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  <attribute name="title" value="Heavy metals and inorganics in air and particle phase at Ulborg" />
  <attribute name="summary" value="Heavy metals and inorganics in air and particle phase at Ulborg. These measurements are gathered as a part of the following projects CAMP, EMEP and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['ammonium in aerosol (mass_concentration_of_ammonium_expressed_as_nitrogen_in_dry_aerosol_particles_in_air)', 'ammonium in aerosol (mass_concentration_of_ammonium_in_dry_aerosol_particles_in_air)', 'arsenic in aerosol (mass_concentration_of_arsenic_in_dry_aerosol_particles_in_air)', 'calcium in aerosol (mass_concentration_of_calcium_in_dry_aerosol_particles_in_air)', 'chloride in aerosol (mass_concentration_of_chloride_in_dry_aerosol_particles_in_air)', 'chromium in aerosol (mass_concentration_of_chromium_in_dry_aerosol_particles_in_air)', 'copper in aerosol (mass_concentration_of_copper_in_dry_aerosol_particles_in_air)', 'iron in aerosol (mass_concentration_of_iron_in_dry_aerosol_particles_in_air)', 'lead in aerosol (mass_concentration_of_lead_in_dry_aerosol_particles_in_air)', 'manganese in aerosol (mass_concentration_of_manganese_in_dry_aerosol_particles_in_air)', 'potassium in aerosol (mass_concentration_of_potassium_in_dry_aerosol_particles_in_air)', 'selenium in aerosol (mass_concentration_of_selenium_in_dry_aerosol_particles_in_air)', 'sodium in aerosol (mass_concentration_of_sodium_in_dry_aerosol_particles_in_air)', 'sulphate_total in aerosol (mass_concentration_of_sulphate_expressed_as_sulphur_in_dry_aerosol_particles_in_air)', 'sulphate_total in aerosol (mass_concentration_of_sulphate_in_dry_aerosol_particles_in_air)', 'sulphur_dioxide in air (mass_concentration_of_sulphur_dioxide_expressed_as_sulphur_in_air)', 'sum_nitric_acid_and_nitrate in air+aerosol (mass_concentration_of_sum_nitric_acid_and_nitrate_expressed_as_nitrogen_in_gaseous_phase_and_dry_aerosol_particles_in_air)', 'zinc in aerosol (mass_concentration_of_zinc_in_dry_aerosol_particles_in_air)']" />
  <attribute name="keywords" value="Ulborg DK0031R ammonium arsenic calcium chloride chromium copper iron lead manganese potassium selenium sodium sulphate_total sulphur_dioxide sum_nitric_acid_and_nitrate zinc aerosol air air+aerosol CAMP EMEP mass_concentration_of_ammonium_expressed_as_nitrogen_in_dry_aerosol_particles_in_air mass_concentration_of_ammonium_in_dry_aerosol_particles_in_air mass_concentration_of_arsenic_in_dry_aerosol_particles_in_air mass_concentration_of_calcium_in_dry_aerosol_particles_in_air mass_concentration_of_chloride_in_dry_aerosol_particles_in_air mass_concentration_of_chromium_in_dry_aerosol_particles_in_air mass_concentration_of_copper_in_dry_aerosol_particles_in_air mass_concentration_of_iron_in_dry_aerosol_particles_in_air mass_concentration_of_lead_in_dry_aerosol_particles_in_air mass_concentration_of_manganese_in_dry_aerosol_particles_in_air mass_concentration_of_potassium_in_dry_aerosol_particles_in_air mass_concentration_of_selenium_in_dry_aerosol_particles_in_air mass_concentration_of_sodium_in_dry_aerosol_particles_in_air mass_concentration_of_sulphate_expressed_as_sulphur_in_dry_aerosol_particles_in_air mass_concentration_of_sulphate_in_dry_aerosol_particles_in_air mass_concentration_of_sulphur_dioxide_expressed_as_sulphur_in_air mass_concentration_of_sum_nitric_acid_and_nitrate_expressed_as_nitrogen_in_gaseous_phase_and_dry_aerosol_particles_in_air mass_concentration_of_zinc_in_dry_aerosol_particles_in_air" />
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  <attribute name="project" value="CAMP, EMEP" />
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  <attribute name="doi" value="https://doi.org/10.48597/QAAB-H7ZJ" />
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  <attribute name="citation" value="Keller, R., CAMP, EMEP, 2018, Heavy metals and inorganics in air and particle phase at Ulborg, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/QAAB-H7ZJ" />
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  <attribute name="date_metadata_modified" value="2018-12-10T13:30:00Z" />
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  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
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  <attribute name="creator_url" value="ebas.nilu.no" />
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  <dimension name="qc_arsenic_flags" length="1" />
  <dimension name="qc_calcium_flags" length="1" />
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  <dimension name="qc_manganese_flags" length="1" />
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  <dimension name="qc_sodium_flags" length="1" />
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  <dimension name="qc_zinc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2009-01-01T19:00:00Z" />
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlearsenicmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle arsenic mass concentration" />
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  <variable name="qc_arsenic" shape="qc_arsenic_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_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2018-12-10T13:30:00.000000Z" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlecalciummassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle calcium mass concentration" />
