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  <attribute name="title" value="Inorganics in air and particle phase at Alert" />
  <attribute name="summary" value="Inorganics in air and particle phase at Alert. These measurements are gathered as a part of the following projects GAW-WDCA 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)', 'bromide in aerosol (mass_concentration_of_bromide_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)', 'magnesium in aerosol (mass_concentration_of_magnesium_in_dry_aerosol_particles_in_air)', 'nitrate in aerosol (mass_concentration_of_nitrate_expressed_as_nitrogen_in_dry_aerosol_particles_in_air)', 'nitrate in aerosol (mass_concentration_of_nitrate_in_dry_aerosol_particles_in_air)', 'nitrogen_dioxide in air (mole_fraction_of_nitrogen_dioxide_in_air)', 'nitrogen_dioxide in air (mass_concentration_of_nitrogen_dioxide_expressed_as_nitrogen_in_air)', 'oxalate in aerosol (mass_concentration_of_oxalate_in_dry_aerosol_particles_in_air)', 'potassium in aerosol (mass_concentration_of_potassium_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)']" />
  <attribute name="keywords" value="Alert CA0420G ammonium bromide calcium chloride magnesium nitrate nitrogen_dioxide oxalate potassium sodium sulphate_total aerosol air GAW-WDCA 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_bromide_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_magnesium_in_dry_aerosol_particles_in_air mass_concentration_of_nitrate_expressed_as_nitrogen_in_dry_aerosol_particles_in_air mass_concentration_of_nitrate_in_dry_aerosol_particles_in_air mole_fraction_of_nitrogen_dioxide_in_air mass_concentration_of_nitrogen_dioxide_expressed_as_nitrogen_in_air mass_concentration_of_oxalate_in_dry_aerosol_particles_in_air mass_concentration_of_potassium_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" />
  <attribute name="id" value="WUFY-HG5G.nc" />
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  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/WUFY-HG5G" />
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  <attribute name="date_created" value="2022-01-19T17:14:31.807000Z" />
  <attribute name="date_metadata_modified" value="2022-01-19T16:59:25Z" />
  <attribute name="creator_name" value="Sangeeta Sharma" />
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  <attribute name="contributor_name" value="Sangeeta Sharma" />
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  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
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  <attribute name="time_coverage_end" value="2019-01-07T15:05:00Z" />
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  <attribute name="timezone" value="UTC" />
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  <attribute name="ebas_startdate" value="2011-03-07T20:36:00.000000Z" />
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  <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" />
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  <attribute name="ebas_station_altitude" value="210.0 m" />
  <attribute name="ebas_measurement_altitude" value="220.0 m" />
  <attribute name="ebas_measurement_height" value="10.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_laboratory_code" value="CA01L" />
  <attribute name="ebas_instrument_type" value="filter_1pack" />
  <attribute name="ebas_instrument_name" value="Inorganics_1um_sampler" />
  <attribute name="ebas_instrument_manufacturer" value="ECCC" />
  <attribute name="ebas_instrument_model" value="One stage inline" />
  <attribute name="ebas_analytical_laboratory_code" value="CA01L" />
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  <attribute name="ebas_method_ref" value="CA01L_DX-600" />
  <attribute name="ebas_standard_method" value="None" />
  <attribute name="ebas_inlet_type" value="Cyclone" />
  <attribute name="ebas_inlet_description" value="Whole-air inlet type with larger particles removed by air stream by size cut 1 um cyclone URG 757 located immediately upstream of filter pack." />
  <attribute name="ebas_flow_rate" value="27.1 l/min" />
  <attribute name="ebas_medium" value="Teflon" />
  <attribute name="ebas_coating_solution" value="None" />
  <attribute name="ebas_sample_preparation" value="Water extraction" />
  <attribute name="ebas_blank_correction" value="Blank corrected" />
  <attribute name="ebas_humidity_temperaure_control" value="None" />
  <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions indoors together with sampling head." />
  <attribute name="ebas_detection_limit_expl" value="Determined by taking 2.33 times standard deviation of ensemble of field blanks" />
  <attribute name="ebas_measurement_uncertainty" value="11.18 %" />
  <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
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  <attribute name="ebas_framework_name" value="World Data Centre for Aerosols" />
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  <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;&quot;Climate Chemistry Measurements Research, Environment Canada&quot;&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;&quot;Downsview, Ontario&quot;&quot;, Canada&quot;" />
  <attribute name="ebas_submitter" value="&quot;Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;&quot;Climate Chemistry Measurements Research, Environment Canada&quot;&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;&quot;Downsview, Ontario&quot;&quot;, Canada&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: GAW-WDCA. Request acknowledgement details from data originator" />
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  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
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  <dimension name="qc_ammonium_ug_N_per_m3_flags" length="1" />
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  <dimension name="qc_nitrate_ug_per_m3_flags" length="2" />
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  <dimension name="qc_nitrogen_dioxide_ug_N_per_m3_flags" length="2" />
  <dimension name="qc_oxalate_flags" length="2" />
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  <dimension name="qc_sodium_flags" length="2" />
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  <dimension name="qc_sulphate_total_ug_per_m3_flags" length="1" />
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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_data_level" value="2" />
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    <attribute name="ebas_station_code" value="CA0420G" />
    <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" />
    <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" />
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    <attribute name="ebas_measurement_height" value="10.0 m" />
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    <attribute name="ebas_component" value="ammonium" />
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    <attribute name="ebas_inlet_description" value="Whole-air inlet type with larger particles removed by air stream by size cut 1 um cyclone URG 757 located immediately upstream of filter pack." />
    <attribute name="ebas_flow_rate" value="27.1 l/min" />
    <attribute name="ebas_medium" value="Teflon" />
    <attribute name="ebas_coating_solution" value="None" />
    <attribute name="ebas_sample_preparation" value="Water extraction" />
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    <attribute name="ebas_framework_description" value="&quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
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    <attribute name="ebas_originator" value="&quot;Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;&quot;Climate Chemistry Measurements Research, Environment Canada&quot;&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;&quot;Downsview, Ontario&quot;&quot;, Canada&quot;" />
