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  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Pm10_mass at Hyytiälä" />
  <attribute name="summary" value="Pm10_mass at Hyytiälä. These measurements are gathered as a part of the following projects GAW-WDCA and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['pressure in instrument', 'temperature in instrument', 'pm10_mass in pm10 (mass_concentration_of_pm10_ambient_aerosol_particles_in_air)']" />
  <attribute name="keywords" value="Hyytiälä FI0050R pm10_mass pm10 GAW-WDCA mass_concentration_of_pm10_ambient_aerosol_particles_in_air" />
  <attribute name="id" value="E48E-EG6U.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="GAW-WDCA" />
  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/E48E-EG6U" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Kulmala, M., Petaja, T., GAW-WDCA, 2026, Pm10_mass at Hyytiälä, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/E48E-EG6U" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="FI03L &quot;University of Helsinki&quot; UHEL &quot;Institute for Atmospheric and Earth System Research (INAR)&quot; &quot;PO BOX 64&quot; FI-00014 &quot;University of Helsinki&quot; Finland" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2026-04-22T08:02:26.554937Z" />
  <attribute name="date_metadata_modified" value="2026-04-22T08:02:26Z" />
  <attribute name="creator_name" value="Markku Kulmala, Tuukka Petaja" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value=", tuukka.petaja@helsinki.fi" />
  <attribute name="creator_institution" value=", &quot;University of Helsinki, Division of Atmospheric Sciences, Department of Physics, UHEL&quot;" />
  <attribute name="contributor_name" value="Lauri Ahonen" />
  <attribute name="contributor_role" value="data submitter" />
  <attribute name="publisher_type" value="institution" />
  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_institution" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_email" value="ebas@nilu.no" />
  <attribute name="publisher_url" value="https://www.nilu.no/" />
  <attribute name="geospatial_bounds" value="MULTIPOINT Z ((24.295 61.847 179), (24.283333 61.85 179))" />
  <attribute name="geospatial_lat_min" type="double" value="61.847" />
  <attribute name="geospatial_lat_max" type="double" value="61.85" />
  <attribute name="geospatial_lon_min" type="double" value="24.283333" />
  <attribute name="geospatial_lon_max" type="double" value="24.295" />
  <attribute name="geospatial_vertical_min" type="double" value="179.0" />
  <attribute name="geospatial_vertical_max" type="double" value="179.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="time_coverage_start" value="2016-01-01T00:00:00Z" />
  <attribute name="time_coverage_end" value="2026-01-01T00:00:00Z" />
  <attribute name="time_coverage_duration" value="P0010-00-00T00:00:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-00T01:00:00" />
  <attribute name="timezone" value="UTC" />
  <attribute name="ebas_data_definition" value="EBAS_1.1" />
  <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="ebas_citation" value="Kulmala, M., Petaja, T., GAW-WDCA, 2026, Pm10_mass at Hyytiälä, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/E48E-EG6U" />
  <attribute name="ebas_set_type_code" value="TU" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="E48E-EG6U.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/E48E-EG6U" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/E48E-EG6U" />
  <attribute name="ebas_file_creation" value="2026-05-22T04:59:39.214495Z" />
  <attribute name="ebas_export_state" value="2026-04-22T08:02:26.554937Z" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="2016-01-01T00:00:00.000000Z" />
  <attribute name="ebas_revision_date" value="2026-04-22T08:02:26.554937Z" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="10y" />
  <attribute name="ebas_resolution_code" value="1h" />
  <attribute name="ebas_sample_duration" value="1h" />
  <attribute name="ebas_orig_time_res" value="1s" />
  <attribute name="ebas_station_code" value="FI0050R" />
  <attribute name="ebas_platform_code" value="FI0050S" />
  <attribute name="ebas_station_name" value="Hyytiälä" />
  <attribute name="ebas_station_gaw_id" value="SMR" />
  <attribute name="ebas_station_state_province" value="Pirka" />
  <attribute name="ebas_station_land_use" value="Forest" />
  <attribute name="ebas_station_setting" value="Rural" />
  <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="61.85" />
  <attribute name="ebas_station_longitude" type="double" value="24.283333" />
  <attribute name="ebas_station_altitude" value="181.0 m" />
  <attribute name="ebas_measurement_latitude" type="double" value="61.847" />
  <attribute name="ebas_measurement_longitude" type="double" value="24.295" />
  <attribute name="ebas_measurement_altitude" value="179.0 m" />
  <attribute name="ebas_measurement_height" value="5.5 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_laboratory_code" value="FI03L" />
  <attribute name="ebas_instrument_type" value="beta_gauge_particulate_sampler" />
  <attribute name="ebas_instrument_name" value="SHARP" />
  <attribute name="ebas_instrument_manufacturer" value="Thermo" />
  <attribute name="ebas_instrument_model" value="5030SHARP" />
  <attribute name="ebas_instrument_serial_number" value="E-762" />
  <attribute name="ebas_method_ref" value="FI03L_pm10_SHARP" />
  <attribute name="ebas_standard_method" value="None" />
  <attribute name="ebas_inlet_type" value="Hat or hood" />
  <attribute name="ebas_inlet_description" value="inlet as delivered with instrument, incl. dryer and hat" />
