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  <attribute name="title" value="1-2-3-4-tetrahydronaphthalene, 2-chloronaphthalene and PAHs (polycyclic aromatic hydrocarbons) at Alert" />
  <attribute name="summary" value="1-2-3-4-tetrahydronaphthalene, 2-chloronaphthalene and PAHs (polycyclic aromatic hydrocarbons) at Alert. These measurements are gathered as a part of the following projects AMAP_public and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['1-2-3-4-tetrahydronaphthalene in air+aerosol (mass_concentration_of_1-2-3-4-tetrahydronaphthalene_in_gaseous_phase_and_dry_aerosol_particles_in_air)', '1-methylnaphthalene in air+aerosol (mass_concentration_of_1-methylnaphthalene_in_gaseous_phase_and_dry_aerosol_particles_in_air)', '2-chloronaphthalene in air+aerosol (mass_concentration_of_2_chloronaphthalene_in_aerosol)', '2-methylnaphthalene in air+aerosol (mass_concentration_of_2_methylnaphthalene_in_aerosol)', 'acenaphthene in air+aerosol (mass_concentration_of_acenaphthene_in_aerosol)', 'acenaphthylene in air+aerosol (mass_concentration_of_acenaphthylene_in_aerosol)', 'benz_a_anthracene in air+aerosol (mass_concentration_of_benz_a_anthracene_in_aerosol)', 'benzo_a_pyrene in air+aerosol (mass_concentration_of_benzo_a_pyrene_in_aerosol)', 'benzo_b_fluoranthene in air+aerosol (mass_concentration_of_benzo_b_fluoranthene_in_aerosol)', 'benzo_e_pyrene in air+aerosol (mass_concentration_of_benzo_e_pyrene_in_aerosol)', 'benzo_ghi_perylene in air+aerosol (mass_concentration_of_benzo_ghi_perylene_in_aerosol)', 'benzo_k_fluoranthene in air+aerosol (mass_concentration_of_benzo_k_fluoranthene_in_aerosol)', 'chrysene in air+aerosol (mass_concentration_of_chrysene_in_aerosol)', 'dibenzo_ah_anthracene in air+aerosol (mass_concentration_of_dibenzo_ah_anthracene_in_aerosol)', 'dibenzothiophene in air+aerosol (mass_concentration_of_dibenzothiophene_in_aerosol)', 'fluoranthene in air+aerosol (mass_concentration_of_fluoranthene_in_aerosol)', 'fluorene in air+aerosol (mass_concentration_of_fluorene_in_aerosol)', 'inden_123cd_pyrene in air+aerosol (mass_concentration_of_inden_123cd_pyrene_in_aerosol)', 'naphthalene in air+aerosol (mass_concentration_of_naphthalene_in_aerosol)', 'perylene in air+aerosol (mass_concentration_of_perylene_in_aerosol)', 'phenanthrene in air+aerosol (mass_concentration_of_phenanthrene_in_aerosol)', 'pyrene in air+aerosol (mass_concentration_of_pyrene_in_aerosol)', 'retene in air+aerosol (mass_concentration_of_retene_in_aerosol)']" />
  <attribute name="keywords" value="Alert CA0420G 1-2-3-4-tetrahydronaphthalene 1-methylnaphthalene 2-chloronaphthalene 2-methylnaphthalene acenaphthene acenaphthylene benz_a_anthracene benzo_a_pyrene benzo_b_fluoranthene benzo_e_pyrene benzo_ghi_perylene benzo_k_fluoranthene chrysene dibenzo_ah_anthracene dibenzothiophene fluoranthene fluorene inden_123cd_pyrene naphthalene perylene phenanthrene pyrene retene air+aerosol AMAP_public mass_concentration_of_1-2-3-4-tetrahydronaphthalene_in_gaseous_phase_and_dry_aerosol_particles_in_air mass_concentration_of_1-methylnaphthalene_in_gaseous_phase_and_dry_aerosol_particles_in_air mass_concentration_of_2_chloronaphthalene_in_aerosol mass_concentration_of_2_methylnaphthalene_in_aerosol mass_concentration_of_acenaphthene_in_aerosol mass_concentration_of_acenaphthylene_in_aerosol mass_concentration_of_benz_a_anthracene_in_aerosol mass_concentration_of_benzo_a_pyrene_in_aerosol mass_concentration_of_benzo_b_fluoranthene_in_aerosol mass_concentration_of_benzo_e_pyrene_in_aerosol mass_concentration_of_benzo_ghi_perylene_in_aerosol mass_concentration_of_benzo_k_fluoranthene_in_aerosol mass_concentration_of_chrysene_in_aerosol mass_concentration_of_dibenzo_ah_anthracene_in_aerosol mass_concentration_of_dibenzothiophene_in_aerosol mass_concentration_of_fluoranthene_in_aerosol mass_concentration_of_fluorene_in_aerosol mass_concentration_of_inden_123cd_pyrene_in_aerosol mass_concentration_of_naphthalene_in_aerosol mass_concentration_of_perylene_in_aerosol mass_concentration_of_phenanthrene_in_aerosol mass_concentration_of_pyrene_in_aerosol mass_concentration_of_retene_in_aerosol" />
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  <attribute name="date_created" value="2026-01-07T11:15:35.603827Z" />
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  <attribute name="creator_name" value="Hayley Hung" />
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  <attribute name="contributor_name" value="Hayley Hung" />
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  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
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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_2_chloronaphthalene_in_aerosol" />
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    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="ebas_component" value="acenaphthylene" />
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    <attribute name="ebas_blank_correction" value="Not blank corrected" />
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    <attribute name="actris_variable_preferred_term" value="gas and particle acenaphthylene 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="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="ebas_component" value="benzo_e_pyrene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air+aerosol" />
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    <attribute name="ebas_medium" value="Glass fiber+PUF+PUF" />
    <attribute name="ebas_sample_preparation" value="Soxhlet+Hexane+13C+Silica" />
    <attribute name="ebas_blank_correction" value="Not blank corrected" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
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    <attribute name="ebas_comment" value="Analytical laboratory Freshwater Institute (FWI) changed to National Laboratory for Environmental Testing (NLET) starting in 2002" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticlebenzo-epyrenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="gas and particle benzo(e)pyrene mass concentration" />
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    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_benzo_e_pyrene" shape="qc_benzo_e_pyrene_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" />
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  <variable name="meta_benzo_e_pyrene" 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_benzo_ghi_perylene_in_aerosol" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="v_benzo_ghi_perylene_qc v_benzo_ghi_perylene_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" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1w" />
