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  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Particle_number_concentration at Pallas (Sammaltunturi)" />
  <attribute name="summary" value="Particle_number_concentration at Pallas (Sammaltunturi). 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', 'particle_number_concentration in aerosol (number_concentration_of_particles_in_dry_aerosol_particles_in_air)']" />
  <attribute name="keywords" value="&quot;Pallas (Sammaltunturi)&quot; FI0096G particle_number_concentration aerosol ACTRIS GAW-WDCA relative_humidity number_concentration_of_particles_in_dry_aerosol_particles_in_air" />
  <attribute name="id" value="77FR-S8WE.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/10.48597/77FR-S8WE" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Asmi, E., ACTRIS, GAW-WDCA, 2026, Particle_number_concentration at Pallas (Sammaltunturi), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/77FR-S8WE" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="FI01L &quot;Finnish Meteorological Institute&quot; FMI/IKO &quot;Atmospheric Composition Unit (IKO)&quot; &quot;Erik Palménin aukio&quot; FI-00560 Helsinki Finland" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2026-04-22T14:46:41.334880Z" />
  <attribute name="date_metadata_modified" value="2026-04-09T19:55:23Z" />
  <attribute name="creator_name" value="Eija Asmi" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="eija.asmi@fmi.fi" />
  <attribute name="creator_institution" value="&quot;Finnish Meteorological Institute, FMI&quot;" />
  <attribute name="contributor_name" value="Krista Luoma" />
  <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 ((24.11583 67.97361 560), (24.116111111 67.973333333 560))" />
  <attribute name="geospatial_lat_min" type="double" value="67.973333333" />
  <attribute name="geospatial_lat_max" type="double" value="67.97361" />
  <attribute name="geospatial_lon_min" type="double" value="24.11583" />
  <attribute name="geospatial_lon_max" type="double" value="24.116111111" />
  <attribute name="geospatial_vertical_min" type="double" value="560.0" />
  <attribute name="geospatial_vertical_max" type="double" value="560.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="time_coverage_start" value="2024-01-29T11:00:00Z" />
  <attribute name="time_coverage_end" value="2026-02-25T16:00:00Z" />
  <attribute name="time_coverage_duration" value="P0002-00-27T05:00:00" />
  <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="Asmi, E., ACTRIS, GAW-WDCA, 2026, Particle_number_concentration at Pallas (Sammaltunturi), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/77FR-S8WE" />
  <attribute name="ebas_set_type_code" value="TU" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="77FR-S8WE.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/77FR-S8WE" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/77FR-S8WE" />
  <attribute name="ebas_file_creation" value="2026-05-22T05:00:24.060770Z" />
  <attribute name="ebas_export_state" value="2026-04-22T14:46:41.334880Z" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="2024-01-29T11:00:00.000000Z" />
  <attribute name="ebas_revision_date" value="2026-04-09T19:55:23.000000Z" />
  <attribute name="ebas_version" value="0" />
  <attribute name="ebas_version_description" value="initial submission" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="25mo" />
  <attribute name="ebas_resolution_code" value="1h" />
  <attribute name="ebas_sample_duration" value="1h" />
  <attribute name="ebas_orig_time_res" value="1mn" />
  <attribute name="ebas_station_code" value="FI0096G" />
  <attribute name="ebas_platform_code" value="FI0096S" />
  <attribute name="ebas_station_name" value="Pallas (Sammaltunturi)" />
  <attribute name="ebas_station_wdca_id" value="GAWAFI__PAL" />
  <attribute name="ebas_station_gaw_id" value="PAL" />
  <attribute name="ebas_station_gaw_name" value="Pallas" />
  <attribute name="ebas_station_other_ids" value="FIPALL (SYLVA)" />
  <attribute name="ebas_station_land_use" value="Forest" />
  <attribute name="ebas_station_setting" value="Rural" />
  <attribute name="ebas_station_gaw_type" value="G" />
  <attribute name="ebas_station_wmo_region" type="long" value="6" />
  <attribute name="ebas_station_latitude" type="double" value="67.973333333" />
  <attribute name="ebas_station_longitude" type="double" value="24.116111111" />
  <attribute name="ebas_station_altitude" value="565.0 m" />
