<?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="OC/EC at Puy de Dôme" />
  <attribute name="keywords" value="mass_concentration_of_elemental_carbon_expressed_as_carbon_in_dry_aerosol_particles_in _air, total_carbon, EUSAAR, EMEP, mass_concentration_of_total_carbon_in_dry_aerosol_particles_in _air, organic_carbon, elemental_carbon, aerosol, mass_concentration_of_organic_carbon_in_dry_aerosol_particles_in _air, ACTRIS, GAW-WDCA, Puy de Dôme, FR0030R" />
  <attribute name="id" value="EXMM-KS4A.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="ACTRIS, EMEP, EUSAAR, GAW-WDCA" />
  <attribute name="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, EUSAAR, GAW-WDCA. For using this data for any kind of publications, you must contact the data originator(s), in terms of acknowledgment" />
  <attribute name="doi" value="https://doi.org/10.48597/EXMM-KS4A" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Sellegri, K., Bouvier, L., 2021, OC/EC at Puy de Dôme, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/EXMM-KS4A" />
  <attribute name="summary" value="OC/EC at Puy de Dôme. These measurements are gathered as a part of the following projects ACTRIS, EMEP, EUSAAR, GAW-WDCA and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: elemental_carbon in aerosol (mass_concentration_of_elemental_carbon_expressed_as_carbon_in_dry_aerosol_particles_in _air), elemental_carbon in aerosol (mass_concentration_of_elemental_carbon_expressed_as_carbon_in_dry_aerosol_particles_in _air), organic_carbon in aerosol (mass_concentration_of_organic_carbon_in_dry_aerosol_particles_in _air), organic_carbon in aerosol (mass_concentration_of_organic_carbon_in_dry_aerosol_particles_in _air), total_carbon in aerosol (mass_concentration_of_total_carbon_in_dry_aerosol_particles_in _air), total_carbon in aerosol (mass_concentration_of_total_carbon_in_dry_aerosol_particles_in _air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="FR04L, CNRS-LaMP, Campus des Cézeaux, 24 avenue des Landais, 63177, Aubière, France" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2021-11-29T00:00:00 UTC" />
  <attribute name="date_metadata_modified" value="2021-11-29T00:00:00 UTC" />
  <attribute name="creator_name" value="Karine Sellegri, Laetitia Bouvier" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="k.sellegri@opgc.fr, " />
  <attribute name="creator_institution" value="&quot;CNRS-LaMP, Campus des Cezea&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="POINT Z (45.772223 2.964886 1465.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="45.772223" />
  <attribute name="geospatial_lat_max" type="double" value="45.772223" />
  <attribute name="geospatial_lon_min" type="double" value="2.964886" />
  <attribute name="geospatial_lon_max" type="double" value="2.964886" />
  <attribute name="geospatial_vertical_min" type="double" value="1465.0" />
  <attribute name="geospatial_vertical_max" type="double" value="1465.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2020-01-14T08:00:00 UTC" />
  <attribute name="time_coverage_end" value="2020-12-24T08:00:00 UTC" />
  <attribute name="time_coverage_duration" value="P0000-11-10T00:00:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-07T00:00:00" />
  <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="Sellegri, K., Bouvier, L., 2021, OC/EC at Puy de Dôme, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/EXMM-KS4A" />
  <attribute name="ebas_set_type_code" value="TI" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="EXMM-KS4A.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/EXMM-KS4A" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/EXMM-KS4A" />
  <attribute name="ebas_file_creation" value="2024-02-13T14:08:59.230049 UTC" />
  <attribute name="ebas_export_state" value="2023-01-05T13:19:41.515450 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="20200114080000" />
  <attribute name="ebas_revision_date" value="20211129000000" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="initial revision, manually inspected" />
  <attribute name="ebas_data_level" value="3a" />
  <attribute name="ebas_period_code" value="11mo" />
  <attribute name="ebas_resolution_code" value="1w" />
  <attribute name="ebas_sample_duration" value="2d" />
  <attribute name="ebas_orig_time_res" value="12h" />
  <attribute name="ebas_station_code" value="FR0030R" />
  <attribute name="ebas_platform_code" value="FR0030S" />
  <attribute name="ebas_station_name" value="Puy de Dôme" />
  <attribute name="ebas_station_gaw_id" value="PUY" />
  <attribute name="ebas_station_gaw_name" value="Puy de Dôme" />
  <attribute name="ebas_station_land_use" value="Forest" />
  <attribute name="ebas_station_setting" value="Mountain" />
  <attribute name="ebas_station_gaw_type" value="G" />
  <attribute name="ebas_station_wmo_region" value="6" />
  <attribute name="ebas_station_latitude" value="45.772223" />
  <attribute name="ebas_station_longitude" value="2.964886" />
  <attribute name="ebas_station_altitude" value="1465.0 m" />
  <attribute name="ebas_measuremenet_latitude" value="45.772223" />
  <attribute name="ebas_measurement_longitude" value="2.964886" />
  <attribute name="ebas_measurement_altitude" value="1465.0 m" />
  <attribute name="ebas_measurement_height" value="4.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_unit" value="ug C/m3" />
  <attribute name="ebas_matrix" value="aerosol" />
  <attribute name="ebas_laboratory_code" value="FR04L" />
  <attribute name="ebas_instrument_type" value="low_vol_sampler" />
  <attribute name="ebas_instrument_name" value="PUY_KNF-IP20-T" />
  <attribute name="ebas_instrument_manufacturer" value="KNF" />
  <attribute name="ebas_instrument_model" value="IP20-T" />
  <attribute name="ebas_instrument_serial_number" value="N/A" />
  <attribute name="ebas_analytical_laboratory_code" value="FR11L" />
  <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
  <attribute name="ebas_analytical_instrument_name" value="SUNSET_French_1" />
  <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
  <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 5" />
  <attribute name="ebas_analytical_instrument_serial_number" value="150A" />
  <attribute name="ebas_method_ref" value="FR04L_Thermo_Optical-Sunset_Lab_ACTRIS" />
  <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
  <attribute name="ebas_inlet_type" value="None--open-face filter" />
  <attribute name="ebas_inlet_description" value="large main flowrate with size cut 30 microns for mean wind velocity 7 ms-1, then sub-sample in inox 50 cm isokitenically, before dispatcher" />
  <attribute name="ebas_flow_rate" value="25.73 l/min" />
  <attribute name="ebas_filter_face_velocity" value="35.0 cm/s" />
  <attribute name="ebas_exposed_filter_area" value="11.95 cm2" />
