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  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Ground based in situ observations of tetrachloroveratrole at Alert (CA0420G) using high_vol_sampler" />
  <attribute name="keywords" value="tetrachloroveratrole, Alert, CA0420G, AMAP_public, mass_concentration_of_tetrachloroveratrole_in_aerosol, air+aerosol" />
  <attribute name="id" value="QGEJ-F2U8.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="AMAP_public" />
  <attribute name="acknowledgement" type="double" />
  <attribute name="doi" value="https://doi.org/10.48597/QGEJ-F2U8" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, tetrachloroveratrole - high_vol_sampler at Alert, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/QGEJ-F2U8" />
  <attribute name="summary" value="Ground based in situ observations of tetrachloroveratrole at Alert (CA0420G) using high_vol_sampler. 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: tetrachloroveratrole in air+aerosol (mass_concentration_of_tetrachloroveratrole_in_aerosol)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="CA01L, Environment Canada, EC/AES, Atmospheric Environmental Service, 4905 Dufferin Street, M3H 5T4, Downsview, Ontario, Canada" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2020-08-28T08:48:31 UTC" />
  <attribute name="date_metadata_modified" value="2020-08-28T08:48:31 UTC" />
  <attribute name="creator_name" value="Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung" />
  <attribute name="creator_type" value="person" />
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  <attribute name="contributor_name" value="Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung" />
  <attribute name="contributor_role" value="data submitter, data submitter, data submitter, data submitter, data submitter, data submitter, data submitter, data submitter, data submitter, data submitter, data submitter, data submitter, data submitter, data submitter, 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 (82.4991455078 -62.3415260315 210.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="82.4991455078" />
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  <attribute name="geospatial_lon_max" type="double" value="-62.3415260315" />
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  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="1992-01-19T16:30:00 UTC" />
  <attribute name="time_coverage_end" value="2007-01-02T22:00:00 UTC" />
  <attribute name="time_coverage_duration" value="P0014-11-14T05:30:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-07T00:00:00" />
  <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="Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, tetrachloroveratrole - high_vol_sampler at Alert, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/QGEJ-F2U8" />
  <attribute name="ebas_set_type_code" value="TI" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="QGEJ-F2U8.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/QGEJ-F2U8" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/QGEJ-F2U8" />
  <attribute name="ebas_file_creation" value="2023-12-12T17:31:55.723926 UTC" />
  <attribute name="ebas_export_state" value="2020-08-28T07:38:14.157000 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="19920119163000" />
  <attribute name="ebas_revision_date" value="20200828084831" />
  <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_period_code" value="15y" />
  <attribute name="ebas_resolution_code" value="1w" />
  <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" value="4" />
  <attribute name="ebas_station_latitude" value="82.4991455078" />
  <attribute name="ebas_station_longitude" 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="HVS420" />
  <attribute name="ebas_method_ref" value="CA01L_POP" />
  <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" />
  <attribute name="ebas_framework_acronym" value="AMAP_public" />
  <attribute name="ebas_framework_contact_name" value="Wenche Aas" />
  <attribute name="ebas_framework_contact_email" value="waa@nilu.no" />
  <attribute name="ebas_originator" value="Hung, Hayley, , , , , , , , , " />
  <attribute name="ebas_submitter" value="Hung, Hayley, , , , , , , , , " />
  <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="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;Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, Hayley Hung, tetrachloroveratrole - high_vol_sampler at Alert, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/QGEJ-F2U8&quot;,&#xA;    &quot;Set type code&quot;: &quot;TI&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;QGEJ-F2U8.