  <attribute name="ebas_measurement_latitude" type="double" value="67.97361" />
  <attribute name="ebas_measurement_longitude" type="double" value="24.11583" />
  <attribute name="ebas_measurement_altitude" value="560.0 m" />
  <attribute name="ebas_measurement_height" value="7.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_laboratory_code" value="FI01L" />
  <attribute name="ebas_instrument_type" value="cpc" />
  <attribute name="ebas_instrument_name" value="CPC3750_PAL" />
  <attribute name="ebas_instrument_manufacturer" value="TSI" />
  <attribute name="ebas_instrument_model" value="3750" />
  <attribute name="ebas_instrument_serial_number" value="3750183704" />
  <attribute name="ebas_method_ref" value="FI01L_CPC3750_v0" />
  <attribute name="ebas_standard_method" value="None" />
  <attribute name="ebas_inlet_type" value="Impactor--direct" />
  <attribute name="ebas_inlet_description" value="Total air heated inlet" />
  <attribute name="ebas_flow_rate" value="1.0 l/min" />
  <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
  <attribute name="ebas_humidity_temperaure_control_description" value="Permapure Monotube Dryer MD-700-24S" />
  <attribute name="ebas_volume_std_temperature" value="instrument internal" />
  <attribute name="ebas_volume_std_pressure" value="instrument internal" />
  <attribute name="ebas_measurement_uncertainty" value="5.0 %" />
  <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 negative values may appear due to statistical variations at very low concentrations" />
  <attribute name="ebas_organization" value="FI01L, Finnish Meteorological Institute, FMI/IKO, Atmospheric Composition Unit (IKO), Erik Palménin aukio, , FI-00560, Helsinki, Finland" />
  <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;Asmi, Eija, eija.asmi@fmi.fi, Finnish Meteorological Institute, FMI, , Erik Palmenin aukio 1, , FI-00560, Helsinki, Finland&quot;" />
  <attribute name="ebas_submitter" value="&quot;Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, &quot;&quot;Division of Atmospheric Sciences, Department of Physics&quot;&quot;, PO BOX 64, , FI-00014, University of 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 frameworks: ACTRIS, GAW-WDCA. Request acknowledgment details from data originator" />
  <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="18197" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="1" />
  <dimension name="d_Location_d0" length="1" />
  <dimension name="qc_pressure_flags" length="1" />
  <dimension name="d_Location_d1" length="1" />
  <dimension name="qc_relative_humidity_flags" length="1" />
  <dimension name="qc_temperature_flags" length="1" />
  <dimension name="qc_particle_number_concentration_amean_flags" length="1" />
  <dimension name="qc_particle_number_concentration_prec1587_flags" length="1" />
  <dimension name="qc_particle_number_concentration_perc8413_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2024-01-29T11:30:00Z" />
    <attribute name="time_coverage_end" value="2026-02-25T15:30:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="3600.0" />
    <attribute name="time_coverage_duration" value="P0Y0M758DT4H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-06-05" />
    <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="2026-04-09T19:55:23.000000Z" />
    <attribute name="ebas_version" value="0" />
    <attribute name="ebas_version_description" value="initial submission" />
    <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="1mn" />
    <attribute name="ebas_station_code" value="FI0096G" />
    <attribute name="ebas_platform_code" value="FI0096S" />
    <attribute name="ebas_station_name" value="Pallas (Sammaltunturi)" />
    <attribute name="ebas_station_wdca_id" value="GAWAFI__PAL" />
    <attribute name="ebas_station_gaw_id" value="PAL" />
    <attribute name="ebas_station_gaw_name" value="Pallas" />
    <attribute name="ebas_station_other_ids" value="FIPALL (SYLVA)" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="67.973333333" />
    <attribute name="ebas_station_longitude" type="double" value="24.116111111" />
    <attribute name="ebas_station_altitude" value="565.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="67.97361" />
    <attribute name="ebas_measurement_longitude" type="double" value="24.11583" />
    <attribute name="ebas_measurement_altitude" value="560.0 m" />
    <attribute name="ebas_measurement_height" value="7.0 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="FI01L" />
    <attribute name="ebas_instrument_type" value="cpc" />
