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  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Inorganics in air and particle phase at Vielsalm" />
  <attribute name="summary" value="Inorganics in air and particle phase at Vielsalm. These measurements are gathered as a part of the following projects CAMP, EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['ammonia in air (mass_concentration_of_ammonia_expressed_as_nitrogen_in_air)', 'ammonium in aerosol (mass_concentration_of_ammonium_expressed_as_nitrogen_in_dry_aerosol_particles_in_air)', 'ammonium in aerosol (mass_concentration_of_ammonium_in_dry_aerosol_particles_in_air)', 'calcium in aerosol (mass_concentration_of_calcium_in_dry_aerosol_particles_in_air)', 'chloride in aerosol (mass_concentration_of_chloride_in_dry_aerosol_particles_in_air)', 'magnesium in aerosol (mass_concentration_of_magnesium_in_dry_aerosol_particles_in_air)', 'nitrate in aerosol (mass_concentration_of_nitrate_expressed_as_nitrogen_in_dry_aerosol_particles_in_air)', 'nitrate in aerosol (mass_concentration_of_nitrate_in_dry_aerosol_particles_in_air)', 'nitric_acid in air (mass_concentration_of_nitric_acid_expressed_as_nitrogen_in_air)', 'potassium in aerosol (mass_concentration_of_potassium_in_dry_aerosol_particles_in_air)', 'sodium in aerosol (mass_concentration_of_sodium_in_dry_aerosol_particles_in_air)', 'sulphate_corrected in aerosol (mass_concentration_of_sulphate_corrected_for_seaspray_expressed_as_sulphur_in_dry_aerosol_particles_in_air)', 'sulphate_corrected in aerosol (mass_concentration_of_sulphate_corrected_for_seaspray_in_dry_aerosol_particles_in_air)', 'sulphate_total in aerosol (mass_concentration_of_sulphate_expressed_as_sulphur_in_dry_aerosol_particles_in_air)', 'sulphate_total in aerosol (mass_concentration_of_sulphate_in_dry_aerosol_particles_in_air)', 'sulphur_dioxide in air (mass_concentration_of_sulphur_dioxide_expressed_as_sulphur_in_air)', 'sum_ammonia_and_ammonium in air+aerosol (mass_concentration_of_sum_ammonia_and_ammonium_expressed_as_nitrogen_in_gaseous_phase_and_dry_aerosol_particles_in_air)', 'sum_nitric_acid_and_nitrate in air+aerosol (mass_concentration_of_sum_nitric_acid_and_nitrate_expressed_as_nitrogen_in_gaseous_phase_and_dry_aerosol_particles_in_air)']" />
  <attribute name="keywords" value="Vielsalm BE0007R ammonia ammonium calcium chloride magnesium nitrate nitric_acid potassium sodium sulphate_corrected sulphate_total sulphur_dioxide sum_ammonia_and_ammonium sum_nitric_acid_and_nitrate air aerosol air+aerosol CAMP EMEP mass_concentration_of_ammonia_expressed_as_nitrogen_in_air mass_concentration_of_ammonium_expressed_as_nitrogen_in_dry_aerosol_particles_in_air mass_concentration_of_ammonium_in_dry_aerosol_particles_in_air mass_concentration_of_calcium_in_dry_aerosol_particles_in_air mass_concentration_of_chloride_in_dry_aerosol_particles_in_air mass_concentration_of_magnesium_in_dry_aerosol_particles_in_air mass_concentration_of_nitrate_expressed_as_nitrogen_in_dry_aerosol_particles_in_air mass_concentration_of_nitrate_in_dry_aerosol_particles_in_air mass_concentration_of_nitric_acid_expressed_as_nitrogen_in_air mass_concentration_of_potassium_in_dry_aerosol_particles_in_air mass_concentration_of_sodium_in_dry_aerosol_particles_in_air mass_concentration_of_sulphate_corrected_for_seaspray_expressed_as_sulphur_in_dry_aerosol_particles_in_air mass_concentration_of_sulphate_corrected_for_seaspray_in_dry_aerosol_particles_in_air mass_concentration_of_sulphate_expressed_as_sulphur_in_dry_aerosol_particles_in_air mass_concentration_of_sulphate_in_dry_aerosol_particles_in_air mass_concentration_of_sulphur_dioxide_expressed_as_sulphur_in_air mass_concentration_of_sum_ammonia_and_ammonium_expressed_as_nitrogen_in_gaseous_phase_and_dry_aerosol_particles_in_air mass_concentration_of_sum_nitric_acid_and_nitrate_expressed_as_nitrogen_in_gaseous_phase_and_dry_aerosol_particles_in_air" />
  <attribute name="id" value="ZGCG-Z8SB.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="CAMP, EMEP" />
  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/ZGCG-Z8SB" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Bergmans, B., Minet, I., CAMP, EMEP, 2025, Inorganics in air and particle phase at Vielsalm, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/ZGCG-Z8SB" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="BE03L &quot;Institut Scientifique de Service Public&quot; ISSeP &quot;Rue Chéra, 200&quot; 4000 Liege Belgium" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2026-06-02T12:32:29.376245Z" />
  <attribute name="date_metadata_modified" value="2025-10-07T08:37:01Z" />
  <attribute name="creator_name" value="Benjamin Bergmans, Isabelle Minet" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="b.bergmans@issep.be, i.minet@issep.be" />
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  <attribute name="contributor_name" value="Benjamin Palmaerts" />
  <attribute name="contributor_role" value="data submitter" />
  <attribute name="publisher_type" value="institution" />
  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_institution" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_email" value="ebas@nilu.no" />
  <attribute name="publisher_url" value="https://www.nilu.no/" />
  <attribute name="geospatial_bounds" value="POINT Z (6.001271 50.304003 496)" />
  <attribute name="geospatial_lat_min" type="double" value="50.304003" />
  <attribute name="geospatial_lat_max" type="double" value="50.304003" />
  <attribute name="geospatial_lon_min" type="double" value="6.001271" />
  <attribute name="geospatial_lon_max" type="double" value="6.001271" />
  <attribute name="geospatial_vertical_min" type="double" value="496.0" />
  <attribute name="geospatial_vertical_max" type="double" value="496.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="time_coverage_start" value="2023-09-02T00:00:00Z" />
  <attribute name="time_coverage_end" value="2024-01-01T00:00:00Z" />
  <attribute name="time_coverage_duration" value="P0000-03-30T00:00:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-01T00:00:00" />
  <attribute name="timezone" value="UTC" />
  <attribute name="ebas_data_definition" value="EBAS_1.1" />
  <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="ebas_citation" value="Bergmans, B., Minet, I., CAMP, EMEP, 2025, Inorganics in air and particle phase at Vielsalm, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/ZGCG-Z8SB" />
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  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/ZGCG-Z8SB" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/ZGCG-Z8SB" />
  <attribute name="ebas_file_creation" value="2026-06-14T00:16:59.853158Z" />
  <attribute name="ebas_export_state" value="2026-06-02T12:32:29.376245Z" />
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  <attribute name="ebas_startdate" value="2023-09-02T00:00:00.000000Z" />
  <attribute name="ebas_revision_date" value="2025-10-07T08:37:01.000000Z" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="revision with corrected variable order, corrected time, corrected processing of values &lt; LD" />
  <attribute name="ebas_statistics" value="arithmetic mean" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="4mo" />
