<?xml version="1.0" encoding="UTF-8"?>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2" location="Not provided because of security concerns.">
  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Aerosol_absorption_coefficient at Observatoire Perenne de l'Environnement" />
  <attribute name="summary" value="Aerosol_absorption_coefficient at Observatoire Perenne de l'Environnement. These measurements are gathered as a part of the following projects ACTRIS, GAW-WDCA and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['aerosol_absorption_coefficient in aerosol (volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles)']" />
  <attribute name="keywords" value="&quot;Observatoire Perenne de l'Environnement&quot; FR0022R aerosol_absorption_coefficient aerosol ACTRIS GAW-WDCA volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles" />
  <attribute name="id" value="NRPP-59KP.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="ACTRIS, GAW-WDCA" />
  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/NRPP-59KP" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Laj, P., Conil, S., Nicolas, J., ACTRIS, GAW-WDCA, 2017, Aerosol_absorption_coefficient at Observatoire Perenne de l'Environnement, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/NRPP-59KP" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="FR11L &quot;Agence nationale pour la gestion des déchets radioactifs&quot; Andra &quot;1/7 rue Jean Monnet&quot; 92298 &quot;CHATENAY-MALABRY Cedex&quot; France" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2017-03-21T15:20:51.890000Z" />
  <attribute name="date_metadata_modified" value="2017-03-21T15:20:51Z" />
  <attribute name="creator_name" value="Paolo Laj, Sebastien Conil, Jose Nicolas" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="paolo.laj@univ-grenoble-alpes.fr, Sebastien.Conil@andra.fr, j.nicolas@opgc.univ-bpclermont.fr" />
  <attribute name="creator_institution" value="&quot;Laboratoire de Glaciologie et Geophysique de l'Environnement, Laboratoire d'aerologie, LGGE&quot;, &quot;Observatoire Perenne de l'Environnement, Centre de Meuse/Haute-Marne, ANDRA/OPE&quot;, &quot;Observatoire de physique du Globe de Clermont-Ferrand, OPGC&quot;" />
  <attribute name="contributor_name" value="Nicolas Pascal" />
  <attribute name="contributor_role" value="data submitter" />
  <attribute name="publisher_type" value="institution" />
  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_institution" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_email" value="ebas@nilu.no" />
  <attribute name="publisher_url" value="https://www.nilu.no/" />
  <attribute name="geospatial_bounds" value="MULTIPOINT Z ((5.505 48.562 392), (5.5055555555555555 48.562222222222225 392))" />
  <attribute name="geospatial_lat_min" type="double" value="48.562" />
  <attribute name="geospatial_lat_max" type="double" value="48.562222222222225" />
  <attribute name="geospatial_lon_min" type="double" value="5.505" />
  <attribute name="geospatial_lon_max" type="double" value="5.5055555555555555" />
  <attribute name="geospatial_vertical_min" type="double" value="392.0" />
  <attribute name="geospatial_vertical_max" type="double" value="392.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="time_coverage_start" value="2012-01-01T00:00:00Z" />
  <attribute name="time_coverage_end" value="2017-01-01T00:00:00Z" />
  <attribute name="time_coverage_duration" value="P0005-00-00T00:00:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-00T01:00:00" />
  <attribute name="timezone" value="UTC" />
  <attribute name="ebas_data_definition" value="EBAS_1.1" />
  <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="ebas_citation" value="Laj, P., Conil, S., Nicolas, J., ACTRIS, GAW-WDCA, 2017, Aerosol_absorption_coefficient at Observatoire Perenne de l'Environnement, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/NRPP-59KP" />
  <attribute name="ebas_set_type_code" value="TU" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="NRPP-59KP.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/NRPP-59KP" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/NRPP-59KP" />
  <attribute name="ebas_file_creation" value="2026-05-08T20:55:24.858787Z" />
  <attribute name="ebas_export_state" value="2017-03-21T15:20:51.890000Z" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="2012-01-01T00:00:00.000000Z" />
  <attribute name="ebas_revision_date" value="2017-03-21T15:20:51.890000Z" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="5y" />
  <attribute name="ebas_resolution_code" value="1h" />
  <attribute name="ebas_sample_duration" value="1h" />
  <attribute name="ebas_station_code" value="FR0022R" />
  <attribute name="ebas_platform_code" value="FR0022S" />
  <attribute name="ebas_station_name" value="Observatoire Perenne de l'Environnement" />
  <attribute name="ebas_station_gaw_id" value="OPE" />
  <attribute name="ebas_station_land_use" value="Agricultural" />
  <attribute name="ebas_station_setting" value="Rural" />
  <attribute name="ebas_station_wmo_region" type="long" value="6" />
