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  <attribute name="title" value="Hexachlorobenzene and Halomethoxybenzenes (HMBs) at Alert" />
  <attribute name="summary" value="Hexachlorobenzene and Halomethoxybenzenes (HMBs) 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: ['2-4-6-tribromoanisole in air+aerosol', '2-4-dibromoanisole in air+aerosol', 'DAME in air+aerosol', 'HCBD in air+aerosol (mass_concentration_of_hexachlorobutadiene_in_aerosol)', 'hexachlorobenzene in air+aerosol', 'pentachloroanisole in air+aerosol (mass_concentration_of_pentachloroanisole_in_aerosol)', 'pentachlorobenzene in air+aerosol (mass_concentration_of_pentachlorobenzene_in_aerosol)', 'tetrachloroveratrole in air+aerosol (mass_concentration_of_tetrachloroveratrole_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_code" value="CA0420G" />
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    <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" />
    <attribute name="ebas_station_setting" value="Polar" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <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="pentachlorobenzene" />
    <attribute name="ebas_unit" value="pg/m3" />
    <attribute name="ebas_matrix" value="air+aerosol" />
    <attribute name="ebas_laboratory_code" value="CA01L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="HVPS1A" />
    <attribute name="ebas_analytical_laboratory_code" value="CA01L" />
    <attribute name="ebas_analytical_measurement_technique" value="GC-MS/MS" />
    <attribute name="ebas_analytical_instrument_name" value="GCMSMS_Blizzard" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Agilent+Agilent" />
    <attribute name="ebas_analytical_instrument_model" value="7890B+7010B Triple Quadrupole" />
    <attribute name="ebas_analytical_instrument_serial_number" value="US17463020+US1746W103" />
    <attribute name="ebas_method_ref" value="CA01L_GC-MSMS" />
    <attribute name="ebas_filter_description" value="Whatman GF/C" />
    <attribute name="ebas_medium" value="Glass fiber+PUF+XAD+PUF" />
    <attribute name="ebas_sample_preparation" value="ASE+Hexane" />
    <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" />
    <attribute name="ebas_framework_acronym" value="AMAP_public" />
    <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;" />
    <attribute name="ebas_submitter" value="&quot;Hung, Hayley, , , , , , , , , &quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: AMAP_public." />
    <attribute name="ebas_comment" value="Recovery corrected using data from 2019-2020" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticlepentachlorobenzenemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="gas and particle pentachlorobenzene mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="gas and particle phase" />
    <attribute name="actris_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/highvolumefiltersampler" />
    <attribute name="actris_instrument_type_preferred_term" value="high volume filter sampler" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/AMAP" />
    <attribute name="actris_framework_preferred_term" value="AMAP" />
    <attribute name="actris_temporal_resolution" value="P28D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_pentachlorobenzene" shape="qc_pentachlorobenzene_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_pentachlorobenzene" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_tetrachloroveratrole" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_tetrachloroveratrole_in_aerosol" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="pg/m3" />
    <attribute name="ancillary_variables" value="v_tetrachloroveratrole_qc v_tetrachloroveratrole_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="2025-12-08T20:34:18.000000Z" />
    <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" />
    <attribute name="ebas_station_setting" value="Polar" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <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="tetrachloroveratrole" />
    <attribute name="ebas_unit" value="pg/m3" />
    <attribute name="ebas_matrix" value="air+aerosol" />
    <attribute name="ebas_laboratory_code" value="CA01L" />
    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
    <attribute name="ebas_instrument_name" value="HVPS1A" />
    <attribute name="ebas_analytical_laboratory_code" value="CA01L" />
    <attribute name="ebas_analytical_measurement_technique" value="GC-MS/MS" />
    <attribute name="ebas_analytical_instrument_name" value="GCMSMS_Blizzard" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Agilent+Agilent" />
    <attribute name="ebas_analytical_instrument_model" value="7890B+7010B Triple Quadrupole" />
    <attribute name="ebas_analytical_instrument_serial_number" value="US17463020+US1746W103" />
    <attribute name="ebas_method_ref" value="CA01L_GC-MSMS" />
    <attribute name="ebas_filter_description" value="Whatman GF/C" />
    <attribute name="ebas_medium" value="Glass fiber+PUF+XAD+PUF" />
    <attribute name="ebas_sample_preparation" value="ASE+Hexane" />
    <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" />
    <attribute name="ebas_framework_acronym" value="AMAP_public" />
    <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;" />
    <attribute name="ebas_submitter" value="&quot;Hung, Hayley, , , , , , , , , &quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the framework: AMAP_public." />
    <attribute name="ebas_comment" value="Recovery corrected using data from 2019-2020" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticletetrachloroveratrolemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="gas and particle tetrachloroveratrole mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasandparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="gas and particle phase" />
    <attribute name="actris_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/highvolumefiltersampler" />
    <attribute name="actris_instrument_type_preferred_term" value="high volume filter sampler" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/AMAP" />
    <attribute name="actris_framework_preferred_term" value="AMAP" />
    <attribute name="actris_temporal_resolution" value="P28D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_tetrachloroveratrole" shape="qc_tetrachloroveratrole_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_tetrachloroveratrole" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="metadata_time" shape="metadata_time" type="double">
    <attribute name="long_name" value="time of ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
</netcdf>
