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  <attribute name="title" value="Nitrogen oxides at SIRTA Atmospheric Research Observatory" />
  <attribute name="summary" value="Nitrogen oxides at SIRTA Atmospheric Research Observatory. These measurements are gathered as a part of the following projects ACTRIS, EMEP, GAW-WDCRG and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['NOx in air (mole_fraction_of_nox_in_air)', 'NOx in air (mass_concentration_of_nox_expressed_as_nitrogen_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)', 'nitrogen_monoxide in air (mole_fraction_of_nitrogen_monoxide_in_air)', 'nitrogen_monoxide in air (mass_concentration_of_nitrogen_monoxide_expressed_as_nitrogen_in_air)']" />
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  <attribute name="doi" value="https://doi.org/10.48597/9J8K-VQ6N" />
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  <attribute name="citation" value="Gros, V., Bonnaire, N., ACTRIS, EMEP, GAW-WDCRG, 2026, Nitrogen oxides at SIRTA Atmospheric Research Observatory, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/9J8K-VQ6N" />
  <attribute name="source" value="surface observation" />
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  <attribute name="date_created" value="2026-06-29T10:45:46.216111Z" />
  <attribute name="date_metadata_modified" value="2026-06-29T10:43:53Z" />
  <attribute name="creator_name" value="Valerie Gros, Nicolas Bonnaire" />
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  <attribute name="contributor_name" value="Nicolas Pascal" />
  <attribute name="contributor_role" value="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="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
  <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
  <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
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  <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth" />
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  <attribute name="ebas_originator" value="&quot;Gros, Valerie, valerie.gros@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;, &quot;Bonnaire, Nicolas, nicolas.bonnaire@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;" />
  <attribute name="ebas_submitter" value="&quot;Pascal, Nicolas, , , , , , , , , &quot;" />
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    <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="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="FR0020R" />
    <attribute name="ebas_platform_code" value="FR0020S" />
    <attribute name="ebas_station_name" value="SIRTA Atmospheric Research Observatory" />
    <attribute name="ebas_station_gaw_name" value="SIRTA" />
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    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="NOx" />
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    <attribute name="ebas_laboratory_code" value="FR01L" />
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    <attribute name="ebas_instrument_serial_number" value="56" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
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    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
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    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR01L, Laboratoire des Sciences du Climat et de l'Environnement, LSCE-CNRS-CEA, CEA Orme des Merisiers, Bat 701, , 91191, Gif-sur-Yvette, France" />
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    <attribute name="ebas_originator" value="&quot;Gros, Valerie, valerie.gros@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;, &quot;Bonnaire, Nicolas, nicolas.bonnaire@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitrogenoxidesmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="nitrogen oxides 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 nitrogen" />
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  <variable name="qc_NOx_ug_N_per_m3_amean" shape="qc_NOx_ug_N_per_m3_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_NOx_ug_N_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_NOx_nmol_per_mol_prec1587" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_nox_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_NOx_nmol_per_mol_prec1587 meta_NOx_nmol_per_mol_prec1587" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_data_level" value="2" />
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    <attribute name="ebas_orig_time_res" value="1mn" />
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    <attribute name="ebas_platform_code" value="FR0020S" />
    <attribute name="ebas_station_name" value="SIRTA Atmospheric Research Observatory" />
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    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
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    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="NOx" />
    <attribute name="ebas_unit" value="nmol/mol" />
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    <attribute name="ebas_laboratory_code" value="FR01L" />
    <attribute name="ebas_instrument_type" value="chemiluminescence_photolytic" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
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  <variable name="qc_NOx_nmol_per_mol_prec1587" shape="qc_NOx_nmol_per_mol_prec1587_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="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nox_expressed_as_nitrogen_in_air" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitrogenoxidesmassconcentration" />
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  <variable name="qc_NOx_ug_N_per_m3_prec1587" shape="qc_NOx_ug_N_per_m3_prec1587_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="missing_value" type="int" value="0" />
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  </variable>
  <variable name="meta_NOx_ug_N_per_m3_prec1587" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_NOx_nmol_per_mol_perc8413" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_nox_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_NOx_nmol_per_mol_perc8413 meta_NOx_nmol_per_mol_perc8413" />
    <attribute name="cell_methods" value="time: percentile:84.13" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2026-06-29T10:43:53.228851Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="percentile:84.13" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="FR0020R" />
    <attribute name="ebas_platform_code" value="FR0020S" />
    <attribute name="ebas_station_name" value="SIRTA Atmospheric Research Observatory" />
    <attribute name="ebas_station_gaw_name" value="SIRTA" />
    <attribute name="ebas_station_other_ids" value="0-250-1001-07151 (WIGOS)" />
