<?xml version="1.0" encoding="UTF-8"?>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2" location="Not provided because of security concerns.">
  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="OC/EC at Ispra" />
  <attribute name="summary" value="OC/EC at Ispra. These measurements are gathered as a part of the following projects ACTRIS, CAMPAIGN, EMEP, GAW-WDCA and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['elemental_carbon in pm25 (mass_concentration_of_elemental_carbon_in_pm2p5_in_air)', 'organic_carbon in pm25 (mass_concentration_of_organic_carbon_in_pm2p5_in_air)', 'total_carbon in pm25 (mass_concentration_of_total_carbon_in_pm2p5_in_air)']" />
  <attribute name="keywords" value="Ispra IT0004R elemental_carbon organic_carbon total_carbon pm25 ACTRIS CAMPAIGN EMEP GAW-WDCA mass_concentration_of_elemental_carbon_in_pm2p5_in_air mass_concentration_of_organic_carbon_in_pm2p5_in_air mass_concentration_of_total_carbon_in_pm2p5_in_air" />
  <attribute name="id" value="JSKA-URJJ.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="ACTRIS, CAMPAIGN, EMEP, GAW-WDCA" />
  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/JSKA-URJJ" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Cavalli, F., Putaud, J., ACTRIS, CAMPAIGN, EMEP, GAW-WDCA, 2024, OC/EC at Ispra, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/JSKA-URJJ" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="IT04L &quot;EC Joint Research Centre&quot; EC-JRC-IES &quot;Institute for Environment and Sustainability&quot; &quot;Via Enrico Fermi 2749&quot; 21027 Ispra Italy" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2024-08-27T21:17:46.833531Z" />
  <attribute name="date_metadata_modified" value="2024-08-27T21:17:46Z" />
  <attribute name="creator_name" value="Fabrizia Cavalli, JP Putaud" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="fabrizia.cavalli@ec.europa.eu, jean.putaud@ec.europa.eu" />
  <attribute name="creator_institution" value="&quot;EC Joint Research Centre, EC-JRC&quot;, &quot;EC Joint Research Centre, EC-JRC&quot;" />
  <attribute name="contributor_name" value="JP Putaud" />
  <attribute name="contributor_role" value="data submitter" />
  <attribute name="publisher_type" value="institution" />
  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_institution" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_email" value="ebas@nilu.no" />
  <attribute name="publisher_url" value="https://www.nilu.no/" />
  <attribute name="geospatial_bounds" value="POINT Z (8.635722 45.814556 209)" />
  <attribute name="geospatial_lat_min" type="double" value="45.814556" />
  <attribute name="geospatial_lat_max" type="double" value="45.814556" />
  <attribute name="geospatial_lon_min" type="double" value="8.635722" />
  <attribute name="geospatial_lon_max" type="double" value="8.635722" />
  <attribute name="geospatial_vertical_min" type="double" value="209.0" />
  <attribute name="geospatial_vertical_max" type="double" value="209.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="time_coverage_start" value="2020-01-01T08:00:00Z" />
  <attribute name="time_coverage_end" value="2024-01-01T08:00:00Z" />
  <attribute name="time_coverage_duration" value="P0004-00-00T00:00:00" />
  <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="Cavalli, F., Putaud, J., ACTRIS, CAMPAIGN, EMEP, GAW-WDCA, 2024, OC/EC at Ispra, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/JSKA-URJJ" />
  <attribute name="ebas_set_type_code" value="TI" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="JSKA-URJJ.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/JSKA-URJJ" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/JSKA-URJJ" />
  <attribute name="ebas_file_creation" value="2026-06-11T21:01:19.992796Z" />
  <attribute name="ebas_export_state" value="2024-08-27T21:17:46.833531Z" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="2020-01-01T08:00:00.000000Z" />
  <attribute name="ebas_revision_date" value="2024-08-27T21:17:46.833531Z" />
  <attribute name="ebas_version_description" value="initial submision" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="4y" />
  <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="IT0004R" />
  <attribute name="ebas_platform_code" value="IT0004S" />
  <attribute name="ebas_station_name" value="Ispra" />
  <attribute name="ebas_station_wdca_id" value="GAWAIT__IPR" />
  <attribute name="ebas_station_gaw_id" value="IPR" />
  <attribute name="ebas_station_gaw_name" value="Ispra" />
  <attribute name="ebas_station_land_use" value="Other" />
  <attribute name="ebas_station_setting" value="Rural" />
  <attribute name="ebas_station_gaw_type" value="R" />
  <attribute name="ebas_station_wmo_region" type="long" value="6" />
  <attribute name="ebas_station_latitude" type="double" value="45.814556" />
  <attribute name="ebas_station_longitude" type="double" value="8.635722" />
  <attribute name="ebas_station_altitude" value="209.0 m" />
  <attribute name="ebas_measurement_height" value="6.5 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_unit" value="ug C/m3" />
  <attribute name="ebas_matrix" value="pm25" />
  <attribute name="ebas_laboratory_code" value="IT04L" />
  <attribute name="ebas_instrument_type" value="low_vol_sampler" />
  <attribute name="ebas_instrument_name" value="JRC_PM25_01" />
  <attribute name="ebas_instrument_manufacturer" value="Rupprecht&amp;Patashnick" />
  <attribute name="ebas_instrument_model" value="Partisol2025" />
  <attribute name="ebas_instrument_serial_number" value="B215620603" />
  <attribute name="ebas_analytical_laboratory_code" value="IT04L" />
  <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
  <attribute name="ebas_analytical_instrument_name" value="JRC_sunset_001" />
  <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
  <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 4L" />
  <attribute name="ebas_analytical_instrument_serial_number" value="173-5" />
  <attribute name="ebas_method_ref" value="IT04L_Denuder+Single-filter+EUSAAR_2" />
  <attribute name="ebas_standard_method" value="SOP=EN16909:2017, TEMP=EUSAAR_2" />
  <attribute name="ebas_inlet_type" value="Cyclone" />
  <attribute name="ebas_inlet_description" value="PM2.5 Partisol sampling head followed by denuder" />
  <attribute name="ebas_flow_rate" value="16.7 l/min" />
  <attribute name="ebas_filter_face_velocity" value="23.0 cm/s" />
