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  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Inorganics in air and particle phase, methanesulfonic_acid and organic tracers at Barcelona (Palau Reial)" />
  <attribute name="keywords" value="azelaic_acid, chloride, adonitol, citric_acid, glutaric_acid, oxalic_acid, CAMPAIGN, maleic_acid, 4-hydroxybenzoic_acid, mass_concentration_of_sulphate_total_in_pm10_in_air, maltose, ammonium, pimelic_acid, tartaric_acid, malonic_acid, pyruvic_acid, 3-MBTCA, succinic_acid, citraconic_acid, magnesium, mannose, sodium, pm10, mannitol, glycolic_acid, calcium, rhamnose, mass_concentration_of_calcium_in_pm10_in_air, suberic_acid, benzoic_acid, cis-pinonic_acid, fructose, levoglucosan, Barcelona (Palau Reial), phthalic_acid, potassium, arabitol, glyoxylic_acid, 4-methylphthalic_acid, ES0019U, nitrate, sorbitol, 2-ketobutyric_acid, inositol, mass_concentration_of_magnesium_in_pm10_in_air, 4-oxoheptanoic_acid, EMEP, lactose, melezitose, mass_concentration_of_ammonium_in_pm10_in_air, glucose, lactic_acid, sum_2-methyltetrols, mass_concentration_of_levoglucosan_in_pm10_in_air, 3-hydroxybutyric_acid, pinic_acid, sulphate_total, mass_concentration_of_potassium_in_pm10_in_air, mass_concentration_of_methanesulfonic_acid_in_pm10_in_air, mass_concentration_of_nitrate_in_pm10_in_air, gluconic_acid, methanesulfonic_acid, adipic_acid, mass_concentration_of_chloride_in_pm10_in_air, malic_acid, sucrose, sebacic_acid, caproic_acid, mass_concentration_of_sodium_in_pm10_in_air" />
  <attribute name="id" value="8BWB-3Q5Z.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="CAMPAIGN, EMEP" />
  <attribute name="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: CAMPAIGN, EMEP." />
  <attribute name="doi" value="https://doi.org/10.48597/8BWB-3Q5Z" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Jaffrezo, J., Perez, N., CAMPAIGN, EMEP, 2024, Inorganics in air and particle phase, methanesulfonic_acid and organic tracers at Barcelona (Palau Reial), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/8BWB-3Q5Z" />
  <attribute name="summary" value="Inorganics in air and particle phase, methanesulfonic_acid and organic tracers at Barcelona (Palau Reial). These measurements are gathered as a part of the following projects CAMPAIGN, EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: 2-ketobutyric_acid in pm10, 3-MBTCA in pm10, 3-hydroxybutyric_acid in pm10, 4-hydroxybenzoic_acid in pm10, 4-methylphthalic_acid in pm10, 4-oxoheptanoic_acid in pm10, adipic_acid in pm10, adonitol in pm10, ammonium in pm10 (mass_concentration_of_ammonium_in_pm10_in_air), ammonium in pm10 (mass_concentration_of_ammonium_in_pm10_in_air), arabitol in pm10, azelaic_acid in pm10, benzoic_acid in pm10, calcium in pm10 (mass_concentration_of_calcium_in_pm10_in_air), caproic_acid in pm10, chloride in pm10 (mass_concentration_of_chloride_in_pm10_in_air), cis-pinonic_acid in pm10, citraconic_acid in pm10, citric_acid in pm10, fructose in pm10, gluconic_acid in pm10, glucose in pm10, glutaric_acid in pm10, glycolic_acid in pm10, glyoxylic_acid in pm10, inositol in pm10, lactic_acid in pm10, lactose in pm10, levoglucosan in pm10 (mass_concentration_of_levoglucosan_in_pm10_in_air), magnesium in pm10 (mass_concentration_of_magnesium_in_pm10_in_air), maleic_acid in pm10, malic_acid in pm10, malonic_acid in pm10, maltose in pm10, mannitol in pm10, mannose in pm10, melezitose in pm10, methanesulfonic_acid in pm10 (mass_concentration_of_methanesulfonic_acid_in_pm10_in_air), nitrate in pm10 (mass_concentration_of_nitrate_in_pm10_in_air), nitrate in pm10 (mass_concentration_of_nitrate_in_pm10_in_air), oxalic_acid in pm10, phthalic_acid in pm10, pimelic_acid in pm10, pinic_acid in pm10, potassium in pm10 (mass_concentration_of_potassium_in_pm10_in_air), pyruvic_acid in pm10, rhamnose in pm10, sebacic_acid in pm10, sodium in pm10 (mass_concentration_of_sodium_in_pm10_in_air), sorbitol in pm10, suberic_acid in pm10, succinic_acid in pm10, sucrose in pm10, sulphate_total in pm10 (mass_concentration_of_sulphate_total_in_pm10_in_air), sulphate_total in pm10 (mass_concentration_of_sulphate_total_in_pm10_in_air), sum_2-methyltetrols in pm10, tartaric_acid in pm10" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="ES05L, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Jordi Girona 18-26, 08034, Barcelona, Spain" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2024-05-30T00:00:00 UTC" />
  <attribute name="date_metadata_modified" value="2024-05-30T00:00:00 UTC" />
  <attribute name="creator_name" value="Jean Luc Jaffrezo, Noemi Perez" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, " />
  <attribute name="creator_institution" value="&quot;Laboratoire de Glaciologie et Geophysique de lEnvironnement, Laboratoire daerologie, LGGE&quot;, " />
  <attribute name="contributor_name" value="Jean Luc Jaffrezo" />
  <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 (41.387463 2.11532 80.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="41.387463" />
  <attribute name="geospatial_lat_max" type="double" value="41.387463" />
  <attribute name="geospatial_lon_min" type="double" value="2.11532" />
  <attribute name="geospatial_lon_max" type="double" value="2.11532" />
  <attribute name="geospatial_vertical_min" type="double" value="80.0" />
  <attribute name="geospatial_vertical_max" type="double" value="80.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2022-07-12T00:00:00 UTC" />
  <attribute name="time_coverage_end" value="2022-07-20T00:00:00 UTC" />
  <attribute name="time_coverage_duration" value="P0000-00-08T00:00:00" />
  <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="Jaffrezo, J., Perez, N., CAMPAIGN, EMEP, 2024, Inorganics in air and particle phase, methanesulfonic_acid and organic tracers at Barcelona (Palau Reial), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/8BWB-3Q5Z" />
  <attribute name="ebas_set_type_code" value="TU" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="8BWB-3Q5Z.nc" />
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  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/8BWB-3Q5Z" />
  <attribute name="ebas_file_creation" value="2025-02-12T21:37:27.178004 UTC" />