  <attribute name="ebas_resolution_code" value="1d" />
  <attribute name="ebas_sample_duration" value="1d" />
  <attribute name="ebas_orig_time_res" value="1d" />
  <attribute name="ebas_station_code" value="BE0007R" />
  <attribute name="ebas_platform_code" value="BE0007S" />
  <attribute name="ebas_station_name" value="Vielsalm" />
  <attribute name="ebas_station_latitude" type="double" value="50.304003" />
  <attribute name="ebas_station_longitude" type="double" value="6.001271" />
  <attribute name="ebas_station_altitude" value="487.0 m" />
  <attribute name="ebas_measurement_altitude" value="496.0 m" />
  <attribute name="ebas_measurement_height" value="3.5 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_laboratory_code" value="BE03L" />
  <attribute name="ebas_instrument_type" value="filter_4pack" />
  <attribute name="ebas_instrument_name" value="Partisol_2300" />
  <attribute name="ebas_instrument_manufacturer" value="Thermo" />
  <attribute name="ebas_instrument_model" value="Partisol 2300" />
  <attribute name="ebas_instrument_serial_number" value="2300a203040905" />
  <attribute name="ebas_analytical_laboratory_code" value="BE03L" />
  <attribute name="ebas_analytical_measurement_technique" value="IC" />
  <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
  <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
  <attribute name="ebas_analytical_instrument_model" value="ICS-3000" />
  <attribute name="ebas_analytical_instrument_serial_number" value="08120133" />
  <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
  <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
  <attribute name="ebas_inlet_type" value="Hat or hood" />
  <attribute name="ebas_inlet_description" value="Downward facing" />
  <attribute name="ebas_flow_rate" value="10.0 l/min" />
  <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
  <attribute name="ebas_blank_correction" value="Blank corrected" />
  <attribute name="ebas_humidity_temperaure_control" value="None" />
  <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
  <attribute name="ebas_volume_std_temperature" value="ambient" />
  <attribute name="ebas_volume_std_pressure" value="ambient" />
  <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
  <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
  <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if within detection limit, flagged with 781" />
  <attribute name="ebas_organization" value="BE03L, Institut Scientifique de Service Public, ISSeP, , &quot;Rue Chéra, 200&quot;, , 4000, Liege, Belgium" />
  <attribute name="ebas_framework_acronym" value="CAMP, EMEP" />
  <attribute name="ebas_framework_name" value="OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme" />
  <attribute name="ebas_framework_description" value="The OSPARCOM Comprehensive Atmospheric Monitoring Programme goal is the assessment of the atmospheric input of selected contaminants to the OSPAR maritime area and regions., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
  <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
  <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Bergmans, Benjamin, b.bergmans@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chera 200, , 4000 Liege, Belgium&quot;, &quot;Minet, Isabelle, i.minet@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
  <attribute name="ebas_submitter" value="&quot;Palmaerts, Benjamin, b.palmaerts@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
  <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
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  <attribute name="Metadata_Conventions" value="Unidata Dataset Discovery v1.0" />
  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
  <attribute name="standard_name_vocabulary" value="CF-1.7, ACDD-1.3" />
  <attribute name="history" value="None" />
  <attribute name="creator_url" value="ebas.nilu.no" />
  <attribute name="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="time" length="121" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="qc_ammonia_flags" length="1" />
  <dimension name="qc_ammonium_ug_N_per_m3_flags" length="1" />
  <dimension name="qc_ammonium_ug_per_m3_flags" length="1" />
  <dimension name="qc_calcium_flags" length="1" />
  <dimension name="qc_chloride_flags" length="1" />
  <dimension name="qc_magnesium_flags" length="1" />
  <dimension name="qc_nitrate_ug_N_per_m3_flags" length="1" />
  <dimension name="qc_nitrate_ug_per_m3_flags" length="1" />
  <dimension name="qc_nitric_acid_flags" length="1" />
  <dimension name="qc_potassium_flags" length="1" />
  <dimension name="qc_sodium_flags" length="1" />
  <dimension name="qc_sulphate_corrected_ug_S_per_m3_flags" length="1" />
  <dimension name="qc_sulphate_corrected_ug_per_m3_flags" length="1" />
  <dimension name="qc_sulphate_total_ug_S_per_m3_flags" length="1" />
  <dimension name="qc_sulphate_total_ug_per_m3_flags" length="1" />
  <dimension name="qc_sulphur_dioxide_flags" length="1" />
  <dimension name="qc_sum_ammonia_and_ammonium_flags" length="1" />
  <dimension name="qc_sum_nitric_acid_and_nitrate_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2023-09-02T12:00:00Z" />
    <attribute name="time_coverage_end" value="2023-12-31T12:00:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="86400.0" />
    <attribute name="time_coverage_duration" value="P0Y0M120DT0H0M0.000S" />
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    <attribute name="metadata_creation" value="2026-06-26" />
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    <attribute name="long_name" value="time bounds for measurement" />
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    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
  </variable>
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    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_ammonia meta_ammonia" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_statistics" value="arithmetic mean" />
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    <attribute name="ebas_station_code" value="BE0007R" />
    <attribute name="ebas_platform_code" value="BE0007S" />
    <attribute name="ebas_station_name" value="Vielsalm" />
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    <attribute name="ebas_measurement_height" value="3.5 m" />
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    <attribute name="ebas_component" value="ammonia" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="BE03L" />
    <attribute name="ebas_instrument_type" value="filter_4pack" />
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    <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
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    <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward facing" />
    <attribute name="ebas_flow_rate" value="10.0 l/min" />
    <attribute name="ebas_medium" value="Cellulose" />
    <attribute name="ebas_coating_solution" value="Citric acid" />
    <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit" value="0.03 ug N/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
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    <attribute name="ebas_framework_acronym" value="CAMP, EMEP" />