  <attribute name="ebas_filter_description" value="WhatmanQM-A47mm" />
  <attribute name="ebas_medium" value="Quartz" />
  <attribute name="ebas_filter_prefiring" value="1173.15 K, 4.0 h" />
  <attribute name="ebas_filter_conditioning" value="None" />
  <attribute name="ebas_sample_preparation" value="None" />
  <attribute name="ebas_blank_correction" value="Blank corrected" />
  <attribute name="ebas_artifact_correction" value="None" />
  <attribute name="ebas_charring_correction" value="By laser transmission" />
  <attribute name="ebas_humidity_temperaure_control" value="None" />
  <attribute name="ebas_humidity_temperaure_control_description" value="Filters kept at ambient conditions" />
  <attribute name="ebas_volume_std_temperature" value="ambient" />
  <attribute name="ebas_volume_std_pressure" value="ambient" />
  <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks for TC and OC, limits given by manufacturer for EC" />
  <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty as reported by the Sunset instrument" />
  <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
  <attribute name="ebas_zero_negative_values" value="Zero values may appear if the concentration is under limit of detection" />
  <attribute name="ebas_qa1_measure_id" value="ECAC-OCEC-2017-1" />
  <attribute name="ebas_qa1_date" value="2017-03-01 UTC" />
  <attribute name="ebas_qa1_document_name" value="Results of the inter-laboratory comparison exercise for TC and EC measurements (ref.: OCEC-2017-1)" />
  <attribute name="ebas_qa1_document_url" value="http://www.actris-ecac.eu/files/ECAC-report-OCEC-2017-1.pdf" />
  <attribute name="ebas_qa2_measure_id" value="ECAC-OCEC-2019-1" />
  <attribute name="ebas_qa2_date" value="2019-03-01 UTC" />
  <attribute name="ebas_qa2_document_name" value="Results of the inter-laboratory comparison exercise for TC and EC measurements (ref.: OCEC-2019-1)" />
  <attribute name="ebas_qa2_document_url" value="https://www.actris-ecac.eu/files/OCEC-2019-1-REPORT_final.pdf" />
  <attribute name="ebas_organization" value="FR04L, CNRS-LaMP, , , Campus des Cézeaux, 24 avenue des Landais, 63177, Aubière, France" />
  <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, EUSAAR, GAW-WDCA" />
  <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, European Supersites for Atmospheric Aerosol Research, World Data Centre for Aerosols" />
  <attribute name="ebas_framework_description" value="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., 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., Integration of measurements of atmospheric aerosol properties performed in a distributed network of 20 high quality European ground-based stations in support of policy issues on air quality, long-range transport of pollutants and climate change., 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." />
  <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Ann Mari Fjaeraa, Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, amf@nilu.no, Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="Bouvier, Laetitia, , , , , , , , , " />
  <attribute name="ebas_submitter" value="Pascal, Nicolas, , , , , , , , , " />
  <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, EUSAAR, GAW-WDCA. For using this data for any kind of publications, you must contact the data originator(s), in terms of acknowledgment" />
  <attribute name="ebas_comment" value="After prefiring, sample are packed in aluminum foil and sealed in plastic sheath before analysis. Data converted from double exposure on day/night filters to 48h averages at NILU/EMEP CCC. Average set to missing if day or night sample missing." />
  <attribute name="_NCProperties" value="version=2,netcdf=4.9.0,hdf5=1.12.2" />
  <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="comment" value="{&#xA;    &quot;Data definition&quot;: &quot;EBAS_1.1&quot;,&#xA;    &quot;Data license&quot;: &quot;https://creativecommons.org/licenses/by/4.0/&quot;,&#xA;    &quot;Citation&quot;: &quot;Sellegri, K., Bouvier, L., 2021, OC/EC at Puy de Dôme, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/EXMM-KS4A&quot;,&#xA;    &quot;Set type code&quot;: &quot;TI&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;EXMM-KS4A.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/EXMM-KS4A&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/EXMM-KS4A&quot;,&#xA;    &quot;File creation&quot;: &quot;2024-02-13T14:08:59.230049 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2023-01-05T13:19:41.515450 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20200114080000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20211129000000&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;initial revision, manually inspected&quot;,&#xA;    &quot;Data level&quot;: &quot;3a&quot;,&#xA;    &quot;Period code&quot;: &quot;11mo&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1w&quot;,&#xA;    &quot;Sample duration&quot;: &quot;2d&quot;,&#xA;    &quot;Orig. time res.&quot;: &quot;12h&quot;,&#xA;    &quot;Station code&quot;: &quot;FR0030R&quot;,&#xA;    &quot;Platform code&quot;: &quot;FR0030S&quot;,&#xA;    &quot;Station name&quot;: &quot;Puy de Dôme&quot;,&#xA;    &quot;Station GAW-ID&quot;: &quot;PUY&quot;,&#xA;    &quot;Station GAW-Name&quot;: &quot;Puy de Dôme&quot;,&#xA;    &quot;Station land use&quot;: &quot;Forest&quot;,&#xA;    &quot;Station setting&quot;: &quot;Mountain&quot;,&#xA;    &quot;Station GAW type&quot;: &quot;G&quot;,&#xA;    &quot;Station WMO region&quot;: &quot;6&quot;,&#xA;    &quot;Station latitude&quot;: &quot;45.772223&quot;,&#xA;    &quot;Station longitude&quot;: &quot;2.964886&quot;,&#xA;    &quot;Station altitude&quot;: &quot;1465.0 m&quot;,&#xA;    &quot;Measurement latitude&quot;: &quot;45.772223&quot;,&#xA;    &quot;Measurement longitude&quot;: &quot;2.964886&quot;,&#xA;    &quot;Measurement altitude&quot;: &quot;1465.0 m&quot;,&#xA;    &quot;Measurement height&quot;: &quot;4.