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    <attribute name="ebas_station_name" value="Alert" />
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    <attribute name="ebas_station_state_province" value="NU" />
    <attribute name="ebas_station_land_use" value="Military reservation" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="benzo_ghi_perylene" />
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    <attribute name="actris_variable_preferred_term" value="gas and particle benzo(ghi)perylene mass concentration" />
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  <variable name="qc_benzo_ghi_perylene" shape="qc_benzo_ghi_perylene_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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  <variable name="meta_benzo_ghi_perylene" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="ebas_component" value="benzo_k_fluoranthene" />
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  <variable name="qc_benzo_k_fluoranthene" shape="qc_benzo_k_fluoranthene_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
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  <variable name="meta_benzo_k_fluoranthene" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_chrysene" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_chrysene_in_aerosol" />
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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_longitude" type="double" value="-62.3415260315" />
    <attribute name="ebas_station_altitude" value="210.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="dibenzo_ah_anthracene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air+aerosol" />
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    <attribute name="ebas_medium" value="Glass fiber+PUF+PUF" />
    <attribute name="ebas_sample_preparation" value="Soxhlet+Hexane+13C+Silica" />
    <attribute name="ebas_blank_correction" value="Not blank corrected" />
    <attribute name="ebas_organization" value="CA01L, Environment Canada, EC/AES, Atmospheric Environmental Service, 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
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    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Hung, Hayley, , , , , , , , , &quot;" />
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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 framework: AMAP_public." />
    <attribute name="ebas_comment" value="Analytical laboratory Freshwater Institute (FWI) changed to National Laboratory for Environmental Testing (NLET) starting in 2002" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticledibenz-a-hanthracenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="gas and particle dibenz(a,h)anthracene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="gas and particle phase" />
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    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_dibenzo_ah_anthracene" shape="qc_dibenzo_ah_anthracene_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" />
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  <variable name="meta_dibenzo_ah_anthracene" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_dibenzothiophene" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_dibenzothiophene_in_aerosol" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="v_dibenzothiophene_qc v_dibenzothiophene_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
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    <attribute name="ebas_revision_date" value="2026-01-07T11:13:18.449190Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1w" />
    <attribute name="ebas_station_code" value="CA0420G" />
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    <attribute name="ebas_station_name" value="Alert" />
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    <attribute name="ebas_station_gaw_id" value="ALT" />
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    <attribute name="ebas_station_state_province" value="NU" />
    <attribute name="ebas_station_land_use" value="Military reservation" />
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    <attribute name="ebas_station_longitude" type="double" value="-62.3415260315" />
    <attribute name="ebas_station_altitude" value="210.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="dibenzothiophene" />
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    <attribute name="ebas_blank_correction" value="Not blank corrected" />
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    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
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    <attribute name="ebas_comment" value="Analytical laboratory Freshwater Institute (FWI) changed to National Laboratory for Environmental Testing (NLET) starting in 2002" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticledibenzothiophenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="gas and particle dibenzothiophene mass concentration" />
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    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_dibenzothiophene" shape="qc_dibenzothiophene_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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  <variable name="meta_dibenzothiophene" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_fluoranthene" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_fluoranthene_in_aerosol" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
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    <attribute name="ebas_station_name" value="Alert" />
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    <attribute name="ebas_station_land_use" value="Military reservation" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="fluoranthene" />
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    <attribute name="actris_variable_preferred_term" value="gas and particle fluoranthene mass concentration" />
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  <variable name="qc_fluoranthene" shape="qc_fluoranthene_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
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  </variable>