    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="NOx" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
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    <attribute name="ebas_instrument_name" value="Teledyne_T200UP" />
    <attribute name="ebas_instrument_manufacturer" value="Teledyne" />
    <attribute name="ebas_instrument_model" value="T200UP" />
    <attribute name="ebas_instrument_serial_number" value="56" />
    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Air intake 1,5 m above the roof, On the roof of LSCE at about 8 meter of ground, PTFE tubing of 28 mm OD in a inox 316 sleeve, the sample line will not be heated, 1 manifold in PTFE, 1 turbo fan for residence time of the sample of few seconds" />
    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
    <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab temperature" />
    <attribute name="ebas_detection_limit_expl" value="Determined by instrument counting statistics" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR01L, Laboratoire des Sciences du Climat et de l'Environnement, LSCE-CNRS-CEA, CEA Orme des Merisiers, Bat 701, , 91191, Gif-sur-Yvette, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCRG" />
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    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Gros, Valerie, valerie.gros@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;, &quot;Bonnaire, Nicolas, nicolas.bonnaire@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Pascal, Nicolas, , , , , , , , , &quot;" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitrogenoxidesamountfraction" />
    <attribute name="actris_variable_preferred_term" value="nitrogen oxides amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/chemiluminescencedetector-photolyticalconverter" />
    <attribute name="actris_instrument_type_preferred_term" value="chemiluminescence detector, photolytical converter" />
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    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_NOx_nmol_per_mol_perc8413" shape="qc_NOx_nmol_per_mol_perc8413_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_NOx_nmol_per_mol_perc8413" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_NOx_ug_N_per_m3_perc8413" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nox_expressed_as_nitrogen_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_NOx_ug_N_per_m3_perc8413 meta_NOx_ug_N_per_m3_perc8413" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_orig_time_res" value="1mn" />
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    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="NOx" />
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    <attribute name="ebas_laboratory_code" value="FR01L" />
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    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
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    <attribute name="ebas_inlet_tube_material" value="Teflon" />
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  <variable name="meta_NOx_ug_N_per_m3_perc8413" shape="metadata_time" type="String">
    <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="mole_fraction_of_nox_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="cell_methods" value="time: standard_deviation" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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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_orig_time_res" value="1mn" />
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    <attribute name="ebas_station_gaw_type" value="O" />
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    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
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    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_laboratory_code" value="FR01L" />
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    <attribute name="ebas_inlet_tube_material" value="Teflon" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitrogenoxidesamountfraction" />
    <attribute name="actris_variable_preferred_term" value="nitrogen oxides amount fraction" />
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    <attribute name="actris_instrument_type_preferred_term" value="chemiluminescence detector, photolytical converter" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCRG" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_NOx_nmol_per_mol_stddev" shape="qc_NOx_nmol_per_mol_stddev_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_NOx_nmol_per_mol_stddev" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_NOx_ug_N_per_m3_stddev" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nox_expressed_as_nitrogen_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_NOx_ug_N_per_m3_stddev meta_NOx_ug_N_per_m3_stddev" />
    <attribute name="cell_methods" value="time: standard_deviation" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2026-06-29T10:43:53.228851Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="stddev" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="FR0020R" />
    <attribute name="ebas_platform_code" value="FR0020S" />
    <attribute name="ebas_station_name" value="SIRTA Atmospheric Research Observatory" />
    <attribute name="ebas_station_gaw_name" value="SIRTA" />
    <attribute name="ebas_station_other_ids" value="0-250-1001-07151 (WIGOS)" />
    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="NOx" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
    <attribute name="ebas_instrument_type" value="chemiluminescence_photolytic" />
    <attribute name="ebas_instrument_name" value="Teledyne_T200UP" />
    <attribute name="ebas_instrument_manufacturer" value="Teledyne" />
    <attribute name="ebas_instrument_model" value="T200UP" />
    <attribute name="ebas_instrument_serial_number" value="56" />
    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_calibration_standard_id" value="Manufacturer: NPL, Batch: 1635" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Air intake 1,5 m above the roof, On the roof of LSCE at about 8 meter of ground, PTFE tubing of 28 mm OD in a inox 316 sleeve, the sample line will not be heated, 1 manifold in PTFE, 1 turbo fan for residence time of the sample of few seconds" />
    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
    <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab temperature" />