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Unit&quot;: &quot;ug C/m3&quot;,&#xA;    &quot;Matrix&quot;: &quot;aerosol&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;FR04L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;low_vol_sampler&quot;,&#xA;    &quot;Instrument name&quot;: &quot;PUY_KNF-IP20-T&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;KNF&quot;,&#xA;    &quot;Instrument model&quot;: &quot;IP20-T&quot;,&#xA;    &quot;Instrument serial number&quot;: &quot;N/A&quot;,&#xA;    &quot;Analytical laboratory code&quot;: &quot;FR11L&quot;,&#xA;    &quot;Analytical measurement technique&quot;: &quot;thermal-optical_analysis&quot;,&#xA;    &quot;Analytical instrument name&quot;: &quot;SUNSET_French_1&quot;,&#xA;    &quot;Analytical instrument manufacturer&quot;: &quot;Sunset Laboratory&quot;,&#xA;    &quot;Analytical instrument model&quot;: &quot;OCEC Lab Instrument Model 5&quot;,&#xA;    &quot;Analytical instrument serial number&quot;: &quot;150A&quot;,&#xA;    &quot;Method ref&quot;: &quot;FR04L_Thermo_Optical-Sunset_Lab_ACTRIS&quot;,&#xA;    &quot;Standard method&quot;: &quot;SOP=EMEP_manual_v2014, TEMP=EUSAAR_2&quot;,&#xA;    &quot;Inlet type&quot;: &quot;None--open-face filter&quot;,&#xA;    &quot;Inlet description&quot;: &quot;large main flowrate with size cut 30 microns for mean wind velocity 7 ms-1, then sub-sample in inox 50 cm isokitenically, before dispatcher&quot;,&#xA;    &quot;Flow rate&quot;: &quot;25.73 l/min&quot;,&#xA;    &quot;Filter face velocity&quot;: &quot;35.0 cm/s&quot;,&#xA;    &quot;Exposed filter area&quot;: &quot;11.95 cm2&quot;,&#xA;    &quot;Filter description&quot;: &quot;WhatmanQM-A47mm&quot;,&#xA;    &quot;Medium&quot;: &quot;Quartz&quot;,&#xA;    &quot;Filter prefiring&quot;: &quot;1173.15 K, 4.0 h&quot;,&#xA;    &quot;Filter conditioning&quot;: &quot;None&quot;,&#xA;    &quot;Sample preparation&quot;: &quot;None&quot;,&#xA;    &quot;Blank correction&quot;: &quot;Blank corrected&quot;,&#xA;    &quot;Artifact correction&quot;: &quot;None&quot;,&#xA;    &quot;Charring correction&quot;: &quot;By laser transmission&quot;,&#xA;    &quot;Humidity/temperature control&quot;: &quot;None&quot;,&#xA;    &quot;Humidity/temperature control description&quot;: &quot;Filters kept at ambient conditions&quot;,&#xA;    &quot;Volume std. temperature&quot;: &quot;ambient&quot;,&#xA;    &quot;Volume std. pressure&quot;: &quot;ambient&quot;,&#xA;    &quot;Detection limit expl.&quot;: &quot;Determined by taking 3 times standard deviation of ensemble of field blanks for TC and OC, limits given by manufacturer for EC&quot;,&#xA;    &quot;Measurement uncertainty expl.&quot;: &quot;Measurement uncertainty as reported by the Sunset instrument&quot;,&#xA;    &quot;Zero/negative values code&quot;: &quot;Zero possible&quot;,&#xA;    &quot;Zero/negative values&quot;: &quot;Zero values may appear if the concentration is under limit of detection&quot;,&#xA;    &quot;QA1 measure ID&quot;: &quot;ECAC-OCEC-2017-1&quot;,&#xA;    &quot;QA1 date&quot;: &quot;2017-03-01 UTC&quot;,&#xA;    &quot;QA1 document name&quot;: &quot;Results of the inter-laboratory comparison exercise for TC and EC measurements (ref.: OCEC-2017-1)&quot;,&#xA;    &quot;QA1 document URL&quot;: &quot;http://www.actris-ecac.eu/files/ECAC-report-OCEC-2017-1.pdf&quot;,&#xA;    &quot;QA2 measure ID&quot;: &quot;ECAC-OCEC-2019-1&quot;,&#xA;    &quot;QA2 date&quot;: &quot;2019-03-01 UTC&quot;,&#xA;    &quot;QA2 document name&quot;: &quot;Results of the inter-laboratory comparison exercise for TC and EC measurements (ref.: OCEC-2019-1)&quot;,&#xA;    &quot;QA2 document URL&quot;: &quot;https://www.actris-ecac.eu/files/OCEC-2019-1-REPORT_final.pdf&quot;,&#xA;    &quot;Organization&quot;: &quot;FR04L, CNRS-LaMP, , , Campus des Cézeaux, 24 avenue des Landais, 63177, Aubière, France&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;ACTRIS, EMEP, EUSAAR, GAW-WDCA&quot;,&#xA;    &quot;Framework name&quot;: &quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, European Supersites for Atmospheric Aerosol Research, World Data Centre for Aerosols&quot;,&#xA;    &quot;Framework description&quot;: &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., 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., Integration of measurements of atmospheric aerosol properties performed in a distributed network of 20 high quality European ground-based stations in support of policy issues on air quality, long-range transport of pollutants and climate change., 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;,&#xA;    &quot;Framework contact name&quot;: &quot;Cathrine Lund Myhre, Kjetil Tørseth, Ann Mari Fjaeraa, Markus Fiebig&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;clm@nilu.no, kt@nilu.no, amf@nilu.no, Markus.Fiebig@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Bouvier, Laetitia, , , , , , , , , &quot;,&#xA;    &quot;Submitter&quot;: &quot;Pascal, Nicolas, , , , , , , , , &quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;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, EUSAAR, GAW-WDCA. For using this data for any kind of publications, you must contact the data originator(s), in terms of acknowledgment&quot;,&#xA;    &quot;Comment&quot;: &quot;After prefiring, sample are packed in aluminum foil and sealed in plastic sheath before analysis. Data converted from double exposure on day/night filters to 48h averages at NILU/EMEP CCC. Average set to missing if day or night sample missing.&quot;&#xA;}" />
  <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="47" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="elemental_carbon_amean_qc_flags" length="3" />
  <dimension name="elemental_carbon_uncertainty_qc_flags" length="3" />
  <dimension name="organic_carbon_amean_qc_flags" length="3" />
  <dimension name="organic_carbon_uncertainty_qc_flags" length="3" />
  <dimension name="Fraction" length="5" />
  <dimension name="organic_carbon_amean_Fraction_qc_flags" length="4" />
  <dimension name="total_carbon_amean_qc_flags" length="3" />
  <dimension name="total_carbon_uncertainty_qc_flags" length="3" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2020-01-15T08:00:00Z" />
    <attribute name="time_coverage_end" value="2020-12-23T08:00:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="644243.0" />
    <attribute name="time_coverage_duration" value="P0Y0M343DT0H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-04-12" />
    <attribute name="nciso_version" value="2.4.7" />
  </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="elemental_carbon_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_elemental_carbon_expressed_as_carbon_in_dry_aerosol_particles_in _air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="elemental_carbon_amean_qc elemental_carbon_amean_ebasmetadata" />
    <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="20211129000000" />
    <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="3a" />
    <attribute name="ebas_sample_duration" value="2d" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="FR0030R" />
    <attribute name="ebas_platform_code" value="FR0030S" />
    <attribute name="ebas_station_name" value="Puy de Dôme" />
    <attribute name="ebas_station_gaw_id" value="PUY" />
    <attribute name="ebas_station_gaw_name" value="Puy de Dôme" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Mountain" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="45.772223" />
    <attribute name="ebas_station_longitude" value="2.964886" />
