<?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="Ground based in situ observations of low_vol_sampler at Aosta-Saint Christophe (IT0020U)" />
  <attribute name="keywords" value="Aosta-Saint Christophe, total_carbon, mass_concentration_of_elemental_carbon_in_pm2p5_in_air, GAW-WDCA, pm25, organic_carbon, IT0020U, CAMPAIGN, mass_concentration_of_total_carbon_in_pm2p5_in_air, elemental_carbon, mass_concentration_of_organic_carbon_in_pm2p5_in_air, EMEP, COLOSSAL" />
  <attribute name="id" value="7KND-4CCV.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="CAMPAIGN, COLOSSAL, EMEP, GAW-WDCA" />
  <attribute name="acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="doi" value="https://doi.org/10.48597/7KND-4CCV" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Sara Pittavino, Henri Diemoz, elemental_carbon, organic_carbon, total_carbon - low_vol_sampler at Aosta-Saint Christophe, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/7KND-4CCV" />
  <attribute name="summary" value="Ground based in situ observations of low_vol_sampler at Aosta-Saint Christophe (IT0020U). These measurements are gathered as a part of the following projects CAMPAIGN, COLOSSAL, EMEP, GAW-WDCA and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: elemental_carbon in pm25 (mass_concentration_of_elemental_carbon_in_pm2p5_in_air), elemental_carbon in pm25 (mass_concentration_of_elemental_carbon_in_pm2p5_in_air), organic_carbon in pm25 (mass_concentration_of_organic_carbon_in_pm2p5_in_air), organic_carbon in pm25 (mass_concentration_of_organic_carbon_in_pm2p5_in_air), total_carbon in pm25 (mass_concentration_of_total_carbon_in_pm2p5_in_air), total_carbon in pm25 (mass_concentration_of_total_carbon_in_pm2p5_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="IT16L, ARPA Valle d'Aosta, ARPA VDA, Località Grande Charrière, 44, 11020, Saint-christophe AO, Italy" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2018-06-05T00:00:00 UTC" />
  <attribute name="date_metadata_modified" value="2018-06-05T00:00:00 UTC" />
  <attribute name="creator_name" value="Sara Pittavino, Henri Diemoz" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="s.pittavino@arpa.vda.it, h.diemoz@arpa.vda.it" />
  <attribute name="creator_institution" value="&quot;Regional Agency for Environmental Protection of Aosta Valley, COAC Laboratory, ARPA VDA&quot;, &quot;Regional Agency for Environmental Protection of Aosta Valley, Air and Atmosphere Department, ARPA VDA&quot;" />
  <attribute name="contributor_name" value="Sara Pittavino" />
  <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 (45.7422 7.357 560.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="45.7422" />
  <attribute name="geospatial_lat_max" type="double" value="45.7422" />
  <attribute name="geospatial_lon_min" type="double" value="7.357" />
  <attribute name="geospatial_lon_max" type="double" value="7.357" />
  <attribute name="geospatial_vertical_min" type="double" value="560.0" />
  <attribute name="geospatial_vertical_max" type="double" value="560.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2018-01-20T12:05:59 UTC" />
  <attribute name="time_coverage_end" value="2018-03-26T12:03:00 UTC" />
  <attribute name="time_coverage_duration" value="P0000-02-05T23:57:00.100000" />
  <attribute name="time_coverage_resolution" value="P0000-00-00T12:00:00" />
  <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="Sara Pittavino, Henri Diemoz, elemental_carbon, organic_carbon, total_carbon - low_vol_sampler at Aosta-Saint Christophe, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/7KND-4CCV" />
  <attribute name="ebas_set_type_code" value="TI" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="7KND-4CCV.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/7KND-4CCV" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/7KND-4CCV" />
  <attribute name="ebas_file_creation" value="2023-12-12T05:27:59.583922 UTC" />
  <attribute name="ebas_export_state" value="2021-05-20T19:42:55.620000 UTC" />
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  <attribute name="ebas_startdate" value="20180120120559" />
  <attribute name="ebas_revision_date" value="20180605000000" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="initial revision, manually inspected" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="9w" />
  <attribute name="ebas_resolution_code" value="12h" />
  <attribute name="ebas_sample_duration" value="12h" />
  <attribute name="ebas_orig_time_res" value="12h" />
  <attribute name="ebas_station_code" value="IT0020U" />
  <attribute name="ebas_platform_code" value="IT0020S" />
  <attribute name="ebas_station_name" value="Aosta-Saint Christophe" />
  <attribute name="ebas_station_land_use" value="Commercial" />
  <attribute name="ebas_station_setting" value="Suburban" />
  <attribute name="ebas_station_latitude" value="45.7422" />
  <attribute name="ebas_station_longitude" value="7.357" />
  <attribute name="ebas_station_altitude" value="560.0 m" />
  <attribute name="ebas_measuremenet_latitude" value="45.7422" />
  <attribute name="ebas_measurement_longitude" value="7.357" />
  <attribute name="ebas_measurement_altitude" value="560.0 m" />
  <attribute name="ebas_measurement_height" value="10.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_unit" value="ug C/m3" />
  <attribute name="ebas_matrix" value="pm25" />
  <attribute name="ebas_laboratory_code" value="IT16L" />
  <attribute name="ebas_instrument_type" value="low_vol_sampler" />
  <attribute name="ebas_instrument_name" value="TCR1" />
  <attribute name="ebas_instrument_manufacturer" value="TCR Tecora" />
  <attribute name="ebas_instrument_model" value="Skypost" />