  <attribute name="ebas_humidity_temperaure_control" value="Temperature controlled" />
  <attribute name="ebas_humidity_temperaure_control_description" value="Sample heated to the 35 C RH&lt; 40%." />
  <attribute name="ebas_volume_std_temperature" value="273.15 K" />
  <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
  <attribute name="ebas_measurement_uncertainty_expl" value="typical value of unit-to-unit variability" />
  <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="FI03L, University of Helsinki, UHEL, Institute for Atmospheric and Earth System Research (INAR), PO BOX 64, , FI-00014, University of Helsinki, Finland" />
  <attribute name="ebas_framework_acronym" value="GAW-WDCA" />
  <attribute name="ebas_framework_name" value="World Data Centre for Aerosols" />
  <attribute name="ebas_framework_description" value="&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="Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Kulmala, Markku, , , , , , , , , &quot;, &quot;Petaja, Tuukka, tuukka.petaja@helsinki.fi, University of Helsinki, UHEL, &quot;&quot;Division of Atmospheric Sciences, Department of Physics&quot;&quot;, PO BOX 64, , FI-00014, Helsinki, Finland&quot;" />
  <attribute name="ebas_submitter" value="&quot;Ahonen, Lauri, lauri.r.ahonen@helsinki.fi, University of Helsinki, UHEL, Institute of Atmospheric and Earth System Research INAR, Gustaf Hällströmin katu 2a, , FIN-00560, Helsinki, Finland&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 framework: GAW-WDCA. Request acknowledgement details from data originator" />
  <attribute name="ebas_comment" value="Instrument installed and operated according to manual" />
  <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="87672" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="10" />
  <dimension name="d_Location" length="1" />
  <dimension name="qc_pressure_flags" length="1" />
  <dimension name="qc_temperature_flags" length="1" />
  <dimension name="qc_pm10_mass_amean_flags" length="1" />
  <dimension name="qc_pm10_mass_prec1587_flags" length="1" />
  <dimension name="qc_pm10_mass_perc8413_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2016-01-01T00:30:00Z" />
    <attribute name="time_coverage_end" value="2025-12-31T23:30:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="3600.0" />
    <attribute name="time_coverage_duration" value="P0Y0M3652DT23H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-06-05" />
    <attribute name="nciso_version" value="2.4.8" />
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  <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 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="2026-04-22T08:02:26.554937Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1s" />
    <attribute name="ebas_station_code" value="FI0050R" />
    <attribute name="ebas_platform_code" value="FI0050S" />
    <attribute name="ebas_station_name" value="Hyytiälä" />
    <attribute name="ebas_station_gaw_id" value="SMR" />
    <attribute name="ebas_station_state_province" value="Pirka" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Rural" />
    <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="61.85" />
    <attribute name="ebas_station_longitude" type="double" value="24.283333" />
    <attribute name="ebas_station_altitude" value="181.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="61.847" />
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    <attribute name="ebas_measurement_altitude" value="179.0 m" />
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    <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="FI03L" />
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    <attribute name="ebas_method_ref" value="FI03L_pm10_SHARP" />
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    <attribute name="ebas_inlet_description" value="inlet as delivered with instrument, incl. dryer and hat" />
    <attribute name="ebas_humidity_temperaure_control" value="Temperature controlled" />
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    <attribute name="ebas_measurement_uncertainty_expl" value="typical value of unit-to-unit variability" />
    <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" />
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    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&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="Markus Fiebig" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="cell_methods" value="time: mean" />
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    <attribute name="ebas_station_setting" value="Rural" />
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    <attribute name="ebas_framework_contact_name" value="Markus Fiebig" />
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    <attribute name="ebas_submitter" value="&quot;Ahonen, Lauri, lauri.r.ahonen@helsinki.fi, University of Helsinki, UHEL, Institute of Atmospheric and Earth System Research INAR, Gustaf Hällströmin katu 2a, , FIN-00560, Helsinki, Finland&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 framework: GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Instrument installed and operated according to manual" />
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    <attribute name="units" value="1" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_pm10_ambient_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="qc_pm10_mass_amean meta_pm10_mass_amean" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
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    <attribute name="ebas_station_code" value="FI0050R" />
