<?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="Attenuation_coefficient, bypass_fraction, equivalent_black_carbon, flow_rate, reference_beam_signal, reference_zero_signal, sensing_beam_signal and sensing_zero_signal at DEM_Athens" />
  <attribute name="summary" value="Attenuation_coefficient, bypass_fraction, equivalent_black_carbon, flow_rate, reference_beam_signal, reference_zero_signal, sensing_beam_signal and sensing_zero_signal at DEM_Athens. These measurements are gathered as a part of the following projects ACTRIS, GAW-WDCA and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['pressure in instrument', 'relative_humidity in instrument (relative_humidity)', 'temperature in instrument', 'attenuation_coefficient in pm10 (mass_concentration_of_attenuation_coefficient_in_pm10_in_air)', 'bypass_fraction in pm10 (mass_concentration_of_bypass_fraction_in_pm10_in_air)', 'equivalent_black_carbon in pm10 (mass_concentration_of_equivalent_black_carbon_in_pm10_in_air)', 'flow_rate in pm10', 'reference_beam_signal in pm10 (mass_concentration_of_reference_beam_signal_in_pm10_in_air)', 'reference_zero_signal in pm10 (mass_concentration_of_reference_zero_signal_in_pm10_in_air)', 'sensing_beam_signal in pm10 (mass_concentration_of_sensing_beam_signal_in_pm10_in_air)', 'sensing_zero_signal in pm10 (mass_concentration_of_sensing_zero_signal_in_pm10_in_air)']" />
  <attribute name="keywords" value="DEM_Athens GR0100B attenuation_coefficient bypass_fraction equivalent_black_carbon flow_rate reference_beam_signal reference_zero_signal sensing_beam_signal sensing_zero_signal pm10 ACTRIS GAW-WDCA relative_humidity mass_concentration_of_attenuation_coefficient_in_pm10_in_air mass_concentration_of_bypass_fraction_in_pm10_in_air mass_concentration_of_equivalent_black_carbon_in_pm10_in_air mass_concentration_of_reference_beam_signal_in_pm10_in_air mass_concentration_of_reference_zero_signal_in_pm10_in_air mass_concentration_of_sensing_beam_signal_in_pm10_in_air mass_concentration_of_sensing_zero_signal_in_pm10_in_air" />
  <attribute name="id" value="VUUH-VW32.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="ACTRIS, GAW-WDCA" />
  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/VUUH-VW32" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Eleftheriadis, K., Vratolis, S., ACTRIS, GAW-WDCA, 2014, Attenuation_coefficient, bypass_fraction, equivalent_black_carbon, flow_rate, reference_beam_signal, reference_zero_signal, sensing_beam_signal and sensing_zero_signal at DEM_Athens, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/VUUH-VW32" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="GR05L &quot;National Centre of Scientific Research&quot; &quot;Demokritos, Athens, Greece&quot;" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2014-07-17T15:33:12.363000Z" />
  <attribute name="date_metadata_modified" value="2014-07-10T00:00:00Z" />
  <attribute name="creator_name" value="Konstantinos Eleftheriadis, Sterios Vratolis" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value=", " />
  <attribute name="creator_institution" value=", " />
  <attribute name="contributor_name" value="Konstantinos Eleftheriadis, Sterios Vratolis" />
  <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" />
  <attribute name="publisher_email" value="ebas@nilu.no" />
  <attribute name="publisher_url" value="https://www.nilu.no/" />
  <attribute name="geospatial_bounds" value="MULTIPOINT Z ((23.816 37.995 270), (23.8159999847 37.9949989319 270))" />
  <attribute name="geospatial_lat_min" type="double" value="37.9949989319" />
  <attribute name="geospatial_lat_max" type="double" value="37.995" />
  <attribute name="geospatial_lon_min" type="double" value="23.8159999847" />
  <attribute name="geospatial_lon_max" type="double" value="23.816" />
  <attribute name="geospatial_vertical_min" type="double" value="270.0" />
  <attribute name="geospatial_vertical_max" type="double" value="270.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="time_coverage_start" value="2013-01-01T00:00:00Z" />
  <attribute name="time_coverage_end" value="2013-01-06T23:05:00Z" />
  <attribute name="time_coverage_duration" value="P0000-00-05T23:05:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-00T00:00:00" />
  <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="Eleftheriadis, K., Vratolis, S., ACTRIS, GAW-WDCA, 2014, Attenuation_coefficient, bypass_fraction, equivalent_black_carbon, flow_rate, reference_beam_signal, reference_zero_signal, sensing_beam_signal and sensing_zero_signal at DEM_Athens, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/VUUH-VW32" />
  <attribute name="ebas_set_type_code" value="TU" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="VUUH-VW32.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/VUUH-VW32" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/VUUH-VW32" />
  <attribute name="ebas_file_creation" value="2026-05-17T01:59:13.773884Z" />
  <attribute name="ebas_export_state" value="2014-07-17T15:33:12.363000Z" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="2013-01-01T00:00:00.000000Z" />
