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<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 aerosol_mass_spectrometer at Villeneuve d'Ascq (FR0027U)" />
  <attribute name="keywords" value="chloride, nitrate, FR0027U, ammonium, organic_mass, ACTRIS, mass_concentration_of_organic_mass_in_non_refractory_pm1_in_air, mass_concentration_of_ammonium_in_non_refractory_pm1_in_air, mass_concentration_of_nitrate_in_non_refractory_pm1_in_air, pm1_non_refractory, mass_concentration_of_sulphate_total_in_non_refractory_pm1_in_air, Villeneuve d'Ascq, sulphate_total, mass_concentration_of_chloride_in_non_refractory_pm1_in_air, COLOSSAL" />
  <attribute name="id" value="H24V-RDHC.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="ACTRIS, COLOSSAL" />
  <attribute name="acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
  <attribute name="doi" value="https://doi.org/10.48597/H24V-RDHC" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Véronique Riffault, Véronique Riffault, Véronique Riffault, Véronique Riffault, Véronique Riffault, ammonium, chloride, nitrate, organic_mass, sulphate_total - aerosol_mass_spectrometer at Villeneuve d'Ascq, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/H24V-RDHC" />
  <attribute name="summary" value="Ground based in situ observations of aerosol_mass_spectrometer at Villeneuve d'Ascq (FR0027U). These measurements are gathered as a part of the following projects ACTRIS, COLOSSAL and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ammonium in pm1_non_refractory (mass_concentration_of_ammonium_in_non_refractory_pm1_in_air), ammonium in pm1_non_refractory (mass_concentration_of_ammonium_in_non_refractory_pm1_in_air), ammonium in pm1_non_refractory (mass_concentration_of_ammonium_in_non_refractory_pm1_in_air), ammonium in pm1_non_refractory (mass_concentration_of_ammonium_in_non_refractory_pm1_in_air), chloride in pm1_non_refractory (mass_concentration_of_chloride_in_non_refractory_pm1_in_air), chloride in pm1_non_refractory (mass_concentration_of_chloride_in_non_refractory_pm1_in_air), nitrate in pm1_non_refractory (mass_concentration_of_nitrate_in_non_refractory_pm1_in_air), nitrate in pm1_non_refractory (mass_concentration_of_nitrate_in_non_refractory_pm1_in_air), nitrate in pm1_non_refractory (mass_concentration_of_nitrate_in_non_refractory_pm1_in_air), nitrate in pm1_non_refractory (mass_concentration_of_nitrate_in_non_refractory_pm1_in_air), organic_mass in pm1_non_refractory (mass_concentration_of_organic_mass_in_non_refractory_pm1_in_air), organic_mass in pm1_non_refractory (mass_concentration_of_organic_mass_in_non_refractory_pm1_in_air), sulphate_total in pm1_non_refractory (mass_concentration_of_sulphate_total_in_non_refractory_pm1_in_air), sulphate_total in pm1_non_refractory (mass_concentration_of_sulphate_total_in_non_refractory_pm1_in_air), sulphate_total in pm1_non_refractory (mass_concentration_of_sulphate_total_in_non_refractory_pm1_in_air), sulphate_total in pm1_non_refractory (mass_concentration_of_sulphate_total_in_non_refractory_pm1_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2020-10-09T11:35:15 UTC" />
  <attribute name="date_metadata_modified" value="2020-10-09T11:35:15 UTC" />
  <attribute name="creator_name" value="Véronique Riffault, Véronique Riffault, Véronique Riffault, Véronique Riffault, Véronique Riffault" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value=", , , , " />
  <attribute name="creator_institution" value="&quot;Département Sciences de lAtmosphère et Génie de lEnvironnement, SAGE&quot;, &quot;Département Sciences de lAtmosphère et Génie de lEnvironnement, SAGE&quot;, &quot;Département Sciences de lAtmosphère et Génie de lEnvironnement, SAGE&quot;, &quot;Département Sciences de lAtmosphère et Génie de lEnvironnement, SAGE&quot;, &quot;Département Sciences de lAtmosphère et Génie de lEnvironnement, SAGE&quot;" />
  <attribute name="contributor_name" value="Nicolas PASCAL, Véronique Riffault, Nicolas PASCAL, Véronique Riffault, Nicolas PASCAL, Véronique Riffault, Nicolas PASCAL, Véronique Riffault, Nicolas PASCAL, Véronique Riffault" />
  <attribute name="contributor_role" value="data submitter, data submitter, data submitter, data submitter, data submitter, data submitter, data submitter, data submitter, data submitter, 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="2016-10-11T00:00:00 UTC" />
  <attribute name="time_coverage_end" value="2020-01-01T00:00:00 UTC" />
  <attribute name="time_coverage_duration" value="P0003-02-21T00:00:00" />
  <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="Véronique Riffault, Véronique Riffault, Véronique Riffault, Véronique Riffault, Véronique Riffault, ammonium, chloride, nitrate, organic_mass, sulphate_total - aerosol_mass_spectrometer at Villeneuve d'Ascq, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/H24V-RDHC" />
  <attribute name="ebas_set_type_code" value="TI" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="H24V-RDHC.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/H24V-RDHC" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/H24V-RDHC" />
  <attribute name="ebas_file_creation" value="2023-12-13T06:23:33.523291 UTC" />
  <attribute name="ebas_export_state" value="2020-10-09T11:35:15.860000 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="20161011000000" />
  <attribute name="ebas_revision_date" value="20201009113515" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="3y" />
  <attribute name="ebas_resolution_code" value="1h" />
  <attribute name="ebas_orig_time_res" value="30mn" />
  <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="20.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_matrix" value="pm1_non_refractory" />
  <attribute name="ebas_laboratory_code" value="FR07L" />
  <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
  <attribute name="ebas_instrument_name" value="Aerodyne_Q-ACSM_140-157" />