    <attribute name="ebas_submitter" value="&quot;Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;&quot;Climate Chemistry Measurements Research, Environment Canada&quot;&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;&quot;Downsview, Ontario&quot;&quot;, Canada&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: GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticleammoniummassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle ammonium mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
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  <variable name="qc_ammonium_ug_per_m3" shape="qc_ammonium_ug_per_m3_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_ammonium_ug_per_m3" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_bromide" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_bromide_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="qc_bromide meta_bromide" />
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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_component" value="bromide" />
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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_calcium_in_dry_aerosol_particles_in_air" />
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    <attribute name="ebas_station_land_use" value="Military reservation" />
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    <attribute name="ebas_comment" value="Instrument is a pumping system composed of a filter holder, flow controller, flow reporter, and cyclone; assembled by ECCC. The uncertainty values are from 10% uncertainty in concentration and 5% from the flow controller (manufacturer uncertainty 2%)." />
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    <attribute name="actris_variable_preferred_term" value="aerosol particle calcium mass concentration" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_chloride" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_chloride_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="qc_chloride meta_chloride" />
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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" />
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    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" type="long" value="4" />
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    <attribute name="ebas_coating_solution" value="None" />
    <attribute name="ebas_sample_preparation" value="Water extraction" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_comment" value="Instrument is a pumping system composed of a filter holder, flow controller, flow reporter, and cyclone; assembled by ECCC. The uncertainty values are from 10% uncertainty in concentration and 5% from the flow controller (manufacturer uncertainty 2%)." />
    <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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  <variable name="qc_chloride" shape="qc_chloride_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="standard_name" value="mass_concentration_of_magnesium_in_dry_aerosol_particles_in_air" />
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    <attribute name="ebas_component" value="magnesium" />
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    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrate" />
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    <attribute name="ebas_matrix" value="aerosol" />
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    <attribute name="ebas_instrument_type" value="filter_1pack" />
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    <attribute name="ebas_instrument_manufacturer" value="ECCC" />
    <attribute name="ebas_instrument_model" value="One stage inline" />
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    <attribute name="ebas_analytical_instrument_model" value="DX-600" />
    <attribute name="ebas_method_ref" value="CA01L_DX-600" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="Whole-air inlet type with larger particles removed by air stream by size cut 1 um cyclone URG 757 located immediately upstream of filter pack." />
    <attribute name="ebas_flow_rate" value="27.1 l/min" />
    <attribute name="ebas_medium" value="Teflon" />
    <attribute name="ebas_coating_solution" value="None" />
    <attribute name="ebas_sample_preparation" value="Water extraction" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
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    <attribute name="ebas_framework_description" value="&quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&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: GAW-WDCA. Request acknowledgement details from data originator" />
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    <attribute name="actris_variable_preferred_term" value="aerosol particle nitrate mass concentration" />
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    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_nitrate_ug_per_m3" shape="qc_nitrate_ug_per_m3_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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    <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="mole_fraction_of_nitrogen_dioxide_in_air" />
    <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="2022-01-19T16:59:25.253000Z" />
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    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
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    <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_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_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_dioxide" />
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    <attribute name="ebas_matrix" value="air" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitrogendioxideamountfraction" />
    <attribute name="actris_variable_preferred_term" value="nitrogen dioxide amount fraction" />
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    <attribute name="ebas_component" value="nitrogen_dioxide" />
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    <attribute name="ebas_analytical_instrument_model" value="DX-600" />
    <attribute name="ebas_method_ref" value="CA01L_DX-600" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="Whole-air inlet type with larger particles removed by air stream by size cut 1 um cyclone URG 757 located immediately upstream of filter pack." />
    <attribute name="ebas_flow_rate" value="27.1 l/min" />
    <attribute name="ebas_medium" value="Teflon" />
    <attribute name="ebas_coating_solution" value="None" />
    <attribute name="ebas_sample_preparation" value="Water extraction" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
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    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if within detection limit, flagged with 780" />
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    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
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    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;&quot;Climate Chemistry Measurements Research, Environment Canada&quot;&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;&quot;Downsview, Ontario&quot;&quot;, Canada&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: GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Instrument is a pumping system composed of a filter holder, flow controller, flow reporter, and cyclone; assembled by ECCC. The uncertainty values are from 10% uncertainty in concentration and 5% from the flow controller (manufacturer uncertainty 2%)." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticleoxalatemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle oxalate mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