  <attribute name="ebas_revision_date" value="2014-07-10T00:00:00.000000Z" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="initial revision" />
  <attribute name="ebas_statistics" value="arithmetic mean" />
  <attribute name="ebas_data_level" value="0" />
  <attribute name="ebas_period_code" value="6d" />
  <attribute name="ebas_resolution_code" value="5mn" />
  <attribute name="ebas_sample_duration" value="5mn" />
  <attribute name="ebas_orig_time_res" value="5mn" />
  <attribute name="ebas_station_code" value="GR0100B" />
  <attribute name="ebas_platform_code" value="GR0100S" />
  <attribute name="ebas_station_name" value="DEM_Athens" />
  <attribute name="ebas_station_wdca_id" value="GAWAGR__DEM" />
  <attribute name="ebas_station_gaw_id" value="DEM" />
  <attribute name="ebas_station_gaw_name" value="Demokritos Athens" />
  <attribute name="ebas_station_land_use" value="Forest" />
  <attribute name="ebas_station_setting" value="Urban and center city" />
  <attribute name="ebas_station_gaw_type" value="R" />
  <attribute name="ebas_station_wmo_region" type="long" value="6" />
  <attribute name="ebas_station_latitude" type="double" value="37.9949989319" />
  <attribute name="ebas_station_longitude" type="double" value="23.8159999847" />
  <attribute name="ebas_station_altitude" value="270.0 m" />
  <attribute name="ebas_measurement_latitude" type="double" value="37.995" />
  <attribute name="ebas_measurement_longitude" type="double" value="23.816" />
  <attribute name="ebas_measurement_altitude" value="270.0 m" />
  <attribute name="ebas_measurement_height" value="10.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_laboratory_code" value="GR05L" />
  <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
  <attribute name="ebas_instrument_name" value="Magee31_GR01_DEM" />
  <attribute name="ebas_instrument_manufacturer" value="Magee" />
  <attribute name="ebas_instrument_model" value="AE31" />
  <attribute name="ebas_instrument_serial_number" value="772" />
  <attribute name="ebas_method_ref" value="GR05L_aethalometer_AE31_control_lev0_0_0_1" />
  <attribute name="ebas_standard_method" value="None" />
  <attribute name="ebas_inlet_type" value="Impactor--direct" />
  <attribute name="ebas_inlet_description" value="pm10 impactor for a nominal flow of 8 l/min" />
  <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
  <attribute name="ebas_humidity_temperaure_control_description" value="The sample is dried in a nafion dryer by counterflow of filtered, dry air and measured at sample inlet" />
  <attribute name="ebas_volume_std_temperature" value="293.15 K" />
  <attribute name="ebas_volume_std_pressure" value="1013.00 hPa" />
  <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
  <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
  <attribute name="ebas_organization" value="GR05L, National Centre of Scientific Research, , , &quot;Demokritos, Athens, Greece&quot;, , , , " />
  <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
  <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
  <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
  <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
  <attribute name="ebas_submitter" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
  <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgement details from data originator" />
  <attribute name="ebas_comment" value="None" />
  <attribute name="_NCProperties" value="version=2,netcdf=4.9.3,hdf5=1.14.6" />
  <attribute name="Metadata_Conventions" value="Unidata Dataset Discovery v1.0" />
  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
  <attribute name="standard_name_vocabulary" value="CF-1.7, ACDD-1.3" />
  <attribute name="history" value="None" />
  <attribute name="creator_url" value="ebas.nilu.no" />
  <attribute name="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="time" length="1717" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="d_Location_d0" length="1" />
  <dimension name="qc_pressure_flags" length="2" />
  <dimension name="d_Location_d1" length="1" />
  <dimension name="qc_relative_humidity_flags" length="1" />
  <dimension name="qc_temperature_flags" length="1" />
  <dimension name="d_Wavelength" length="7" />
  <dimension name="qc_attenuation_coefficient_flags" length="1" />
  <dimension name="qc_bypass_fraction_flags" length="1" />
  <dimension name="qc_equivalent_black_carbon_flags" length="1" />
  <dimension name="d_Location_d2" length="1" />
  <dimension name="qc_flow_rate_flags" length="1" />
  <dimension name="qc_reference_beam_signal_flags" length="1" />
  <dimension name="qc_reference_zero_signal_flags" length="1" />
  <dimension name="qc_sensing_beam_signal_flags" length="1" />
  <dimension name="qc_sensing_zero_signal_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2013-01-01T00:02:30Z" />
    <attribute name="time_coverage_end" value="2013-01-06T23:02:30Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="300.0" />