  <attribute name="ebas_exposed_filter_area" value="11.897 cm2" />
  <attribute name="ebas_filter_description" value="Pallflex_Tissuquartz_2500QAT-UP" />
  <attribute name="ebas_medium" value="Quartz" />
  <attribute name="ebas_filter_prefiring" value="Not prefired" />
  <attribute name="ebas_filter_conditioning" value="293.0 K, 20.0 %RH, 24.0 h" />
  <attribute name="ebas_sample_preparation" value="None" />
  <attribute name="ebas_blank_correction" value="Blank corrected" />
  <attribute name="ebas_artifact_correction" value="Positive and negative" />
  <attribute name="ebas_artifact_correction_description" value="Negative sampling artifacts estimated from literature/campaign data (mean negative artifact = 5.3%), as was the positive artifact not accounted for by the denuder (mean positive artifact not accounted for by the denuder = 4.7%)." />
  <attribute name="ebas_charring_correction" value="By laser transmission" />
  <attribute name="ebas_humidity_temperaure_control" value="None" />
  <attribute name="ebas_humidity_temperaure_control_description" value="Loaded filter kept at ambient temperature +/- 5K" />
  <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 + instrument uncertainty" />
  <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
  <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured and flagged as below detection limit" />
  <attribute name="ebas_organization" value="IT04L, EC Joint Research Centre, EC-JRC-IES, Institute for Environment and Sustainability, Via Enrico Fermi 2749, , 21027, Ispra, Italy" />
  <attribute name="ebas_originator" value="&quot;Cavalli, Fabrizia, fabrizia.cavalli@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;, &quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
  <attribute name="ebas_submitter" value="&quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
  <attribute name="_NCProperties" value="version=2,netcdf=4.9.3,hdf5=1.14.6" />
  <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="1097" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="6" />
  <dimension name="qc_elemental_carbon_amean_flags" length="2" />
  <dimension name="qc_elemental_carbon_uncertainty_flags" length="1" />
  <dimension name="qc_organic_carbon_amean_flags" length="2" />
  <dimension name="qc_organic_carbon_uncertainty_flags" length="1" />
  <dimension name="d_Artifact" length="2" />
  <dimension name="qc_organic_carbon_amean_d_Artifact_flags" length="1" />
  <dimension name="qc_organic_carbon_uncertainty_d_Artifact_flags" length="1" />
  <dimension name="d_Fraction" length="5" />
  <dimension name="qc_organic_carbon_amean_d_Fraction_flags" length="2" />
  <dimension name="qc_total_carbon_amean_flags" length="2" />
  <dimension name="qc_total_carbon_uncertainty_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2020-01-01T20:00:00Z" />
    <attribute name="time_coverage_end" value="2023-12-31T20:00:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="115094.0" />
    <attribute name="time_coverage_duration" value="P0Y0M1460DT0H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-07-07" />
    <attribute name="nciso_version" value="2.4.8" />
  </group>
  <variable name="time_bnds" shape="time tbnds" type="double">
    <attribute name="long_name" value="time bounds for measurement" />
  </variable>
  <variable name="metadata_time_bnds" shape="metadata_time tbnds" type="double">
    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
  </variable>
  <variable name="v_elemental_carbon_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_elemental_carbon_in_pm2p5_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="qc_elemental_carbon_amean meta_elemental_carbon_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2024-08-27T21:17:46.833531Z" />
    <attribute name="ebas_version_description" value="initial submision" />
    <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="IT0004R" />
    <attribute name="ebas_platform_code" value="IT0004S" />
    <attribute name="ebas_station_name" value="Ispra" />
    <attribute name="ebas_station_wdca_id" value="GAWAIT__IPR" />
    <attribute name="ebas_station_gaw_id" value="IPR" />
    <attribute name="ebas_station_gaw_name" value="Ispra" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="45.814556" />
    <attribute name="ebas_station_longitude" type="double" value="8.635722" />
    <attribute name="ebas_station_altitude" value="209.0 m" />
    <attribute name="ebas_measurement_height" value="6.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="elemental_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="IT04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="JRC_PM25_01" />
    <attribute name="ebas_instrument_manufacturer" value="Rupprecht&amp;Patashnick" />
    <attribute name="ebas_instrument_model" value="Partisol2025" />
    <attribute name="ebas_instrument_serial_number" value="B215620603" />
    <attribute name="ebas_analytical_laboratory_code" value="IT04L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="JRC_sunset_001" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 4L" />
    <attribute name="ebas_analytical_instrument_serial_number" value="173-5" />
    <attribute name="ebas_method_ref" value="IT04L_Denuder+Single-filter+EUSAAR_2" />
    <attribute name="ebas_standard_method" value="SOP=EN16909:2017, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5 Partisol sampling head followed by denuder" />
    <attribute name="ebas_flow_rate" value="16.7 l/min" />
    <attribute name="ebas_filter_face_velocity" value="23.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.897 cm2" />
    <attribute name="ebas_filter_description" value="Pallflex_Tissuquartz_2500QAT-UP" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="Not prefired" />
    <attribute name="ebas_filter_conditioning" value="293.0 K, 20.0 %RH, 24.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="Positive and negative" />
    <attribute name="ebas_artifact_correction_description" value="Negative sampling artifacts estimated from literature/campaign data (mean negative artifact = 5.3%), as was the positive artifact not accounted for by the denuder (mean positive artifact not accounted for by the denuder = 4.7%)." />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Loaded filter kept at ambient temperature +/- 5K" />