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    <attribute name="ebas_station_name" value="Hyytiälä" />
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    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Rural" />
    <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="61.85" />
    <attribute name="ebas_station_longitude" type="double" value="24.283333" />
    <attribute name="ebas_station_altitude" value="181.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="61.847" />
    <attribute name="ebas_measurement_longitude" type="double" value="24.295" />
    <attribute name="ebas_measurement_altitude" value="179.0 m" />
    <attribute name="ebas_measurement_height" value="5.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pm10_mass" />
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    <attribute name="ebas_matrix" value="pm10" />
    <attribute name="ebas_laboratory_code" value="FI03L" />
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    <attribute name="ebas_instrument_name" value="SHARP" />
    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
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    <attribute name="ebas_method_ref" value="FI03L_pm10_SHARP" />
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    <attribute name="ebas_inlet_description" value="inlet as delivered with instrument, incl. dryer and hat" />
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    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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    <attribute name="ebas_measurement_uncertainty" value="30.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="typical value of unit-to-unit variability" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Kulmala, Markku, , , , , , , , , &quot;, &quot;Petaja, Tuukka, tuukka.petaja@helsinki.fi, University of Helsinki, UHEL, &quot;&quot;Division of Atmospheric Sciences, Department of Physics&quot;&quot;, PO BOX 64, , FI-00014, Helsinki, Finland&quot;" />
    <attribute name="ebas_submitter" value="&quot;Ahonen, Lauri, lauri.r.ahonen@helsinki.fi, University of Helsinki, UHEL, Institute of Atmospheric and Earth System Research INAR, Gustaf Hällströmin katu 2a, , FIN-00560, Helsinki, Finland&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 framework: GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Instrument installed and operated according to manual" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlemassconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle mass concentration" />
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    <attribute name="actris_framework_preferred_term" value="GAW-WDCA" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
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  <variable name="qc_pm10_mass_amean" shape="qc_pm10_mass_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_pm10_mass_amean" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_pm10_mass_prec1587" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_pm10_ambient_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2026-04-22T08:02:26.554937Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_statistics" value="percentile:15.87" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1s" />
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    <attribute name="ebas_platform_code" value="FI0050S" />
    <attribute name="ebas_station_name" value="Hyytiälä" />
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    <attribute name="ebas_station_state_province" value="Pirka" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="R" />
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    <attribute name="ebas_station_latitude" type="double" value="61.85" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pm10_mass" />
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    <attribute name="ebas_matrix" value="pm10" />
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    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_submitter" value="&quot;Ahonen, Lauri, lauri.r.ahonen@helsinki.fi, University of Helsinki, UHEL, Institute of Atmospheric and Earth System Research INAR, Gustaf Hällströmin katu 2a, , FIN-00560, Helsinki, Finland&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 framework: GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Instrument installed and operated according to manual" />
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  <variable name="qc_pm10_mass_prec1587" shape="qc_pm10_mass_prec1587_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
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  </variable>
  <variable name="meta_pm10_mass_prec1587" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_pm10_ambient_aerosol_particles_in_air" />
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    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_matrix" value="pm10" />
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    <attribute name="ebas_comment" value="Instrument installed and operated according to manual" />
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  <variable name="meta_pm10_mass_perc8413" shape="metadata_time" type="String">
    <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="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
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    <attribute name="long_name" value="time of ebas metadata intervals" />
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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="_CoordinateAxisType" value="Time" />
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