    <attribute name="ebas_station_altitude" value="1465.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="45.772223" />
    <attribute name="ebas_measurement_longitude" value="2.964886" />
    <attribute name="ebas_measurement_altitude" value="1465.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="elemental_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="FR04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="PUY_KNF-IP20-T" />
    <attribute name="ebas_instrument_manufacturer" value="KNF" />
    <attribute name="ebas_instrument_model" value="IP20-T" />
    <attribute name="ebas_instrument_serial_number" value="N/A" />
    <attribute name="ebas_analytical_laboratory_code" value="FR11L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="SUNSET_French_1" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 5" />
    <attribute name="ebas_analytical_instrument_serial_number" value="150A" />
    <attribute name="ebas_method_ref" value="FR04L_Thermo_Optical-Sunset_Lab_ACTRIS" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="None--open-face filter" />
    <attribute name="ebas_inlet_description" value="large main flowrate with size cut 30 microns for mean wind velocity 7 ms-1, then sub-sample in inox 50 cm isokitenically, before dispatcher" />
    <attribute name="ebas_flow_rate" value="25.73 l/min" />
    <attribute name="ebas_filter_face_velocity" value="35.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.95 cm2" />
    <attribute name="ebas_filter_description" value="WhatmanQM-A47mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="1173.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="None" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Filters kept at ambient conditions" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit" value="0.001 ug C/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks for TC and OC, limits given by manufacturer for EC" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty as reported by the Sunset instrument" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear if the concentration is under limit of detection" />
    <attribute name="ebas_qa1_bias" value="0.0 %" />
    <attribute name="ebas_qa1_variability" value="7.0 %" />
    <attribute name="ebas_organization" value="FR04L, CNRS-LaMP, , , Campus des Cézeaux, 24 avenue des Landais, 63177, Aubière, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, EUSAAR, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, European Supersites for Atmospheric Aerosol Research, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="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., 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., Integration of measurements of atmospheric aerosol properties performed in a distributed network of 20 high quality European ground-based stations in support of policy issues on air quality, long-range transport of pollutants and climate change., 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." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Ann Mari Fjaeraa, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, amf@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Bouvier, Laetitia, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Pascal, Nicolas, , , , , , , , , " />
    <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, EUSAAR, GAW-WDCA. For using this data for any kind of publications, you must contact the data originator(s), in terms of acknowledgment" />
    <attribute name="ebas_comment" value="After prefiring, sample are packed in aluminum foil and sealed in plastic sheath before analysis. Data converted from double exposure on day/night filters to 48h averages at NILU/EMEP CCC. Average set to missing if day or night sample missing." />
  </variable>
  <variable name="elemental_carbon_amean_qc" shape="elemental_carbon_amean_qc_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="elemental_carbon_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="elemental_carbon_uncertainty" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_elemental_carbon_expressed_as_carbon_in_dry_aerosol_particles_in _air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="elemental_carbon_uncertainty_qc elemental_carbon_uncertainty_ebasmetadata" />
    <attribute name="cell_methods" value="time: uncertainty" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20211129000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="uncertainty" />
    <attribute name="ebas_data_level" value="3a" />
    <attribute name="ebas_sample_duration" value="2d" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="FR0030R" />
    <attribute name="ebas_platform_code" value="FR0030S" />
    <attribute name="ebas_station_name" value="Puy de Dôme" />
    <attribute name="ebas_station_gaw_id" value="PUY" />
    <attribute name="ebas_station_gaw_name" value="Puy de Dôme" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Mountain" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="45.772223" />
    <attribute name="ebas_station_longitude" value="2.964886" />
    <attribute name="ebas_station_altitude" value="1465.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="45.772223" />
    <attribute name="ebas_measurement_longitude" value="2.964886" />
    <attribute name="ebas_measurement_altitude" value="1465.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="elemental_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="FR04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="PUY_KNF-IP20-T" />
    <attribute name="ebas_instrument_manufacturer" value="KNF" />
    <attribute name="ebas_instrument_model" value="IP20-T" />
    <attribute name="ebas_instrument_serial_number" value="N/A" />
    <attribute name="ebas_analytical_laboratory_code" value="FR11L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="SUNSET_French_1" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 5" />
    <attribute name="ebas_analytical_instrument_serial_number" value="150A" />
    <attribute name="ebas_method_ref" value="FR04L_Thermo_Optical-Sunset_Lab_ACTRIS" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="None--open-face filter" />
    <attribute name="ebas_inlet_description" value="large main flowrate with size cut 30 microns for mean wind velocity 7 ms-1, then sub-sample in inox 50 cm isokitenically, before dispatcher" />
    <attribute name="ebas_flow_rate" value="25.73 l/min" />
    <attribute name="ebas_filter_face_velocity" value="35.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.95 cm2" />