  <attribute name="ebas_instrument_serial_number" value="950556" />
  <attribute name="ebas_analytical_laboratory_code" value="IT16L" />
  <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
  <attribute name="ebas_analytical_instrument_name" value="COAC005_Sunset" />
  <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
  <attribute name="ebas_analytical_instrument_model" value="Carbon Aerosol Analyzer" />
  <attribute name="ebas_analytical_instrument_serial_number" value="308-105" />
  <attribute name="ebas_method_ref" value="IT16L_COAC005_Sunset" />
  <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
  <attribute name="ebas_inlet_type" value="Impactor--direct" />
  <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
  <attribute name="ebas_flow_rate" value="38.0 l/min" />
  <attribute name="ebas_filter_face_velocity" value="50.44 cm/s" />
  <attribute name="ebas_exposed_filter_area" value="12.56 cm2" />
  <attribute name="ebas_filter_description" value="Millipore AQF_A04700 Lot_R7HA46123" />
  <attribute name="ebas_medium" value="Quartz" />
  <attribute name="ebas_filter_prefiring" value="873.0 K, 1.0 h" />
  <attribute name="ebas_sample_preparation" value="None" />
  <attribute name="ebas_blank_correction" value="Not 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="filter kept at ambient conditions together with sampling head" />
  <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
  <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty includes quantifiable uncertainty" />
  <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
  <attribute name="ebas_zero_negative_values" value="All data are valid" />
  <attribute name="ebas_organization" value="IT16L, ARPA Valle d'Aosta, ARPA VDA, , &quot;Località Grande Charrière, 44&quot;, , 11020, Saint-christophe AO, Italy" />
  <attribute name="ebas_framework_acronym" value="CAMPAIGN, COLOSSAL, EMEP, GAW-WDCA" />
  <attribute name="ebas_framework_name" value=", Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL, European Monitoring and Evaluation Programme, World Data Centre for Aerosols" />
  <attribute name="ebas_framework_description" value=", Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for 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="Wenche Aas, Wenche Aas, Kjetil Tørseth, Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="waa@nilu.no, waa@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="Diemoz, Henri, h.diemoz@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, Air and Atmosphere Department, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
  <attribute name="ebas_submitter" value="Pittavino, Sara, s.pittavino@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, COAC Laboratory, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
  <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  <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;Sara Pittavino, Henri Diemoz, elemental_carbon, organic_carbon, total_carbon - low_vol_sampler at Aosta-Saint Christophe, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/7KND-4CCV&quot;,&#xA;    &quot;Set type code&quot;: &quot;TI&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;7KND-4CCV.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/7KND-4CCV&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/7KND-4CCV&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-12-12T05:27:59.583922 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2021-05-20T19:42:55.620000 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20180120120559&quot;,&#xA;    &quot;Revision date&quot;: &quot;20180605000000&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;2&quot;,&#xA;    &quot;Period code&quot;: &quot;9w&quot;,&#xA;    &quot;Resolution code&quot;: &quot;12h&quot;,&#xA;    &quot;Sample duration&quot;: &quot;12h&quot;,&#xA;    &quot;Orig. time res.&quot;: &quot;12h&quot;,&#xA;    &quot;Station code&quot;: &quot;IT0020U&quot;,&#xA;    &quot;Platform code&quot;: &quot;IT0020S&quot;,&#xA;    &quot;Station name&quot;: &quot;Aosta-Saint Christophe&quot;,&#xA;    &quot;Station land use&quot;: &quot;Commercial&quot;,&#xA;    &quot;Station setting&quot;: &quot;Suburban&quot;,&#xA;    &quot;Station latitude&quot;: &quot;45.7422&quot;,&#xA;    &quot;Station longitude&quot;: &quot;7.357&quot;,&#xA;    &quot;Station altitude&quot;: &quot;560.0 m&quot;,&#xA;    &quot;Measurement latitude&quot;: &quot;45.7422&quot;,&#xA;    &quot;Measurement longitude&quot;: &quot;7.357&quot;,&#xA;    &quot;Measurement altitude&quot;: &quot;560.0 m&quot;,&#xA;    &quot;Measurement height&quot;: &quot;10.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Unit&quot;: &quot;ug C/m3&quot;,&#xA;    &quot;Matrix&quot;: &quot;pm25&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;IT16L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;low_vol_sampler&quot;,&#xA;    &quot;Instrument name&quot;: &quot;TCR1&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;TCR Tecora&quot;,&#xA;    &quot;Instrument model&quot;: &quot;Skypost&quot;,&#xA;    &quot;Instrument serial number&quot;: &quot;950556&quot;,&#xA;    &quot;Analytical laboratory code&quot;: &quot;IT16L&quot;,&#xA;    &quot;Analytical measurement technique&quot;: &quot;thermal-optical_analysis&quot;,&#xA;    &quot;Analytical instrument name&quot;: &quot;COAC005_Sunset&quot;,&#xA;    &quot;Analytical instrument manufacturer&quot;: &quot;Sunset Laboratory&quot;,&#xA;    &quot;Analytical instrument model&quot;: &quot;Carbon Aerosol Analyzer&quot;,&#xA;    &quot;Analytical instrument serial number&quot;: &quot;308-105&quot;,&#xA;    &quot;Method ref&quot;: &quot;IT16L_COAC005_Sunset&quot;,&#xA;    &quot;Standard method&quot;: &quot;SOP=EMEP_manual_v2014, TEMP=EUSAAR_2&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Impactor--direct&quot;,&#xA;    &quot;Inlet description&quot;: &quot;Upward facing with rain shield&quot;,&#xA;    &quot;Flow rate&quot;: &quot;38.0 l/min&quot;,&#xA;    &quot;Filter face velocity&quot;: &quot;50.44 cm/s&quot;,&#xA;    &quot;Exposed filter area&quot;: &quot;12.56 cm2&quot;,&#xA;    &quot;Filter description&quot;: &quot;Millipore AQF_A04700 Lot_R7HA46123&quot;,&#xA;    &quot;Medium&quot;: &quot;Quartz&quot;,&#xA;    &quot;Filter prefiring&quot;: &quot;873.0 K, 1.0 h&quot;,&#xA;    &quot;Sample preparation&quot;: &quot;None&quot;,&#xA;    &quot;Blank correction&quot;: &quot;Not 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;filter kept at ambient conditions together with sampling head&quot;,&#xA;    &quot;Detection limit expl.&quot;: &quot;Determined by taking 3 times standard deviation of ensemble of field blanks&quot;,&#xA;    &quot;Measurement uncertainty expl.&quot;: &quot;Measurement uncertainty includes quantifiable uncertainty&quot;,&#xA;    &quot;Zero/negative values code&quot;: &quot;Zero/negative possible&quot;,&#xA;    &quot;Zero/negative values&quot;: &quot;All data are valid&quot;,&#xA;    &quot;Organization&quot;: &quot;IT16L, ARPA Valle d'Aosta, ARPA VDA, , \&quot;Località Grande Charrière, 44\&quot;, , 11020, Saint-christophe AO, Italy&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;CAMPAIGN, COLOSSAL, EMEP, GAW-WDCA&quot;,&#xA;    &quot;Framework name&quot;: &quot;, Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL, European Monitoring and Evaluation Programme, World Data Centre for Aerosols&quot;,&#xA;    &quot;Framework description&quot;: &quot;, Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for 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;Wenche Aas, Wenche Aas, Kjetil Tørseth, Markus Fiebig&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;waa@nilu.no, waa@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Diemoz, Henri, h.diemoz@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, Air and Atmosphere Department, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy&quot;,&#xA;    &quot;Submitter&quot;: &quot;Pittavino, Sara, s.pittavino@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, COAC Laboratory, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy&quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;Request acknowledgement details from data originator&quot;&#xA;}" />
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  <attribute name="history" value="None" />
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  <attribute name="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="time" length="36" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="elemental_carbon_amean_qc_flags" length="1" />
  <dimension name="elemental_carbon_uncertainty_qc_flags" length="1" />
  <dimension name="organic_carbon_amean_qc_flags" length="1" />
  <dimension name="organic_carbon_uncertainty_qc_flags" length="1" />
  <dimension name="Fraction" length="5" />
  <dimension name="organic_carbon_amean_Fraction_qc_flags" length="1" />
  <dimension name="total_carbon_amean_qc_flags" length="1" />
  <dimension name="total_carbon_uncertainty_qc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2018-01-20T18:06:29Z" />
    <attribute name="time_coverage_end" value="2018-03-26T06:02:29Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="159216.0" />
    <attribute name="time_coverage_duration" value="P0Y0M64DT11H56M0.000S" />
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  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-05-18" />
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    <attribute name="long_name" value="time bounds for measurement" />
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    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_elemental_carbon_in_pm2p5_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="20180605000000" />
    <attribute name="ebas_version" value="1" />
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    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12h" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="IT0020U" />
    <attribute name="ebas_platform_code" value="IT0020S" />
    <attribute name="ebas_station_name" value="Aosta-Saint Christophe" />
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    <attribute name="ebas_station_setting" value="Suburban" />
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    <attribute name="ebas_station_longitude" value="7.357" />
    <attribute name="ebas_station_altitude" value="560.0 m" />
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    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="IT16L" />
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    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
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    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="38.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="50.44 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="12.56 cm2" />
    <attribute name="ebas_filter_description" value="Millipore AQF_A04700 Lot_R7HA46123" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="873.0 K, 1.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Not 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="filter kept at ambient conditions together with sampling head" />
    <attribute name="ebas_detection_limit" value="0.2 ug C/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty includes quantifiable uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="All data are valid" />