  <attribute name="ebas_instrument_manufacturer" value="Aerodyne" />
  <attribute name="ebas_instrument_model" value="Q-ACSM" />
  <attribute name="ebas_instrument_serial_number" value="140-157" />
  <attribute name="ebas_method_ref" value="FR07L_Ng_2011" />
  <attribute name="ebas_standard_method" value="Ref=Ng_2011" />
  <attribute name="ebas_inlet_type" value="Cyclone" />
  <attribute name="ebas_inlet_description" value="Inlet cutpoint=PM2.5; Comment=" />
  <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
  <attribute name="ebas_volume_std_temperature" value="273.15 K" />
  <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
  <attribute name="ebas_measurement_uncertainty_expl" value="Uncertainties calculated using  based on the method of Allan et al. (2003), DOI 10.1029/2002JD002358." />
  <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
  <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
  <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
  <attribute name="ebas_framework_acronym" value="ACTRIS, COLOSSAL" />
  <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
  <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources." />
  <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
  <attribute name="ebas_framework_contact_email" value="clm@nilu.no, waa@nilu.no" />
  <attribute name="ebas_originator" value="Riffault, Véronique, , Département Sciences de lAtmosphère et Génie de lEnvironnement, SAGE, , , Mines Douai, , Douai, France" />
  <attribute name="ebas_submitter" value="Riffault, Véronique, , Département Sciences de lAtmosphère et Génie de lEnvironnement, SAGE, , , Mines Douai, , Douai, France" />
  <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
  <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;Véronique Riffault, Véronique Riffault, Véronique Riffault, Véronique Riffault, Véronique Riffault, ammonium, chloride, nitrate, organic_mass, sulphate_total - aerosol_mass_spectrometer at Villeneuve d'Ascq, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/H24V-RDHC&quot;,&#xA;    &quot;Set type code&quot;: &quot;TI&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;H24V-RDHC.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/H24V-RDHC&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/H24V-RDHC&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-12-13T06:23:33.523291 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2020-10-09T11:35:15.860000 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20161011000000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20201009113515&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;File generated with EETA v2.6. Initial version, manually inspected.&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;3y&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1h&quot;,&#xA;    &quot;Orig. time res.&quot;: &quot;30mn&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;20.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Matrix&quot;: &quot;pm1_non_refractory&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;FR07L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;aerosol_mass_spectrometer&quot;,&#xA;    &quot;Instrument name&quot;: &quot;Aerodyne_Q-ACSM_140-157&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;Aerodyne&quot;,&#xA;    &quot;Instrument model&quot;: &quot;Q-ACSM&quot;,&#xA;    &quot;Instrument serial number&quot;: &quot;140-157&quot;,&#xA;    &quot;Method ref&quot;: &quot;FR07L_Ng_2011&quot;,&#xA;    &quot;Standard method&quot;: &quot;Ref=Ng_2011&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Cyclone&quot;,&#xA;    &quot;Inlet description&quot;: &quot;Inlet cutpoint=PM2.5; Comment=&quot;,&#xA;    &quot;Humidity/temperature control&quot;: &quot;Nafion dryer&quot;,&#xA;    &quot;Volume std. temperature&quot;: &quot;273.15 K&quot;,&#xA;    &quot;Volume std. pressure&quot;: &quot;1013.25 hPa&quot;,&#xA;    &quot;Measurement uncertainty expl.&quot;: &quot;Uncertainties calculated using  based on the method of Allan et al. (2003), DOI 10.1029/2002JD002358.&quot;,&#xA;    &quot;Zero/negative values code&quot;: &quot;Zero/negative possible&quot;,&#xA;    &quot;Zero/negative values&quot;: &quot;Zero and neg. values may appear due to statistical variations at very low concentrations&quot;,&#xA;    &quot;Organization&quot;: &quot;FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;ACTRIS, COLOSSAL&quot;,&#xA;    &quot;Framework name&quot;: &quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL&quot;,&#xA;    &quot;Framework description&quot;: &quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources.&quot;,&#xA;    &quot;Framework contact name&quot;: &quot;Cathrine Lund Myhre, Wenche Aas&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;clm@nilu.no, waa@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Riffault, Véronique, , Département Sciences de lAtmosphère et Génie de lEnvironnement, SAGE, , , Mines Douai, , Douai, France&quot;,&#xA;    &quot;Submitter&quot;: &quot;Riffault, Véronique, , Département Sciences de lAtmosphère et Génie de lEnvironnement, SAGE, , , Mines Douai, , Douai, France&quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS.&quot;&#xA;}" />
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  <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="22632" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="5" />
  <dimension name="ammonium_ug_N_per_m3_amean_qc_flags" length="1" />
  <dimension name="ammonium_ug_per_m3_amean_qc_flags" length="1" />
  <dimension name="ammonium_ug_N_per_m3_uncertainty_qc_flags" length="1" />
  <dimension name="ammonium_ug_per_m3_uncertainty_qc_flags" length="1" />
  <dimension name="chloride_amean_qc_flags" length="1" />
  <dimension name="chloride_uncertainty_qc_flags" length="1" />
  <dimension name="nitrate_ug_N_per_m3_amean_qc_flags" length="1" />
  <dimension name="nitrate_ug_per_m3_amean_qc_flags" length="1" />