    <attribute name="ebas_filter_description" value="WhatmanQM-A47mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="1173.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="None" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Filters kept at ambient conditions" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks for TC and OC, limits given by manufacturer for EC" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty as reported by the Sunset instrument" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear if the concentration is under limit of detection" />
    <attribute name="ebas_organization" value="FR04L, CNRS-LaMP, , , Campus des Cézeaux, 24 avenue des Landais, 63177, Aubière, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, EUSAAR, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, European Supersites for Atmospheric Aerosol Research, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="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., 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., Integration of measurements of atmospheric aerosol properties performed in a distributed network of 20 high quality European ground-based stations in support of policy issues on air quality, long-range transport of pollutants and climate change., 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." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Ann Mari Fjaeraa, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, amf@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Bouvier, Laetitia, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Pascal, Nicolas, , , , , , , , , " />
    <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, EUSAAR, GAW-WDCA. For using this data for any kind of publications, you must contact the data originator(s), in terms of acknowledgment" />
    <attribute name="ebas_comment" value="After prefiring, sample are packed in aluminum foil and sealed in plastic sheath before analysis. Data converted from double exposure on day/night filters to 48h averages at NILU/EMEP CCC. Average set to missing if day or night sample missing." />
  </variable>
  <variable name="elemental_carbon_uncertainty_qc" shape="elemental_carbon_uncertainty_qc_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="elemental_carbon_uncertainty_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="organic_carbon_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_carbon_in_dry_aerosol_particles_in _air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="organic_carbon_amean_qc organic_carbon_amean_ebasmetadata" />
    <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="20211129000000" />
    <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="3a" />
    <attribute name="ebas_sample_duration" value="2d" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="FR0030R" />
    <attribute name="ebas_platform_code" value="FR0030S" />
    <attribute name="ebas_station_name" value="Puy de Dôme" />
    <attribute name="ebas_station_gaw_id" value="PUY" />
    <attribute name="ebas_station_gaw_name" value="Puy de Dôme" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Mountain" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="45.772223" />
    <attribute name="ebas_station_longitude" value="2.964886" />
    <attribute name="ebas_station_altitude" value="1465.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="45.772223" />
    <attribute name="ebas_measurement_longitude" value="2.964886" />
    <attribute name="ebas_measurement_altitude" value="1465.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="FR04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="PUY_KNF-IP20-T" />
    <attribute name="ebas_instrument_manufacturer" value="KNF" />
    <attribute name="ebas_instrument_model" value="IP20-T" />
    <attribute name="ebas_instrument_serial_number" value="N/A" />
    <attribute name="ebas_analytical_laboratory_code" value="FR11L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="SUNSET_French_1" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 5" />
    <attribute name="ebas_analytical_instrument_serial_number" value="150A" />
    <attribute name="ebas_method_ref" value="FR04L_Thermo_Optical-Sunset_Lab_ACTRIS" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="None--open-face filter" />
    <attribute name="ebas_inlet_description" value="large main flowrate with size cut 30 microns for mean wind velocity 7 ms-1, then sub-sample in inox 50 cm isokitenically, before dispatcher" />
    <attribute name="ebas_flow_rate" value="25.73 l/min" />
    <attribute name="ebas_filter_face_velocity" value="35.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.95 cm2" />
    <attribute name="ebas_filter_description" value="WhatmanQM-A47mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="1173.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="None" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Filters kept at ambient conditions" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit" value="1.082 ug C/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks for TC and OC, limits given by manufacturer for EC" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty as reported by the Sunset instrument" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear if the concentration is under limit of detection" />
    <attribute name="ebas_qa1_bias" value="0.0 %" />
    <attribute name="ebas_qa1_variability" value="2.0 %" />
    <attribute name="ebas_organization" value="FR04L, CNRS-LaMP, , , Campus des Cézeaux, 24 avenue des Landais, 63177, Aubière, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, EUSAAR, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, European Supersites for Atmospheric Aerosol Research, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="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., 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., Integration of measurements of atmospheric aerosol properties performed in a distributed network of 20 high quality European ground-based stations in support of policy issues on air quality, long-range transport of pollutants and climate change., 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." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Ann Mari Fjaeraa, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, amf@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Bouvier, Laetitia, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Pascal, Nicolas, , , , , , , , , " />
    <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, EUSAAR, GAW-WDCA. For using this data for any kind of publications, you must contact the data originator(s), in terms of acknowledgment" />
    <attribute name="ebas_comment" value="After prefiring, sample are packed in aluminum foil and sealed in plastic sheath before analysis. Data converted from double exposure on day/night filters to 48h averages at NILU/EMEP CCC. Average set to missing if day or night sample missing." />
  </variable>