    <attribute name="ebas_framework_name" value="OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value="The OSPARCOM Comprehensive Atmospheric Monitoring Programme goal is the assessment of the atmospheric input of selected contaminants to the OSPAR maritime area and regions., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
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    <attribute name="ebas_submitter" value="&quot;Palmaerts, Benjamin, b.palmaerts@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/ammoniamassconcentration" />
    <attribute name="actris_variable_preferred_term" value="ammonia mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedasnitrogen" />
    <attribute name="actris_constraints_preferred_term" value="expressed as nitrogen" />
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    <attribute name="actris_instrument_type_preferred_term" value="low volume filter sampler" />
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    <attribute name="actris_temporal_resolution" value="P1D" />
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    <attribute name="_FillValue" type="int" value="0" />
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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="v_ammonium_ug_N_per_m3" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ammonium_expressed_as_nitrogen_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_ammonium_ug_N_per_m3 meta_ammonium_ug_N_per_m3" />
    <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="2025-10-07T08:37:01.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="revision with corrected variable order, corrected time, corrected processing of values &lt; LD" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="BE0007R" />
    <attribute name="ebas_platform_code" value="BE0007S" />
    <attribute name="ebas_station_name" value="Vielsalm" />
    <attribute name="ebas_station_latitude" type="double" value="50.304003" />
    <attribute name="ebas_station_longitude" type="double" value="6.001271" />
    <attribute name="ebas_station_altitude" value="487.0 m" />
    <attribute name="ebas_measurement_altitude" value="496.0 m" />
    <attribute name="ebas_measurement_height" value="3.5 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="aerosol" />
    <attribute name="ebas_laboratory_code" value="BE03L" />
    <attribute name="ebas_instrument_type" value="filter_4pack" />
    <attribute name="ebas_instrument_name" value="Partisol_2300" />
    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
    <attribute name="ebas_instrument_model" value="Partisol 2300" />
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    <attribute name="ebas_analytical_measurement_technique" value="IC" />
    <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
    <attribute name="ebas_analytical_instrument_model" value="ICS-3000" />
    <attribute name="ebas_analytical_instrument_serial_number" value="08120133" />
    <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward facing" />
    <attribute name="ebas_flow_rate" value="10.0 l/min" />
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    <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
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    <attribute name="ebas_volume_std_pressure" value="ambient" />
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    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
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    <attribute name="ebas_submitter" value="&quot;Palmaerts, Benjamin, b.palmaerts@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticleammoniummassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle ammonium mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedasnitrogen" />
    <attribute name="actris_constraints_preferred_term" value="expressed as nitrogen" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
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    <attribute name="actris_instrument_type_preferred_term" value="low volume filter sampler" />
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    <attribute name="actris_framework_preferred_term" value="CAMP, EMEP" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_ammonium_ug_N_per_m3" shape="qc_ammonium_ug_N_per_m3_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_ammonium_ug_N_per_m3" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_ammonium_ug_per_m3" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_ammonium_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_ammonium_ug_per_m3 meta_ammonium_ug_per_m3" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_version_description" value="revision with corrected variable order, corrected time, corrected processing of values &lt; LD" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="BE0007R" />
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    <attribute name="ebas_component" value="ammonium" />
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    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
    <attribute name="ebas_instrument_model" value="Partisol 2300" />
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    <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
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    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
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    <attribute name="ebas_inlet_description" value="Downward facing" />
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    <attribute name="ebas_volume_std_pressure" value="ambient" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Data converted on export from EBAS from 'ug N/m3' to 'ug/m3', conversion factor 1.2879. Detection limit converted from '0.01 ug N/m3' to '0.01 ug/m3', conversion factor 1.2879." />
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    <attribute name="actris_variable_preferred_term" value="aerosol particle ammonium mass concentration" />
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  <variable name="qc_ammonium_ug_per_m3" shape="qc_ammonium_ug_per_m3_flags time" type="int">
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_calcium" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_calcium_in_dry_aerosol_particles_in_air" />
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    <attribute name="ancillary_variables" value="qc_calcium meta_calcium" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_version_description" value="revision with corrected variable order, corrected time, corrected processing of values &lt; LD" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="BE0007R" />
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    <attribute name="ebas_station_latitude" type="double" value="50.304003" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="calcium" />
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    <attribute name="ebas_matrix" value="aerosol" />
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    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