    <attribute name="time_coverage_duration" value="P0Y0M5DT23H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-05-18" />
    <attribute name="nciso_version" value="2.4.8" />
  </group>
  <variable name="time_bnds" shape="time tbnds" type="double">
    <attribute name="long_name" value="time bounds for measurement" />
  </variable>
  <variable name="metadata_time_bnds" shape="metadata_time tbnds" type="double">
    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
  </variable>
  <variable name="v_pressure" shape="d_Location_d0 time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="hPa" />
    <attribute name="ancillary_variables" value="qc_pressure meta_pressure" />
    <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="2014-07-10T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="0" />
    <attribute name="ebas_sample_duration" value="5mn" />
    <attribute name="ebas_orig_time_res" value="5mn" />
    <attribute name="ebas_station_code" value="GR0100B" />
    <attribute name="ebas_platform_code" value="GR0100S" />
    <attribute name="ebas_station_name" value="DEM_Athens" />
    <attribute name="ebas_station_wdca_id" value="GAWAGR__DEM" />
    <attribute name="ebas_station_gaw_id" value="DEM" />
    <attribute name="ebas_station_gaw_name" value="Demokritos Athens" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="37.9949989319" />
    <attribute name="ebas_station_longitude" type="double" value="23.8159999847" />
    <attribute name="ebas_station_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="37.995" />
    <attribute name="ebas_measurement_longitude" type="double" value="23.816" />
    <attribute name="ebas_measurement_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pressure" />
    <attribute name="ebas_unit" value="hPa" />
    <attribute name="ebas_matrix" value="instrument" />
    <attribute name="ebas_laboratory_code" value="GR05L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee31_GR01_DEM" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_instrument_serial_number" value="772" />
    <attribute name="ebas_method_ref" value="GR05L_aethalometer_AE31_control_lev0_0_0_1" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="pm10 impactor for a nominal flow of 8 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="The sample is dried in a nafion dryer by counterflow of filtered, dry air and measured at sample inlet" />
    <attribute name="ebas_volume_std_temperature" value="293.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.00 hPa" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="GR05L, National Centre of Scientific Research, , , &quot;Demokritos, Athens, Greece&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_submitter" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="qc_pressure" shape="d_Location_d0 qc_pressure_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_pressure" shape="d_Location_d0 metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_relative_humidity" shape="d_Location_d1 time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="relative_humidity" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="%" />
    <attribute name="ancillary_variables" value="qc_relative_humidity meta_relative_humidity" />
    <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="2014-07-10T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="0" />
    <attribute name="ebas_sample_duration" value="5mn" />
    <attribute name="ebas_orig_time_res" value="5mn" />
    <attribute name="ebas_station_code" value="GR0100B" />
    <attribute name="ebas_platform_code" value="GR0100S" />
    <attribute name="ebas_station_name" value="DEM_Athens" />
    <attribute name="ebas_station_wdca_id" value="GAWAGR__DEM" />
    <attribute name="ebas_station_gaw_id" value="DEM" />
    <attribute name="ebas_station_gaw_name" value="Demokritos Athens" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="37.9949989319" />
    <attribute name="ebas_station_longitude" type="double" value="23.8159999847" />
    <attribute name="ebas_station_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="37.995" />
    <attribute name="ebas_measurement_longitude" type="double" value="23.816" />
    <attribute name="ebas_measurement_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="relative_humidity" />
    <attribute name="ebas_unit" value="%" />
    <attribute name="ebas_matrix" value="instrument" />
    <attribute name="ebas_laboratory_code" value="GR05L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee31_GR01_DEM" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_instrument_serial_number" value="772" />
    <attribute name="ebas_method_ref" value="GR05L_aethalometer_AE31_control_lev0_0_0_1" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="pm10 impactor for a nominal flow of 8 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="The sample is dried in a nafion dryer by counterflow of filtered, dry air and measured at sample inlet" />