  <attribute name="ebas_export_state" value="2025-02-12T10:45:41.316202 UTC" />
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  <attribute name="ebas_startdate" value="20220712000000" />
  <attribute name="ebas_revision_date" value="20240530000000" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="initial revision" />
  <attribute name="ebas_statistics" value="arithmetic mean" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="8d" />
  <attribute name="ebas_resolution_code" value="1d" />
  <attribute name="ebas_sample_duration" value="1d" />
  <attribute name="ebas_station_code" value="ES0019U" />
  <attribute name="ebas_platform_code" value="ES0019S" />
  <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
  <attribute name="ebas_station_land_use" value="Urban park" />
  <attribute name="ebas_station_setting" value="Urban and center city" />
  <attribute name="ebas_station_latitude" value="41.387463" />
  <attribute name="ebas_station_longitude" value="2.11532" />
  <attribute name="ebas_station_altitude" value="80.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_matrix" value="pm10" />
  <attribute name="ebas_laboratory_code" value="ES05L" />
  <attribute name="ebas_instrument_type" value="high_vol_sampler" />
  <attribute name="ebas_instrument_name" value="hvs_es0019" />
  <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
  <attribute name="ebas_instrument_model" value="DHA-80" />
  <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
  <attribute name="ebas_method_ref" value="FR18L_tracers_IMP2022" />
  <attribute name="ebas_inlet_type" value="Impactor--direct" />
  <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
  <attribute name="ebas_flow_rate" value="500.0 l/min" />
  <attribute name="ebas_filter_face_velocity" value="54.1 cm/s" />
  <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
  <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
  <attribute name="ebas_medium" value="Quartz" />
  <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
  <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
  <attribute name="ebas_blank_correction" value="Blank corrected" />
  <attribute name="ebas_artifact_correction" value="None" />
  <attribute name="ebas_volume_std_temperature" value="ambient" />
  <attribute name="ebas_volume_std_pressure" value="ambient" />
  <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
  <attribute name="ebas_organization" value="ES05L, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, , Jordi Girona 18-26, , 08034, Barcelona, Spain" />
  <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
  <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
  <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
  <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
  <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
  <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
  <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
  <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: CAMPAIGN, EMEP." />
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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="comment" value="{&#xA;    &quot;Data definition&quot;: &quot;EBAS_1.1&quot;,&#xA;    &quot;Data license&quot;: &quot;https://creativecommons.org/licenses/by/4.0/&quot;,&#xA;    &quot;Citation&quot;: &quot;Jaffrezo, J., Perez, N., CAMPAIGN, EMEP, 2024, Inorganics in air and particle phase, methanesulfonic_acid and organic tracers at Barcelona (Palau Reial), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/8BWB-3Q5Z&quot;,&#xA;    &quot;Set type code&quot;: &quot;TU&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;8BWB-3Q5Z.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/8BWB-3Q5Z&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/8BWB-3Q5Z&quot;,&#xA;    &quot;File creation&quot;: &quot;2025-02-12T21:37:27.178004 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2025-02-12T10:45:41.316202 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20220712000000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20240530000000&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;initial revision&quot;,&#xA;    &quot;Statistics&quot;: &quot;arithmetic mean&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;8d&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1d&quot;,&#xA;    &quot;Sample duration&quot;: &quot;1d&quot;,&#xA;    &quot;Station code&quot;: &quot;ES0019U&quot;,&#xA;    &quot;Platform code&quot;: &quot;ES0019S&quot;,&#xA;    &quot;Station name&quot;: &quot;Barcelona (Palau Reial)&quot;,&#xA;    &quot;Station land use&quot;: &quot;Urban park&quot;,&#xA;    &quot;Station setting&quot;: &quot;Urban and center city&quot;,&#xA;    &quot;Station latitude&quot;: &quot;41.387463&quot;,&#xA;    &quot;Station longitude&quot;: &quot;2.11532&quot;,&#xA;    &quot;Station altitude&quot;: &quot;80.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Matrix&quot;: &quot;pm10&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;ES05L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;high_vol_sampler&quot;,&#xA;    &quot;Instrument name&quot;: &quot;hvs_es0019&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;DIGITEL&quot;,&#xA;    &quot;Instrument model&quot;: &quot;DHA-80&quot;,&#xA;    &quot;Analytical laboratory code&quot;: &quot;FR18L&quot;,&#xA;    &quot;Method ref&quot;: &quot;FR18L_tracers_IMP2022&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Impactor--direct&quot;,&#xA;    &quot;Inlet description&quot;: &quot;Upward facing with rain shield&quot;,&#xA;    &quot;Flow rate&quot;: &quot;500.0 l/min&quot;,&#xA;    &quot;Filter face velocity&quot;: &quot;54.1 cm/s&quot;,&#xA;    &quot;Exposed filter area&quot;: &quot;153.94 cm2&quot;,&#xA;    &quot;Filter description&quot;: &quot;Pall Tissuquartz 2500QAT-UP 150mm&quot;,&#xA;    &quot;Medium&quot;: &quot;Quartz&quot;,&#xA;    &quot;Filter prefiring&quot;: &quot;473.15 K, 4.0 h&quot;,&#xA;    &quot;Filter conditioning&quot;: &quot;293.15 K, 50.0 %RH, 48.0 h&quot;,&#xA;    &quot;Blank correction&quot;: &quot;Blank corrected&quot;,&#xA;    &quot;Artifact correction&quot;: &quot;None&quot;,&#xA;    &quot;Volume std. temperature&quot;: &quot;ambient&quot;,&#xA;    &quot;Volume std. pressure&quot;: &quot;ambient&quot;,&#xA;    &quot;Zero/negative values code&quot;: &quot;Zero/negative impossible&quot;,&#xA;    &quot;Organization&quot;: &quot;ES05L, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, , Jordi Girona 18-26, , 08034, Barcelona, Spain&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;CAMPAIGN, EMEP&quot;,&#xA;    &quot;Framework name&quot;: &quot;, European Monitoring and Evaluation Programme&quot;,&#xA;    &quot;Framework description&quot;: &quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems.&quot;,&#xA;    &quot;Framework contact name&quot;: &quot;Wenche Aas, Kjetil Tørseth&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;waa@nilu.no, kt@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Perez, Noemi, , , , , , , , , &quot;,&#xA;    &quot;Submitter&quot;: &quot;Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France&quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;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: CAMPAIGN, EMEP.&quot;&#xA;}" />
  <attribute name="standard_name_vocabulary" value="CF-1.7, ACDD-1.3" />
  <attribute name="history" value="None" />
  <attribute name="creator_url" value="ebas.nilu.no" />
  <attribute name="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="time" length="8" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="2-ketobutyric_acid_qc_flags" length="1" />
  <dimension name="3-MBTCA_qc_flags" length="1" />
  <dimension name="3-hydroxybutyric_acid_qc_flags" length="1" />
  <dimension name="4-hydroxybenzoic_acid_qc_flags" length="1" />
  <dimension name="4-methylphthalic_acid_qc_flags" length="1" />
  <dimension name="4-oxoheptanoic_acid_qc_flags" length="1" />
  <dimension name="adipic_acid_qc_flags" length="1" />
  <dimension name="adonitol_qc_flags" length="1" />
  <dimension name="ammonium_ug_N_per_m3_qc_flags" length="1" />
  <dimension name="ammonium_ug_per_m3_qc_flags" length="1" />
  <dimension name="arabitol_qc_flags" length="1" />
  <dimension name="azelaic_acid_qc_flags" length="1" />
  <dimension name="benzoic_acid_qc_flags" length="1" />
  <dimension name="calcium_qc_flags" length="1" />
  <dimension name="caproic_acid_qc_flags" length="1" />
  <dimension name="chloride_qc_flags" length="1" />
  <dimension name="cis-pinonic_acid_qc_flags" length="1" />
  <dimension name="citraconic_acid_qc_flags" length="1" />
  <dimension name="citric_acid_qc_flags" length="1" />
  <dimension name="fructose_qc_flags" length="1" />
  <dimension name="gluconic_acid_qc_flags" length="1" />
  <dimension name="glucose_qc_flags" length="1" />
  <dimension name="glutaric_acid_qc_flags" length="1" />
  <dimension name="glycolic_acid_qc_flags" length="1" />
  <dimension name="glyoxylic_acid_qc_flags" length="1" />
  <dimension name="inositol_qc_flags" length="1" />
  <dimension name="lactic_acid_qc_flags" length="1" />
  <dimension name="lactose_qc_flags" length="1" />
  <dimension name="levoglucosan_qc_flags" length="1" />
  <dimension name="magnesium_qc_flags" length="1" />
  <dimension name="maleic_acid_qc_flags" length="1" />
  <dimension name="malic_acid_qc_flags" length="1" />
  <dimension name="malonic_acid_qc_flags" length="1" />
  <dimension name="maltose_qc_flags" length="1" />
  <dimension name="mannitol_qc_flags" length="1" />
  <dimension name="mannose_qc_flags" length="1" />
  <dimension name="melezitose_qc_flags" length="1" />
  <dimension name="methanesulfonic_acid_qc_flags" length="1" />
  <dimension name="nitrate_ug_N_per_m3_qc_flags" length="1" />
  <dimension name="nitrate_ug_per_m3_qc_flags" length="1" />
  <dimension name="oxalic_acid_qc_flags" length="1" />
  <dimension name="phthalic_acid_qc_flags" length="1" />
  <dimension name="pimelic_acid_qc_flags" length="1" />
  <dimension name="pinic_acid_qc_flags" length="1" />
  <dimension name="potassium_qc_flags" length="1" />
  <dimension name="pyruvic_acid_qc_flags" length="1" />
  <dimension name="rhamnose_qc_flags" length="1" />
  <dimension name="sebacic_acid_qc_flags" length="1" />
  <dimension name="sodium_qc_flags" length="1" />
  <dimension name="sorbitol_qc_flags" length="1" />
  <dimension name="suberic_acid_qc_flags" length="1" />
  <dimension name="succinic_acid_qc_flags" length="1" />
  <dimension name="sucrose_qc_flags" length="1" />
  <dimension name="sulphate_total_ug_S_per_m3_qc_flags" length="1" />
  <dimension name="sulphate_total_ug_per_m3_qc_flags" length="1" />
  <dimension name="sum_2-methyltetrols_qc_flags" length="1" />
  <dimension name="tartaric_acid_qc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2022-07-12T12:00:00Z" />
    <attribute name="time_coverage_end" value="2022-07-19T12:00:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="86400.0" />
    <attribute name="time_coverage_duration" value="P0Y0M7DT0H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-05-14" />
    <attribute name="nciso_version" value="2.4.7" />
  </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="2-ketobutyric_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="2-ketobutyric_acid_qc 2-ketobutyric_acid_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
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    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
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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="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="adipic_acid" />
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    <attribute name="ancillary_variables" value="ammonium_ug_per_m3_qc ammonium_ug_per_m3_ebasmetadata" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
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    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="ammonium" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
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    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
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    <attribute name="ebas_medium" value="Quartz" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
    <attribute name="ebas_comment" value="Data converted on export from EBAS from 'ug N/m3' to 'ug/m3', conversion factor 1.2879." />
  </variable>