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/QGEJ-F2U8&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/QGEJ-F2U8&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-12-12T17:31:55.723926 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2020-08-28T07:38:14.157000 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;19920119163000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20200828084831&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;, initial revision, manually inspected&quot;,&#xA;    &quot;Statistics&quot;: &quot;arithmetic mean&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;15y&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1w&quot;,&#xA;    &quot;Sample duration&quot;: &quot;1w&quot;,&#xA;    &quot;Station code&quot;: &quot;CA0420G&quot;,&#xA;    &quot;Platform code&quot;: &quot;CA0420S&quot;,&#xA;    &quot;Station name&quot;: &quot;Alert&quot;,&#xA;    &quot;Station WDCA-ID&quot;: &quot;GAWACANUALT&quot;,&#xA;    &quot;Station GAW-ID&quot;: &quot;ALT&quot;,&#xA;    &quot;Station GAW-Name&quot;: &quot;Alert&quot;,&#xA;    &quot;Station state/province&quot;: &quot;NU&quot;,&#xA;    &quot;Station land use&quot;: &quot;Military reservation&quot;,&#xA;    &quot;Station setting&quot;: &quot;Polar&quot;,&#xA;    &quot;Station GAW type&quot;: &quot;G&quot;,&#xA;    &quot;Station WMO region&quot;: &quot;4&quot;,&#xA;    &quot;Station latitude&quot;: &quot;82.4991455078&quot;,&#xA;    &quot;Station longitude&quot;: &quot;-62.3415260315&quot;,&#xA;    &quot;Station altitude&quot;: &quot;210.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Component&quot;: &quot;tetrachloroveratrole&quot;,&#xA;    &quot;Unit&quot;: &quot;pg/m3&quot;,&#xA;    &quot;Matrix&quot;: &quot;air+aerosol&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;CA01L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;high_vol_sampler&quot;,&#xA;    &quot;Instrument name&quot;: &quot;HVS420&quot;,&#xA;    &quot;Method ref&quot;: &quot;CA01L_POP&quot;,&#xA;    &quot;Filter description&quot;: &quot;Whatman GF/C&quot;,&#xA;    &quot;Medium&quot;: &quot;Glass fiber+PUF+PUF&quot;,&#xA;    &quot;Sample preparation&quot;: &quot;Soxhlet+Hexane+13C+Silica&quot;,&#xA;    &quot;Blank correction&quot;: &quot;Not blank corrected&quot;,&#xA;    &quot;Organization&quot;: &quot;CA01L, Environment Canada, EC/AES, Atmospheric Environmental Service, 4905 Dufferin Street, , M3H 5T4, \&quot;Downsview, Ontario\&quot;, Canada&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;AMAP_public&quot;,&#xA;    &quot;Framework contact name&quot;: &quot;Wenche Aas&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;waa@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Hung, Hayley, , , , , , , , , &quot;,&#xA;    &quot;Submitter&quot;: &quot;Hung, Hayley, , , , , , , , , &quot;,&#xA;    &quot;Comment&quot;: &quot;Analytical laboratory Freshwater Institute (FWI) changed to National Laboratory for Environmental Testing (NLET) starting in 2002&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="483" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="15" />
  <dimension name="tetrachloroveratrole_qc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="1992-01-21T17:45:00Z" />
    <attribute name="time_coverage_end" value="2006-12-29T20:46:30Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="978027.0" />
    <attribute name="time_coverage_duration" value="P0Y0M5456DT3H1M30.000S" />
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  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-05-17" />
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    <attribute name="long_name" value="time bounds for measurement" />
  </variable>
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    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
  </variable>
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    <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="tetrachloroveratrole_qc 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="20200828084831" />
    <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" />
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    <attribute name="ebas_station_gaw_id" value="ALT" />
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    <attribute name="ebas_station_state_province" value="NU" />
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    <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" />
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    <attribute name="ebas_instrument_type" value="high_vol_sampler" />
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    <attribute name="ebas_filter_description" value="Whatman GF/C" />
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    <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_email" value="waa@nilu.no" />
    <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="units" value="1" />
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    <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" />
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  <variable name="metadata_time" shape="metadata_time" type="double">
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    <attribute name="standard_name" value="time" />
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    <attribute name="calendar" value="gregorian" />
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    <attribute name="_CoordinateAxisType" value="Time" />
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