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  <variable name="qc_calcium" shape="qc_calcium_flags time" type="int">
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  <variable name="meta_calcium" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_chloride_in_dry_aerosol_particles_in_air" />
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    <attribute name="ancillary_variables" value="qc_chloride meta_chloride" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2018-12-10T13:30:00.000000Z" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlechloridemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle chloride mass concentration" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="standard_name" value="mass_concentration_of_chromium_in_dry_aerosol_particles_in_air" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="standard_name" value="mass_concentration_of_lead_in_dry_aerosol_particles_in_air" />
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    <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="2018-12-10T13:30:00.000000Z" />
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    <attribute name="ebas_platform_code" value="DK0031S" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_manganese_in_dry_aerosol_particles_in_air" />
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    <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_component" value="manganese" />
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    <attribute name="ebas_matrix" value="aerosol" />
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    <attribute name="actris_variable_preferred_term" value="aerosol particle manganese mass concentration" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="standard_name" value="mass_concentration_of_potassium_in_dry_aerosol_particles_in_air" />
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    <attribute name="standard_name" value="mass_concentration_of_selenium_in_dry_aerosol_particles_in_air" />
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    <attribute name="standard_name" value="mass_concentration_of_sodium_in_dry_aerosol_particles_in_air" />
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    <attribute name="actris_variable_preferred_term" value="aerosol particle sodium mass concentration" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2018-12-10T13:30:00.000000Z" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_comment" value="Data converted on export from EBAS from 'ug S/m3' to 'ug/m3', conversion factor 2.9962." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlesulphatemassconcentration" />
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    <attribute name="standard_name" value="mass_concentration_of_sulphur_dioxide_expressed_as_sulphur_in_air" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2018-12-10T13:30:00.000000Z" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_station_code" value="DK0031R" />
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    <attribute name="ebas_station_name" value="Ulborg" />
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    <attribute name="ebas_component" value="sulphur_dioxide" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/sulfurdioxidemassconcentration" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_component" value="sum_nitric_acid_and_nitrate" />
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    <attribute name="standard_name" value="mass_concentration_of_zinc_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="qc_zinc meta_zinc" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2018-12-10T13:30:00.000000Z" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_station_code" value="DK0031R" />
    <attribute name="ebas_platform_code" value="DK0031S" />
    <attribute name="ebas_station_name" value="Ulborg" />
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    <attribute name="ebas_station_altitude" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="zinc" />
    <attribute name="ebas_unit" value="ng/m3" />
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    <attribute name="ebas_laboratory_code" value="DK01L" />
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    <attribute name="ebas_instrument_name" value="f3p_31" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlezincmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle zinc mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/lowvolumefiltersampler" />
    <attribute name="actris_instrument_type_preferred_term" value="low volume filter sampler" />
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    <attribute name="actris_framework_preferred_term" value="CAMP, EMEP" />
    <attribute name="actris_temporal_resolution" value="P1D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_zinc" shape="qc_zinc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_zinc" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="metadata_time" shape="metadata_time" type="double">
    <attribute name="long_name" value="time of ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
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</netcdf>