  <variable name="meta_fluoranthene" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_fluorene" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_fluorene_in_aerosol" />
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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 framework: AMAP_public." />
    <attribute name="ebas_comment" value="Analytical laboratory Freshwater Institute (FWI) changed to National Laboratory for Environmental Testing (NLET) starting in 2002" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticlefluorenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="gas and particle fluorene mass concentration" />
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  <variable name="meta_fluorene" 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" />
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="v_inden_123cd_pyrene_qc v_inden_123cd_pyrene_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
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    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
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    <attribute name="ebas_station_state_province" value="NU" />
    <attribute name="ebas_station_land_use" value="Military reservation" />
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    <attribute name="ebas_station_wmo_region" type="long" value="4" />
    <attribute name="ebas_station_latitude" type="double" value="82.4991455078" />
    <attribute name="ebas_station_longitude" type="double" value="-62.3415260315" />
    <attribute name="ebas_station_altitude" value="210.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="inden_123cd_pyrene" />
    <attribute name="ebas_unit" value="ng/m3" />
    <attribute name="ebas_matrix" value="air+aerosol" />
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    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="HVS420" />
    <attribute name="ebas_analytical_laboratory_code" value="CA01L" />
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    <attribute name="ebas_analytical_instrument_manufacturer" value="Agilent+Agilent" />
    <attribute name="ebas_analytical_instrument_model" value="6890N+5975" />
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    <attribute name="ebas_filter_description" value="Whatman GF/C" />
    <attribute name="ebas_medium" value="Glass fiber+PUF+PUF" />
    <attribute name="ebas_sample_preparation" value="Soxhlet+Hexane+13C+Silica" />
    <attribute name="ebas_blank_correction" value="Not blank corrected" />
    <attribute name="ebas_organization" value="CA01L, Environment Canada, EC/AES, Atmospheric Environmental Service, 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
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    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: AMAP_public." />
    <attribute name="ebas_comment" value="Analytical laboratory Freshwater Institute (FWI) changed to National Laboratory for Environmental Testing (NLET) starting in 2002" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticleindeno-1-2-3-cdpyrenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="gas and particle indeno(1,2,3-cd)pyrene mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas and particle phase" />
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    <attribute name="actris_temporal_resolution" value="P7D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_inden_123cd_pyrene" shape="qc_inden_123cd_pyrene_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_inden_123cd_pyrene" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_naphthalene" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_naphthalene_in_aerosol" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ng/m3" />
    <attribute name="ancillary_variables" value="v_naphthalene_qc v_naphthalene_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="2026-01-07T11:13:18.449190Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1w" />
    <attribute name="ebas_station_code" value="CA0420G" />
    <attribute name="ebas_platform_code" value="CA0420S" />
    <attribute name="ebas_station_name" value="Alert" />
    <attribute name="ebas_station_wdca_id" value="GAWACANUALT" />
    <attribute name="ebas_station_gaw_id" value="ALT" />
    <attribute name="ebas_station_gaw_name" value="Alert" />
    <attribute name="ebas_station_state_province" value="NU" />
    <attribute name="ebas_station_land_use" value="Military reservation" />
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    <attribute name="ebas_station_latitude" type="double" value="82.4991455078" />
    <attribute name="ebas_station_longitude" type="double" value="-62.3415260315" />
    <attribute name="ebas_station_altitude" value="210.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="naphthalene" />
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    <attribute name="ebas_matrix" value="air+aerosol" />
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    <attribute name="ebas_analytical_instrument_manufacturer" value="Agilent+Agilent" />
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    <attribute name="ebas_analytical_instrument_serial_number" value="US10209161" />
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    <attribute name="ebas_blank_correction" value="Not blank corrected" />
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    <attribute name="ebas_framework_name" value="" />
    <attribute name="ebas_framework_description" value="" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
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    <attribute name="ebas_comment" value="Analytical laboratory Freshwater Institute (FWI) changed to National Laboratory for Environmental Testing (NLET) starting in 2002" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticlenaphthalenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="gas and particle naphthalene mass concentration" />
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    <attribute name="actris_temporal_resolution" value="P7D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_naphthalene" shape="qc_naphthalene_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_naphthalene" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_perylene" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_perylene_in_aerosol" />
    <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/" />
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    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1w" />
    <attribute name="ebas_station_code" value="CA0420G" />