    <attribute name="ebas_volume_std_temperature" value="293.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.00 hPa" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="GR05L, National Centre of Scientific Research, , , &quot;Demokritos, Athens, Greece&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_submitter" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="qc_relative_humidity" shape="d_Location_d1 qc_relative_humidity_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_relative_humidity" shape="d_Location_d1 metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_temperature" shape="d_Location_d0 time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="K" />
    <attribute name="ancillary_variables" value="qc_temperature meta_temperature" />
    <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="2014-07-10T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="0" />
    <attribute name="ebas_sample_duration" value="5mn" />
    <attribute name="ebas_orig_time_res" value="5mn" />
    <attribute name="ebas_station_code" value="GR0100B" />
    <attribute name="ebas_platform_code" value="GR0100S" />
    <attribute name="ebas_station_name" value="DEM_Athens" />
    <attribute name="ebas_station_wdca_id" value="GAWAGR__DEM" />
    <attribute name="ebas_station_gaw_id" value="DEM" />
    <attribute name="ebas_station_gaw_name" value="Demokritos Athens" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="37.9949989319" />
    <attribute name="ebas_station_longitude" type="double" value="23.8159999847" />
    <attribute name="ebas_station_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="37.995" />
    <attribute name="ebas_measurement_longitude" type="double" value="23.816" />
    <attribute name="ebas_measurement_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="temperature" />
    <attribute name="ebas_unit" value="K" />
    <attribute name="ebas_matrix" value="instrument" />
    <attribute name="ebas_laboratory_code" value="GR05L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee31_GR01_DEM" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_instrument_serial_number" value="772" />
    <attribute name="ebas_method_ref" value="GR05L_aethalometer_AE31_control_lev0_0_0_1" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="pm10 impactor for a nominal flow of 8 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="The sample is dried in a nafion dryer by counterflow of filtered, dry air and measured at sample inlet" />
    <attribute name="ebas_volume_std_temperature" value="293.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.00 hPa" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="GR05L, National Centre of Scientific Research, , , &quot;Demokritos, Athens, Greece&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_submitter" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="qc_temperature" shape="d_Location_d0 qc_temperature_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_temperature" shape="d_Location_d0 metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_attenuation_coefficient" shape="d_Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_attenuation_coefficient_in_pm10_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="no unit" />
    <attribute name="ancillary_variables" value="qc_attenuation_coefficient meta_attenuation_coefficient" />
    <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="2014-07-10T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="0" />
    <attribute name="ebas_sample_duration" value="5mn" />
    <attribute name="ebas_orig_time_res" value="5mn" />
    <attribute name="ebas_station_code" value="GR0100B" />
    <attribute name="ebas_platform_code" value="GR0100S" />
    <attribute name="ebas_station_name" value="DEM_Athens" />
    <attribute name="ebas_station_wdca_id" value="GAWAGR__DEM" />
    <attribute name="ebas_station_gaw_id" value="DEM" />
    <attribute name="ebas_station_gaw_name" value="Demokritos Athens" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="37.9949989319" />
    <attribute name="ebas_station_longitude" type="double" value="23.8159999847" />
    <attribute name="ebas_station_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="37.995" />
    <attribute name="ebas_measurement_longitude" type="double" value="23.816" />
    <attribute name="ebas_measurement_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="attenuation_coefficient" />
    <attribute name="ebas_unit" value="no unit" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="GR05L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee31_GR01_DEM" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_instrument_serial_number" value="772" />
    <attribute name="ebas_method_ref" value="GR05L_aethalometer_AE31_control_lev0_0_0_1" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="pm10 impactor for a nominal flow of 8 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="The sample is dried in a nafion dryer by counterflow of filtered, dry air and measured at sample inlet" />