    <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 instrument counting statistics" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Determined by standard deviation of measurements" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR01L, Laboratoire des Sciences du Climat et de l'Environnement, LSCE-CNRS-CEA, CEA Orme des Merisiers, Bat 701, , 91191, Gif-sur-Yvette, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, European Monitoring and Evaluation Programme, World Data Centre for Reactive Gases" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for Reactive Gases is the data repository and archive for reactive gases of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Gros, Valerie, valerie.gros@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;, &quot;Bonnaire, Nicolas, nicolas.bonnaire@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Pascal, Nicolas, , , , , , , , , &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: ACTRIS, EMEP, GAW-WDCRG. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitrogenoxidesmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="nitrogen oxides mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedasnitrogen" />
    <attribute name="actris_constraints_preferred_term" value="expressed as nitrogen" />
    <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/chemiluminescencedetector-photolyticalconverter" />
    <attribute name="actris_instrument_type_preferred_term" value="chemiluminescence detector, photolytical converter" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCRG" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_NOx_ug_N_per_m3_stddev" shape="qc_NOx_ug_N_per_m3_stddev_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_NOx_ug_N_per_m3_stddev" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitrogen_dioxide_nmol_per_mol_amean" shape="time" type="double">
    <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" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_nitrogen_dioxide_nmol_per_mol_amean meta_nitrogen_dioxide_nmol_per_mol_amean" />
    <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="2026-06-29T10:43:53.228851Z" />
    <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="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="FR0020R" />
    <attribute name="ebas_platform_code" value="FR0020S" />
    <attribute name="ebas_station_name" value="SIRTA Atmospheric Research Observatory" />
    <attribute name="ebas_station_gaw_name" value="SIRTA" />
    <attribute name="ebas_station_other_ids" value="0-250-1001-07151 (WIGOS)" />
    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_dioxide" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
    <attribute name="ebas_instrument_type" value="chemiluminescence_photolytic" />
    <attribute name="ebas_instrument_name" value="Teledyne_T200UP" />
    <attribute name="ebas_instrument_manufacturer" value="Teledyne" />
    <attribute name="ebas_instrument_model" value="T200UP" />
    <attribute name="ebas_instrument_serial_number" value="56" />
    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_calibration_scale" value="NPL+GPT" />
    <attribute name="ebas_calibration_standard_id" value="Manufacturer: NPL, Batch: 1635" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Air intake 1,5 m above the roof, On the roof of LSCE at about 8 meter of ground, PTFE tubing of 28 mm OD in a inox 316 sleeve, the sample line will not be heated, 1 manifold in PTFE, 1 turbo fan for residence time of the sample of few seconds" />
    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
    <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab temperature" />
    <attribute name="ebas_detection_limit_expl" value="Determined by instrument counting statistics" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR01L, Laboratoire des Sciences du Climat et de l'Environnement, LSCE-CNRS-CEA, CEA Orme des Merisiers, Bat 701, , 91191, Gif-sur-Yvette, France" />
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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="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/chemiluminescencedetector-photolyticalconverter" />
    <attribute name="actris_instrument_type_preferred_term" value="chemiluminescence detector, photolytical converter" />
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    <attribute name="actris_temporal_resolution" value="PT1H" />
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  <variable name="qc_nitrogen_dioxide_nmol_per_mol_amean" shape="qc_nitrogen_dioxide_nmol_per_mol_amean_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_nitrogen_dioxide_nmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitrogen_dioxide_ug_N_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nitrogen_dioxide_expressed_as_nitrogen_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_nitrogen_dioxide_ug_N_per_m3_amean meta_nitrogen_dioxide_ug_N_per_m3_amean" />
    <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="2026-06-29T10:43:53.228851Z" />
    <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="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="FR0020R" />
    <attribute name="ebas_platform_code" value="FR0020S" />
    <attribute name="ebas_station_name" value="SIRTA Atmospheric Research Observatory" />
    <attribute name="ebas_station_gaw_name" value="SIRTA" />
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    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_dioxide" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
    <attribute name="ebas_instrument_type" value="chemiluminescence_photolytic" />
    <attribute name="ebas_instrument_name" value="Teledyne_T200UP" />
    <attribute name="ebas_instrument_manufacturer" value="Teledyne" />
    <attribute name="ebas_instrument_model" value="T200UP" />
    <attribute name="ebas_instrument_serial_number" value="56" />
    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_calibration_scale" value="NPL+GPT" />
    <attribute name="ebas_calibration_standard_id" value="Manufacturer: NPL, Batch: 1635" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Air intake 1,5 m above the roof, On the roof of LSCE at about 8 meter of ground, PTFE tubing of 28 mm OD in a inox 316 sleeve, the sample line will not be heated, 1 manifold in PTFE, 1 turbo fan for residence time of the sample of few seconds" />
    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
    <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab temperature" />
    <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 instrument counting statistics" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Determined by standard deviation of measurements" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR01L, Laboratoire des Sciences du Climat et de l'Environnement, LSCE-CNRS-CEA, CEA Orme des Merisiers, Bat 701, , 91191, Gif-sur-Yvette, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, European Monitoring and Evaluation Programme, World Data Centre for Reactive Gases" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for Reactive Gases is the data repository and archive for reactive gases of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Gros, Valerie, valerie.gros@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;, &quot;Bonnaire, Nicolas, nicolas.bonnaire@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Pascal, Nicolas, , , , , , , , , &quot;" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitrogendioxidemassconcentration" />
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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="mole_fraction_of_nitrogen_dioxide_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Gros, Valerie, valerie.gros@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;, &quot;Bonnaire, Nicolas, nicolas.bonnaire@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Pascal, Nicolas, , , , , , , , , &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: ACTRIS, EMEP, GAW-WDCRG. Request acknowledgement details from data originator" />
    <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="actris_matrix_preferred_term" value="gas 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/chemiluminescencedetector-photolyticalconverter" />
    <attribute name="actris_instrument_type_preferred_term" value="chemiluminescence detector, photolytical converter" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCRG" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_nitrogen_dioxide_nmol_per_mol_perc8413" shape="qc_nitrogen_dioxide_nmol_per_mol_perc8413_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_nitrogen_dioxide_nmol_per_mol_perc8413" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitrogen_dioxide_ug_N_per_m3_perc8413" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nitrogen_dioxide_expressed_as_nitrogen_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_nitrogen_dioxide_ug_N_per_m3_perc8413 meta_nitrogen_dioxide_ug_N_per_m3_perc8413" />
    <attribute name="cell_methods" value="time: percentile:84.13" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2026-06-29T10:43:53.228851Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="percentile:84.13" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="FR0020R" />
    <attribute name="ebas_platform_code" value="FR0020S" />
    <attribute name="ebas_station_name" value="SIRTA Atmospheric Research Observatory" />
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    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_dioxide" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
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    <attribute name="ebas_instrument_name" value="Teledyne_T200UP" />
    <attribute name="ebas_instrument_manufacturer" value="Teledyne" />
    <attribute name="ebas_instrument_model" value="T200UP" />
    <attribute name="ebas_instrument_serial_number" value="56" />
    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
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    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
    <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab temperature" />
    <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_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR01L, Laboratoire des Sciences du Climat et de l'Environnement, LSCE-CNRS-CEA, CEA Orme des Merisiers, Bat 701, , 91191, Gif-sur-Yvette, France" />
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    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitrogendioxidemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="nitrogen 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 nitrogen" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
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    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_nitrogen_dioxide_ug_N_per_m3_perc8413" shape="qc_nitrogen_dioxide_ug_N_per_m3_perc8413_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="units" value="1" />
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  <variable name="meta_nitrogen_dioxide_ug_N_per_m3_perc8413" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitrogen_dioxide_nmol_per_mol_stddev" shape="time" type="double">
    <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" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_nitrogen_dioxide_nmol_per_mol_stddev meta_nitrogen_dioxide_nmol_per_mol_stddev" />
    <attribute name="cell_methods" value="time: standard_deviation" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_station_gaw_type" value="O" />
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    <attribute name="ebas_station_altitude" value="162.0 m" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_dioxide" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
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    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
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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="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
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  <variable name="meta_nitrogen_dioxide_nmol_per_mol_stddev" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitrogen_dioxide_ug_N_per_m3_stddev" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nitrogen_dioxide_expressed_as_nitrogen_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_nitrogen_dioxide_ug_N_per_m3_stddev meta_nitrogen_dioxide_ug_N_per_m3_stddev" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="stddev" />
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    <attribute name="ebas_orig_time_res" value="1mn" />
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    <attribute name="ebas_station_land_use" value="Agricultural" />
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    <attribute name="ebas_station_gaw_type" value="O" />
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    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_dioxide" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
    <attribute name="ebas_instrument_type" value="chemiluminescence_photolytic" />
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    <attribute name="ebas_instrument_model" value="T200UP" />
    <attribute name="ebas_instrument_serial_number" value="56" />
    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
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    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
    <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab temperature" />