    <attribute name="ebas_organization" value="IT16L, ARPA Valle d'Aosta, ARPA VDA, , &quot;Località Grande Charrière, 44&quot;, , 11020, Saint-christophe AO, Italy" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, COLOSSAL, EMEP, GAW-WDCA" />
    <attribute name="ebas_framework_name" value=", Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL, European Monitoring and Evaluation Programme, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value=", Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for 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="Wenche Aas, Wenche Aas, Kjetil Tørseth, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, waa@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Diemoz, Henri, h.diemoz@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, Air and Atmosphere Department, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_submitter" value="Pittavino, Sara, s.pittavino@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, COAC Laboratory, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </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_in_pm2p5_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="20180605000000" />
    <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="2" />
    <attribute name="ebas_sample_duration" value="12h" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="IT0020U" />
    <attribute name="ebas_platform_code" value="IT0020S" />
    <attribute name="ebas_station_name" value="Aosta-Saint Christophe" />
    <attribute name="ebas_station_land_use" value="Commercial" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_latitude" value="45.7422" />
    <attribute name="ebas_station_longitude" value="7.357" />
    <attribute name="ebas_station_altitude" value="560.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="45.7422" />
    <attribute name="ebas_measurement_longitude" value="7.357" />
    <attribute name="ebas_measurement_altitude" value="560.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 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="pm25" />
    <attribute name="ebas_laboratory_code" value="IT16L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="TCR1" />
    <attribute name="ebas_instrument_manufacturer" value="TCR Tecora" />
    <attribute name="ebas_instrument_model" value="Skypost" />
    <attribute name="ebas_instrument_serial_number" value="950556" />
    <attribute name="ebas_analytical_laboratory_code" value="IT16L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="COAC005_Sunset" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="Carbon Aerosol Analyzer" />
    <attribute name="ebas_analytical_instrument_serial_number" value="308-105" />
    <attribute name="ebas_method_ref" value="IT16L_COAC005_Sunset" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="38.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="50.44 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="12.56 cm2" />
    <attribute name="ebas_filter_description" value="Millipore AQF_A04700 Lot_R7HA46123" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="873.0 K, 1.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Not 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="filter kept at ambient conditions together with sampling head" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty includes quantifiable uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="All data are valid" />
    <attribute name="ebas_organization" value="IT16L, ARPA Valle d'Aosta, ARPA VDA, , &quot;Località Grande Charrière, 44&quot;, , 11020, Saint-christophe AO, Italy" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, COLOSSAL, EMEP, GAW-WDCA" />
    <attribute name="ebas_framework_name" value=", Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL, European Monitoring and Evaluation Programme, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value=", Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for 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="Wenche Aas, Wenche Aas, Kjetil Tørseth, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, waa@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Diemoz, Henri, h.diemoz@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, Air and Atmosphere Department, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_submitter" value="Pittavino, Sara, s.pittavino@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, COAC Laboratory, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </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_pm2p5_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="20180605000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12h" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="IT0020U" />
    <attribute name="ebas_platform_code" value="IT0020S" />
    <attribute name="ebas_station_name" value="Aosta-Saint Christophe" />
    <attribute name="ebas_station_land_use" value="Commercial" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_latitude" value="45.7422" />
    <attribute name="ebas_station_longitude" value="7.357" />
    <attribute name="ebas_station_altitude" value="560.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="45.7422" />
    <attribute name="ebas_measurement_longitude" value="7.357" />
    <attribute name="ebas_measurement_altitude" value="560.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 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="pm25" />
    <attribute name="ebas_laboratory_code" value="IT16L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="TCR1" />
