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  <attribute name="title" value="OC/EC at IUMA" />
  <attribute name="summary" value="OC/EC at IUMA. These measurements are gathered as a part of the following projects CAMPAIGN, COLOSSAL and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['elemental_carbon in pm10 (mass_concentration_of_elemental_carbon_in_pm10_in_air)', 'organic_carbon in pm10 (mass_concentration_of_organic_carbon_in_pm10_in_air)', 'total_carbon in pm10 (mass_concentration_of_total_carbon_in_pm10_in_air)']" />
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  <attribute name="id" value="JT9Q-B4QA.nc" />
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  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/JT9Q-B4QA" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Piñeiro-Iglesias, M., Lopez-Mahia, P., Muniategui-Lorenzo, S., CAMPAIGN, COLOSSAL, 2018, OC/EC at IUMA, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/JT9Q-B4QA" />
  <attribute name="source" value="surface observation" />
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  <attribute name="date_created" value="2021-04-19T15:04:02.080000Z" />
  <attribute name="date_metadata_modified" value="2018-06-08T06:45:00Z" />
  <attribute name="creator_name" value="Maria Piñeiro-Iglesias, Purificación Lopez-Mahia, Soledad Muniategui-Lorenzo" />
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  <attribute name="contributor_name" value="Maria Piñeiro-Iglesias, María Fernández-Amado" />
  <attribute name="contributor_role" value="data submitter, 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" />
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  <attribute name="geospatial_bounds" value="MULTIPOINT Z ((-8.35 43.34 45), (-8.352 43.336 45))" />
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  <attribute name="time_coverage_end" value="2018-02-27T00:00:00Z" />
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  <attribute name="timezone" value="UTC" />
  <attribute name="ebas_data_definition" value="EBAS_1.1" />
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  <attribute name="ebas_file_creation" value="2026-05-20T06:21:17.861763Z" />
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  <attribute name="ebas_startdate" value="2017-12-01T00:00:00.000000Z" />
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  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="3mo" />
  <attribute name="ebas_resolution_code" value="3d" />
  <attribute name="ebas_sample_duration" value="1d" />
  <attribute name="ebas_orig_time_res" value="1d" />
  <attribute name="ebas_station_code" value="ES0024U" />
  <attribute name="ebas_platform_code" value="ES0024S" />
  <attribute name="ebas_station_name" value="IUMA" />
  <attribute name="ebas_station_land_use" value="Residential" />
  <attribute name="ebas_station_setting" value="Suburban" />
  <attribute name="ebas_station_latitude" type="double" value="43.336" />
  <attribute name="ebas_station_longitude" type="double" value="-8.352" />
  <attribute name="ebas_measurement_latitude" type="double" value="43.34" />
  <attribute name="ebas_measurement_longitude" type="double" value="-8.35" />
  <attribute name="ebas_measurement_altitude" value="45.0 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="pm10" />
  <attribute name="ebas_laboratory_code" value="ES10L" />
  <attribute name="ebas_instrument_type" value="high_vol_sampler" />
  <attribute name="ebas_instrument_name" value="Digitel_hvs_914" />
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  <attribute name="ebas_instrument_model" value="DHA-80" />
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  <attribute name="ebas_flow_rate" value="500.0 l/min" />
  <attribute name="ebas_filter_face_velocity" value="54.1 cm/s" />
  <attribute name="ebas_exposed_filter_area" value="153.94 cm2" />
  <attribute name="ebas_filter_description" value="Micro-Quartz Fibre Disc 150 mm Munktell/Ahlstrom" />
  <attribute name="ebas_medium" value="Quartz" />
  <attribute name="ebas_filter_prefiring" value="Not prefired" />
  <attribute name="ebas_filter_conditioning" value="293.15 K, 50.0 %RH, 48.0 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_zero_negative_values_code" value="Zero/negative possible" />
  <attribute name="ebas_qa1_measure_id" value="ECAC-OCEC-2018-1" />
  <attribute name="ebas_qa1_date" value="2018-03-31T00:00:00Z" />
  <attribute name="ebas_qa1_document_name" value="Results of the inter-laboratory comparison exercise for TC and EC measurements (ref.: OCEC-2018-1)" />
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  <attribute name="ebas_organization" value="ES10L, Instituto Universitario de Medio Ambiente, IUMA, , Universidade da Coruña, &quot;Pazo de Lóngora. C/Casares Quiroga, 29&quot;, 15179, &quot;Oleiros, A Coruña&quot;, Spain" />
  <attribute name="ebas_framework_acronym" value="CAMPAIGN, COLOSSAL" />