    <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 instrument counting statistics" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Determined by standard deviation of measurements" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR01L, Laboratoire des Sciences du Climat et de l'Environnement, LSCE-CNRS-CEA, CEA Orme des Merisiers, Bat 701, , 91191, Gif-sur-Yvette, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, European Monitoring and Evaluation Programme, World Data Centre for Reactive Gases" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for Reactive Gases is the data repository and archive for reactive gases of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Gros, Valerie, valerie.gros@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;, &quot;Bonnaire, Nicolas, nicolas.bonnaire@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Pascal, Nicolas, , , , , , , , , &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: ACTRIS, EMEP, GAW-WDCRG. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitrogendioxidemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="nitrogen dioxide mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedasnitrogen" />
    <attribute name="actris_constraints_preferred_term" value="expressed as nitrogen" />
    <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/chemiluminescencedetector-photolyticalconverter" />
    <attribute name="actris_instrument_type_preferred_term" value="chemiluminescence detector, photolytical converter" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCRG" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_nitrogen_dioxide_ug_N_per_m3_stddev" shape="qc_nitrogen_dioxide_ug_N_per_m3_stddev_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_nitrogen_dioxide_ug_N_per_m3_stddev" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitrogen_monoxide_nmol_per_mol_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_nitrogen_monoxide_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_nitrogen_monoxide_nmol_per_mol_amean meta_nitrogen_monoxide_nmol_per_mol_amean" />
    <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="2026-06-29T10:43:53.228851Z" />
    <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="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="FR0020R" />
    <attribute name="ebas_platform_code" value="FR0020S" />
    <attribute name="ebas_station_name" value="SIRTA Atmospheric Research Observatory" />
    <attribute name="ebas_station_gaw_name" value="SIRTA" />
    <attribute name="ebas_station_other_ids" value="0-250-1001-07151 (WIGOS)" />
    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_monoxide" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
    <attribute name="ebas_instrument_type" value="chemiluminescence_photolytic" />
    <attribute name="ebas_instrument_name" value="Teledyne_T200UP" />
    <attribute name="ebas_instrument_manufacturer" value="Teledyne" />
    <attribute name="ebas_instrument_model" value="T200UP" />
    <attribute name="ebas_instrument_serial_number" value="56" />
    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="Manufacturer: NPL, Batch: 1635" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Air intake 1,5 m above the roof, On the roof of LSCE at about 8 meter of ground, PTFE tubing of 28 mm OD in a inox 316 sleeve, the sample line will not be heated, 1 manifold in PTFE, 1 turbo fan for residence time of the sample of few seconds" />
    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
    <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab temperature" />
    <attribute name="ebas_detection_limit_expl" value="Determined by instrument counting statistics" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Determined by standard deviation of measurements" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR01L, Laboratoire des Sciences du Climat et de l'Environnement, LSCE-CNRS-CEA, CEA Orme des Merisiers, Bat 701, , 91191, Gif-sur-Yvette, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, European Monitoring and Evaluation Programme, World Data Centre for Reactive Gases" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for Reactive Gases is the data repository and archive for reactive gases of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Gros, Valerie, valerie.gros@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;, &quot;Bonnaire, Nicolas, nicolas.bonnaire@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Pascal, Nicolas, , , , , , , , , &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: ACTRIS, EMEP, GAW-WDCRG. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitricoxideamountfraction" />
    <attribute name="actris_variable_preferred_term" value="nitric oxide amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas 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/chemiluminescencedetector-photolyticalconverter" />
    <attribute name="actris_instrument_type_preferred_term" value="chemiluminescence detector, photolytical converter" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCRG" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_nitrogen_monoxide_nmol_per_mol_amean" shape="qc_nitrogen_monoxide_nmol_per_mol_amean_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_nitrogen_monoxide_nmol_per_mol_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitrogen_monoxide_ug_N_per_m3_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nitrogen_monoxide_expressed_as_nitrogen_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_nitrogen_monoxide_ug_N_per_m3_amean meta_nitrogen_monoxide_ug_N_per_m3_amean" />
    <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="2026-06-29T10:43:53.228851Z" />
    <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="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="FR0020R" />
    <attribute name="ebas_platform_code" value="FR0020S" />
    <attribute name="ebas_station_name" value="SIRTA Atmospheric Research Observatory" />
    <attribute name="ebas_station_gaw_name" value="SIRTA" />
    <attribute name="ebas_station_other_ids" value="0-250-1001-07151 (WIGOS)" />
    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_monoxide" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
    <attribute name="ebas_instrument_type" value="chemiluminescence_photolytic" />
    <attribute name="ebas_instrument_name" value="Teledyne_T200UP" />
    <attribute name="ebas_instrument_manufacturer" value="Teledyne" />
    <attribute name="ebas_instrument_model" value="T200UP" />
    <attribute name="ebas_instrument_serial_number" value="56" />
    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_calibration_scale" value="NPL" />
    <attribute name="ebas_calibration_standard_id" value="Manufacturer: NPL, Batch: 1635" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Air intake 1,5 m above the roof, On the roof of LSCE at about 8 meter of ground, PTFE tubing of 28 mm OD in a inox 316 sleeve, the sample line will not be heated, 1 manifold in PTFE, 1 turbo fan for residence time of the sample of few seconds" />
    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
    <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab temperature" />