  <attribute name="ebas_station_latitude" type="double" value="48.562222222222225" />
  <attribute name="ebas_station_longitude" type="double" value="5.5055555555555555" />
  <attribute name="ebas_station_altitude" value="392.0 m" />
  <attribute name="ebas_measurement_latitude" type="double" value="48.562" />
  <attribute name="ebas_measurement_longitude" type="double" value="5.505" />
  <attribute name="ebas_measurement_altitude" value="392.0 m" />
  <attribute name="ebas_measurement_height" value="4.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
  <attribute name="ebas_unit" value="1/Mm" />
  <attribute name="ebas_matrix" value="aerosol" />
  <attribute name="ebas_laboratory_code" value="FR11L" />
  <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
  <attribute name="ebas_instrument_name" value="Magee_AE31_OPE_ambient" />
  <attribute name="ebas_instrument_manufacturer" value="Magee" />
  <attribute name="ebas_instrument_model" value="AE31" />
  <attribute name="ebas_method_ref" value="FR11L_aethalometer_Magee_AE31_lev0" />
  <attribute name="ebas_standard_method" value="SOP=GAW227" />
  <attribute name="ebas_inlet_type" value="Impactor--direct" />
  <attribute name="ebas_humidity_temperaure_control" value="None" />
  <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="instrument characteristics, information from Magee Scientific" />
  <attribute name="ebas_measurement_uncertainty" value="25.0 %" />
  <attribute name="ebas_measurement_uncertainty_expl" value="typical value of unit-to-unit variability as estimated by Bond et al., 1999." />
  <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="FR11L, Agence nationale pour la gestion des déchets radioactifs, Andra, , 1/7 rue Jean Monnet, , 92298, CHATENAY-MALABRY Cedex, France" />
  <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
  <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
  <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;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
  <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Laj, Paolo, paolo.laj@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de l'Environnement, LGGE, Laboratoire d'aerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin d'Heres cedex, France&quot;, &quot;Conil, Sebastien, Sebastien.Conil@andra.fr, Observatoire Perenne de l'Environnement, ANDRA/OPE, Centre de Meuse/Haute-Marne, RD960, CP9, 55290, Bure, France&quot;, &quot;Nicolas, Jose, j.nicolas@opgc.univ-bpclermont.fr, Observatoire de physique du Globe de Clermont-Ferrand, OPGC, , Campus des Cezeaux, 24 avenue des Landais, 63177, Aubiere, 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, GAW-WDCA. For using this data for any kind of publications, you must contact Paolo Laj and Sebastien Conil, in terms of acknowledgment" />
  <attribute name="_NCProperties" value="version=2,netcdf=4.9.3,hdf5=1.14.6" />
  <attribute name="Metadata_Conventions" value="Unidata Dataset Discovery v1.0" />
  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
  <attribute name="standard_name_vocabulary" value="CF-1.7, ACDD-1.3" />
  <attribute name="history" value="None" />
  <attribute name="creator_url" value="ebas.nilu.no" />
  <attribute name="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="time" length="43848" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="5" />
  <dimension name="d_Wavelength" length="7" />
  <dimension name="qc_aerosol_absorption_coefficient_amean_flags" length="1" />
  <dimension name="qc_aerosol_absorption_coefficient_prec1587_flags" length="1" />
  <dimension name="qc_aerosol_absorption_coefficient_perc8413_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2012-01-01T00:30:00Z" />
    <attribute name="time_coverage_end" value="2016-12-31T23:30:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="3600.0" />
    <attribute name="time_coverage_duration" value="P0Y0M1826DT23H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-05-18" />
    <attribute name="nciso_version" value="2.4.8" />
  </group>
  <variable name="time_bnds" shape="time tbnds" type="double">
    <attribute name="long_name" value="time bounds for measurement" />
  </variable>
  <variable name="metadata_time_bnds" shape="metadata_time tbnds" type="double">
    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
  </variable>
  <variable name="v_aerosol_absorption_coefficient_amean" shape="d_Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="qc_aerosol_absorption_coefficient_amean meta_aerosol_absorption_coefficient_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="2017-03-21T15:20:51.890000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_station_code" value="FR0022R" />
    <attribute name="ebas_platform_code" value="FR0022S" />
    <attribute name="ebas_station_name" value="Observatoire Perenne de l'Environnement" />
    <attribute name="ebas_station_gaw_id" value="OPE" />
    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.562222222222225" />
    <attribute name="ebas_station_longitude" type="double" value="5.5055555555555555" />
    <attribute name="ebas_station_altitude" value="392.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="48.562" />