  <variable name="ammonium_ug_per_m3_qc" shape="ammonium_ug_per_m3_qc_flags time" type="int">
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  </variable>
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="arabitol_qc arabitol_ebasmetadata" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
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    <attribute name="ebas_version_description" value="initial revision" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="arabitol" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_analytical_measurement_technique" value="UHPLC-MS/MS" />
    <attribute name="ebas_analytical_instrument_name" value="Sciex_5500_QTRAP" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_volume_std_temperature" value="ambient" />
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    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="arabitol_qc" shape="arabitol_qc_flags time" type="int">
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="azelaic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_platform_code" value="ES0019S" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="azelaic_acid" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="azelaic_acid_qc" shape="azelaic_acid_qc_flags time" type="int">
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="benzoic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_latitude" value="41.387463" />
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    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzoic_acid" />
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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: CAMPAIGN, EMEP." />
  </variable>
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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="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="calcium" />
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    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_organization" value="ES05L, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, , Jordi Girona 18-26, , 08034, Barcelona, Spain" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="calcium_qc" shape="calcium_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="calcium_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="caproic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="caproic_acid_qc caproic_acid_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="caproic_acid" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
    <attribute name="ebas_instrument_model" value="DHA-80" />
    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
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    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
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    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="caproic_acid_qc" shape="caproic_acid_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="caproic_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="chloride" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_chloride_in_pm10_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="chloride_qc chloride_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
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    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="chloride" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
    <attribute name="ebas_instrument_model" value="DHA-80" />
    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
    <attribute name="ebas_method_ref" value="FR18L_tracers_IMP2022" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="500.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="54.1 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="chloride_qc" shape="chloride_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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  </variable>
  <variable name="chloride_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="cis-pinonic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="cis-pinonic_acid" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="pm10" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
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    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
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    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
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    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="cis-pinonic_acid_qc" shape="cis-pinonic_acid_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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  <variable name="cis-pinonic_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="citraconic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/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="initial revision" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_code" value="ES0019U" />
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    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="citraconic_acid" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
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    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
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    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="citraconic_acid_qc" shape="citraconic_acid_qc_flags time" type="int">
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  </variable>
  <variable name="citraconic_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="citric_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="citric_acid_qc citric_acid_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="citric_acid" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
    <attribute name="ebas_instrument_model" value="DHA-80" />
    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