    <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 instrument counting statistics" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Determined by standard deviation of measurements" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR01L, Laboratoire des Sciences du Climat et de l'Environnement, LSCE-CNRS-CEA, CEA Orme des Merisiers, Bat 701, , 91191, Gif-sur-Yvette, France" />
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    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, European Monitoring and Evaluation Programme, World Data Centre for Reactive Gases" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for Reactive Gases is the data repository and archive for reactive gases of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Gros, Valerie, valerie.gros@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;, &quot;Bonnaire, Nicolas, nicolas.bonnaire@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Pascal, Nicolas, , , , , , , , , &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: ACTRIS, EMEP, GAW-WDCRG. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitricoxidemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="nitric oxide mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedasnitrogen" />
    <attribute name="actris_constraints_preferred_term" value="expressed as nitrogen" />
    <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/chemiluminescencedetector-photolyticalconverter" />
    <attribute name="actris_instrument_type_preferred_term" value="chemiluminescence detector, photolytical converter" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCRG" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_nitrogen_monoxide_ug_N_per_m3_amean" shape="qc_nitrogen_monoxide_ug_N_per_m3_amean_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_nitrogen_monoxide_ug_N_per_m3_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitrogen_monoxide_nmol_per_mol_prec1587" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_nitrogen_monoxide_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_nitrogen_monoxide_nmol_per_mol_prec1587 meta_nitrogen_monoxide_nmol_per_mol_prec1587" />
    <attribute name="cell_methods" value="time: percentile:15.87" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2026-06-29T10:43:53.228851Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="percentile:15.87" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="FR0020R" />
    <attribute name="ebas_platform_code" value="FR0020S" />
    <attribute name="ebas_station_name" value="SIRTA Atmospheric Research Observatory" />
    <attribute name="ebas_station_gaw_name" value="SIRTA" />
    <attribute name="ebas_station_other_ids" value="0-250-1001-07151 (WIGOS)" />
    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_monoxide" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
    <attribute name="ebas_instrument_type" value="chemiluminescence_photolytic" />
    <attribute name="ebas_instrument_name" value="Teledyne_T200UP" />
    <attribute name="ebas_instrument_manufacturer" value="Teledyne" />
    <attribute name="ebas_instrument_model" value="T200UP" />
    <attribute name="ebas_instrument_serial_number" value="56" />
    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
    <attribute name="ebas_standard_method" value="None" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
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    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
    <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab temperature" />
    <attribute name="ebas_detection_limit_expl" value="Determined by instrument counting statistics" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Determined by standard deviation of measurements" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR01L, Laboratoire des Sciences du Climat et de l'Environnement, LSCE-CNRS-CEA, CEA Orme des Merisiers, Bat 701, , 91191, Gif-sur-Yvette, France" />
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    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Gros, Valerie, valerie.gros@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;, &quot;Bonnaire, Nicolas, nicolas.bonnaire@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Pascal, Nicolas, , , , , , , , , &quot;" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitricoxideamountfraction" />
    <attribute name="actris_variable_preferred_term" value="nitric oxide amount fraction" />
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    <attribute name="actris_matrix_preferred_term" value="gas phase" />
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    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/chemiluminescencedetector-photolyticalconverter" />
    <attribute name="actris_instrument_type_preferred_term" value="chemiluminescence detector, photolytical converter" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCRG" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_nitrogen_monoxide_nmol_per_mol_prec1587" shape="qc_nitrogen_monoxide_nmol_per_mol_prec1587_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_nitrogen_monoxide_nmol_per_mol_prec1587" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitrogen_monoxide_ug_N_per_m3_prec1587" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nitrogen_monoxide_expressed_as_nitrogen_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_nitrogen_monoxide_ug_N_per_m3_prec1587 meta_nitrogen_monoxide_ug_N_per_m3_prec1587" />
    <attribute name="cell_methods" value="time: percentile:15.87" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2026-06-29T10:43:53.228851Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="percentile:15.87" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="FR0020R" />
    <attribute name="ebas_platform_code" value="FR0020S" />
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    <attribute name="ebas_station_gaw_name" value="SIRTA" />
    <attribute name="ebas_station_other_ids" value="0-250-1001-07151 (WIGOS)" />
    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_monoxide" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
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    <attribute name="ebas_instrument_manufacturer" value="Teledyne" />
    <attribute name="ebas_instrument_model" value="T200UP" />
    <attribute name="ebas_instrument_serial_number" value="56" />
    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
    <attribute name="ebas_standard_method" value="None" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
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    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
    <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab temperature" />
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    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitricoxidemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="nitric oxide 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 nitrogen" />