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    <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlecalciummassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle calcium mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
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  <variable name="qc_calcium" shape="qc_calcium_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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  </variable>
  <variable name="meta_calcium" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_chloride" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_chloride_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_chloride meta_chloride" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_version_description" value="revision with corrected variable order, corrected time, corrected processing of values &lt; LD" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="BE0007R" />
    <attribute name="ebas_platform_code" value="BE0007S" />
    <attribute name="ebas_station_name" value="Vielsalm" />
    <attribute name="ebas_station_latitude" type="double" value="50.304003" />
    <attribute name="ebas_station_longitude" type="double" value="6.001271" />
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    <attribute name="ebas_measurement_height" value="3.5 m" />
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    <attribute name="ebas_component" value="chloride" />
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    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
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    <attribute name="ebas_analytical_instrument_model" value="ICS-3000" />
    <attribute name="ebas_analytical_instrument_serial_number" value="08120133" />
    <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
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    <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlechloridemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle chloride mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
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    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_chloride" shape="qc_chloride_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_chloride" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_magnesium" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_magnesium_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_magnesium meta_magnesium" />
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    <attribute name="ebas_revision_date" value="2025-10-07T08:37:01.000000Z" />
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    <attribute name="ebas_version_description" value="revision with corrected variable order, corrected time, corrected processing of values &lt; LD" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="BE0007R" />
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    <attribute name="ebas_component" value="magnesium" />
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    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="BE03L" />
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    <attribute name="ebas_instrument_name" value="Partisol_2300" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlemagnesiummassconcentration" />
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    <attribute name="ebas_component" value="nitrate" />
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    <attribute name="actris_variable_preferred_term" value="aerosol particle nitrate mass concentration" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_nitrate_ug_per_m3" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="ebas_orig_time_res" value="1d" />
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    <attribute name="ebas_analytical_instrument_model" value="ICS-3000" />
    <attribute name="ebas_analytical_instrument_serial_number" value="08120133" />
    <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward facing" />
    <attribute name="ebas_flow_rate" value="10.0 l/min" />
    <attribute name="ebas_medium" value="Teflon" />
    <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit" value="0.04 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if within detection limit, flagged with 781" />
    <attribute name="ebas_organization" value="BE03L, Institut Scientifique de Service Public, ISSeP, , &quot;Rue Chéra, 200&quot;, , 4000, Liege, Belgium" />
    <attribute name="ebas_framework_acronym" value="CAMP, EMEP" />
    <attribute name="ebas_framework_name" value="OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value="The OSPARCOM Comprehensive Atmospheric Monitoring Programme goal is the assessment of the atmospheric input of selected contaminants to the OSPAR maritime area and regions., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Bergmans, Benjamin, b.bergmans@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chera 200, , 4000 Liege, Belgium&quot;, &quot;Minet, Isabelle, i.minet@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_submitter" value="&quot;Palmaerts, Benjamin, b.palmaerts@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Data converted on export from EBAS from 'ug N/m3' to 'ug/m3', conversion factor 4.4267. Detection limit converted from '0.01 ug N/m3' to '0.04 ug/m3', conversion factor 4.4267." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlenitratemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle nitrate mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/lowvolumefiltersampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume filter sampler" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/CAMP, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP" />
    <attribute name="actris_framework_preferred_term" value="CAMP, EMEP" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_nitrate_ug_per_m3" shape="qc_nitrate_ug_per_m3_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_nitrate_ug_per_m3" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitric_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nitric_acid_expressed_as_nitrogen_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_nitric_acid meta_nitric_acid" />
    <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="2025-10-07T08:37:01.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="revision with corrected variable order, corrected time, corrected processing of values &lt; LD" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="BE0007R" />
    <attribute name="ebas_platform_code" value="BE0007S" />
    <attribute name="ebas_station_name" value="Vielsalm" />
    <attribute name="ebas_station_latitude" type="double" value="50.304003" />
    <attribute name="ebas_station_longitude" type="double" value="6.001271" />
    <attribute name="ebas_station_altitude" value="487.0 m" />
    <attribute name="ebas_measurement_altitude" value="496.0 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitric_acid" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="BE03L" />
    <attribute name="ebas_instrument_type" value="filter_4pack" />
    <attribute name="ebas_instrument_name" value="Partisol_2300" />
    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