    <attribute name="ebas_volume_std_temperature" value="293.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.00 hPa" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="GR05L, National Centre of Scientific Research, , , &quot;Demokritos, Athens, Greece&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_submitter" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="qc_attenuation_coefficient" shape="d_Wavelength qc_attenuation_coefficient_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_attenuation_coefficient" shape="d_Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_bypass_fraction" shape="d_Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_bypass_fraction_in_pm10_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="no unit" />
    <attribute name="ancillary_variables" value="qc_bypass_fraction meta_bypass_fraction" />
    <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="2014-07-10T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="0" />
    <attribute name="ebas_sample_duration" value="5mn" />
    <attribute name="ebas_orig_time_res" value="5mn" />
    <attribute name="ebas_station_code" value="GR0100B" />
    <attribute name="ebas_platform_code" value="GR0100S" />
    <attribute name="ebas_station_name" value="DEM_Athens" />
    <attribute name="ebas_station_wdca_id" value="GAWAGR__DEM" />
    <attribute name="ebas_station_gaw_id" value="DEM" />
    <attribute name="ebas_station_gaw_name" value="Demokritos Athens" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="37.9949989319" />
    <attribute name="ebas_station_longitude" type="double" value="23.8159999847" />
    <attribute name="ebas_station_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="37.995" />
    <attribute name="ebas_measurement_longitude" type="double" value="23.816" />
    <attribute name="ebas_measurement_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="bypass_fraction" />
    <attribute name="ebas_unit" value="no unit" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="GR05L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee31_GR01_DEM" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_instrument_serial_number" value="772" />
    <attribute name="ebas_method_ref" value="GR05L_aethalometer_AE31_control_lev0_0_0_1" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="pm10 impactor for a nominal flow of 8 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="The sample is dried in a nafion dryer by counterflow of filtered, dry air and measured at sample inlet" />
    <attribute name="ebas_volume_std_temperature" value="293.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.00 hPa" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="GR05L, National Centre of Scientific Research, , , &quot;Demokritos, Athens, Greece&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_submitter" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="qc_bypass_fraction" shape="d_Wavelength qc_bypass_fraction_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_bypass_fraction" shape="d_Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_equivalent_black_carbon" shape="d_Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_equivalent_black_carbon_in_pm10_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_equivalent_black_carbon meta_equivalent_black_carbon" />
    <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="2014-07-10T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="0" />
    <attribute name="ebas_sample_duration" value="5mn" />
    <attribute name="ebas_orig_time_res" value="5mn" />
    <attribute name="ebas_station_code" value="GR0100B" />
    <attribute name="ebas_platform_code" value="GR0100S" />
    <attribute name="ebas_station_name" value="DEM_Athens" />
    <attribute name="ebas_station_wdca_id" value="GAWAGR__DEM" />
    <attribute name="ebas_station_gaw_id" value="DEM" />
    <attribute name="ebas_station_gaw_name" value="Demokritos Athens" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="37.9949989319" />
    <attribute name="ebas_station_longitude" type="double" value="23.8159999847" />
    <attribute name="ebas_station_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="37.995" />
    <attribute name="ebas_measurement_longitude" type="double" value="23.816" />
    <attribute name="ebas_measurement_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="equivalent_black_carbon" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="GR05L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee31_GR01_DEM" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_instrument_serial_number" value="772" />
    <attribute name="ebas_method_ref" value="GR05L_aethalometer_AE31_control_lev0_0_0_1" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="pm10 impactor for a nominal flow of 8 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="The sample is dried in a nafion dryer by counterflow of filtered, dry air and measured at sample inlet" />
    <attribute name="ebas_volume_std_temperature" value="293.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.00 hPa" />