  <dimension name="nitrate_ug_N_per_m3_uncertainty_qc_flags" length="1" />
  <dimension name="nitrate_ug_per_m3_uncertainty_qc_flags" length="1" />
  <dimension name="organic_mass_amean_0_qc_flags" length="1" />
  <dimension name="organic_mass_amean_1_qc_flags" length="1" />
  <dimension name="organic_mass_amean_2_qc_flags" length="1" />
  <dimension name="organic_mass_amean_3_qc_flags" length="1" />
  <dimension name="organic_mass_uncertainty_0_qc_flags" length="1" />
  <dimension name="organic_mass_uncertainty_1_qc_flags" length="1" />
  <dimension name="organic_mass_uncertainty_2_qc_flags" length="1" />
  <dimension name="organic_mass_uncertainty_3_qc_flags" length="1" />
  <dimension name="sulphate_total_ug_S_per_m3_amean_qc_flags" length="1" />
  <dimension name="sulphate_total_ug_per_m3_amean_qc_flags" length="1" />
  <dimension name="sulphate_total_ug_S_per_m3_uncertainty_qc_flags" length="1" />
  <dimension name="sulphate_total_ug_per_m3_uncertainty_qc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2016-10-11T00:30:00Z" />
    <attribute name="time_coverage_end" value="2019-12-31T23:30:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="4493.0" />
    <attribute name="time_coverage_duration" value="P0Y0M1176DT23H0M0.000S" />
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  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-05-18" />
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  </variable>
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    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ammonium_in_non_refractory_pm1_in_air" />
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    <attribute name="units" value="ug N/m3" />
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    <attribute name="cell_methods" value="time: mean" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
    <attribute name="ebas_station_code" value="FR0027U" />
    <attribute name="ebas_platform_code" value="FR0027S" />
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    <attribute name="ebas_station_land_use" value="Other" />
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    <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="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ammonium" />
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    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
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    <attribute name="ebas_instrument_model" value="Q-ACSM" />
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    <attribute name="ebas_standard_method" value="Ref=Ng_2011" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="Inlet cutpoint=PM2.5; Comment=" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <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_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, COLOSSAL" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, waa@nilu.no" />
    <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
  </variable>
  <variable name="ammonium_ug_N_per_m3_amean_qc" shape="ammonium_ug_N_per_m3_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="ammonium_ug_N_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ammonium_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ammonium_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="ammonium_ug_per_m3_amean_qc ammonium_ug_per_m3_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="20201009113515" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
    <attribute name="ebas_station_code" value="FR0027U" />
    <attribute name="ebas_platform_code" value="FR0027S" />
    <attribute name="ebas_station_name" value="Villeneuve d'Ascq" />
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    <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="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ammonium" />
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    <attribute name="ebas_matrix" value="pm1_non_refractory" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
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    <attribute name="ebas_instrument_model" value="Q-ACSM" />
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    <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_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, COLOSSAL" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, waa@nilu.no" />
    <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
    <attribute name="ebas_comment" value="Data converted on export from EBAS from 'ug N/m3' to 'ug/m3', conversion factor 1.2879." />
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  <variable name="ammonium_ug_per_m3_amean_qc" shape="ammonium_ug_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="ammonium_ug_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ammonium_ug_N_per_m3_uncertainty" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ammonium_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug N/m3" />
    <attribute name="ancillary_variables" value="ammonium_ug N_per_m3_uncertainty_qc ammonium_ug N_per_m3_uncertainty_ebasmetadata" />
    <attribute name="cell_methods" value="time: uncertainty" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
    <attribute name="ebas_statistics" value="uncertainty" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
    <attribute name="ebas_station_code" value="FR0027U" />
    <attribute name="ebas_platform_code" value="FR0027S" />
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    <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="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ammonium" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="pm1_non_refractory" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
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    <attribute name="ebas_instrument_model" value="Q-ACSM" />