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    <attribute name="actris_framework_preferred_term" value="GAW-WDCA" />
    <attribute name="actris_temporal_resolution" value="P7D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_oxalate" shape="qc_oxalate_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_oxalate" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_potassium" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_potassium_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_potassium meta_potassium" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2022-01-19T16:59:25.253000Z" />
    <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_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" />
    <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" />
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    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="potassium" />
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    <attribute name="ebas_flow_rate" value="27.1 l/min" />
    <attribute name="ebas_medium" value="Teflon" />
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    <attribute name="ebas_comment" value="Instrument is a pumping system composed of a filter holder, flow controller, flow reporter, and cyclone; assembled by ECCC. The uncertainty values are from 10% uncertainty in concentration and 5% from the flow controller (manufacturer uncertainty 2%)." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlepotassiummassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle potassium 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="_FillValue" type="double" value="NaN" />
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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_component" value="sodium" />
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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_component" value="sulphate_total" />
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    <attribute name="ebas_flow_rate" value="27.1 l/min" />
    <attribute name="ebas_medium" value="Teflon" />
    <attribute name="ebas_coating_solution" value="None" />
    <attribute name="ebas_sample_preparation" value="Water extraction" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions indoors together with sampling head." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 2.33 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_measurement_uncertainty" value="11.18 %" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if within detection limit, flagged with 780" />
    <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="GAW-WDCA" />
    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;&quot;Climate Chemistry Measurements Research, Environment Canada&quot;&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;&quot;Downsview, Ontario&quot;&quot;, Canada&quot;" />
    <attribute name="ebas_submitter" value="&quot;Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;&quot;Climate Chemistry Measurements Research, Environment Canada&quot;&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;&quot;Downsview, Ontario&quot;&quot;, Canada&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: GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Instrument is a pumping system composed of a filter holder, flow controller, flow reporter, and cyclone; assembled by ECCC. The uncertainty values are from 10% uncertainty in concentration and 5% from the flow controller (manufacturer uncertainty 2%)." />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlesulphatemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle sulphate mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedassulfur" />
    <attribute name="actris_constraints_preferred_term" value="expressed as sulfur" />
    <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" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCA" />
    <attribute name="actris_framework_preferred_term" value="GAW-WDCA" />
    <attribute name="actris_temporal_resolution" value="P7D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_sulphate_total_ug_S_per_m3" shape="qc_sulphate_total_ug_S_per_m3_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_sulphate_total_ug_S_per_m3" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_sulphate_total_ug_per_m3" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_sulphate_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_sulphate_total_ug_per_m3 meta_sulphate_total_ug_per_m3" />
    <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="2022-01-19T16:59:25.253000Z" />
    <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_measurement_altitude" value="220.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 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="aerosol" />
    <attribute name="ebas_laboratory_code" value="CA01L" />
    <attribute name="ebas_instrument_type" value="filter_1pack" />
    <attribute name="ebas_instrument_name" value="Inorganics_1um_sampler" />
    <attribute name="ebas_instrument_manufacturer" value="ECCC" />
    <attribute name="ebas_instrument_model" value="One stage inline" />
    <attribute name="ebas_analytical_laboratory_code" value="CA01L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC" />
    <attribute name="ebas_analytical_instrument_name" value="DX-600" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
    <attribute name="ebas_analytical_instrument_model" value="DX-600" />
    <attribute name="ebas_method_ref" value="CA01L_DX-600" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="Whole-air inlet type with larger particles removed by air stream by size cut 1 um cyclone URG 757 located immediately upstream of filter pack." />
    <attribute name="ebas_flow_rate" value="27.1 l/min" />
    <attribute name="ebas_medium" value="Teflon" />
    <attribute name="ebas_coating_solution" value="None" />
    <attribute name="ebas_sample_preparation" value="Water extraction" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions indoors together with sampling head." />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 2.33 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_measurement_uncertainty" value="11.18 %" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if within detection limit, flagged with 780" />
    <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="GAW-WDCA" />
    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;&quot;Climate Chemistry Measurements Research, Environment Canada&quot;&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;&quot;Downsview, Ontario&quot;&quot;, Canada&quot;" />
    <attribute name="ebas_submitter" value="&quot;Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;&quot;Climate Chemistry Measurements Research, Environment Canada&quot;&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;&quot;Downsview, Ontario&quot;&quot;, Canada&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: GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlesulphatemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle sulphate mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <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" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCA" />
    <attribute name="actris_framework_preferred_term" value="GAW-WDCA" />
    <attribute name="actris_temporal_resolution" value="P7D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_sulphate_total_ug_per_m3" shape="qc_sulphate_total_ug_per_m3_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_sulphate_total_ug_per_m3" 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>