    <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 + instrument uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured and flagged as below detection limit" />
    <attribute name="ebas_organization" value="IT04L, EC Joint Research Centre, EC-JRC-IES, Institute for Environment and Sustainability, Via Enrico Fermi 2749, , 21027, Ispra, Italy" />
    <attribute name="ebas_framework_acronym" value="" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="" />
    <attribute name="ebas_framework_contact_email" value="" />
    <attribute name="ebas_originator" value="&quot;Cavalli, Fabrizia, fabrizia.cavalli@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;, &quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="ebas_submitter" value="&quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticleelementalcarbonmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle elemental carbon mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/PM2.5" />
    <attribute name="actris_matrix_preferred_term" value="PM2.5" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedascarbon, https://vocabulary.actris.nilu.no/actris_vocab/elemental" />
    <attribute name="actris_constraints_preferred_term" value="expressed as carbon, elemental" />
    <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/lowvolumesampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume sampler" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_elemental_carbon_amean" shape="qc_elemental_carbon_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_elemental_carbon_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_elemental_carbon_uncertainty" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_elemental_carbon_in_pm2p5_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="qc_elemental_carbon_uncertainty meta_elemental_carbon_uncertainty" />
    <attribute name="cell_methods" value="time: uncertainty" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2024-08-27T21:17:46.833531Z" />
    <attribute name="ebas_version_description" value="initial submision" />
    <attribute name="ebas_statistics" value="uncertainty" />
    <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="IT0004R" />
    <attribute name="ebas_platform_code" value="IT0004S" />
    <attribute name="ebas_station_name" value="Ispra" />
    <attribute name="ebas_station_wdca_id" value="GAWAIT__IPR" />
    <attribute name="ebas_station_gaw_id" value="IPR" />
    <attribute name="ebas_station_gaw_name" value="Ispra" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="45.814556" />
    <attribute name="ebas_station_longitude" type="double" value="8.635722" />
    <attribute name="ebas_station_altitude" value="209.0 m" />
    <attribute name="ebas_measurement_height" value="6.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="elemental_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="IT04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="JRC_PM25_01" />
    <attribute name="ebas_instrument_manufacturer" value="Rupprecht&amp;Patashnick" />
    <attribute name="ebas_instrument_model" value="Partisol2025" />
    <attribute name="ebas_instrument_serial_number" value="B215620603" />
    <attribute name="ebas_analytical_laboratory_code" value="IT04L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="JRC_sunset_001" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 4L" />
    <attribute name="ebas_analytical_instrument_serial_number" value="173-5" />
    <attribute name="ebas_method_ref" value="IT04L_Denuder+Single-filter+EUSAAR_2" />
    <attribute name="ebas_standard_method" value="SOP=EN16909:2017, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5 Partisol sampling head followed by denuder" />
    <attribute name="ebas_flow_rate" value="16.7 l/min" />
    <attribute name="ebas_filter_face_velocity" value="23.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.897 cm2" />
    <attribute name="ebas_filter_description" value="Pallflex_Tissuquartz_2500QAT-UP" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="Not prefired" />
    <attribute name="ebas_filter_conditioning" value="293.0 K, 20.0 %RH, 24.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="Positive and negative" />
    <attribute name="ebas_artifact_correction_description" value="Negative sampling artifacts estimated from literature/campaign data (mean negative artifact = 5.3%), as was the positive artifact not accounted for by the denuder (mean positive artifact not accounted for by the denuder = 4.7%)." />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Loaded filter kept at ambient temperature +/- 5K" />
    <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 + instrument uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured and flagged as below detection limit" />
    <attribute name="ebas_organization" value="IT04L, EC Joint Research Centre, EC-JRC-IES, Institute for Environment and Sustainability, Via Enrico Fermi 2749, , 21027, Ispra, Italy" />
    <attribute name="ebas_framework_acronym" value="" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="" />
    <attribute name="ebas_framework_contact_email" value="" />
    <attribute name="ebas_originator" value="&quot;Cavalli, Fabrizia, fabrizia.cavalli@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;, &quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="ebas_submitter" value="&quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticleelementalcarbonmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle elemental carbon mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/PM2.5" />
    <attribute name="actris_matrix_preferred_term" value="PM2.5" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedascarbon, https://vocabulary.actris.nilu.no/actris_vocab/elemental" />
    <attribute name="actris_constraints_preferred_term" value="expressed as carbon, elemental" />
    <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/lowvolumesampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume sampler" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_elemental_carbon_uncertainty" shape="qc_elemental_carbon_uncertainty_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_elemental_carbon_uncertainty" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_organic_carbon_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_carbon_in_pm2p5_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="qc_organic_carbon_amean meta_organic_carbon_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2024-08-27T21:17:46.833531Z" />