    <attribute name="ebas_instrument_model" value="Partisol 2300" />
    <attribute name="ebas_instrument_serial_number" value="2300a203040905" />
    <attribute name="ebas_analytical_laboratory_code" value="BE03L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC" />
    <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
    <attribute name="ebas_analytical_instrument_model" value="ICS-3000" />
    <attribute name="ebas_analytical_instrument_serial_number" value="08120133" />
    <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward facing" />
    <attribute name="ebas_flow_rate" value="10.0 l/min" />
    <attribute name="ebas_medium" value="Cellulose" />
    <attribute name="ebas_coating_solution" value="NaOH+CaCO3" />
    <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit" value="0.005 ug N/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if within detection limit, flagged with 781" />
    <attribute name="ebas_organization" value="BE03L, Institut Scientifique de Service Public, ISSeP, , &quot;Rue Chéra, 200&quot;, , 4000, Liege, Belgium" />
    <attribute name="ebas_framework_acronym" value="CAMP, EMEP" />
    <attribute name="ebas_framework_name" value="OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value="The OSPARCOM Comprehensive Atmospheric Monitoring Programme goal is the assessment of the atmospheric input of selected contaminants to the OSPAR maritime area and regions., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Bergmans, Benjamin, b.bergmans@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chera 200, , 4000 Liege, Belgium&quot;, &quot;Minet, Isabelle, i.minet@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_submitter" value="&quot;Palmaerts, Benjamin, b.palmaerts@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitricacidmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="nitric acid mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedasnitrogen" />
    <attribute name="actris_constraints_preferred_term" value="expressed as nitrogen" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/lowvolumefiltersampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume filter sampler" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/CAMP, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP" />
    <attribute name="actris_framework_preferred_term" value="CAMP, EMEP" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_nitric_acid" shape="qc_nitric_acid_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_nitric_acid" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_potassium" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_potassium_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_potassium meta_potassium" />
    <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="2025-10-07T08:37:01.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="revision with corrected variable order, corrected time, corrected processing of values &lt; LD" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="BE0007R" />
    <attribute name="ebas_platform_code" value="BE0007S" />
    <attribute name="ebas_station_name" value="Vielsalm" />
    <attribute name="ebas_station_latitude" type="double" value="50.304003" />
    <attribute name="ebas_station_longitude" type="double" value="6.001271" />
    <attribute name="ebas_station_altitude" value="487.0 m" />
    <attribute name="ebas_measurement_altitude" value="496.0 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="potassium" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="BE03L" />
    <attribute name="ebas_instrument_type" value="filter_4pack" />
    <attribute name="ebas_instrument_name" value="Partisol_2300" />
    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
    <attribute name="ebas_instrument_model" value="Partisol 2300" />
    <attribute name="ebas_instrument_serial_number" value="2300a203040905" />
    <attribute name="ebas_analytical_laboratory_code" value="BE03L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC" />
    <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
    <attribute name="ebas_analytical_instrument_model" value="ICS-3000" />
    <attribute name="ebas_analytical_instrument_serial_number" value="08120133" />
    <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward facing" />
    <attribute name="ebas_flow_rate" value="10.0 l/min" />
    <attribute name="ebas_medium" value="Teflon" />
    <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit" value="0.01 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if within detection limit, flagged with 781" />
    <attribute name="ebas_organization" value="BE03L, Institut Scientifique de Service Public, ISSeP, , &quot;Rue Chéra, 200&quot;, , 4000, Liege, Belgium" />
    <attribute name="ebas_framework_acronym" value="CAMP, EMEP" />
    <attribute name="ebas_framework_name" value="OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value="The OSPARCOM Comprehensive Atmospheric Monitoring Programme goal is the assessment of the atmospheric input of selected contaminants to the OSPAR maritime area and regions., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Bergmans, Benjamin, b.bergmans@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chera 200, , 4000 Liege, Belgium&quot;, &quot;Minet, Isabelle, i.minet@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_submitter" value="&quot;Palmaerts, Benjamin, b.palmaerts@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlepotassiummassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle potassium mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/lowvolumefiltersampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume filter sampler" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/CAMP, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP" />
    <attribute name="actris_framework_preferred_term" value="CAMP, EMEP" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_potassium" shape="qc_potassium_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_potassium" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_sodium" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_sodium_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_sodium meta_sodium" />
    <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="2025-10-07T08:37:01.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="revision with corrected variable order, corrected time, corrected processing of values &lt; LD" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="BE0007R" />
    <attribute name="ebas_platform_code" value="BE0007S" />
    <attribute name="ebas_station_name" value="Vielsalm" />
    <attribute name="ebas_station_latitude" type="double" value="50.304003" />
    <attribute name="ebas_station_longitude" type="double" value="6.001271" />
    <attribute name="ebas_station_altitude" value="487.0 m" />
    <attribute name="ebas_measurement_altitude" value="496.0 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="sodium" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="BE03L" />
    <attribute name="ebas_instrument_type" value="filter_4pack" />
    <attribute name="ebas_instrument_name" value="Partisol_2300" />
    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