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    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="units" value="1" />
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  <variable name="meta_nitrogen_monoxide_ug_N_per_m3_prec1587" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitrogen_monoxide_nmol_per_mol_perc8413" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_nitrogen_monoxide_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="cell_methods" value="time: percentile:84.13" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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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_orig_time_res" value="1mn" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_monoxide" />
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    <attribute name="ebas_laboratory_code" value="FR01L" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitricoxideamountfraction" />
    <attribute name="actris_variable_preferred_term" value="nitric oxide amount fraction" />
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  <variable name="qc_nitrogen_monoxide_nmol_per_mol_perc8413" shape="qc_nitrogen_monoxide_nmol_per_mol_perc8413_flags time" type="int">
    <attribute name="units" value="1" />
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    <attribute name="missing_value" type="int" value="0" />
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  <variable name="meta_nitrogen_monoxide_nmol_per_mol_perc8413" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitrogen_monoxide_ug_N_per_m3_perc8413" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nitrogen_monoxide_expressed_as_nitrogen_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_nitrogen_monoxide_ug_N_per_m3_perc8413 meta_nitrogen_monoxide_ug_N_per_m3_perc8413" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
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    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_monoxide" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
    <attribute name="ebas_instrument_type" value="chemiluminescence_photolytic" />
    <attribute name="ebas_instrument_name" value="Teledyne_T200UP" />
    <attribute name="ebas_instrument_manufacturer" value="Teledyne" />
    <attribute name="ebas_instrument_model" value="T200UP" />
    <attribute name="ebas_instrument_serial_number" value="56" />
    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_calibration_standard_id" value="Manufacturer: NPL, Batch: 1635" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Air intake 1,5 m above the roof, On the roof of LSCE at about 8 meter of ground, PTFE tubing of 28 mm OD in a inox 316 sleeve, the sample line will not be heated, 1 manifold in PTFE, 1 turbo fan for residence time of the sample of few seconds" />
    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
    <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab temperature" />
    <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 instrument counting statistics" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Determined by standard deviation of measurements" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR01L, Laboratoire des Sciences du Climat et de l'Environnement, LSCE-CNRS-CEA, CEA Orme des Merisiers, Bat 701, , 91191, Gif-sur-Yvette, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, European Monitoring and Evaluation Programme, World Data Centre for Reactive Gases" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for Reactive Gases is the data repository and archive for reactive gases of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Gros, Valerie, valerie.gros@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;, &quot;Bonnaire, Nicolas, nicolas.bonnaire@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Pascal, Nicolas, , , , , , , , , &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: ACTRIS, EMEP, GAW-WDCRG. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitricoxidemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="nitric oxide mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedasnitrogen" />
    <attribute name="actris_constraints_preferred_term" value="expressed as nitrogen" />
    <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/chemiluminescencedetector-photolyticalconverter" />
    <attribute name="actris_instrument_type_preferred_term" value="chemiluminescence detector, photolytical converter" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCRG" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_nitrogen_monoxide_ug_N_per_m3_perc8413" shape="qc_nitrogen_monoxide_ug_N_per_m3_perc8413_flags time" type="int">
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
  </variable>
  <variable name="meta_nitrogen_monoxide_ug_N_per_m3_perc8413" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitrogen_monoxide_nmol_per_mol_stddev" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mole_fraction_of_nitrogen_monoxide_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="nmol/mol" />
    <attribute name="ancillary_variables" value="qc_nitrogen_monoxide_nmol_per_mol_stddev meta_nitrogen_monoxide_nmol_per_mol_stddev" />
    <attribute name="cell_methods" value="time: standard_deviation" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2026-06-29T10:43:53.228851Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="stddev" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="FR0020R" />
    <attribute name="ebas_platform_code" value="FR0020S" />
    <attribute name="ebas_station_name" value="SIRTA Atmospheric Research Observatory" />
    <attribute name="ebas_station_gaw_name" value="SIRTA" />
    <attribute name="ebas_station_other_ids" value="0-250-1001-07151 (WIGOS)" />
    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_monoxide" />
    <attribute name="ebas_unit" value="nmol/mol" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
    <attribute name="ebas_instrument_type" value="chemiluminescence_photolytic" />
    <attribute name="ebas_instrument_name" value="Teledyne_T200UP" />
    <attribute name="ebas_instrument_manufacturer" value="Teledyne" />
    <attribute name="ebas_instrument_model" value="T200UP" />
    <attribute name="ebas_instrument_serial_number" value="56" />
    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_calibration_standard_id" value="Manufacturer: NPL, Batch: 1635" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Air intake 1,5 m above the roof, On the roof of LSCE at about 8 meter of ground, PTFE tubing of 28 mm OD in a inox 316 sleeve, the sample line will not be heated, 1 manifold in PTFE, 1 turbo fan for residence time of the sample of few seconds" />
    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