    <attribute name="ebas_method_ref" value="FR18L_tracers_IMP2022" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="500.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="54.1 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_organization" value="ES05L, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, , Jordi Girona 18-26, , 08034, Barcelona, Spain" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="citric_acid_qc" shape="citric_acid_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="citric_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="fructose" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="fructose_qc fructose_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="fructose" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
    <attribute name="ebas_instrument_model" value="DHA-80" />
    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="UHPLC-MS/MS" />
    <attribute name="ebas_analytical_instrument_name" value="Sciex_5500_QTRAP" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sciex" />
    <attribute name="ebas_analytical_instrument_model" value="5500 QTRAP" />
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    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
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    <attribute name="ebas_filter_face_velocity" value="54.1 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="fructose_qc" shape="fructose_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="fructose_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="gluconic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="gluconic_acid_qc gluconic_acid_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
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    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="gluconic_acid" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
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    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="500.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="54.1 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="gluconic_acid_qc" shape="gluconic_acid_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="gluconic_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="glucose" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="glucose_qc glucose_ebasmetadata" />
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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="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="glucose" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="UHPLC-MS/MS" />
    <attribute name="ebas_analytical_instrument_name" value="Sciex_5500_QTRAP" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sciex" />
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    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
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    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="glucose_qc" shape="glucose_qc_flags time" type="int">
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  </variable>
  <variable name="glucose_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="glutaric_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="glutaric_acid_qc glutaric_acid_ebasmetadata" />
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    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="glutaric_acid" />
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    <attribute name="ebas_laboratory_code" value="ES05L" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
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    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
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    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_organization" value="ES05L, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, , Jordi Girona 18-26, , 08034, Barcelona, Spain" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="glutaric_acid_qc" shape="glutaric_acid_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="glutaric_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="glycolic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="glycolic_acid_qc glycolic_acid_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="glycolic_acid" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
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    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="500.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="54.1 cm/s" />
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    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="glycolic_acid_qc" shape="glycolic_acid_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="glycolic_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="glyoxylic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="glyoxylic_acid_qc glyoxylic_acid_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="glyoxylic_acid" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
    <attribute name="ebas_instrument_model" value="DHA-80" />
    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
    <attribute name="ebas_method_ref" value="FR18L_tracers_IMP2022" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="500.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="54.1 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="glyoxylic_acid_qc" shape="glyoxylic_acid_qc_flags time" type="int">
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  </variable>
  <variable name="glyoxylic_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="inositol" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
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    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="inositol" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
    <attribute name="ebas_instrument_model" value="DHA-80" />
    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="UHPLC-MS/MS" />
    <attribute name="ebas_analytical_instrument_name" value="Sciex_5500_QTRAP" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sciex" />
    <attribute name="ebas_analytical_instrument_model" value="5500 QTRAP" />
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    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
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    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_volume_std_temperature" value="ambient" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="inositol_qc" shape="inositol_qc_flags time" type="int">