    <attribute name="ebas_instrument_manufacturer" value="TCR Tecora" />
    <attribute name="ebas_instrument_model" value="Skypost" />
    <attribute name="ebas_instrument_serial_number" value="950556" />
    <attribute name="ebas_analytical_laboratory_code" value="IT16L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="COAC005_Sunset" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="Carbon Aerosol Analyzer" />
    <attribute name="ebas_analytical_instrument_serial_number" value="308-105" />
    <attribute name="ebas_method_ref" value="IT16L_COAC005_Sunset" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="38.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="50.44 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="12.56 cm2" />
    <attribute name="ebas_filter_description" value="Millipore AQF_A04700 Lot_R7HA46123" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="873.0 K, 1.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Not 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="filter kept at ambient conditions together with sampling head" />
    <attribute name="ebas_detection_limit" value="0.2 ug C/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty includes quantifiable uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="All data are valid" />
    <attribute name="ebas_organization" value="IT16L, ARPA Valle d'Aosta, ARPA VDA, , &quot;Località Grande Charrière, 44&quot;, , 11020, Saint-christophe AO, Italy" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, COLOSSAL, EMEP, GAW-WDCA" />
    <attribute name="ebas_framework_name" value=", Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL, European Monitoring and Evaluation Programme, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value=", Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for 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="Wenche Aas, Wenche Aas, Kjetil Tørseth, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, waa@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Diemoz, Henri, h.diemoz@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, Air and Atmosphere Department, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_submitter" value="Pittavino, Sara, s.pittavino@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, COAC Laboratory, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </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_pm2p5_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="20180605000000" />
    <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="2" />
    <attribute name="ebas_sample_duration" value="12h" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="IT0020U" />
    <attribute name="ebas_platform_code" value="IT0020S" />
    <attribute name="ebas_station_name" value="Aosta-Saint Christophe" />
    <attribute name="ebas_station_land_use" value="Commercial" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_latitude" value="45.7422" />
    <attribute name="ebas_station_longitude" value="7.357" />
    <attribute name="ebas_station_altitude" value="560.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="45.7422" />
    <attribute name="ebas_measurement_longitude" value="7.357" />
    <attribute name="ebas_measurement_altitude" value="560.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 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="pm25" />
    <attribute name="ebas_laboratory_code" value="IT16L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="TCR1" />
    <attribute name="ebas_instrument_manufacturer" value="TCR Tecora" />
    <attribute name="ebas_instrument_model" value="Skypost" />
    <attribute name="ebas_instrument_serial_number" value="950556" />
    <attribute name="ebas_analytical_laboratory_code" value="IT16L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="COAC005_Sunset" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="Carbon Aerosol Analyzer" />
    <attribute name="ebas_analytical_instrument_serial_number" value="308-105" />
    <attribute name="ebas_method_ref" value="IT16L_COAC005_Sunset" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="38.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="50.44 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="12.56 cm2" />
    <attribute name="ebas_filter_description" value="Millipore AQF_A04700 Lot_R7HA46123" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="873.0 K, 1.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Not 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="filter kept at ambient conditions together with sampling head" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty includes quantifiable uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="All data are valid" />
    <attribute name="ebas_organization" value="IT16L, ARPA Valle d'Aosta, ARPA VDA, , &quot;Località Grande Charrière, 44&quot;, , 11020, Saint-christophe AO, Italy" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, COLOSSAL, EMEP, GAW-WDCA" />
    <attribute name="ebas_framework_name" value=", Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL, European Monitoring and Evaluation Programme, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value=", Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for 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="Wenche Aas, Wenche Aas, Kjetil Tørseth, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, waa@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Diemoz, Henri, h.diemoz@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, Air and Atmosphere Department, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_submitter" value="Pittavino, Sara, s.pittavino@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, COAC Laboratory, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </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_pm2p5_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="20180605000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12h" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="IT0020U" />