    <attribute name="ebas_detection_limit" value="0.01 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by instrument counting statistics, no detection limit flag used" />
    <attribute name="ebas_measurement_uncertainty" value="0.01 ug/m3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Determined by instrument noise characteristics during dynamic zero run for 96 hours, no detection limit flag used" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="GR05L, National Centre of Scientific Research, , , &quot;Demokritos, Athens, Greece&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_submitter" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticleequivalentblackcarbonmassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle equivalent black carbon mass concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/PM10" />
    <attribute name="actris_matrix_preferred_term" value="PM10" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/filterabsorptionphotometer" />
    <attribute name="actris_instrument_type_preferred_term" value="filter absorption photometer" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCA" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, GAW-WDCA" />
    <attribute name="actris_temporal_resolution" value="PT0S" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_equivalent_black_carbon" shape="d_Wavelength qc_equivalent_black_carbon_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_equivalent_black_carbon" shape="d_Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_flow_rate" shape="d_Location_d2 time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="l/min" />
    <attribute name="ancillary_variables" value="qc_flow_rate meta_flow_rate" />
    <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="2014-07-10T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="0" />
    <attribute name="ebas_sample_duration" value="5mn" />
    <attribute name="ebas_orig_time_res" value="5mn" />
    <attribute name="ebas_station_code" value="GR0100B" />
    <attribute name="ebas_platform_code" value="GR0100S" />
    <attribute name="ebas_station_name" value="DEM_Athens" />
    <attribute name="ebas_station_wdca_id" value="GAWAGR__DEM" />
    <attribute name="ebas_station_gaw_id" value="DEM" />
    <attribute name="ebas_station_gaw_name" value="Demokritos Athens" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="37.9949989319" />
    <attribute name="ebas_station_longitude" type="double" value="23.8159999847" />
    <attribute name="ebas_station_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="37.995" />
    <attribute name="ebas_measurement_longitude" type="double" value="23.816" />
    <attribute name="ebas_measurement_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="flow_rate" />
    <attribute name="ebas_unit" value="l/min" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="GR05L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee31_GR01_DEM" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_instrument_serial_number" value="772" />
    <attribute name="ebas_method_ref" value="GR05L_aethalometer_AE31_control_lev0_0_0_1" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="pm10 impactor for a nominal flow of 8 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="The sample is dried in a nafion dryer by counterflow of filtered, dry air and measured at sample inlet" />
    <attribute name="ebas_volume_std_temperature" value="293.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.00 hPa" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="GR05L, National Centre of Scientific Research, , , &quot;Demokritos, Athens, Greece&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_submitter" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="qc_flow_rate" shape="d_Location_d2 qc_flow_rate_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_flow_rate" shape="d_Location_d2 metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_reference_beam_signal" shape="d_Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_reference_beam_signal_in_pm10_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="no unit" />
    <attribute name="ancillary_variables" value="qc_reference_beam_signal meta_reference_beam_signal" />
    <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="2014-07-10T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="0" />
    <attribute name="ebas_sample_duration" value="5mn" />
    <attribute name="ebas_orig_time_res" value="5mn" />
    <attribute name="ebas_station_code" value="GR0100B" />
    <attribute name="ebas_platform_code" value="GR0100S" />
    <attribute name="ebas_station_name" value="DEM_Athens" />
    <attribute name="ebas_station_wdca_id" value="GAWAGR__DEM" />
    <attribute name="ebas_station_gaw_id" value="DEM" />
    <attribute name="ebas_station_gaw_name" value="Demokritos Athens" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="37.9949989319" />
    <attribute name="ebas_station_longitude" type="double" value="23.8159999847" />
    <attribute name="ebas_station_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="37.995" />
