags" length="2" />
  <dimension name="qc_isoheptanes_ExpUnc2s_flags" length="2" />
  <dimension name="qc_isoheptanes_precision_flags" length="2" />
  <dimension name="qc_isohexanes_amean_flags" length="2" />
  <dimension name="qc_isohexanes_ExpUnc2s_flags" length="2" />
  <dimension name="qc_isohexanes_precision_flags" length="2" />
  <dimension name="qc_isoprene_ng_per_m3_amean_flags" length="1" />
  <dimension name="qc_isoprene_pmol_per_mol_amean_flags" length="1" />
  <dimension name="qc_isoprene_ng_per_m3_ExpUnc2s_flags" length="1" />
  <dimension name="qc_isoprene_pmol_per_mol_ExpUnc2s_flags" length="1" />
  <dimension name="qc_isoprene_ng_per_m3_precision_flags" length="1" />
  <dimension name="qc_isoprene_pmol_per_mol_precision_flags" length="1" />
  <dimension name="qc_limonene_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_limonene_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_limonene_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_limonene_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_limonene_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_limonene_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_m_p_xylene_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_m_p_xylene_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_m_p_xylene_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_m_p_xylene_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_m_p_xylene_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_m_p_xylene_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_methanol_amean_flags" length="2" />
  <dimension name="qc_methanol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_methanol_precision_flags" length="2" />
  <dimension name="qc_n_butane_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_n_butane_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_n_butane_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_n_butane_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_n_butane_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_n_butane_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_n_hexane_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_n_hexane_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_n_hexane_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_n_hexane_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_n_hexane_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_n_hexane_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_n_pentane_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_n_pentane_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_n_pentane_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_n_pentane_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_n_pentane_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_n_pentane_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_n_propanol_nmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_n_propanol_ug_per_m3_amean_flags" length="2" />
  <dimension name="qc_n_propanol_nmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_n_propanol_ug_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_n_propanol_nmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_n_propanol_ug_per_m3_precision_flags" length="2" />
  <dimension name="qc_o_xylene_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_o_xylene_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_o_xylene_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_o_xylene_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_o_xylene_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_o_xylene_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_pentenes_amean_flags" length="2" />
  <dimension name="qc_pentenes_ExpUnc2s_flags" length="2" />
  <dimension name="qc_pentenes_precision_flags" length="2" />
  <dimension name="qc_propane_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_propane_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_propane_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_propane_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_propane_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_propane_pmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_propanone_nmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_propanone_ug_per_m3_amean_flags" length="2" />
  <dimension name="qc_propanone_nmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_propanone_ug_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_propanone_nmol_per_mol_precision_flags" length="2" />
  <dimension name="qc_propanone_ug_per_m3_precision_flags" length="2" />
  <dimension name="qc_propene_amean_flags" length="2" />
  <dimension name="qc_propene_ExpUnc2s_flags" length="2" />
  <dimension name="qc_propene_precision_flags" length="2" />
  <dimension name="qc_toluene_ng_per_m3_amean_flags" length="2" />
  <dimension name="qc_toluene_pmol_per_mol_amean_flags" length="2" />
  <dimension name="qc_toluene_ng_per_m3_ExpUnc2s_flags" length="2" />
  <dimension name="qc_toluene_pmol_per_mol_ExpUnc2s_flags" length="2" />
  <dimension name="qc_toluene_ng_per_m3_precision_flags" length="2" />
  <dimension name="qc_toluene_pmol_per_mol_precision_flags" length="2" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2023-01-01T00:10:00Z" />
    <attribute name="time_coverage_end" value="2023-12-31T23:19:59Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="7073.0" />
    <attribute name="time_coverage_duration" value="P0Y0M364DT23H9M59.999S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-07-07" />
    <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="v_1_3_butadiene_ng_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_1-3-butadiene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_1_3_butadiene_ng_per_m3_amean meta_1_3_butadiene_ng_per_m3_amean" />
    <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="2024-06-06T08:13:57.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="automatically generated by a script from Empa" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_station_code" value="CH0010U" />
    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
    <attribute name="ebas_station_other_ids" value="CH0010A(Airbase)" />
    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="47.377586" />
    <attribute name="ebas_station_longitude" type="double" value="8.530419" />
    <attribute name="ebas_station_altitude" value="409.0 m" />
    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-3-butadiene" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
    <attribute name="ebas_instrument_model" value="Air Server-xr+UNITY-xr+7890B GC/FID-FID" />
    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARKES_GC_FID_VOCAIR_ZUE" />
    <attribute name="ebas_standard_method" value="SOP=ACTRIS_VOC_2014" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="D95441" />
    <attribute name="ebas_secondary_standard_id" value="Duebendorf air; RIX-filling" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_name" value="Sustainable Access to Atmospheric Research Facilities, European Monitoring and Evaluation Programme, World Data Centre for Reactive Gases, RI-URBANS" />