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="lactic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="lactic_acid_qc lactic_acid_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
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    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="lactic_acid" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
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    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="500.0 l/min" />
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    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="lactic_acid_qc" shape="lactic_acid_qc_flags time" type="int">
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  </variable>
  <variable name="lactic_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="lactose" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="lactose_qc lactose_ebasmetadata" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
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    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="lactose" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
    <attribute name="ebas_instrument_model" value="DHA-80" />
    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="UHPLC-MS/MS" />
    <attribute name="ebas_analytical_instrument_name" value="Sciex_5500_QTRAP" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sciex" />
    <attribute name="ebas_analytical_instrument_model" value="5500 QTRAP" />
    <attribute name="ebas_method_ref" value="FR18L_tracers_IMP2022" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="500.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="54.1 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_organization" value="ES05L, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, , Jordi Girona 18-26, , 08034, Barcelona, Spain" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="lactose_qc" shape="lactose_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="lactose_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="levoglucosan" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_levoglucosan_in_pm10_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="levoglucosan_qc levoglucosan_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="levoglucosan" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
    <attribute name="ebas_instrument_model" value="DHA-80" />
    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="UHPLC-MS/MS" />
    <attribute name="ebas_analytical_instrument_name" value="Sciex_5500_QTRAP" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sciex" />
    <attribute name="ebas_analytical_instrument_model" value="5500 QTRAP" />
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    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="500.0 l/min" />
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    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_organization" value="ES05L, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, , Jordi Girona 18-26, , 08034, Barcelona, Spain" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="levoglucosan_qc" shape="levoglucosan_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="levoglucosan_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="magnesium" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_magnesium_in_pm10_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="magnesium_qc magnesium_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="magnesium" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
    <attribute name="ebas_instrument_model" value="DHA-80" />
    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
    <attribute name="ebas_method_ref" value="FR18L_tracers_IMP2022" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="500.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="54.1 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="magnesium_qc" shape="magnesium_qc_flags time" type="int">
    <attribute name="units" value="1" />
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  </variable>
  <variable name="magnesium_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="maleic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/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="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="maleic_acid" />
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    <attribute name="ebas_matrix" value="pm10" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
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    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
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    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
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    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="maleic_acid_qc" shape="maleic_acid_qc_flags time" type="int">
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  </variable>
  <variable name="maleic_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="malic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="malic_acid_qc malic_acid_ebasmetadata" />
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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="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_code" value="ES0019U" />
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    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="malic_acid" />
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    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
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    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
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    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
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    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
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    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="melezitose" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_analytical_measurement_technique" value="UHPLC-MS/MS" />