    <attribute name="ebas_version_description" value="initial submision" />
    <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="IT0004R" />
    <attribute name="ebas_platform_code" value="IT0004S" />
    <attribute name="ebas_station_name" value="Ispra" />
    <attribute name="ebas_station_wdca_id" value="GAWAIT__IPR" />
    <attribute name="ebas_station_gaw_id" value="IPR" />
    <attribute name="ebas_station_gaw_name" value="Ispra" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="45.814556" />
    <attribute name="ebas_station_longitude" type="double" value="8.635722" />
    <attribute name="ebas_station_altitude" value="209.0 m" />
    <attribute name="ebas_measurement_height" value="6.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="IT04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="JRC_PM25_01" />
    <attribute name="ebas_instrument_manufacturer" value="Rupprecht&amp;Patashnick" />
    <attribute name="ebas_instrument_model" value="Partisol2025" />
    <attribute name="ebas_instrument_serial_number" value="B215620603" />
    <attribute name="ebas_analytical_laboratory_code" value="IT04L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="JRC_sunset_001" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 4L" />
    <attribute name="ebas_analytical_instrument_serial_number" value="173-5" />
    <attribute name="ebas_method_ref" value="IT04L_Denuder+Single-filter+EUSAAR_2" />
    <attribute name="ebas_standard_method" value="SOP=EN16909:2017, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5 Partisol sampling head followed by denuder" />
    <attribute name="ebas_flow_rate" value="16.7 l/min" />
    <attribute name="ebas_filter_face_velocity" value="23.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.897 cm2" />
    <attribute name="ebas_filter_description" value="Pallflex_Tissuquartz_2500QAT-UP" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="Not prefired" />
    <attribute name="ebas_filter_conditioning" value="293.0 K, 20.0 %RH, 24.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="Positive and negative" />
    <attribute name="ebas_artifact_correction_description" value="Negative sampling artifacts estimated from literature/campaign data (mean negative artifact = 5.3%), as was the positive artifact not accounted for by the denuder (mean positive artifact not accounted for by the denuder = 4.7%)." />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Loaded filter kept at ambient temperature +/- 5K" />
    <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 + instrument uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured and flagged as below detection limit" />
    <attribute name="ebas_organization" value="IT04L, EC Joint Research Centre, EC-JRC-IES, Institute for Environment and Sustainability, Via Enrico Fermi 2749, , 21027, Ispra, Italy" />
    <attribute name="ebas_framework_acronym" value="" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="" />
    <attribute name="ebas_framework_contact_email" value="" />
    <attribute name="ebas_originator" value="&quot;Cavalli, Fabrizia, fabrizia.cavalli@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;, &quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="ebas_submitter" value="&quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticleorganiccarbonmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle organic carbon mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/PM2.5" />
    <attribute name="actris_matrix_preferred_term" value="PM2.5" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedascarbon" />
    <attribute name="actris_constraints_preferred_term" value="expressed as carbon" />
    <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/lowvolumesampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume sampler" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_organic_carbon_amean" shape="qc_organic_carbon_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_organic_carbon_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_organic_carbon_uncertainty" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_carbon_in_pm2p5_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="qc_organic_carbon_uncertainty meta_organic_carbon_uncertainty" />
    <attribute name="cell_methods" value="time: uncertainty" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2024-08-27T21:17:46.833531Z" />
    <attribute name="ebas_version_description" value="initial submision" />
    <attribute name="ebas_statistics" value="uncertainty" />
    <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="IT0004R" />
    <attribute name="ebas_platform_code" value="IT0004S" />
    <attribute name="ebas_station_name" value="Ispra" />
    <attribute name="ebas_station_wdca_id" value="GAWAIT__IPR" />
    <attribute name="ebas_station_gaw_id" value="IPR" />
    <attribute name="ebas_station_gaw_name" value="Ispra" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="45.814556" />
    <attribute name="ebas_station_longitude" type="double" value="8.635722" />
    <attribute name="ebas_station_altitude" value="209.0 m" />
    <attribute name="ebas_measurement_height" value="6.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="IT04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="JRC_PM25_01" />
    <attribute name="ebas_instrument_manufacturer" value="Rupprecht&amp;Patashnick" />
    <attribute name="ebas_instrument_model" value="Partisol2025" />
    <attribute name="ebas_instrument_serial_number" value="B215620603" />
    <attribute name="ebas_analytical_laboratory_code" value="IT04L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="JRC_sunset_001" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 4L" />
    <attribute name="ebas_analytical_instrument_serial_number" value="173-5" />
    <attribute name="ebas_method_ref" value="IT04L_Denuder+Single-filter+EUSAAR_2" />
    <attribute name="ebas_standard_method" value="SOP=EN16909:2017, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5 Partisol sampling head followed by denuder" />
    <attribute name="ebas_flow_rate" value="16.7 l/min" />