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    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
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    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
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    <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
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    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="units" value="1" />
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  <variable name="ammonium_ug_N_per_m3_uncertainty_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="ammonium_ug_per_m3_uncertainty" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ammonium_in_non_refractory_pm1_in_air" />
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    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="ammonium_ug_per_m3_uncertainty_qc ammonium_ug_per_m3_uncertainty_ebasmetadata" />
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    <attribute name="ebas_station_setting" value="Suburban" />
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    <attribute name="ebas_station_latitude" value="50.611017" />
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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_chloride_in_non_refractory_pm1_in_air" />
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    <attribute name="ebas_station_latitude" value="50.611017" />
    <attribute name="ebas_station_longitude" value="3.14035" />
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    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_laboratory_code" value="FR07L" />
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    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
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    <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
  </variable>
  <variable name="chloride_amean_qc" shape="chloride_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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  <variable name="chloride_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="chloride_uncertainty" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_chloride_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
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    <attribute name="ebas_station_code" value="FR0027U" />
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    <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="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="chloride" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm1_non_refractory" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
    <attribute name="ebas_instrument_name" value="Aerodyne_Q-ACSM_140-157" />
    <attribute name="ebas_instrument_manufacturer" value="Aerodyne" />
    <attribute name="ebas_instrument_model" value="Q-ACSM" />
    <attribute name="ebas_instrument_serial_number" value="140-157" />
    <attribute name="ebas_method_ref" value="FR07L_Ng_2011" />
    <attribute name="ebas_standard_method" value="Ref=Ng_2011" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
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    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <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_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, COLOSSAL" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, waa@nilu.no" />
    <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
  </variable>
  <variable name="chloride_uncertainty_qc" shape="chloride_uncertainty_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="chloride_uncertainty_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="nitrate_ug_N_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nitrate_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug N/m3" />
    <attribute name="ancillary_variables" value="nitrate_ug N_per_m3_amean_qc nitrate_ug N_per_m3_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="20201009113515" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
    <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="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrate" />
    <attribute name="ebas_unit" value="ug N/m3" />
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    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
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    <attribute name="ebas_instrument_manufacturer" value="Aerodyne" />
    <attribute name="ebas_instrument_model" value="Q-ACSM" />
    <attribute name="ebas_instrument_serial_number" value="140-157" />
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    <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_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
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    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
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    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, waa@nilu.no" />
    <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
  </variable>
  <variable name="nitrate_ug_N_per_m3_amean_qc" shape="nitrate_ug_N_per_m3_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="nitrate_ug_N_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="nitrate_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nitrate_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="nitrate_ug_per_m3_amean_qc nitrate_ug_per_m3_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="20201009113515" />
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    <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
    <attribute name="ebas_station_code" value="FR0027U" />
    <attribute name="ebas_platform_code" value="FR0027S" />
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    <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="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrate" />