  <variable name="organic_carbon_amean_qc" shape="organic_carbon_amean_qc_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="organic_carbon_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="organic_carbon_uncertainty" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_carbon_in_dry_aerosol_particles_in _air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="organic_carbon_uncertainty_qc organic_carbon_uncertainty_ebasmetadata" />
    <attribute name="cell_methods" value="time: uncertainty" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20211129000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="uncertainty" />
    <attribute name="ebas_data_level" value="3a" />
    <attribute name="ebas_sample_duration" value="2d" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="FR0030R" />
    <attribute name="ebas_platform_code" value="FR0030S" />
    <attribute name="ebas_station_name" value="Puy de Dôme" />
    <attribute name="ebas_station_gaw_id" value="PUY" />
    <attribute name="ebas_station_gaw_name" value="Puy de Dôme" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Mountain" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="45.772223" />
    <attribute name="ebas_station_longitude" value="2.964886" />
    <attribute name="ebas_station_altitude" value="1465.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="45.772223" />
    <attribute name="ebas_measurement_longitude" value="2.964886" />
    <attribute name="ebas_measurement_altitude" value="1465.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="FR04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="PUY_KNF-IP20-T" />
    <attribute name="ebas_instrument_manufacturer" value="KNF" />
    <attribute name="ebas_instrument_model" value="IP20-T" />
    <attribute name="ebas_instrument_serial_number" value="N/A" />
    <attribute name="ebas_analytical_laboratory_code" value="FR11L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="SUNSET_French_1" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 5" />
    <attribute name="ebas_analytical_instrument_serial_number" value="150A" />
    <attribute name="ebas_method_ref" value="FR04L_Thermo_Optical-Sunset_Lab_ACTRIS" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="None--open-face filter" />
    <attribute name="ebas_inlet_description" value="large main flowrate with size cut 30 microns for mean wind velocity 7 ms-1, then sub-sample in inox 50 cm isokitenically, before dispatcher" />
    <attribute name="ebas_flow_rate" value="25.73 l/min" />
    <attribute name="ebas_filter_face_velocity" value="35.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.95 cm2" />
    <attribute name="ebas_filter_description" value="WhatmanQM-A47mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="1173.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="None" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Filters kept at ambient conditions" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks for TC and OC, limits given by manufacturer for EC" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty as reported by the Sunset instrument" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear if the concentration is under limit of detection" />
    <attribute name="ebas_organization" value="FR04L, CNRS-LaMP, , , Campus des Cézeaux, 24 avenue des Landais, 63177, Aubière, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, EUSAAR, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, European Supersites for Atmospheric Aerosol Research, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="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., 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., Integration of measurements of atmospheric aerosol properties performed in a distributed network of 20 high quality European ground-based stations in support of policy issues on air quality, long-range transport of pollutants and climate change., 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." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Ann Mari Fjaeraa, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, amf@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Bouvier, Laetitia, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Pascal, Nicolas, , , , , , , , , " />
    <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, EUSAAR, GAW-WDCA. For using this data for any kind of publications, you must contact the data originator(s), in terms of acknowledgment" />
    <attribute name="ebas_comment" value="After prefiring, sample are packed in aluminum foil and sealed in plastic sheath before analysis. Data converted from double exposure on day/night filters to 48h averages at NILU/EMEP CCC. Average set to missing if day or night sample missing." />
  </variable>
  <variable name="organic_carbon_uncertainty_qc" shape="organic_carbon_uncertainty_qc_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="organic_carbon_uncertainty_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="organic_carbon_amean_Fraction" shape="Fraction time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_organic_carbon_in_dry_aerosol_particles_in _air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="organic_carbon_amean_Fraction_qc organic_carbon_amean_Fraction_ebasmetadata" />
    <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="20211129000000" />
    <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="3a" />
    <attribute name="ebas_sample_duration" value="2d" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="FR0030R" />
    <attribute name="ebas_platform_code" value="FR0030S" />
    <attribute name="ebas_station_name" value="Puy de Dôme" />
    <attribute name="ebas_station_gaw_id" value="PUY" />
    <attribute name="ebas_station_gaw_name" value="Puy de Dôme" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Mountain" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="45.772223" />
    <attribute name="ebas_station_longitude" value="2.964886" />
    <attribute name="ebas_station_altitude" value="1465.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="45.772223" />
    <attribute name="ebas_measurement_longitude" value="2.964886" />
    <attribute name="ebas_measurement_altitude" value="1465.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="organic_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="FR04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="PUY_KNF-IP20-T" />
    <attribute name="ebas_instrument_manufacturer" value="KNF" />
    <attribute name="ebas_instrument_model" value="IP20-T" />
    <attribute name="ebas_instrument_serial_number" value="N/A" />
    <attribute name="ebas_analytical_laboratory_code" value="FR11L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="SUNSET_French_1" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 5" />
