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  <attribute name="title" value="POPs (persistent organic pollutants) at Zeppelin mountain (Ny-Ålesund)" />
  <attribute name="summary" value="POPs (persistent organic pollutants) at Zeppelin mountain (Ny-Ålesund). These measurements are gathered as a part of the following projects AMAP, CAMP, EMEP, NILU and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['alpha_HCH in air+aerosol (mass_concentration_of_alpha_hexachlorocyclohexane_in_aerosol)', 'beta_HCH in air+aerosol (mass_concentration_of_beta_hexachlorocyclohexane_in_aerosol)', 'gamma_HCH in air+aerosol (mass_concentration_of_gamma_hexachlorocyclohexane_in_aerosol)', 'op_DDD in air+aerosol (mass_concentration_of_op_dichlorodiphenyldichloroethane_in_aerosol)', 'op_DDE in air+aerosol (mass_concentration_of_op_dichlorodiphenyldichloroethylene_in_aerosol)', 'op_DDT in air+aerosol (mass_concentration_of_op_dichlorodiphenyltrichloroethane_in_aerosol)', 'pp_DDD in air+aerosol (mass_concentration_of_pp_dichlorodiphenyldichloroethane_in_aerosol)', 'pp_DDE in air+aerosol (mass_concentration_of_pp_dichlorodiphenyldichloroethylene_in_aerosol)', 'pp_DDT in air+aerosol (mass_concentration_of_pp_dichlorodiphenyltrichloroethane_in_aerosol)', 'sum_DDT in air+aerosol (mass_concentration_of_sum_dichlorodiphenyltrichloroethane_in_aerosol)']" />
  <attribute name="keywords" value="&quot;Zeppelin mountain (Ny-Ålesund)&quot; NO0042G alpha_HCH beta_HCH gamma_HCH op_DDD op_DDE op_DDT pp_DDD pp_DDE pp_DDT sum_DDT air+aerosol AMAP CAMP EMEP NILU mass_concentration_of_alpha_hexachlorocyclohexane_in_aerosol mass_concentration_of_beta_hexachlorocyclohexane_in_aerosol mass_concentration_of_gamma_hexachlorocyclohexane_in_aerosol mass_concentration_of_op_dichlorodiphenyldichloroethane_in_aerosol mass_concentration_of_op_dichlorodiphenyldichloroethylene_in_aerosol mass_concentration_of_op_dichlorodiphenyltrichloroethane_in_aerosol mass_concentration_of_pp_dichlorodiphenyldichloroethane_in_aerosol mass_concentration_of_pp_dichlorodiphenyldichloroethylene_in_aerosol mass_concentration_of_pp_dichlorodiphenyltrichloroethane_in_aerosol mass_concentration_of_sum_dichlorodiphenyltrichloroethane_in_aerosol" />
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  <attribute name="doi" value="https://doi.org/10.48597/BAVA-4WW9" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Halvorsen, H., Nizzetto, P., AMAP, CAMP, EMEP, NILU, 2026, POPs (persistent organic pollutants) at Zeppelin mountain (Ny-Ålesund), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/BAVA-4WW9" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="NO01L &quot;Norwegian Institute for Air Research&quot; NILU &quot;Instituttveien 18&quot; 2007 Kjeller Norway" />
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  <attribute name="date_created" value="2026-06-15T09:39:03.627846Z" />
  <attribute name="date_metadata_modified" value="2026-06-03T00:00:00Z" />
  <attribute name="creator_name" value="Helene Lunder Halvorsen, Pernilla Bohlin Nizzetto" />
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  <attribute name="contributor_name" value="Helene Lunder Halvorsen, Anne Hjellbrekke" />
  <attribute name="contributor_role" value="data submitter, data submitter" />
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  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
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  <attribute name="geospatial_bounds" value="POINT Z (11.88668 78.90715 474)" />
  <attribute name="geospatial_lat_min" type="double" value="78.90715" />
  <attribute name="geospatial_lat_max" type="double" value="78.90715" />
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  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="time_coverage_start" value="2025-01-06T08:58:00Z" />
  <attribute name="time_coverage_end" value="2025-07-23T07:58:00Z" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
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    <attribute name="ebas_station_longitude" type="double" value="11.88668" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="gamma_HCH" />
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    <attribute name="ebas_sample_preparation" value="Soxhlet+Di-ethyl ether/Hexane 10:90+13C+Sulphuric acid+Silica" />
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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_op_dichlorodiphenyldichloroethane_in_aerosol" />
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    <attribute name="ebas_component" value="op_DDD" />
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    <attribute name="standard_name" value="mass_concentration_of_op_dichlorodiphenyldichloroethylene_in_aerosol" />
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    <attribute name="missing_value" type="int" value="0" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_pp_DDT" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_pp_dichlorodiphenyltrichloroethane_in_aerosol" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_revision_date" value="2026-06-03T00:00:00.000000Z" />
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    <attribute name="ebas_station_gaw_name" value="Zeppelin Mountain (Ny Ålesund)" />
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    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="78.90715" />
    <attribute name="ebas_station_longitude" type="double" value="11.88668" />
    <attribute name="ebas_station_altitude" value="474.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pp_DDT" />
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    <attribute name="ebas_instrument_name" value="fppuf_42b" />
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    <attribute name="ebas_medium" value="Glass fiber+PUF+PUF" />
    <attribute name="ebas_sample_preparation" value="Soxhlet+Di-ethyl ether/Hexane 10:90+13C+Sulphuric acid+Silica" />
    <attribute name="ebas_blank_correction" value="Not blank corrected" />
    <attribute name="ebas_organization" value="NO01L, Norwegian Institute for Air Research, NILU, , Instituttveien 18, , 2007, Kjeller, Norway" />
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    <attribute name="actris_variable_preferred_term" value="gas and particle p,p-DDT mass concentration" />
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  <variable name="qc_pp_DDT" shape="qc_pp_DDT_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" />
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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_sum_dichlorodiphenyltrichloroethane_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="long_name" value="time of measurement" />
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    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
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    <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" />
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