    <attribute name="ebas_measurement_longitude" type="double" value="23.816" />
    <attribute name="ebas_measurement_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="reference_beam_signal" />
    <attribute name="ebas_unit" value="no unit" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="GR05L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee31_GR01_DEM" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_instrument_serial_number" value="772" />
    <attribute name="ebas_method_ref" value="GR05L_aethalometer_AE31_control_lev0_0_0_1" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="pm10 impactor for a nominal flow of 8 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="The sample is dried in a nafion dryer by counterflow of filtered, dry air and measured at sample inlet" />
    <attribute name="ebas_volume_std_temperature" value="293.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.00 hPa" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="GR05L, National Centre of Scientific Research, , , &quot;Demokritos, Athens, Greece&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_submitter" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="qc_reference_beam_signal" shape="d_Wavelength qc_reference_beam_signal_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_reference_beam_signal" shape="d_Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_reference_zero_signal" shape="d_Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_reference_zero_signal_in_pm10_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="no unit" />
    <attribute name="ancillary_variables" value="qc_reference_zero_signal meta_reference_zero_signal" />
    <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="2014-07-10T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="0" />
    <attribute name="ebas_sample_duration" value="5mn" />
    <attribute name="ebas_orig_time_res" value="5mn" />
    <attribute name="ebas_station_code" value="GR0100B" />
    <attribute name="ebas_platform_code" value="GR0100S" />
    <attribute name="ebas_station_name" value="DEM_Athens" />
    <attribute name="ebas_station_wdca_id" value="GAWAGR__DEM" />
    <attribute name="ebas_station_gaw_id" value="DEM" />
    <attribute name="ebas_station_gaw_name" value="Demokritos Athens" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="37.9949989319" />
    <attribute name="ebas_station_longitude" type="double" value="23.8159999847" />
    <attribute name="ebas_station_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="37.995" />
    <attribute name="ebas_measurement_longitude" type="double" value="23.816" />
    <attribute name="ebas_measurement_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="reference_zero_signal" />
    <attribute name="ebas_unit" value="no unit" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="GR05L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee31_GR01_DEM" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_instrument_serial_number" value="772" />
    <attribute name="ebas_method_ref" value="GR05L_aethalometer_AE31_control_lev0_0_0_1" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="pm10 impactor for a nominal flow of 8 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="The sample is dried in a nafion dryer by counterflow of filtered, dry air and measured at sample inlet" />
    <attribute name="ebas_volume_std_temperature" value="293.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.00 hPa" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="GR05L, National Centre of Scientific Research, , , &quot;Demokritos, Athens, Greece&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_submitter" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="qc_reference_zero_signal" shape="d_Wavelength qc_reference_zero_signal_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_reference_zero_signal" shape="d_Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_sensing_beam_signal" shape="d_Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_sensing_beam_signal_in_pm10_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="no unit" />
    <attribute name="ancillary_variables" value="qc_sensing_beam_signal meta_sensing_beam_signal" />
    <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="2014-07-10T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="0" />
    <attribute name="ebas_sample_duration" value="5mn" />
    <attribute name="ebas_orig_time_res" value="5mn" />
    <attribute name="ebas_station_code" value="GR0100B" />
    <attribute name="ebas_platform_code" value="GR0100S" />
    <attribute name="ebas_station_name" value="DEM_Athens" />
    <attribute name="ebas_station_wdca_id" value="GAWAGR__DEM" />
    <attribute name="ebas_station_gaw_id" value="DEM" />
    <attribute name="ebas_station_gaw_name" value="Demokritos Athens" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="37.9949989319" />
    <attribute name="ebas_station_longitude" type="double" value="23.8159999847" />