    <attribute name="ebas_analytical_instrument_serial_number" value="150A" />
    <attribute name="ebas_method_ref" value="FR04L_Thermo_Optical-Sunset_Lab_ACTRIS" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="None--open-face filter" />
    <attribute name="ebas_inlet_description" value="large main flowrate with size cut 30 microns for mean wind velocity 7 ms-1, then sub-sample in inox 50 cm isokitenically, before dispatcher" />
    <attribute name="ebas_flow_rate" value="25.73 l/min" />
    <attribute name="ebas_filter_face_velocity" value="35.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.95 cm2" />
    <attribute name="ebas_filter_description" value="WhatmanQM-A47mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="1173.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="None" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Filters kept at ambient conditions" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks for TC and OC, limits given by manufacturer for EC" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty as reported by the Sunset instrument" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear if the concentration is under limit of detection" />
    <attribute name="ebas_organization" value="FR04L, CNRS-LaMP, , , Campus des Cézeaux, 24 avenue des Landais, 63177, Aubière, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, EUSAAR, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, European Supersites for Atmospheric Aerosol Research, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="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., 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., Integration of measurements of atmospheric aerosol properties performed in a distributed network of 20 high quality European ground-based stations in support of policy issues on air quality, long-range transport of pollutants and climate change., 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." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Ann Mari Fjaeraa, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, amf@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Bouvier, Laetitia, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Pascal, Nicolas, , , , , , , , , " />
    <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, EUSAAR, GAW-WDCA. For using this data for any kind of publications, you must contact the data originator(s), in terms of acknowledgment" />
    <attribute name="ebas_comment" value="After prefiring, sample are packed in aluminum foil and sealed in plastic sheath before analysis. Data converted from double exposure on day/night filters to 48h averages at NILU/EMEP CCC. Average set to missing if day or night sample missing." />
  </variable>
  <variable name="organic_carbon_amean_Fraction_qc" shape="Fraction organic_carbon_amean_Fraction_qc_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="organic_carbon_amean_Fraction_ebasmetadata" shape="Fraction metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="total_carbon_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_total_carbon_in_dry_aerosol_particles_in _air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="total_carbon_amean_qc total_carbon_amean_ebasmetadata" />
    <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="20211129000000" />
    <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="3a" />
    <attribute name="ebas_sample_duration" value="2d" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="FR0030R" />
    <attribute name="ebas_platform_code" value="FR0030S" />
    <attribute name="ebas_station_name" value="Puy de Dôme" />
    <attribute name="ebas_station_gaw_id" value="PUY" />
    <attribute name="ebas_station_gaw_name" value="Puy de Dôme" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Mountain" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="45.772223" />
    <attribute name="ebas_station_longitude" value="2.964886" />
    <attribute name="ebas_station_altitude" value="1465.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="45.772223" />
    <attribute name="ebas_measurement_longitude" value="2.964886" />
    <attribute name="ebas_measurement_altitude" value="1465.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="total_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="FR04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="PUY_KNF-IP20-T" />
    <attribute name="ebas_instrument_manufacturer" value="KNF" />
    <attribute name="ebas_instrument_model" value="IP20-T" />
    <attribute name="ebas_instrument_serial_number" value="N/A" />
    <attribute name="ebas_analytical_laboratory_code" value="FR11L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="SUNSET_French_1" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 5" />
    <attribute name="ebas_analytical_instrument_serial_number" value="150A" />
    <attribute name="ebas_method_ref" value="FR04L_Thermo_Optical-Sunset_Lab_ACTRIS" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="None--open-face filter" />
    <attribute name="ebas_inlet_description" value="large main flowrate with size cut 30 microns for mean wind velocity 7 ms-1, then sub-sample in inox 50 cm isokitenically, before dispatcher" />
    <attribute name="ebas_flow_rate" value="25.73 l/min" />
    <attribute name="ebas_filter_face_velocity" value="35.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.95 cm2" />
    <attribute name="ebas_filter_description" value="WhatmanQM-A47mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="1173.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="None" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Filters kept at ambient conditions" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit" value="1.082 ug C/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks for TC and OC, limits given by manufacturer for EC" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty as reported by the Sunset instrument" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear if the concentration is under limit of detection" />
    <attribute name="ebas_qa1_bias" value="0.0 %" />
    <attribute name="ebas_qa1_variability" value="3.0 %" />