    <attribute name="ebas_filter_face_velocity" value="23.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.897 cm2" />
    <attribute name="ebas_filter_description" value="Pallflex_Tissuquartz_2500QAT-UP" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="Not prefired" />
    <attribute name="ebas_filter_conditioning" value="293.0 K, 20.0 %RH, 24.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="Positive and negative" />
    <attribute name="ebas_artifact_correction_description" value="Negative sampling artifacts estimated from literature/campaign data (mean negative artifact = 5.3%), as was the positive artifact not accounted for by the denuder (mean positive artifact not accounted for by the denuder = 4.7%)." />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Loaded filter kept at ambient temperature +/- 5K" />
    <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 + instrument uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured and flagged as below detection limit" />
    <attribute name="ebas_organization" value="IT04L, EC Joint Research Centre, EC-JRC-IES, Institute for Environment and Sustainability, Via Enrico Fermi 2749, , 21027, Ispra, Italy" />
    <attribute name="ebas_framework_acronym" value="" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="" />
    <attribute name="ebas_framework_contact_email" value="" />
    <attribute name="ebas_originator" value="&quot;Cavalli, Fabrizia, fabrizia.cavalli@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;, &quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="ebas_submitter" value="&quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticleorganiccarbonmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle organic carbon mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/PM2.5" />
    <attribute name="actris_matrix_preferred_term" value="PM2.5" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedascarbon" />
    <attribute name="actris_constraints_preferred_term" value="expressed as carbon" />
    <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/lowvolumesampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume sampler" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_organic_carbon_uncertainty" shape="qc_organic_carbon_uncertainty_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_organic_carbon_uncertainty" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_organic_carbon_amean_d_Artifact" shape="d_Artifact time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_carbon_in_pm2p5_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="qc_organic_carbon_amean_d_Artifact meta_organic_carbon_amean_d_Artifact" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2024-08-27T21:17:46.833531Z" />
    <attribute name="ebas_version_description" value="initial submision" />
    <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="IT0004R" />
    <attribute name="ebas_platform_code" value="IT0004S" />
    <attribute name="ebas_station_name" value="Ispra" />
    <attribute name="ebas_station_wdca_id" value="GAWAIT__IPR" />
    <attribute name="ebas_station_gaw_id" value="IPR" />
    <attribute name="ebas_station_gaw_name" value="Ispra" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="45.814556" />
    <attribute name="ebas_station_longitude" type="double" value="8.635722" />
    <attribute name="ebas_station_altitude" value="209.0 m" />
    <attribute name="ebas_measurement_height" value="6.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="IT04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="JRC_PM25_01" />
    <attribute name="ebas_instrument_manufacturer" value="Rupprecht&amp;Patashnick" />
    <attribute name="ebas_instrument_model" value="Partisol2025" />
    <attribute name="ebas_instrument_serial_number" value="B215620603" />
    <attribute name="ebas_analytical_laboratory_code" value="IT04L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="JRC_sunset_001" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 4L" />
    <attribute name="ebas_analytical_instrument_serial_number" value="173-5" />
    <attribute name="ebas_method_ref" value="IT04L_Denuder+Single-filter+EUSAAR_2" />
    <attribute name="ebas_standard_method" value="SOP=EN16909:2017, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5 Partisol sampling head followed by denuder" />
    <attribute name="ebas_flow_rate" value="16.7 l/min" />
    <attribute name="ebas_filter_face_velocity" value="23.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.897 cm2" />
    <attribute name="ebas_filter_description" value="Pallflex_Tissuquartz_2500QAT-UP" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="Not prefired" />
    <attribute name="ebas_filter_conditioning" value="293.0 K, 20.0 %RH, 24.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="Positive and negative" />
    <attribute name="ebas_artifact_correction_description" value="Negative sampling artifacts estimated from literature/campaign data (mean negative artifact = 5.3%), as was the positive artifact not accounted for by the denuder (mean positive artifact not accounted for by the denuder = 4.7%)." />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Loaded filter kept at ambient temperature +/- 5K" />
    <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 + instrument uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured and flagged as below detection limit" />
    <attribute name="ebas_organization" value="IT04L, EC Joint Research Centre, EC-JRC-IES, Institute for Environment and Sustainability, Via Enrico Fermi 2749, , 21027, Ispra, Italy" />
    <attribute name="ebas_framework_acronym" value="" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="" />
    <attribute name="ebas_framework_contact_email" value="" />
    <attribute name="ebas_originator" value="&quot;Cavalli, Fabrizia, fabrizia.cavalli@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;, &quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="ebas_submitter" value="&quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticleorganiccarbonmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle organic carbon mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/PM2.5" />
    <attribute name="actris_matrix_preferred_term" value="PM2.5" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedascarbon" />
    <attribute name="actris_constraints_preferred_term" value="expressed as carbon" />