    <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab temperature" />
    <attribute name="ebas_detection_limit_expl" value="Determined by instrument counting statistics" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Determined by standard deviation of measurements" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR01L, Laboratoire des Sciences du Climat et de l'Environnement, LSCE-CNRS-CEA, CEA Orme des Merisiers, Bat 701, , 91191, Gif-sur-Yvette, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, European Monitoring and Evaluation Programme, World Data Centre for Reactive Gases" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for Reactive Gases is the data repository and archive for reactive gases of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Gros, Valerie, valerie.gros@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;, &quot;Bonnaire, Nicolas, nicolas.bonnaire@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Pascal, Nicolas, , , , , , , , , &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: ACTRIS, EMEP, GAW-WDCRG. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitricoxideamountfraction" />
    <attribute name="actris_variable_preferred_term" value="nitric oxide amount fraction" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas 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/chemiluminescencedetector-photolyticalconverter" />
    <attribute name="actris_instrument_type_preferred_term" value="chemiluminescence detector, photolytical converter" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCRG" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_nitrogen_monoxide_nmol_per_mol_stddev" shape="qc_nitrogen_monoxide_nmol_per_mol_stddev_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_nitrogen_monoxide_nmol_per_mol_stddev" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_nitrogen_monoxide_ug_N_per_m3_stddev" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_nitrogen_monoxide_expressed_as_nitrogen_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_nitrogen_monoxide_ug_N_per_m3_stddev meta_nitrogen_monoxide_ug_N_per_m3_stddev" />
    <attribute name="cell_methods" value="time: standard_deviation" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2026-06-29T10:43:53.228851Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="stddev" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="FR0020R" />
    <attribute name="ebas_platform_code" value="FR0020S" />
    <attribute name="ebas_station_name" value="SIRTA Atmospheric Research Observatory" />
    <attribute name="ebas_station_gaw_name" value="SIRTA" />
    <attribute name="ebas_station_other_ids" value="0-250-1001-07151 (WIGOS)" />
    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="O" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.7089" />
    <attribute name="ebas_station_longitude" type="double" value="2.1487" />
    <attribute name="ebas_station_altitude" value="162.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="nitrogen_monoxide" />
    <attribute name="ebas_unit" value="ug N/m3" />
    <attribute name="ebas_matrix" value="air" />
    <attribute name="ebas_laboratory_code" value="FR01L" />
    <attribute name="ebas_instrument_type" value="chemiluminescence_photolytic" />
    <attribute name="ebas_instrument_name" value="Teledyne_T200UP" />
    <attribute name="ebas_instrument_manufacturer" value="Teledyne" />
    <attribute name="ebas_instrument_model" value="T200UP" />
    <attribute name="ebas_instrument_serial_number" value="56" />
    <attribute name="ebas_method_ref" value="FR01L_NOx_analysis_DE20L_NOx_corr_offset" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_calibration_standard_id" value="Manufacturer: NPL, Batch: 1635" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Air intake 1,5 m above the roof, On the roof of LSCE at about 8 meter of ground, PTFE tubing of 28 mm OD in a inox 316 sleeve, the sample line will not be heated, 1 manifold in PTFE, 1 turbo fan for residence time of the sample of few seconds" />
    <attribute name="ebas_inlet_tube_material" value="Teflon" />
    <attribute name="ebas_ozone_correction" value="Not corrected for reaction with O3 in the inlet" />
    <attribute name="ebas_water_vapor_correction" value="Not corrected for water vapor quenching in CLD" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab temperature" />
    <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 instrument counting statistics" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Determined by standard deviation of measurements" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FR01L, Laboratoire des Sciences du Climat et de l'Environnement, LSCE-CNRS-CEA, CEA Orme des Merisiers, Bat 701, , 91191, Gif-sur-Yvette, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, European Monitoring and Evaluation Programme, World Data Centre for Reactive Gases" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for Reactive Gases is the data repository and archive for reactive gases of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Kjetil Tørseth" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, kt@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Gros, Valerie, valerie.gros@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;, &quot;Bonnaire, Nicolas, nicolas.bonnaire@lsce.ipsl.fr, Laboratoire des Sciences du Climat et de l'Environnement, LSCE, SIRTA, CEA Orme des Merisiers, Bat 701, 91191, Gif-sur-Yvette, France&quot;" />
    <attribute name="ebas_submitter" value="&quot;Pascal, Nicolas, , , , , , , , , &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: ACTRIS, EMEP, GAW-WDCRG. Request acknowledgement details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/nitricoxidemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="nitric oxide mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/gasphase" />
    <attribute name="actris_matrix_preferred_term" value="gas phase" />
    <attribute name="actris_constraints_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/expressedasnitrogen" />
    <attribute name="actris_constraints_preferred_term" value="expressed as nitrogen" />
    <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/chemiluminescencedetector-photolyticalconverter" />
    <attribute name="actris_instrument_type_preferred_term" value="chemiluminescence detector, photolytical converter" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/EMEP, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCRG" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, EMEP, GAW-WDCRG" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_nitrogen_monoxide_ug_N_per_m3_stddev" shape="qc_nitrogen_monoxide_ug_N_per_m3_stddev_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_nitrogen_monoxide_ug_N_per_m3_stddev" 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>