    <attribute name="ebas_framework_description" value="&quot;ATMO-ACCESS is the organized response of distributed atmospheric research facilities for developing a pilot for a new model of Integrating Activities. The project will deliver a series of recommendations for establishing a comprehensive and sustainable framework for access to distributed atmospheric Research Infrastructures (RI), ensuring integrated access to and optimised use of the services they provide.&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., The World Data Centre for Reactive Gases is the data repository and archive for reactive gases of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme., " />
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    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.41. Detection limit converted from '2.0 pmol/mol' to '5.0 ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 2.41." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/1-3-butadienemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="1,3-butadiene mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
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    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
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    <attribute name="actris_framework_preferred_term" value="ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_1_3_butadiene_ng_per_m3_amean" shape="qc_1_3_butadiene_ng_per_m3_amean_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="meta_1_3_butadiene_ng_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_1_3_butadiene_pmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_13_butadiene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
    <attribute name="ancillary_variables" value="qc_1_3_butadiene_pmol_per_mol_amean meta_1_3_butadiene_pmol_per_mol_amean" />
    <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="2024-06-06T08:13:57.000000Z" />
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    <attribute name="ebas_version_description" value="automatically generated by a script from Empa" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="47.377586" />
    <attribute name="ebas_station_longitude" type="double" value="8.530419" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="1-3-butadiene" />
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    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="online_gc" />
    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
    <attribute name="ebas_instrument_manufacturer" value="MARKES+MARKES+Agilent" />
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    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
    <attribute name="ebas_method_ref" value="CH01L_MARKES_GC_FID_VOCAIR_ZUE" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/1-3-butadieneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="1,3-butadiene amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_framework_preferred_term" value="ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_1_3_butadiene_pmol_per_mol_amean" shape="qc_1_3_butadiene_pmol_per_mol_amean_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="meta_1_3_butadiene_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_1_3_butadiene_ng_per_m3_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_1-3-butadiene_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="qc_1_3_butadiene_ng_per_m3_ExpUnc2s meta_1_3_butadiene_ng_per_m3_ExpUnc2s" />
    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2024-06-06T08:13:57.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="automatically generated by a script from Empa" />
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    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on export from EBAS from 'pmol/mol' to 'ng/m3' at 273.15 K, 1013.25 hPa, conversion factor 3.485." />
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  <variable name="meta_benzene_ng_per_m3_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="actris_variable_preferred_term" value="methyl ethyl ketone amount fraction" />
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  <variable name="meta_butanone_pmol_per_mol_precision" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethanolamountfraction" />
    <attribute name="actris_variable_preferred_term" value="ethanol amount fraction" />
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  <variable name="meta_ethanol_nmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_ethanol_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_ethanol_ug_per_m3_amean meta_ethanol_ug_per_m3_amean" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2024-06-06T08:13:57.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="automatically generated by a script from Empa" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
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    <attribute name="ebas_platform_code" value="CH0010S" />
    <attribute name="ebas_station_name" value="Zürich-Kaserne" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="47.377586" />
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    <attribute name="ebas_measurement_altitude" value="502.5 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
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    <attribute name="ebas_component" value="ethanol" />
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    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
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    <attribute name="ebas_calibration_standard_id" value="D95441" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
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    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.0020554. Detection limit converted from '8.0 pmol/mol' to '0.01644 ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.0020554." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethanolmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="ethanol mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_framework_preferred_term" value="ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_ethanol_ug_per_m3_amean" shape="qc_ethanol_ug_per_m3_amean_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
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    <attribute name="standard_name" value="status_flag" />
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  <variable name="meta_ethanol_ug_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ethanol_nmol_per_mol_ExpUnc2s" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_ethanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
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    <attribute name="cell_methods" value="time: expanded uncertainty 2sigma" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_statistics" value="expanded uncertainty 2sigma" />
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    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00205539. -- Data converted on export from EBAS from 'ug/m3' at 273.15 K, 1013.25 hPa to 'nmol/mol', conversion factor 0.48652616." />
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    <attribute name="actris_variable_preferred_term" value="ethanol amount fraction" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ethanol_in_air" />
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    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