    <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/lowvolumesampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume sampler" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_organic_carbon_amean_d_Artifact" shape="d_Artifact qc_organic_carbon_amean_d_Artifact_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_organic_carbon_amean_d_Artifact" shape="d_Artifact metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_organic_carbon_uncertainty_d_Artifact" shape="d_Artifact time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_carbon_in_pm2p5_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="qc_organic_carbon_uncertainty_d_Artifact meta_organic_carbon_uncertainty_d_Artifact" />
    <attribute name="cell_methods" value="time: uncertainty" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2024-08-27T21:17:46.833531Z" />
    <attribute name="ebas_version_description" value="initial submision" />
    <attribute name="ebas_statistics" value="uncertainty" />
    <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="IT0004R" />
    <attribute name="ebas_platform_code" value="IT0004S" />
    <attribute name="ebas_station_name" value="Ispra" />
    <attribute name="ebas_station_wdca_id" value="GAWAIT__IPR" />
    <attribute name="ebas_station_gaw_id" value="IPR" />
    <attribute name="ebas_station_gaw_name" value="Ispra" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="45.814556" />
    <attribute name="ebas_station_longitude" type="double" value="8.635722" />
    <attribute name="ebas_station_altitude" value="209.0 m" />
    <attribute name="ebas_measurement_height" value="6.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="IT04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="JRC_PM25_01" />
    <attribute name="ebas_instrument_manufacturer" value="Rupprecht&amp;Patashnick" />
    <attribute name="ebas_instrument_model" value="Partisol2025" />
    <attribute name="ebas_instrument_serial_number" value="B215620603" />
    <attribute name="ebas_analytical_laboratory_code" value="IT04L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="JRC_sunset_001" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 4L" />
    <attribute name="ebas_analytical_instrument_serial_number" value="173-5" />
    <attribute name="ebas_method_ref" value="IT04L_Denuder+Single-filter+EUSAAR_2" />
    <attribute name="ebas_standard_method" value="SOP=EN16909:2017, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5 Partisol sampling head followed by denuder" />
    <attribute name="ebas_flow_rate" value="16.7 l/min" />
    <attribute name="ebas_filter_face_velocity" value="23.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.897 cm2" />
    <attribute name="ebas_filter_description" value="Pallflex_Tissuquartz_2500QAT-UP" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="Not prefired" />
    <attribute name="ebas_filter_conditioning" value="293.0 K, 20.0 %RH, 24.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="Positive and negative" />
    <attribute name="ebas_artifact_correction_description" value="Negative sampling artifacts estimated from literature/campaign data (mean negative artifact = 5.3%), as was the positive artifact not accounted for by the denuder (mean positive artifact not accounted for by the denuder = 4.7%)." />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Loaded filter kept at ambient temperature +/- 5K" />
    <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 + instrument uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured and flagged as below detection limit" />
    <attribute name="ebas_organization" value="IT04L, EC Joint Research Centre, EC-JRC-IES, Institute for Environment and Sustainability, Via Enrico Fermi 2749, , 21027, Ispra, Italy" />
    <attribute name="ebas_framework_acronym" value="" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="" />
    <attribute name="ebas_framework_contact_email" value="" />
    <attribute name="ebas_originator" value="&quot;Cavalli, Fabrizia, fabrizia.cavalli@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;, &quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="ebas_submitter" value="&quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticleorganiccarbonmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle organic carbon mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/PM2.5" />
    <attribute name="actris_matrix_preferred_term" value="PM2.5" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedascarbon" />
    <attribute name="actris_constraints_preferred_term" value="expressed as carbon" />
    <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/lowvolumesampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume sampler" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_organic_carbon_uncertainty_d_Artifact" shape="d_Artifact qc_organic_carbon_uncertainty_d_Artifact_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_organic_carbon_uncertainty_d_Artifact" shape="d_Artifact metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_organic_carbon_amean_d_Fraction" shape="d_Fraction time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_carbon_in_pm2p5_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="qc_organic_carbon_amean_d_Fraction meta_organic_carbon_amean_d_Fraction" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2024-08-27T21:17:46.833531Z" />
    <attribute name="ebas_version_description" value="initial submision" />
    <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="IT0004R" />
    <attribute name="ebas_platform_code" value="IT0004S" />
    <attribute name="ebas_station_name" value="Ispra" />
    <attribute name="ebas_station_wdca_id" value="GAWAIT__IPR" />
    <attribute name="ebas_station_gaw_id" value="IPR" />
    <attribute name="ebas_station_gaw_name" value="Ispra" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="45.814556" />
    <attribute name="ebas_station_longitude" type="double" value="8.635722" />
    <attribute name="ebas_station_altitude" value="209.0 m" />
    <attribute name="ebas_measurement_height" value="6.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="IT04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="JRC_PM25_01" />
    <attribute name="ebas_instrument_manufacturer" value="Rupprecht&amp;Patashnick" />