    <attribute name="ebas_instrument_model" value="Partisol 2300" />
    <attribute name="ebas_instrument_serial_number" value="2300a203040905" />
    <attribute name="ebas_analytical_laboratory_code" value="BE03L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC" />
    <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
    <attribute name="ebas_analytical_instrument_model" value="ICS-3000" />
    <attribute name="ebas_analytical_instrument_serial_number" value="08120133" />
    <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward facing" />
    <attribute name="ebas_flow_rate" value="10.0 l/min" />
    <attribute name="ebas_medium" value="Teflon" />
    <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit" value="0.01 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if within detection limit, flagged with 781" />
    <attribute name="ebas_organization" value="BE03L, Institut Scientifique de Service Public, ISSeP, , &quot;Rue Chéra, 200&quot;, , 4000, Liege, Belgium" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlesodiummassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle sodium mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
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  </variable>
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
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    <attribute name="ebas_station_code" value="BE0007R" />
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    <attribute name="ebas_component" value="sulphate_corrected" />
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    <attribute name="ebas_instrument_name" value="Partisol_2300" />
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    <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
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    <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward facing" />
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    <attribute name="ebas_volume_std_pressure" value="ambient" />
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    <attribute name="ebas_framework_name" value="OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlesulphatemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle sulphate mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
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  <variable name="qc_sulphate_corrected_ug_S_per_m3" shape="qc_sulphate_corrected_ug_S_per_m3_flags time" type="int">
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  <variable name="meta_sulphate_corrected_ug_S_per_m3" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="ebas_component" value="sulphate_corrected" />
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    <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
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    <attribute name="ebas_inlet_description" value="Downward facing" />
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    <attribute name="actris_variable_preferred_term" value="aerosol particle sulphate mass concentration" />
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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="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="BE0007R" />
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    <attribute name="ebas_measurement_height" value="3.5 m" />
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    <attribute name="ebas_component" value="sulphate_total" />
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    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
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    <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
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    <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
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    <attribute name="ebas_inlet_description" value="Downward facing" />
    <attribute name="ebas_flow_rate" value="10.0 l/min" />
    <attribute name="ebas_medium" value="Teflon" />
    <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
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    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
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    <attribute name="ebas_framework_acronym" value="CAMP, EMEP" />
    <attribute name="ebas_framework_name" value="OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value="The OSPARCOM Comprehensive Atmospheric Monitoring Programme goal is the assessment of the atmospheric input of selected contaminants to the OSPAR maritime area and regions., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Bergmans, Benjamin, b.bergmans@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chera 200, , 4000 Liege, Belgium&quot;, &quot;Minet, Isabelle, i.minet@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_submitter" value="&quot;Palmaerts, Benjamin, b.palmaerts@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlesulphatemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle sulphate mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedassulfur" />
    <attribute name="actris_constraints_preferred_term" value="expressed as sulfur" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/lowvolumefiltersampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume filter sampler" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/CAMP, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP" />
    <attribute name="actris_framework_preferred_term" value="CAMP, EMEP" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_sulphate_total_ug_S_per_m3" shape="qc_sulphate_total_ug_S_per_m3_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_sulphate_total_ug_S_per_m3" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_sulphate_total_ug_per_m3" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_sulphate_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_sulphate_total_ug_per_m3 meta_sulphate_total_ug_per_m3" />
    <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="2025-10-07T08:37:01.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="revision with corrected variable order, corrected time, corrected processing of values &lt; LD" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="BE0007R" />
    <attribute name="ebas_platform_code" value="BE0007S" />
    <attribute name="ebas_station_name" value="Vielsalm" />
    <attribute name="ebas_station_latitude" type="double" value="50.304003" />
    <attribute name="ebas_station_longitude" type="double" value="6.001271" />
    <attribute name="ebas_station_altitude" value="487.0 m" />
    <attribute name="ebas_measurement_altitude" value="496.0 m" />
    <attribute name="ebas_measurement_height" value="3.5 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="aerosol" />
    <attribute name="ebas_laboratory_code" value="BE03L" />
    <attribute name="ebas_instrument_type" value="filter_4pack" />
    <attribute name="ebas_instrument_name" value="Partisol_2300" />
    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
    <attribute name="ebas_instrument_model" value="Partisol 2300" />