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    <attribute name="ebas_station_name" value="Alert" />
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    <attribute name="ebas_station_gaw_name" value="Alert" />
    <attribute name="ebas_station_state_province" value="NU" />
    <attribute name="ebas_station_land_use" value="Military reservation" />
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    <attribute name="ebas_station_latitude" type="double" value="82.4991455078" />
    <attribute name="ebas_station_longitude" type="double" value="-62.3415260315" />
    <attribute name="ebas_station_altitude" value="210.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="perylene" />
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    <attribute name="ebas_comment" value="Analytical laboratory Freshwater Institute (FWI) changed to National Laboratory for Environmental Testing (NLET) starting in 2002" />
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    <attribute name="actris_variable_preferred_term" value="gas and particle perylene mass concentration" />
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    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_perylene" shape="qc_perylene_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="meta_perylene" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_phenanthrene" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_phenanthrene_in_aerosol" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
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    <attribute name="ebas_station_name" value="Alert" />
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    <attribute name="ebas_station_land_use" value="Military reservation" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: AMAP_public." />
    <attribute name="ebas_comment" value="Analytical laboratory Freshwater Institute (FWI) changed to National Laboratory for Environmental Testing (NLET) starting in 2002" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticlephenanthrenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="gas and particle phenanthrene mass concentration" />
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  <variable name="qc_phenanthrene" shape="qc_phenanthrene_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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  </variable>
  <variable name="meta_phenanthrene" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_pyrene" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_pyrene_in_aerosol" />
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    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
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    <attribute name="ebas_sample_duration" value="1w" />
    <attribute name="ebas_station_code" value="CA0420G" />
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    <attribute name="ebas_station_name" value="Alert" />
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    <attribute name="ebas_station_gaw_name" value="Alert" />
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    <attribute name="ebas_station_land_use" value="Military reservation" />
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    <attribute name="ebas_medium" value="Glass fiber+PUF+PUF" />
    <attribute name="ebas_sample_preparation" value="Soxhlet+Hexane+13C+Silica" />
    <attribute name="ebas_blank_correction" value="Not 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 framework: AMAP_public." />
    <attribute name="ebas_comment" value="Analytical laboratory Freshwater Institute (FWI) changed to National Laboratory for Environmental Testing (NLET) starting in 2002" />
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    <attribute name="actris_variable_preferred_term" value="gas and particle pyrene mass concentration" />
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    <attribute name="actris_access_restriction" type="long" value="0" />
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    <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_pyrene" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_retene" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_retene_in_aerosol" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="v_retene_qc v_retene_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
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    <attribute name="ebas_revision_date" value="2026-01-07T11:13:18.449190Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1w" />
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    <attribute name="ebas_platform_code" value="CA0420S" />
    <attribute name="ebas_station_name" value="Alert" />
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    <attribute name="ebas_station_gaw_id" value="ALT" />
    <attribute name="ebas_station_gaw_name" value="Alert" />
    <attribute name="ebas_station_state_province" value="NU" />
    <attribute name="ebas_station_land_use" value="Military reservation" />
    <attribute name="ebas_station_setting" value="Polar" />
    <attribute name="ebas_station_gaw_type" value="G" />
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    <attribute name="ebas_component" value="retene" />
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    <attribute name="ebas_matrix" value="air+aerosol" />
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    <attribute name="ebas_framework_name" value="" />
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    <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: AMAP_public." />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticleretenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="gas and particle retene mass concentration" />
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  <variable name="qc_retene" shape="qc_retene_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" />
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  <variable name="meta_retene" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <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" />
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  <variable name="metadata_time" shape="metadata_time" type="double">
    <attribute name="long_name" value="time of ebas metadata intervals" />
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    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
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