    <attribute name="ebas_instrument_model" value="Partisol2025" />
    <attribute name="ebas_instrument_serial_number" value="B215620603" />
    <attribute name="ebas_analytical_laboratory_code" value="IT04L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="JRC_sunset_001" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 4L" />
    <attribute name="ebas_analytical_instrument_serial_number" value="173-5" />
    <attribute name="ebas_method_ref" value="IT04L_Denuder+Single-filter+EUSAAR_2" />
    <attribute name="ebas_standard_method" value="SOP=EN16909:2017, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5 Partisol sampling head followed by denuder" />
    <attribute name="ebas_flow_rate" value="16.7 l/min" />
    <attribute name="ebas_filter_face_velocity" value="23.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.897 cm2" />
    <attribute name="ebas_filter_description" value="Pallflex_Tissuquartz_2500QAT-UP" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="Not prefired" />
    <attribute name="ebas_filter_conditioning" value="293.0 K, 20.0 %RH, 24.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="Positive and negative" />
    <attribute name="ebas_artifact_correction_description" value="Negative sampling artifacts estimated from literature/campaign data (mean negative artifact = 5.3%), as was the positive artifact not accounted for by the denuder (mean positive artifact not accounted for by the denuder = 4.7%)." />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Loaded filter kept at ambient temperature +/- 5K" />
    <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 + instrument uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured and flagged as below detection limit" />
    <attribute name="ebas_organization" value="IT04L, EC Joint Research Centre, EC-JRC-IES, Institute for Environment and Sustainability, Via Enrico Fermi 2749, , 21027, Ispra, Italy" />
    <attribute name="ebas_framework_acronym" value="" />
    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="" />
    <attribute name="ebas_framework_contact_email" value="" />
    <attribute name="ebas_originator" value="&quot;Cavalli, Fabrizia, fabrizia.cavalli@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;, &quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="ebas_submitter" value="&quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticleorganiccarbonmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle organic carbon mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/PM2.5" />
    <attribute name="actris_matrix_preferred_term" value="PM2.5" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedascarbon" />
    <attribute name="actris_constraints_preferred_term" value="expressed as carbon" />
    <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/lowvolumesampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume sampler" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_organic_carbon_amean_d_Fraction" shape="d_Fraction qc_organic_carbon_amean_d_Fraction_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_organic_carbon_amean_d_Fraction" shape="d_Fraction metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_total_carbon_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_total_carbon_in_pm2p5_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="qc_total_carbon_amean meta_total_carbon_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2024-08-27T21:17:46.833531Z" />
    <attribute name="ebas_version_description" value="initial submision" />
    <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="IT0004R" />
    <attribute name="ebas_platform_code" value="IT0004S" />
    <attribute name="ebas_station_name" value="Ispra" />
    <attribute name="ebas_station_wdca_id" value="GAWAIT__IPR" />
    <attribute name="ebas_station_gaw_id" value="IPR" />
    <attribute name="ebas_station_gaw_name" value="Ispra" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="45.814556" />
    <attribute name="ebas_station_longitude" type="double" value="8.635722" />
    <attribute name="ebas_station_altitude" value="209.0 m" />
    <attribute name="ebas_measurement_height" value="6.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="total_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="IT04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="JRC_PM25_01" />
    <attribute name="ebas_instrument_manufacturer" value="Rupprecht&amp;Patashnick" />
    <attribute name="ebas_instrument_model" value="Partisol2025" />
    <attribute name="ebas_instrument_serial_number" value="B215620603" />
    <attribute name="ebas_analytical_laboratory_code" value="IT04L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="JRC_sunset_001" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 4L" />
    <attribute name="ebas_analytical_instrument_serial_number" value="173-5" />
    <attribute name="ebas_method_ref" value="IT04L_Denuder+Single-filter+EUSAAR_2" />
    <attribute name="ebas_standard_method" value="SOP=EN16909:2017, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5 Partisol sampling head followed by denuder" />
    <attribute name="ebas_flow_rate" value="16.7 l/min" />
    <attribute name="ebas_filter_face_velocity" value="23.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.897 cm2" />
    <attribute name="ebas_filter_description" value="Pallflex_Tissuquartz_2500QAT-UP" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="Not prefired" />
    <attribute name="ebas_filter_conditioning" value="293.0 K, 20.0 %RH, 24.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="Positive and negative" />
    <attribute name="ebas_artifact_correction_description" value="Negative sampling artifacts estimated from literature/campaign data (mean negative artifact = 5.3%), as was the positive artifact not accounted for by the denuder (mean positive artifact not accounted for by the denuder = 4.7%)." />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Loaded filter kept at ambient temperature +/- 5K" />
    <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 + instrument uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured and flagged as below detection limit" />