    <attribute name="ebas_platform_code" value="IT0020S" />
    <attribute name="ebas_station_name" value="Aosta-Saint Christophe" />
    <attribute name="ebas_station_land_use" value="Commercial" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_latitude" value="45.7422" />
    <attribute name="ebas_station_longitude" value="7.357" />
    <attribute name="ebas_station_altitude" value="560.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="45.7422" />
    <attribute name="ebas_measurement_longitude" value="7.357" />
    <attribute name="ebas_measurement_altitude" value="560.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 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="pm25" />
    <attribute name="ebas_laboratory_code" value="IT16L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="TCR1" />
    <attribute name="ebas_instrument_manufacturer" value="TCR Tecora" />
    <attribute name="ebas_instrument_model" value="Skypost" />
    <attribute name="ebas_instrument_serial_number" value="950556" />
    <attribute name="ebas_analytical_laboratory_code" value="IT16L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="COAC005_Sunset" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="Carbon Aerosol Analyzer" />
    <attribute name="ebas_analytical_instrument_serial_number" value="308-105" />
    <attribute name="ebas_method_ref" value="IT16L_COAC005_Sunset" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="38.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="50.44 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="12.56 cm2" />
    <attribute name="ebas_filter_description" value="Millipore AQF_A04700 Lot_R7HA46123" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="873.0 K, 1.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Not 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="filter kept at ambient conditions together with sampling head" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty includes quantifiable uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="All data are valid" />
    <attribute name="ebas_organization" value="IT16L, ARPA Valle d'Aosta, ARPA VDA, , &quot;Località Grande Charrière, 44&quot;, , 11020, Saint-christophe AO, Italy" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, COLOSSAL, EMEP, GAW-WDCA" />
    <attribute name="ebas_framework_name" value=", Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL, European Monitoring and Evaluation Programme, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value=", Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for 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="Wenche Aas, Wenche Aas, Kjetil Tørseth, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, waa@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Diemoz, Henri, h.diemoz@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, Air and Atmosphere Department, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_submitter" value="Pittavino, Sara, s.pittavino@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, COAC Laboratory, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </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_pm2p5_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="20180605000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="12h" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="IT0020U" />
    <attribute name="ebas_platform_code" value="IT0020S" />
    <attribute name="ebas_station_name" value="Aosta-Saint Christophe" />
    <attribute name="ebas_station_land_use" value="Commercial" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_latitude" value="45.7422" />
    <attribute name="ebas_station_longitude" value="7.357" />
    <attribute name="ebas_station_altitude" value="560.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="45.7422" />
    <attribute name="ebas_measurement_longitude" value="7.357" />
    <attribute name="ebas_measurement_altitude" value="560.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 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="pm25" />
    <attribute name="ebas_laboratory_code" value="IT16L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="TCR1" />
    <attribute name="ebas_instrument_manufacturer" value="TCR Tecora" />
    <attribute name="ebas_instrument_model" value="Skypost" />
    <attribute name="ebas_instrument_serial_number" value="950556" />
    <attribute name="ebas_analytical_laboratory_code" value="IT16L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="COAC005_Sunset" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="Carbon Aerosol Analyzer" />
    <attribute name="ebas_analytical_instrument_serial_number" value="308-105" />
    <attribute name="ebas_method_ref" value="IT16L_COAC005_Sunset" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="38.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="50.44 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="12.56 cm2" />
    <attribute name="ebas_filter_description" value="Millipore AQF_A04700 Lot_R7HA46123" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="873.0 K, 1.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Not 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="filter kept at ambient conditions together with sampling head" />