    <attribute name="ebas_instrument_serial_number" value="2300a203040905" />
    <attribute name="ebas_analytical_laboratory_code" value="BE03L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC" />
    <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
    <attribute name="ebas_analytical_instrument_model" value="ICS-3000" />
    <attribute name="ebas_analytical_instrument_serial_number" value="08120133" />
    <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward facing" />
    <attribute name="ebas_flow_rate" value="10.0 l/min" />
    <attribute name="ebas_medium" value="Teflon" />
    <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit" value="0.01 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if within detection limit, flagged with 781" />
    <attribute name="ebas_organization" value="BE03L, Institut Scientifique de Service Public, ISSeP, , &quot;Rue Chéra, 200&quot;, , 4000, Liege, Belgium" />
    <attribute name="ebas_framework_acronym" value="CAMP, EMEP" />
    <attribute name="ebas_framework_name" value="OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value="The OSPARCOM Comprehensive Atmospheric Monitoring Programme goal is the assessment of the atmospheric input of selected contaminants to the OSPAR maritime area and regions., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Bergmans, Benjamin, b.bergmans@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chera 200, , 4000 Liege, Belgium&quot;, &quot;Minet, Isabelle, i.minet@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_submitter" value="&quot;Palmaerts, Benjamin, b.palmaerts@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Data converted on export from EBAS from 'ug S/m3' to 'ug/m3', conversion factor 2.9962. Detection limit converted from '0.005 ug S/m3' to '0.01 ug/m3', conversion factor 2.9962." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlesulphatemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle sulphate mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/lowvolumefiltersampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume filter sampler" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/CAMP, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP" />
    <attribute name="actris_framework_preferred_term" value="CAMP, EMEP" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_sulphate_total_ug_per_m3" shape="qc_sulphate_total_ug_per_m3_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_sulphate_total_ug_per_m3" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_sulphur_dioxide" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_sulphur_dioxide_expressed_as_sulphur_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_sulphur_dioxide meta_sulphur_dioxide" />
    <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="2025-10-07T08:37:01.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="revision with corrected variable order, corrected time, corrected processing of values &lt; LD" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="BE0007R" />
    <attribute name="ebas_platform_code" value="BE0007S" />
    <attribute name="ebas_station_name" value="Vielsalm" />
    <attribute name="ebas_station_latitude" type="double" value="50.304003" />
    <attribute name="ebas_station_longitude" type="double" value="6.001271" />
    <attribute name="ebas_station_altitude" value="487.0 m" />
    <attribute name="ebas_measurement_altitude" value="496.0 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="sulphur_dioxide" />
    <attribute name="ebas_unit" value="ug S/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="BE03L" />
    <attribute name="ebas_instrument_type" value="filter_4pack" />
    <attribute name="ebas_instrument_name" value="Partisol_2300" />
    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
    <attribute name="ebas_instrument_model" value="Partisol 2300" />
    <attribute name="ebas_instrument_serial_number" value="2300a203040905" />
    <attribute name="ebas_analytical_laboratory_code" value="BE03L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC" />
    <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
    <attribute name="ebas_analytical_instrument_model" value="ICS-3000" />
    <attribute name="ebas_analytical_instrument_serial_number" value="08120133" />
    <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward facing" />
    <attribute name="ebas_flow_rate" value="10.0 l/min" />
    <attribute name="ebas_medium" value="Cellulose" />
    <attribute name="ebas_coating_solution" value="NaOH+CaCO3" />
    <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit" value="0.002 ug S/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if within detection limit, flagged with 781" />
    <attribute name="ebas_organization" value="BE03L, Institut Scientifique de Service Public, ISSeP, , &quot;Rue Chéra, 200&quot;, , 4000, Liege, Belgium" />
    <attribute name="ebas_framework_acronym" value="CAMP, EMEP" />
    <attribute name="ebas_framework_name" value="OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/sulfurdioxidemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="sulfur dioxide mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_constraints_preferred_term" value="expressed as sulfur" />
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    <attribute name="actris_instrument_type_preferred_term" value="low volume filter sampler" />
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    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_sulphur_dioxide" shape="qc_sulphur_dioxide_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_sulphur_dioxide" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_sum_ammonia_and_ammonium" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_sum_ammonia_and_ammonium_expressed_as_nitrogen_in_gaseous_phase_and_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_sum_ammonia_and_ammonium meta_sum_ammonia_and_ammonium" />
    <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="2025-10-07T08:37:01.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="revision with corrected variable order, corrected time, corrected processing of values &lt; LD" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="BE0007R" />
    <attribute name="ebas_platform_code" value="BE0007S" />
    <attribute name="ebas_station_name" value="Vielsalm" />
    <attribute name="ebas_station_latitude" type="double" value="50.304003" />
    <attribute name="ebas_station_longitude" type="double" value="6.001271" />
    <attribute name="ebas_station_altitude" value="487.0 m" />
    <attribute name="ebas_measurement_altitude" value="496.0 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="sum_ammonia_and_ammonium" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air+aerosol" />
    <attribute name="ebas_laboratory_code" value="BE03L" />
    <attribute name="ebas_instrument_type" value="filter_4pack" />
    <attribute name="ebas_instrument_name" value="Partisol_2300" />
    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
    <attribute name="ebas_instrument_model" value="Partisol 2300" />
    <attribute name="ebas_instrument_serial_number" value="2300a203040905" />