    <attribute name="ebas_organization" value="IT04L, EC Joint Research Centre, EC-JRC-IES, Institute for Environment and Sustainability, Via Enrico Fermi 2749, , 21027, Ispra, Italy" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, European Monitoring and Evaluation Programme, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Cavalli, Fabrizia, fabrizia.cavalli@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;, &quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="ebas_submitter" value="&quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&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: ACTRIS, EMEP, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticletotalcarbonmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle total carbon mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/PM2.5" />
    <attribute name="actris_matrix_preferred_term" value="PM2.5" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedascarbon" />
    <attribute name="actris_constraints_preferred_term" value="expressed as carbon" />
    <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/lowvolumesampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume sampler" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCA" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, EMEP, GAW-WDCA" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_total_carbon_amean" shape="qc_total_carbon_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_total_carbon_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_total_carbon_uncertainty" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_total_carbon_in_pm2p5_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="qc_total_carbon_uncertainty meta_total_carbon_uncertainty" />
    <attribute name="cell_methods" value="time: uncertainty" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2024-08-27T21:17:46.833531Z" />
    <attribute name="ebas_version_description" value="initial submision" />
    <attribute name="ebas_statistics" value="uncertainty" />
    <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="IT0004R" />
    <attribute name="ebas_platform_code" value="IT0004S" />
    <attribute name="ebas_station_name" value="Ispra" />
    <attribute name="ebas_station_wdca_id" value="GAWAIT__IPR" />
    <attribute name="ebas_station_gaw_id" value="IPR" />
    <attribute name="ebas_station_gaw_name" value="Ispra" />
    <attribute name="ebas_station_land_use" value="Other" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="45.814556" />
    <attribute name="ebas_station_longitude" type="double" value="8.635722" />
    <attribute name="ebas_station_altitude" value="209.0 m" />
    <attribute name="ebas_measurement_height" value="6.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="total_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="IT04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="JRC_PM25_01" />
    <attribute name="ebas_instrument_manufacturer" value="Rupprecht&amp;Patashnick" />
    <attribute name="ebas_instrument_model" value="Partisol2025" />
    <attribute name="ebas_instrument_serial_number" value="B215620603" />
    <attribute name="ebas_analytical_laboratory_code" value="IT04L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="JRC_sunset_001" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 4L" />
    <attribute name="ebas_analytical_instrument_serial_number" value="173-5" />
    <attribute name="ebas_method_ref" value="IT04L_Denuder+Single-filter+EUSAAR_2" />
    <attribute name="ebas_standard_method" value="SOP=EN16909:2017, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5 Partisol sampling head followed by denuder" />
    <attribute name="ebas_flow_rate" value="16.7 l/min" />
    <attribute name="ebas_filter_face_velocity" value="23.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.897 cm2" />
    <attribute name="ebas_filter_description" value="Pallflex_Tissuquartz_2500QAT-UP" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="Not prefired" />
    <attribute name="ebas_filter_conditioning" value="293.0 K, 20.0 %RH, 24.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="Positive and negative" />
    <attribute name="ebas_artifact_correction_description" value="Negative sampling artifacts estimated from literature/campaign data (mean negative artifact = 5.3%), as was the positive artifact not accounted for by the denuder (mean positive artifact not accounted for by the denuder = 4.7%)." />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Loaded filter kept at ambient temperature +/- 5K" />
    <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 + instrument uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured and flagged as below detection limit" />
    <attribute name="ebas_organization" value="IT04L, EC Joint Research Centre, EC-JRC-IES, Institute for Environment and Sustainability, Via Enrico Fermi 2749, , 21027, Ispra, Italy" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, European Monitoring and Evaluation Programme, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Cavalli, Fabrizia, fabrizia.cavalli@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;, &quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&quot;" />
    <attribute name="ebas_submitter" value="&quot;Putaud, JP, jean.putaud@ec.europa.eu, EC Joint Research Centre, EC-JRC, , Via Enrico Fermi 2749, , 21027, Ispra, Italy&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: ACTRIS, EMEP, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticletotalcarbonmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle total carbon mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/PM2.5" />
    <attribute name="actris_matrix_preferred_term" value="PM2.5" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedascarbon" />
    <attribute name="actris_constraints_preferred_term" value="expressed as carbon" />
    <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/lowvolumesampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume sampler" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCA" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, EMEP, GAW-WDCA" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_total_carbon_uncertainty" shape="qc_total_carbon_uncertainty_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_total_carbon_uncertainty" 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>
  <variable name="d_Artifact" shape="d_Artifact" type="String" />
  <variable name="d_Fraction" shape="d_Fraction" type="String" />
</netcdf>