    <attribute name="ebas_detection_limit" value="0.2 ug C/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty includes quantifiable uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="All data are valid" />
    <attribute name="ebas_organization" value="IT16L, ARPA Valle d'Aosta, ARPA VDA, , &quot;Località Grande Charrière, 44&quot;, , 11020, Saint-christophe AO, Italy" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, COLOSSAL, EMEP, GAW-WDCA" />
    <attribute name="ebas_framework_name" value=", Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL, European Monitoring and Evaluation Programme, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value=", Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for 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="Wenche Aas, Wenche Aas, Kjetil Tørseth, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, waa@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Diemoz, Henri, h.diemoz@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, Air and Atmosphere Department, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_submitter" value="Pittavino, Sara, s.pittavino@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, COAC Laboratory, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </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_pm2p5_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="20180605000000" />
    <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="2" />
    <attribute name="ebas_sample_duration" value="12h" />
    <attribute name="ebas_orig_time_res" value="12h" />
    <attribute name="ebas_station_code" value="IT0020U" />
    <attribute name="ebas_platform_code" value="IT0020S" />
    <attribute name="ebas_station_name" value="Aosta-Saint Christophe" />
    <attribute name="ebas_station_land_use" value="Commercial" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_latitude" value="45.7422" />
    <attribute name="ebas_station_longitude" value="7.357" />
    <attribute name="ebas_station_altitude" value="560.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="45.7422" />
    <attribute name="ebas_measurement_longitude" value="7.357" />
    <attribute name="ebas_measurement_altitude" value="560.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 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="pm25" />
    <attribute name="ebas_laboratory_code" value="IT16L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="TCR1" />
    <attribute name="ebas_instrument_manufacturer" value="TCR Tecora" />
    <attribute name="ebas_instrument_model" value="Skypost" />
    <attribute name="ebas_instrument_serial_number" value="950556" />
    <attribute name="ebas_analytical_laboratory_code" value="IT16L" />
    <attribute name="ebas_analytical_measurement_technique" value="thermal-optical_analysis" />
    <attribute name="ebas_analytical_instrument_name" value="COAC005_Sunset" />
    <attribute name="ebas_analytical_instrument_manufacturer" value="Sunset Laboratory" />
    <attribute name="ebas_analytical_instrument_model" value="Carbon Aerosol Analyzer" />
    <attribute name="ebas_analytical_instrument_serial_number" value="308-105" />
    <attribute name="ebas_method_ref" value="IT16L_COAC005_Sunset" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v2014, TEMP=EUSAAR_2" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Upward facing with rain shield" />
    <attribute name="ebas_flow_rate" value="38.0 l/min" />
    <attribute name="ebas_filter_face_velocity" value="50.44 cm/s" />
    <attribute name="ebas_exposed_filter_area" value="12.56 cm2" />
    <attribute name="ebas_filter_description" value="Millipore AQF_A04700 Lot_R7HA46123" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_filter_prefiring" value="873.0 K, 1.0 h" />
    <attribute name="ebas_sample_preparation" value="None" />
    <attribute name="ebas_blank_correction" value="Not 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="filter kept at ambient conditions together with sampling head" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Measurement uncertainty includes quantifiable uncertainty" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="All data are valid" />
    <attribute name="ebas_organization" value="IT16L, ARPA Valle d'Aosta, ARPA VDA, , &quot;Località Grande Charrière, 44&quot;, , 11020, Saint-christophe AO, Italy" />
    <attribute name="ebas_framework_acronym" value="CAMPAIGN, COLOSSAL, EMEP, GAW-WDCA" />
    <attribute name="ebas_framework_name" value=", Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL, European Monitoring and Evaluation Programme, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value=", Assessment of fine atmospheric aerosols (PM2.5), ther spatial variability (across Europe), their temporal variability (1h or better), the seasonality, the phenomenology (chemical composition) and the sources., The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., The World Data Centre for 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="Wenche Aas, Wenche Aas, Kjetil Tørseth, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="waa@nilu.no, waa@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Diemoz, Henri, h.diemoz@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, Air and Atmosphere Department, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_submitter" value="Pittavino, Sara, s.pittavino@arpa.vda.it, Regional Agency for Environmental Protection of Aosta Valley, ARPA VDA, COAC Laboratory, Loc. Grande Charrière 44, , 11020, Saint-Christophe, Italy" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </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>
