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  <attribute name="title" value="Inorganics in air and particle phase at Villum Research Station, Station Nord" />
  <attribute name="summary" value="Inorganics in air and particle phase at Villum Research Station, Station Nord. These measurements are gathered as a part of the following projects AMAP, EMEP, GAW-WDCRG and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['ammonia in air (mass_concentration_of_ammonia_expressed_as_nitrogen_in_air)', 'bromide in aerosol (mass_concentration_of_bromide_in_dry_aerosol_particles_in_air)', 'chloride in aerosol (mass_concentration_of_chloride_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)', 'nitric_acid in air (mass_concentration_of_nitric_acid_expressed_as_nitrogen_in_air)', 'sodium in aerosol (mass_concentration_of_sodium_in_dry_aerosol_particles_in_air)', 'sulphate_total in aerosol (mass_concentration_of_sulphate_expressed_as_sulphur_in_dry_aerosol_particles_in_air)', 'sulphate_total in aerosol (mass_concentration_of_sulphate_in_dry_aerosol_particles_in_air)', 'sulphur_dioxide in air (mass_concentration_of_sulphur_dioxide_expressed_as_sulphur_in_air)']" />
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  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/HUKP-KD33" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Skov, H., Nøjgaard, J., Poulsen, M., AMAP, EMEP, GAW-WDCRG, 2024, Inorganics in air and particle phase at Villum Research Station, Station Nord, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/HUKP-KD33" />
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  <attribute name="contributor_name" value="Rune Keller" />
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    <attribute name="ancillary_variables" value="qc_chloride meta_chloride" />
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    <attribute name="ebas_revision_date" value="2024-04-02T10:41:15.476726Z" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="ancillary_variables" value="qc_nitric_acid meta_nitric_acid" />
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    <attribute name="ebas_component" value="nitric_acid" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2024-04-02T10:41:15.476726Z" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_component" value="sodium" />
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    <attribute name="actris_variable_preferred_term" value="aerosol particle sodium mass concentration" />
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    <attribute name="ebas_instrument_name" value="f3p_10" />
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    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Skov, Henrik, hsk@envs.au.dk, Aarhus Universitet, ATAIR, ENVIS, Frederiksborgvej 399, Postbox 358, 4000, Roskilde, Denmark&quot;, &quot;Nøjgaard, Jacob Klenø, jakn@envs.au.dk, Aarhus Universitet, ATAIR, ENVIS, Frederiksborgvej 399, Postbox 358, 4000, Roskilde, Denmark&quot;, &quot;Poulsen, Maria Bech, mabp@envs.au.dk, Aarhus Universitet, ATAIR, ENVIS, Frederiksborgvej 399, Postbox 358, 4000, Roskilde, Denmark&quot;" />
    <attribute name="ebas_submitter" value="&quot;Keller, Rune, , , , , , , , , &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 frameworks: AMAP, EMEP. nobody" />
    <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/AMAP, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP" />
    <attribute name="actris_framework_preferred_term" value="AMAP, EMEP" />
    <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="v_sulphur_dioxide" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_sulphur_dioxide_expressed_as_sulphur_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_sulphur_dioxide meta_sulphur_dioxide" />
    <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="2024-04-02T10:41:15.476726Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1w" />
    <attribute name="ebas_orig_time_res" value="1w" />
    <attribute name="ebas_station_code" value="DK0010G" />
    <attribute name="ebas_platform_code" value="DK0010S" />
    <attribute name="ebas_station_name" value="Villum Research Station, Station Nord" />
    <attribute name="ebas_station_latitude" type="double" value="81.6" />
    <attribute name="ebas_station_longitude" type="double" value="-16.67" />
    <attribute name="ebas_station_altitude" value="20.0 m" />
    <attribute name="ebas_measurement_altitude" value="1.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="sulphur_dioxide" />
    <attribute name="ebas_unit" value="ug S/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="DK01L" />
    <attribute name="ebas_instrument_type" value="filter_3pack" />
    <attribute name="ebas_instrument_name" value="f3p_10" />
    <attribute name="ebas_analytical_laboratory_code" value="DK01L" />
    <attribute name="ebas_analytical_measurement_technique" value="IC" />
    <attribute name="ebas_analytical_instrument_name" value="ATAIR_01" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Dionex" />
    <attribute name="ebas_analytical_instrument_model" value="ICS-2000" />
    <attribute name="ebas_method_ref" value="DK01L_ATAIR_01" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v1996" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward facing" />
    <attribute name="ebas_flow_rate" value="34.72222222222222 l/min" />
    <attribute name="ebas_medium" value="Teflon" />
    <attribute name="ebas_sample_preparation" value="Water extraction after ultrasonic treatment" />
    <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 together with sampling head." />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
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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 frameworks: AMAP, EMEP, GAW-WDCRG. nobody" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/sulfurdioxidemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="sulfur dioxide mass concentration" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_constraints_preferred_term" value="expressed as sulfur" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
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    <attribute name="actris_instrument_type_preferred_term" value="low volume filter sampler" />
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    <attribute name="actris_framework_preferred_term" value="AMAP, EMEP, GAW-WDCRG" />
    <attribute name="actris_temporal_resolution" value="P7D" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_sulphur_dioxide" shape="qc_sulphur_dioxide_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_sulphur_dioxide" 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>