    <attribute name="ebas_analytical_instrument_name" value="Sciex_5500_QTRAP" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sciex" />
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    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_volume_std_temperature" 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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="melezitose_qc" shape="melezitose_qc_flags time" type="int">
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_methanesulfonic_acid_in_pm10_in_air" />
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    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="methanesulfonic_acid" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="methanesulfonic_acid_qc" shape="methanesulfonic_acid_qc_flags time" type="int">
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="ebas_station_latitude" value="41.387463" />
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    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrate" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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  </variable>
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    <attribute name="ebas_component" value="nitrate" />
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    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_organization" value="ES05L, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, , Jordi Girona 18-26, , 08034, Barcelona, Spain" />
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    <attribute name="ebas_framework_name" value=", 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" />
    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="oxalic_acid_qc" shape="oxalic_acid_qc_flags time" type="int">
    <attribute name="units" value="1" />
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  </variable>
  <variable name="oxalic_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="phthalic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="phthalic_acid_qc phthalic_acid_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
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    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="phthalic_acid" />
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    <attribute name="ebas_matrix" value="pm10" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_volume_std_temperature" value="ambient" />
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    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="phthalic_acid_qc" shape="phthalic_acid_qc_flags time" type="int">
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  </variable>
  <variable name="phthalic_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="pimelic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/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="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pimelic_acid" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
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    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_volume_std_temperature" value="ambient" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="pimelic_acid_qc" shape="pimelic_acid_qc_flags time" type="int">
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="pinic_acid" shape="time" type="double">
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    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pinic_acid" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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  </variable>
  <variable name="pinic_acid_qc" shape="pinic_acid_qc_flags time" type="int">
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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_station_latitude" value="41.387463" />
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    <attribute name="ebas_station_altitude" value="80.0 m" />
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    <attribute name="ebas_component" value="potassium" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="potassium_qc" shape="potassium_qc_flags time" type="int">
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  <variable name="potassium_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
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    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_code" value="ES0019U" />
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    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pyruvic_acid" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_medium" value="Quartz" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
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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: CAMPAIGN, EMEP." />
  </variable>
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="rhamnose_qc rhamnose_ebasmetadata" />
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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="initial revision" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="rhamnose" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_volume_std_temperature" 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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="rhamnose_qc" shape="rhamnose_qc_flags time" type="int">
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_station_latitude" value="41.387463" />
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    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="sebacic_acid" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="sorbitol" />
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    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="sorbitol_qc" shape="sorbitol_qc_flags time" type="int">
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
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    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="suberic_acid" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="suberic_acid_qc" shape="suberic_acid_qc_flags time" type="int">
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  </variable>