    <attribute name="ebas_measurement_longitude" type="double" value="5.505" />
    <attribute name="ebas_measurement_altitude" value="392.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="FR11L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee_AE31_OPE_ambient" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_method_ref" value="FR11L_aethalometer_Magee_AE31_lev0" />
    <attribute name="ebas_standard_method" value="SOP=GAW227" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <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="instrument characteristics, information from Magee Scientific" />
    <attribute name="ebas_measurement_uncertainty" value="25.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="typical value of unit-to-unit variability as estimated by Bond et al., 1999." />
    <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="FR11L, Agence nationale pour la gestion des déchets radioactifs, Andra, , 1/7 rue Jean Monnet, , 92298, CHATENAY-MALABRY Cedex, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <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;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Laj, Paolo, paolo.laj@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de l'Environnement, LGGE, Laboratoire d'aerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin d'Heres cedex, France&quot;, &quot;Conil, Sebastien, Sebastien.Conil@andra.fr, Observatoire Perenne de l'Environnement, ANDRA/OPE, Centre de Meuse/Haute-Marne, RD960, CP9, 55290, Bure, France&quot;, &quot;Nicolas, Jose, j.nicolas@opgc.univ-bpclermont.fr, Observatoire de physique du Globe de Clermont-Ferrand, OPGC, , Campus des Cezeaux, 24 avenue des Landais, 63177, Aubiere, 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, GAW-WDCA. For using this data for any kind of publications, you must contact Paolo Laj and Sebastien Conil, in terms of acknowledgment" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlelightabsorptioncoefficient" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle light absorption coefficient" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/filterabsorptionphotometer" />
    <attribute name="actris_instrument_type_preferred_term" value="filter absorption photometer" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCA" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, GAW-WDCA" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_aerosol_absorption_coefficient_amean" shape="d_Wavelength qc_aerosol_absorption_coefficient_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_aerosol_absorption_coefficient_amean" shape="d_Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_aerosol_absorption_coefficient_prec1587" shape="d_Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="qc_aerosol_absorption_coefficient_prec1587 meta_aerosol_absorption_coefficient_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="2017-03-21T15:20:51.890000Z" />
    <attribute name="ebas_version" value="1" />
    <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_station_code" value="FR0022R" />
    <attribute name="ebas_platform_code" value="FR0022S" />
    <attribute name="ebas_station_name" value="Observatoire Perenne de l'Environnement" />
    <attribute name="ebas_station_gaw_id" value="OPE" />
    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.562222222222225" />
    <attribute name="ebas_station_longitude" type="double" value="5.5055555555555555" />
    <attribute name="ebas_station_altitude" value="392.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="48.562" />
    <attribute name="ebas_measurement_longitude" type="double" value="5.505" />
    <attribute name="ebas_measurement_altitude" value="392.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="FR11L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee_AE31_OPE_ambient" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_method_ref" value="FR11L_aethalometer_Magee_AE31_lev0" />
    <attribute name="ebas_standard_method" value="SOP=GAW227" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <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="instrument characteristics, information from Magee Scientific" />
    <attribute name="ebas_measurement_uncertainty" value="25.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="typical value of unit-to-unit variability as estimated by Bond et al., 1999." />