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    <attribute name="ebas_matrix" value="pm1_non_refractory" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
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    <attribute name="ebas_instrument_model" value="Q-ACSM" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
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  <variable name="nitrate_ug_per_m3_amean_qc" shape="nitrate_ug_per_m3_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="nitrate_ug_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="nitrate_ug_N_per_m3_uncertainty" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nitrate_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug N/m3" />
    <attribute name="ancillary_variables" value="nitrate_ug N_per_m3_uncertainty_qc nitrate_ug N_per_m3_uncertainty_ebasmetadata" />
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    <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" />
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    <attribute name="ebas_regime" value="IMG" />
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  <variable name="nitrate_ug_N_per_m3_uncertainty_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="nitrate_ug_per_m3_uncertainty" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="ebas_regime" value="IMG" />
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  </variable>
  <variable name="nitrate_ug_per_m3_uncertainty_qc" shape="nitrate_ug_per_m3_uncertainty_qc_flags time" type="int">
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  </variable>
  <variable name="nitrate_ug_per_m3_uncertainty_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="organic_mass_amean_0" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_mass_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="organic_mass_amean_0_qc organic_mass_amean_0_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="20201009113515" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
    <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="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_mass" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm1_non_refractory" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
    <attribute name="ebas_instrument_name" value="Aerodyne_Q-ACSM_140-157" />
    <attribute name="ebas_instrument_manufacturer" value="Aerodyne" />
    <attribute name="ebas_instrument_model" value="Q-ACSM" />
    <attribute name="ebas_instrument_serial_number" value="140-157" />
    <attribute name="ebas_method_ref" value="FR07L_Ng_2011" />
    <attribute name="ebas_standard_method" value="Ref=Ng_2011" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="Inlet cutpoint=PM2.5; Comment=" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Uncertainties calculated using  based on the method of Allan et al. (2003), DOI 10.1029/2002JD002358." />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, COLOSSAL" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, waa@nilu.no" />
    <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
  </variable>
  <variable name="organic_mass_amean_0_qc" shape="organic_mass_amean_0_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="organic_mass_amean_0_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="organic_mass_amean_1" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_mass_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="organic_mass_amean_1_qc organic_mass_amean_1_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="20201009113515" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
    <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="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_mass" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm1_non_refractory" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
    <attribute name="ebas_instrument_name" value="Aerodyne_Q-ACSM_140-157" />
    <attribute name="ebas_instrument_manufacturer" value="Aerodyne" />
    <attribute name="ebas_instrument_model" value="Q-ACSM" />
    <attribute name="ebas_instrument_serial_number" value="140-157" />
    <attribute name="ebas_method_ref" value="FR07L_Ng_2011" />
    <attribute name="ebas_standard_method" value="Ref=Ng_2011" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="Inlet cutpoint=PM2.5; Comment=" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Uncertainties calculated using  based on the method of Allan et al. (2003), DOI 10.1029/2002JD002358." />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, COLOSSAL" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, waa@nilu.no" />
    <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
  </variable>
  <variable name="organic_mass_amean_1_qc" shape="organic_mass_amean_1_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="organic_mass_amean_1_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="organic_mass_amean_2" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_mass_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="organic_mass_amean_2_qc organic_mass_amean_2_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="20201009113515" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
    <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="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_mass" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm1_non_refractory" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
    <attribute name="ebas_instrument_name" value="Aerodyne_Q-ACSM_140-157" />
    <attribute name="ebas_instrument_manufacturer" value="Aerodyne" />
    <attribute name="ebas_instrument_model" value="Q-ACSM" />
    <attribute name="ebas_instrument_serial_number" value="140-157" />
    <attribute name="ebas_method_ref" value="FR07L_Ng_2011" />
    <attribute name="ebas_standard_method" value="Ref=Ng_2011" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