    <attribute name="ebas_station_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="37.995" />
    <attribute name="ebas_measurement_longitude" type="double" value="23.816" />
    <attribute name="ebas_measurement_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="sensing_beam_signal" />
    <attribute name="ebas_unit" value="no unit" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="GR05L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee31_GR01_DEM" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_instrument_serial_number" value="772" />
    <attribute name="ebas_method_ref" value="GR05L_aethalometer_AE31_control_lev0_0_0_1" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="pm10 impactor for a nominal flow of 8 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="The sample is dried in a nafion dryer by counterflow of filtered, dry air and measured at sample inlet" />
    <attribute name="ebas_volume_std_temperature" value="293.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.00 hPa" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="GR05L, National Centre of Scientific Research, , , &quot;Demokritos, Athens, Greece&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_submitter" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="qc_sensing_beam_signal" shape="d_Wavelength qc_sensing_beam_signal_flags time" type="int">
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
  </variable>
  <variable name="meta_sensing_beam_signal" shape="d_Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_sensing_zero_signal" shape="d_Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_sensing_zero_signal_in_pm10_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="no unit" />
    <attribute name="ancillary_variables" value="qc_sensing_zero_signal meta_sensing_zero_signal" />
    <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="2014-07-10T00:00:00.000000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="0" />
    <attribute name="ebas_sample_duration" value="5mn" />
    <attribute name="ebas_orig_time_res" value="5mn" />
    <attribute name="ebas_station_code" value="GR0100B" />
    <attribute name="ebas_platform_code" value="GR0100S" />
    <attribute name="ebas_station_name" value="DEM_Athens" />
    <attribute name="ebas_station_wdca_id" value="GAWAGR__DEM" />
    <attribute name="ebas_station_gaw_id" value="DEM" />
    <attribute name="ebas_station_gaw_name" value="Demokritos Athens" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Urban and center city" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="37.9949989319" />
    <attribute name="ebas_station_longitude" type="double" value="23.8159999847" />
    <attribute name="ebas_station_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="37.995" />
    <attribute name="ebas_measurement_longitude" type="double" value="23.816" />
    <attribute name="ebas_measurement_altitude" value="270.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="sensing_zero_signal" />
    <attribute name="ebas_unit" value="no unit" />
    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="GR05L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee31_GR01_DEM" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE31" />
    <attribute name="ebas_instrument_serial_number" value="772" />
    <attribute name="ebas_method_ref" value="GR05L_aethalometer_AE31_control_lev0_0_0_1" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="pm10 impactor for a nominal flow of 8 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="The sample is dried in a nafion dryer by counterflow of filtered, dry air and measured at sample inlet" />
    <attribute name="ebas_volume_std_temperature" value="293.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.00 hPa" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="GR05L, National Centre of Scientific Research, , , &quot;Demokritos, Athens, Greece&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&quot;, &quot;The World Data Centre for Aerosols is the data repository and archive for microphysical, optical, and chemical properties of atmospheric aerosol of the World Meteorological Organisation's (WMO) Global Atmosphere Watch (GAW) programme.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_submitter" value="&quot;Eleftheriadis, Konstantinos, , , , , , , , , &quot;, &quot;Vratolis, Sterios, , , , , , , , , &quot;" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="qc_sensing_zero_signal" shape="d_Wavelength qc_sensing_zero_signal_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_sensing_zero_signal" shape="d_Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="metadata_time" shape="metadata_time" type="double">
    <attribute name="long_name" value="time of ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="d_Location_d0" shape="d_Location_d0" type="String" />
  <variable name="d_Location_d1" shape="d_Location_d1" type="String" />
  <variable name="d_Wavelength" shape="d_Wavelength" type="double" />
  <variable name="d_Location_d2" shape="d_Location_d2" type="String" />
</netcdf>