    <attribute name="ebas_organization" value="FR04L, CNRS-LaMP, , , Campus des Cézeaux, 24 avenue des Landais, 63177, Aubière, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, EUSAAR, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, European Supersites for Atmospheric Aerosol Research, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="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., 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., Integration of measurements of atmospheric aerosol properties performed in a distributed network of 20 high quality European ground-based stations in support of policy issues on air quality, long-range transport of pollutants and climate change., 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." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Ann Mari Fjaeraa, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, amf@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Bouvier, Laetitia, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Pascal, Nicolas, , , , , , , , , " />
    <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, EUSAAR, GAW-WDCA. For using this data for any kind of publications, you must contact the data originator(s), in terms of acknowledgment" />
    <attribute name="ebas_comment" value="After prefiring, sample are packed in aluminum foil and sealed in plastic sheath before analysis. Data converted from double exposure on day/night filters to 48h averages at NILU/EMEP CCC. Average set to missing if day or night sample missing." />
  </variable>
  <variable name="total_carbon_amean_qc" shape="total_carbon_amean_qc_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="total_carbon_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="total_carbon_uncertainty" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_total_carbon_in_dry_aerosol_particles_in _air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="total_carbon_uncertainty_qc total_carbon_uncertainty_ebasmetadata" />
    <attribute name="cell_methods" value="time: uncertainty" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20211129000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="uncertainty" />
    <attribute name="ebas_data_level" value="3a" />
    <attribute name="ebas_sample_duration" value="2d" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="FR0030R" />
    <attribute name="ebas_platform_code" value="FR0030S" />
    <attribute name="ebas_station_name" value="Puy de Dôme" />
    <attribute name="ebas_station_gaw_id" value="PUY" />
    <attribute name="ebas_station_gaw_name" value="Puy de Dôme" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Mountain" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="45.772223" />
    <attribute name="ebas_station_longitude" value="2.964886" />
    <attribute name="ebas_station_altitude" value="1465.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="45.772223" />
    <attribute name="ebas_measurement_longitude" value="2.964886" />
    <attribute name="ebas_measurement_altitude" value="1465.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="total_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="FR04L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="PUY_KNF-IP20-T" />
    <attribute name="ebas_instrument_manufacturer" value="KNF" />
    <attribute name="ebas_instrument_model" value="IP20-T" />
    <attribute name="ebas_instrument_serial_number" value="N/A" />
    <attribute name="ebas_analytical_laboratory_code" value="FR11L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="SUNSET_French_1" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="OCEC Lab Instrument Model 5" />
    <attribute name="ebas_analytical_instrument_serial_number" value="150A" />
    <attribute name="ebas_method_ref" value="FR04L_Thermo_Optical-Sunset_Lab_ACTRIS" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="None--open-face filter" />
    <attribute name="ebas_inlet_description" value="large main flowrate with size cut 30 microns for mean wind velocity 7 ms-1, then sub-sample in inox 50 cm isokitenically, before dispatcher" />
    <attribute name="ebas_flow_rate" value="25.73 l/min" />
    <attribute name="ebas_filter_face_velocity" value="35.0 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="11.95 cm2" />
    <attribute name="ebas_filter_description" value="WhatmanQM-A47mm" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="1173.15 K, 4.0 h" />
    <attribute name="ebas_filter_conditioning" value="None" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
    <attribute name="ebas_charring_correction" value="By laser transmission" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Filters kept at ambient conditions" />
    <attribute name="ebas_volume_std_temperature" value="ambient" />
    <attribute name="ebas_volume_std_pressure" value="ambient" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks for TC and OC, limits given by manufacturer for EC" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty as reported by the Sunset instrument" />
    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear if the concentration is under limit of detection" />
    <attribute name="ebas_organization" value="FR04L, CNRS-LaMP, , , Campus des Cézeaux, 24 avenue des Landais, 63177, Aubière, France" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, EMEP, EUSAAR, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, European Monitoring and Evaluation Programme, European Supersites for Atmospheric Aerosol Research, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="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., 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., Integration of measurements of atmospheric aerosol properties performed in a distributed network of 20 high quality European ground-based stations in support of policy issues on air quality, long-range transport of pollutants and climate change., 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." />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Kjetil Tørseth, Ann Mari Fjaeraa, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, kt@nilu.no, amf@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Bouvier, Laetitia, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Pascal, Nicolas, , , , , , , , , " />
    <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, EUSAAR, GAW-WDCA. For using this data for any kind of publications, you must contact the data originator(s), in terms of acknowledgment" />
    <attribute name="ebas_comment" value="After prefiring, sample are packed in aluminum foil and sealed in plastic sheath before analysis. Data converted from double exposure on day/night filters to 48h averages at NILU/EMEP CCC. Average set to missing if day or night sample missing." />
  </variable>
  <variable name="total_carbon_uncertainty_qc" shape="total_carbon_uncertainty_qc_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="total_carbon_uncertainty_ebasmetadata" 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 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <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 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="Fraction" shape="Fraction" type="String" />
</netcdf>