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    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
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  </variable>
  <variable name="organic_mass_amean_2_qc" shape="organic_mass_amean_2_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="organic_mass_amean_2_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="organic_mass_amean_3" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_mass_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="organic_mass_amean_3_qc organic_mass_amean_3_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="20201009113515" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
    <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="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_mass" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm1_non_refractory" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
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    <attribute name="ebas_instrument_model" value="Q-ACSM" />
    <attribute name="ebas_instrument_serial_number" value="140-157" />
    <attribute name="ebas_method_ref" value="FR07L_Ng_2011" />
    <attribute name="ebas_standard_method" value="Ref=Ng_2011" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
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    <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
  </variable>
  <variable name="organic_mass_amean_3_qc" shape="organic_mass_amean_3_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="organic_mass_amean_3_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="organic_mass_uncertainty_0" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_mass_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="organic_mass_uncertainty_0_qc organic_mass_uncertainty_0_ebasmetadata" />
    <attribute name="cell_methods" value="time: uncertainty" />
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    <attribute name="ebas_revision_date" value="20201009113515" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
    <attribute name="ebas_station_code" value="FR0027U" />
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    <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="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_mass" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm1_non_refractory" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
    <attribute name="ebas_instrument_name" value="Aerodyne_Q-ACSM_140-157" />
    <attribute name="ebas_instrument_manufacturer" value="Aerodyne" />
    <attribute name="ebas_instrument_model" value="Q-ACSM" />
    <attribute name="ebas_instrument_serial_number" value="140-157" />
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    <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_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, waa@nilu.no" />
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  </variable>
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    <attribute name="units" value="1" />
  </variable>
  <variable name="organic_mass_uncertainty_0_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="organic_mass_uncertainty_1" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_mass_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="organic_mass_uncertainty_1_qc organic_mass_uncertainty_1_ebasmetadata" />
    <attribute name="cell_methods" value="time: uncertainty" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20201009113515" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
    <attribute name="ebas_statistics" value="uncertainty" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
    <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" />
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    <attribute name="ebas_measurement_height" value="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_mass" />
    <attribute name="ebas_unit" value="ug/m3" />
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    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
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    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
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    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
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  </variable>
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    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="organic_mass_uncertainty_1_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="organic_mass_uncertainty_2" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_mass_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="organic_mass_uncertainty_2_qc organic_mass_uncertainty_2_ebasmetadata" />
    <attribute name="cell_methods" value="time: uncertainty" />
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    <attribute name="ebas_revision_date" value="20201009113515" />
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    <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
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    <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" />
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    <attribute name="ebas_measurement_height" value="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_mass" />
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    <attribute name="ebas_matrix" value="pm1_non_refractory" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
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    <attribute name="units" value="1" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="organic_mass_uncertainty_3" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_mass_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="organic_mass_uncertainty_3_qc organic_mass_uncertainty_3_ebasmetadata" />