  <attribute name="ebas_framework_name" value=", Chemical On-Line cOmpoSition and Source Apportionment of fine aerosoL" />
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  <attribute name="ebas_framework_contact_name" value="Wenche Aas, Wenche Aas" />
  <attribute name="ebas_framework_contact_email" value="waa@nilu.no, waa@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Piñeiro-Iglesias, Maria, mariap@udc.es, IUMA, UDC, , C/ Casares Quiroga 29, , 15179, Oleiros-A Coruña, Spain&quot;, &quot;Lopez-Mahia, Purificación, purmahia@udc.es, IUMA, UDC, , C/ Casares Quiroga 29, , 15179, Oleiros-A Coruña, Spain&quot;, &quot;Muniategui-Lorenzo, Soledad, smuniat@udc.es, IUMA, UDC, , C/ Casares Quiroga 29, , 15179, Oleiros-A Coruña, Spain&quot;" />
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  <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: CAMPAIGN, COLOSSAL. Request acknowledgement details from data originator" />
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  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
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  <attribute name="history" value="None" />
  <attribute name="creator_url" value="ebas.nilu.no" />
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  <dimension name="time" length="30" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="qc_elemental_carbon_amean_flags" length="1" />
  <dimension name="qc_elemental_carbon_uncertainty_flags" length="1" />
  <dimension name="qc_organic_carbon_amean_flags" length="1" />
  <dimension name="qc_organic_carbon_uncertainty_flags" length="1" />
  <dimension name="d_Fraction" length="5" />
  <dimension name="qc_organic_carbon_amean_d_Fraction_flags" length="1" />
  <dimension name="qc_total_carbon_amean_flags" length="1" />
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    <attribute name="time_coverage_start" value="2017-12-01T12:00:00Z" />
    <attribute name="time_coverage_end" value="2018-02-26T12:00:00Z" />
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    <attribute name="time_coverage_resolution" value="259200.0" />
    <attribute name="time_coverage_duration" value="P0Y0M87DT0H0M0.000S" />
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    <attribute name="units" value="ug C/m3" />
    <attribute name="ancillary_variables" value="qc_elemental_carbon_amean meta_elemental_carbon_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_statistics" value="arithmetic mean" />
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    <attribute name="ebas_unit" value="ug C/m3" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_station_land_use" value="Residential" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_latitude" type="double" value="43.336" />
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    <attribute name="ebas_blank_correction" value="Not blank corrected" />
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    <attribute name="ebas_charring_correction" value="By laser transmission" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticleorganiccarbonmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle organic carbon mass concentration" />
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    <attribute name="actris_temporal_resolution" value="P3D" />
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  <variable name="qc_organic_carbon_amean_d_Fraction" shape="d_Fraction qc_organic_carbon_amean_d_Fraction_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_organic_carbon_amean_d_Fraction" shape="d_Fraction metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_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_pm10_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="qc_total_carbon_amean meta_total_carbon_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2018-06-08T06:45:00.000000Z" />
    <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="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="total_carbon" />
    <attribute name="ebas_unit" value="ug C/m3" />
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    <attribute name="ebas_blank_correction" value="Not blank corrected" />
    <attribute name="ebas_artifact_correction" value="None" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="ebas_version_description" value="initial revision, manually inspected" />
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    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticletotalcarbonmassconcentration" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
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    <attribute name="calendar" value="standard" />
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    <attribute name="long_name" value="time of ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="d_Fraction" shape="d_Fraction" type="String" />
</netcdf>