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="succinic_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="succinic_acid_qc succinic_acid_ebasmetadata" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
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    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="succinic_acid" />
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    <attribute name="ebas_matrix" value="pm10" />
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    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
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    <attribute name="ebas_blank_correction" value="Blank corrected" />
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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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="succinic_acid_qc" shape="succinic_acid_qc_flags time" type="int">
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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" />
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  </variable>
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  </variable>
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    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="sulphate_total" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
    <attribute name="ebas_instrument_model" value="DHA-80" />
    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
    <attribute name="ebas_method_ref" value="FR18L_tracers_IMP2022" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="500.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="54.1 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_organization" value="ES05L, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, , Jordi Girona 18-26, , 08034, Barcelona, Spain" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
    <attribute name="ebas_comment" value="Data converted on export from EBAS from 'ug S/m3' to 'ug/m3', conversion factor 2.9962." />
  </variable>
  <variable name="sulphate_total_ug_per_m3_qc" shape="sulphate_total_ug_per_m3_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="sulphate_total_ug_per_m3_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="sum_2-methyltetrols" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="sum_2-methyltetrols_qc sum_2-methyltetrols_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="sum_2-methyltetrols" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
    <attribute name="ebas_instrument_model" value="DHA-80" />
    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="UHPLC-MS/MS" />
    <attribute name="ebas_analytical_instrument_name" value="Sciex_5500_QTRAP" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sciex" />
    <attribute name="ebas_analytical_instrument_model" value="5500 QTRAP" />
    <attribute name="ebas_method_ref" value="FR18L_tracers_IMP2022" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="500.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="54.1 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
    <attribute name="ebas_organization" value="ES05L, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, , Jordi Girona 18-26, , 08034, Barcelona, Spain" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, EMEP" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems." />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="sum_2-methyltetrols_qc" shape="sum_2-methyltetrols_qc_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="sum_2-methyltetrols_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="tartaric_acid" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="tartaric_acid_qc tartaric_acid_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20240530000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_station_code" value="ES0019U" />
    <attribute name="ebas_platform_code" value="ES0019S" />
    <attribute name="ebas_station_name" value="Barcelona (Palau Reial)" />
    <attribute name="ebas_station_land_use" value="Urban park" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_latitude" value="41.387463" />
    <attribute name="ebas_station_longitude" value="2.11532" />
    <attribute name="ebas_station_altitude" value="80.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="tartaric_acid" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="ES05L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="hvs_es0019" />
    <attribute name="ebas_instrument_manufacturer" value="DIGITEL" />
    <attribute name="ebas_instrument_model" value="DHA-80" />
    <attribute name="ebas_analytical_laboratory_code" value="FR18L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_name" value="IC-MS" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Thermo Scientific" />
    <attribute name="ebas_analytical_instrument_model" value="Integrion + ISQ EC MS" />
    <attribute name="ebas_method_ref" value="FR18L_tracers_IMP2022" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="500.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="54.1 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
    <attribute name="ebas_filter_description" value="Pall Tissuquartz 2500QAT-UP 150mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="473.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 h" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative impossible" />
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    <attribute name="ebas_framework_name" value=", 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" />
    <attribute name="ebas_originator" value="Perez, Noemi, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Jaffrezo, Jean Luc, Jean-Luc.Jaffrezo@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de lEnvironnement, LGGE, Laboratoire daerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin dHeres cedex, France" />
    <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: CAMPAIGN, EMEP." />
  </variable>
  <variable name="tartaric_acid_qc" shape="tartaric_acid_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="tartaric_acid_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="metadata_time" shape="metadata_time" type="double">
    <attribute name="long_name" value="time of ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
</netcdf>