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    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018). -- Data converted on import into EBAS from 'pmol/mol' to 'ug/m3' at 273.15 K, 1013.25 hPa, conversion factor 0.00205539." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ethanolmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="ethanol mass concentration" />
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    <attribute name="ebas_version_description" value="automatically generated by a script from Empa" />
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    <attribute name="ebas_version_description" value="automatically generated by a script from Empa" />
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    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
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    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="actris_variable_preferred_term" value="isoprene mass concentration" />
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    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="ebas_version_description" value="automatically generated by a script from Empa" />
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    <attribute name="ebas_station_wmo_region" type="long" value="6" />
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    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
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  <variable name="meta_isoprene_pmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methanolamountfraction" />
    <attribute name="actris_variable_preferred_term" value="methanol amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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  <variable name="qc_methanol_amean" shape="qc_methanol_amean_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_methanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_version_description" value="automatically generated by a script from Empa" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
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    <attribute name="ebas_component" value="methanol" />
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    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
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    <attribute name="ebas_instrument_serial_number" value="cn24502278" />
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    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/methanolamountfraction" />
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    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_methanol_ExpUnc2s" shape="qc_methanol_ExpUnc2s_flags time" type="int">
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  <variable name="meta_methanol_ExpUnc2s" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_methanol_precision" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_methanol_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pmol/mol" />
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    <attribute name="ebas_version_description" value="automatically generated by a script from Empa" />
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    <attribute name="ebas_station_wmo_region" type="long" value="6" />
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    <attribute name="ebas_component" value="methanol" />
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    <attribute name="ebas_instrument_name" value="Agilent_MARKES-GC-FID_cn24502278_ZUE" />
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    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_n-butane_in_air" />
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    <attribute name="ebas_version_description" value="automatically generated by a script from Empa" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="n-butane" />
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    <attribute name="ebas_version_description" value="automatically generated by a script from Empa" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="ambient air is brought into the cabin through a main inlet line at a flow rate of 300 lpm. From the main inlet line short stainless steel tubes are used to bring the air samples to the instruments." />
    <attribute name="ebas_detection_limit_expl" value="Determined by integration of a baseline signal multiplied by a factor of 3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Includes reproducibility (precision) + systematic errors (accuracy)" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS" />
    <attribute name="ebas_framework_name" value="Sustainable Access to Atmospheric Research Facilities, European Monitoring and Evaluation Programme, World Data Centre for Reactive Gases, RI-URBANS" />
    <attribute name="ebas_framework_description" value="&quot;ATMO-ACCESS is the organized response of distributed atmospheric research facilities for developing a pilot for a new model of Integrating Activities. The project will deliver a series of recommendations for establishing a comprehensive and sustainable framework for access to distributed atmospheric Research Infrastructures (RI), ensuring integrated access to and optimised use of the services they provide.&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., The World Data Centre for Reactive Gases is the data repository and archive for reactive gases of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme., " />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Le Bras, Zoe, zoe.lebras@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Laboratory for Air Pollution, Ueberlandstrasse 129, , 8600, Duebendorf, Switzerland&quot;, &quot;Reimann, Stefan, , , , , , , , , &quot;" />
    <attribute name="ebas_submitter" value="&quot;Le Bras, Zoe, zoe.lebras@empa.ch, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Laboratory for Air Pollution, Ueberlandstrasse 129, , 8600, Duebendorf, Switzerland&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="For OVOCs, terpenes and acetoniotril the calibration factor is calculated with the effective carbon number (https://doi.org/10.1093/chromsci/23.8.333). These factors were verified in the round robin test in Hohenpeissenberg (2018)." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/tolueneamountfraction" />
    <attribute name="actris_variable_preferred_term" value="toluene amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gaschromatograph-online" />
    <attribute name="actris_instrument_type_preferred_term" value="gas chromatograph, online" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ATMO-ACCESS, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCRG, https://vocabulary.actris.nilu.no/actris_controlled_lists/RI-URBANS" />
    <attribute name="actris_framework_preferred_term" value="ATMO-ACCESS, EMEP, GAW-WDCRG, RI-URBANS" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_toluene_pmol_per_mol_precision" shape="qc_toluene_pmol_per_mol_precision_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="meta_toluene_pmol_per_mol_precision" 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 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <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 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
</netcdf>