    <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="FR11L, Agence nationale pour la gestion des déchets radioactifs, Andra, , 1/7 rue Jean Monnet, , 92298, CHATENAY-MALABRY Cedex, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <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;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Laj, Paolo, paolo.laj@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de l'Environnement, LGGE, Laboratoire d'aerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin d'Heres cedex, France&quot;, &quot;Conil, Sebastien, Sebastien.Conil@andra.fr, Observatoire Perenne de l'Environnement, ANDRA/OPE, Centre de Meuse/Haute-Marne, RD960, CP9, 55290, Bure, France&quot;, &quot;Nicolas, Jose, j.nicolas@opgc.univ-bpclermont.fr, Observatoire de physique du Globe de Clermont-Ferrand, OPGC, , Campus des Cezeaux, 24 avenue des Landais, 63177, Aubiere, 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, GAW-WDCA. For using this data for any kind of publications, you must contact Paolo Laj and Sebastien Conil, in terms of acknowledgment" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlelightabsorptioncoefficient" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle light absorption coefficient" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/filterabsorptionphotometer" />
    <attribute name="actris_instrument_type_preferred_term" value="filter absorption photometer" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCA" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, GAW-WDCA" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_aerosol_absorption_coefficient_prec1587" shape="d_Wavelength qc_aerosol_absorption_coefficient_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_aerosol_absorption_coefficient_prec1587" shape="d_Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_aerosol_absorption_coefficient_perc8413" shape="d_Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="volume_absorption_coefficient_in_air_due_to_dried_aerosol_particles" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="qc_aerosol_absorption_coefficient_perc8413 meta_aerosol_absorption_coefficient_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="2017-03-21T15:20:51.890000Z" />
    <attribute name="ebas_version" value="1" />
    <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_station_code" value="FR0022R" />
    <attribute name="ebas_platform_code" value="FR0022S" />
    <attribute name="ebas_station_name" value="Observatoire Perenne de l'Environnement" />
    <attribute name="ebas_station_gaw_id" value="OPE" />
    <attribute name="ebas_station_land_use" value="Agricultural" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="48.562222222222225" />
    <attribute name="ebas_station_longitude" type="double" value="5.5055555555555555" />
    <attribute name="ebas_station_altitude" value="392.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="48.562" />
    <attribute name="ebas_measurement_longitude" type="double" value="5.505" />
    <attribute name="ebas_measurement_altitude" value="392.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="FR11L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee_AE31_OPE_ambient" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_method_ref" value="FR11L_aethalometer_Magee_AE31_lev0" />
    <attribute name="ebas_standard_method" value="SOP=GAW227" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <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="instrument characteristics, information from Magee Scientific" />
    <attribute name="ebas_measurement_uncertainty" value="25.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="typical value of unit-to-unit variability as estimated by Bond et al., 1999." />
    <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="FR11L, Agence nationale pour la gestion des déchets radioactifs, Andra, , 1/7 rue Jean Monnet, , 92298, CHATENAY-MALABRY Cedex, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <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;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Laj, Paolo, paolo.laj@univ-grenoble-alpes.fr, Laboratoire de Glaciologie et Geophysique de l'Environnement, LGGE, Laboratoire d'aerologie, Chimie Atmospherique Neige et Glace, 54 rue Moliere BP 96, F-38402, Saint-Martin d'Heres cedex, France&quot;, &quot;Conil, Sebastien, Sebastien.Conil@andra.fr, Observatoire Perenne de l'Environnement, ANDRA/OPE, Centre de Meuse/Haute-Marne, RD960, CP9, 55290, Bure, France&quot;, &quot;Nicolas, Jose, j.nicolas@opgc.univ-bpclermont.fr, Observatoire de physique du Globe de Clermont-Ferrand, OPGC, , Campus des Cezeaux, 24 avenue des Landais, 63177, Aubiere, 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, GAW-WDCA. For using this data for any kind of publications, you must contact Paolo Laj and Sebastien Conil, in terms of acknowledgment" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlelightabsorptioncoefficient" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle light absorption coefficient" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/filterabsorptionphotometer" />
    <attribute name="actris_instrument_type_preferred_term" value="filter absorption photometer" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCA" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, GAW-WDCA" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_aerosol_absorption_coefficient_perc8413" shape="d_Wavelength qc_aerosol_absorption_coefficient_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_aerosol_absorption_coefficient_perc8413" shape="d_Wavelength 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>
  <variable name="d_Wavelength" shape="d_Wavelength" type="double" />
</netcdf>