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    <attribute name="ebas_station_setting" value="Suburban" />
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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="units" value="ug S/m3" />
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  <variable name="sulphate_total_ug_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="ebas_station_longitude" value="3.14035" />
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    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="Inlet cutpoint=PM2.5; Comment=" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Uncertainties calculated using  based on the method of Allan et al. (2003), DOI 10.1029/2002JD002358." />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, COLOSSAL" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, waa@nilu.no" />
    <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
    <attribute name="ebas_comment" value="Data converted on export from EBAS from 'ug S/m3' to 'ug/m3', conversion factor 2.9962." />
  </variable>
  <variable name="sulphate_total_ug_per_m3_amean_qc" shape="sulphate_total_ug_per_m3_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="sulphate_total_ug_per_m3_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="sulphate_total_ug_S_per_m3_uncertainty" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_sulphate_total_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug S/m3" />
    <attribute name="ancillary_variables" value="sulphate_total_ug S_per_m3_uncertainty_qc sulphate_total_ug S_per_m3_uncertainty_ebasmetadata" />
    <attribute name="cell_methods" value="time: uncertainty" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20201009113515" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
    <attribute name="ebas_statistics" value="uncertainty" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
    <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="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="sulphate_total" />
    <attribute name="ebas_unit" value="ug S/m3" />
    <attribute name="ebas_matrix" value="pm1_non_refractory" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
    <attribute name="ebas_instrument_name" value="Aerodyne_Q-ACSM_140-157" />
    <attribute name="ebas_instrument_manufacturer" value="Aerodyne" />
    <attribute name="ebas_instrument_model" value="Q-ACSM" />
    <attribute name="ebas_instrument_serial_number" value="140-157" />
    <attribute name="ebas_method_ref" value="FR07L_Ng_2011" />
    <attribute name="ebas_standard_method" value="Ref=Ng_2011" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="Inlet cutpoint=PM2.5; Comment=" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Uncertainties calculated using  based on the method of Allan et al. (2003), DOI 10.1029/2002JD002358." />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, COLOSSAL" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, waa@nilu.no" />
    <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
  </variable>
  <variable name="sulphate_total_ug_S_per_m3_uncertainty_qc" shape="sulphate_total_ug_S_per_m3_uncertainty_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="sulphate_total_ug_S_per_m3_uncertainty_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="sulphate_total_ug_per_m3_uncertainty" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_sulphate_total_in_non_refractory_pm1_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="sulphate_total_ug_per_m3_uncertainty_qc sulphate_total_ug_per_m3_uncertainty_ebasmetadata" />
    <attribute name="cell_methods" value="time: uncertainty" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20201009113515" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="File generated with EETA v2.6. Initial version, manually inspected." />
    <attribute name="ebas_statistics" value="uncertainty" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_orig_time_res" value="30mn" />
    <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="20.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="sulphate_total" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm1_non_refractory" />
    <attribute name="ebas_laboratory_code" value="FR07L" />
    <attribute name="ebas_instrument_type" value="aerosol_mass_spectrometer" />
    <attribute name="ebas_instrument_name" value="Aerodyne_Q-ACSM_140-157" />
    <attribute name="ebas_instrument_manufacturer" value="Aerodyne" />
    <attribute name="ebas_instrument_model" value="Q-ACSM" />
    <attribute name="ebas_instrument_serial_number" value="140-157" />
    <attribute name="ebas_method_ref" value="FR07L_Ng_2011" />
    <attribute name="ebas_standard_method" value="Ref=Ng_2011" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="Inlet cutpoint=PM2.5; Comment=" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Uncertainties calculated using  based on the method of Allan et al. (2003), DOI 10.1029/2002JD002358." />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR07L, Institut Mines Telecom Lille Douai, IMT Lille Douai, SAGE department, 941 rue Charles Bourseul, CS 10838, 59508, Douai, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, COLOSSAL" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, waa@nilu.no" />
    <attribute name="ebas_acknowledgement" value="EETA (EBAS Export Tool for ACSM/AMS) development was supported by ACTRIS. Request acknowledgement details from data originator. The EETA export tool was developed with support from ACTRIS." />
    <attribute name="ebas_comment" value="Data converted on export from EBAS from 'ug S/m3' to 'ug/m3', conversion factor 2.9962." />
  </variable>
  <variable name="sulphate_total_ug_per_m3_uncertainty_qc" shape="sulphate_total_ug_per_m3_uncertainty_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="sulphate_total_ug_per_m3_uncertainty_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>