    <attribute name="ebas_analytical_laboratory_code" value="BE03L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC" />
    <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
    <attribute name="ebas_analytical_instrument_model" value="ICS-3000" />
    <attribute name="ebas_analytical_instrument_serial_number" value="08120133" />
    <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward facing" />
    <attribute name="ebas_flow_rate" value="10.0 l/min" />
    <attribute name="ebas_medium" value="Teflon+cellulose" />
    <attribute name="ebas_coating_solution" value="Oxalic acid" />
    <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit" value="0.01 ug N/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if within detection limit, flagged with 781" />
    <attribute name="ebas_organization" value="BE03L, Institut Scientifique de Service Public, ISSeP, , &quot;Rue Chéra, 200&quot;, , 4000, Liege, Belgium" />
    <attribute name="ebas_framework_acronym" value="CAMP, EMEP" />
    <attribute name="ebas_framework_name" value="OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value="The OSPARCOM Comprehensive Atmospheric Monitoring Programme goal is the assessment of the atmospheric input of selected contaminants to the OSPAR maritime area and regions., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Bergmans, Benjamin, b.bergmans@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chera 200, , 4000 Liege, Belgium&quot;, &quot;Minet, Isabelle, i.minet@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_submitter" value="&quot;Palmaerts, Benjamin, b.palmaerts@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticleammoniaandammoniummassconcentration" />
    <attribute name="actris_variable_preferred_term" value="gas and particle ammonia and ammonium mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="gas and particle phase" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedasnitrogen" />
    <attribute name="actris_constraints_preferred_term" value="expressed as nitrogen" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/lowvolumefiltersampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume filter sampler" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/CAMP, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP" />
    <attribute name="actris_framework_preferred_term" value="CAMP, EMEP" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_sum_ammonia_and_ammonium" shape="qc_sum_ammonia_and_ammonium_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_sum_ammonia_and_ammonium" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_sum_nitric_acid_and_nitrate" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_sum_nitric_acid_and_nitrate_expressed_as_nitrogen_in_gaseous_phase_and_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_sum_nitric_acid_and_nitrate meta_sum_nitric_acid_and_nitrate" />
    <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="2025-10-07T08:37:01.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="revision with corrected variable order, corrected time, corrected processing of values &lt; LD" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="BE0007R" />
    <attribute name="ebas_platform_code" value="BE0007S" />
    <attribute name="ebas_station_name" value="Vielsalm" />
    <attribute name="ebas_station_latitude" type="double" value="50.304003" />
    <attribute name="ebas_station_longitude" type="double" value="6.001271" />
    <attribute name="ebas_station_altitude" value="487.0 m" />
    <attribute name="ebas_measurement_altitude" value="496.0 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="sum_nitric_acid_and_nitrate" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air+aerosol" />
    <attribute name="ebas_laboratory_code" value="BE03L" />
    <attribute name="ebas_instrument_type" value="filter_4pack" />
    <attribute name="ebas_instrument_name" value="Partisol_2300" />
    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
    <attribute name="ebas_instrument_model" value="Partisol 2300" />
    <attribute name="ebas_instrument_serial_number" value="2300a203040905" />
    <attribute name="ebas_analytical_laboratory_code" value="BE03L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC" />
    <attribute name="ebas_analytical_instrument_name" value="CI-Dionex" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
    <attribute name="ebas_analytical_instrument_model" value="ICS-3000" />
    <attribute name="ebas_analytical_instrument_serial_number" value="08120133" />
    <attribute name="ebas_method_ref" value="BE03L_CI-Dionex" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward facing" />
    <attribute name="ebas_flow_rate" value="10.0 l/min" />
    <attribute name="ebas_medium" value="Teflon+cellulose" />
    <attribute name="ebas_coating_solution" value="KOH" />
    <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit" value="0.005 ug N/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if within detection limit, flagged with 781" />
    <attribute name="ebas_organization" value="BE03L, Institut Scientifique de Service Public, ISSeP, , &quot;Rue Chéra, 200&quot;, , 4000, Liege, Belgium" />
    <attribute name="ebas_framework_acronym" value="CAMP, EMEP" />
    <attribute name="ebas_framework_name" value="OSPARCOM - Comprehensive Atmospheric Monitoring Programme, European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value="The OSPARCOM Comprehensive Atmospheric Monitoring Programme goal is the assessment of the atmospheric input of selected contaminants to the OSPAR maritime area and regions., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Bergmans, Benjamin, b.bergmans@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chera 200, , 4000 Liege, Belgium&quot;, &quot;Minet, Isabelle, i.minet@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_submitter" value="&quot;Palmaerts, Benjamin, b.palmaerts@issep.be, Institut Scientifique de Service Public, ISSeP, 200, Air Quality, Rue du Chéra 200, 4000, Liège, Belgium&quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: CAMP, EMEP. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticlenitricacidandnitratemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="gas and particle nitric acid and nitrate mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="gas and particle phase" />
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    <attribute name="actris_constraints_preferred_term" value="expressed as nitrogen" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
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    <attribute name="actris_instrument_type_preferred_term" value="low volume filter sampler" />
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    <attribute name="actris_framework_preferred_term" value="CAMP, EMEP" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_sum_nitric_acid_and_nitrate" shape="qc_sum_nitric_acid_and_nitrate_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_sum_nitric_acid_and_nitrate" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="metadata_time" shape="metadata_time" type="double">
    <attribute name="long_name" value="time of ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
</netcdf>