    <attribute name="ebas_instrument_name" value="CPC3750_PAL" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3750" />
    <attribute name="ebas_instrument_serial_number" value="3750183704" />
    <attribute name="ebas_method_ref" value="FI01L_CPC3750_v0" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Total air heated inlet" />
    <attribute name="ebas_flow_rate" value="1.0 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Permapure Monotube Dryer MD-700-24S" />
    <attribute name="ebas_volume_std_temperature" value="instrument internal" />
    <attribute name="ebas_volume_std_pressure" value="instrument internal" />
    <attribute name="ebas_measurement_uncertainty" value="5.0 %" />
    <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 negative values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FI01L, Finnish Meteorological Institute, FMI/IKO, Atmospheric Composition Unit (IKO), Erik Palménin aukio, , FI-00560, Helsinki, Finland" />
    <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;Asmi, Eija, eija.asmi@fmi.fi, Finnish Meteorological Institute, FMI, , Erik Palmenin aukio 1, , FI-00560, Helsinki, Finland&quot;" />
    <attribute name="ebas_submitter" value="&quot;Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, &quot;&quot;Division of Atmospheric Sciences, Department of Physics&quot;&quot;, PO BOX 64, , FI-00014, University of 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 frameworks: ACTRIS, GAW-WDCA. Request acknowledgment details from data originator" />
  </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="2026-04-09T19:55:23.000000Z" />
    <attribute name="ebas_version" value="0" />
    <attribute name="ebas_version_description" value="initial submission" />
    <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="1mn" />
    <attribute name="ebas_station_code" value="FI0096G" />
    <attribute name="ebas_platform_code" value="FI0096S" />
    <attribute name="ebas_station_name" value="Pallas (Sammaltunturi)" />
    <attribute name="ebas_station_wdca_id" value="GAWAFI__PAL" />
    <attribute name="ebas_station_gaw_id" value="PAL" />
    <attribute name="ebas_station_gaw_name" value="Pallas" />
    <attribute name="ebas_station_other_ids" value="FIPALL (SYLVA)" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="67.973333333" />
    <attribute name="ebas_station_longitude" type="double" value="24.116111111" />
    <attribute name="ebas_station_altitude" value="565.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="67.97361" />
    <attribute name="ebas_measurement_longitude" type="double" value="24.11583" />
    <attribute name="ebas_measurement_altitude" value="560.0 m" />
    <attribute name="ebas_measurement_height" value="7.0 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="FI01L" />
    <attribute name="ebas_instrument_type" value="cpc" />
    <attribute name="ebas_instrument_name" value="CPC3750_PAL" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3750" />
    <attribute name="ebas_instrument_serial_number" value="3750183704" />
    <attribute name="ebas_method_ref" value="FI01L_CPC3750_v0" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Total air heated inlet" />
    <attribute name="ebas_flow_rate" value="1.0 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Permapure Monotube Dryer MD-700-24S" />
    <attribute name="ebas_volume_std_temperature" value="instrument internal" />
    <attribute name="ebas_volume_std_pressure" value="instrument internal" />
    <attribute name="ebas_measurement_uncertainty" value="5.0 %" />
    <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 negative values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FI01L, Finnish Meteorological Institute, FMI/IKO, Atmospheric Composition Unit (IKO), Erik Palménin aukio, , FI-00560, Helsinki, Finland" />
    <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;Asmi, Eija, eija.asmi@fmi.fi, Finnish Meteorological Institute, FMI, , Erik Palmenin aukio 1, , FI-00560, Helsinki, Finland&quot;" />
    <attribute name="ebas_submitter" value="&quot;Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, &quot;&quot;Division of Atmospheric Sciences, Department of Physics&quot;&quot;, PO BOX 64, , FI-00014, University of 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 frameworks: ACTRIS, GAW-WDCA. Request acknowledgment details from data originator" />
  </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="2026-04-09T19:55:23.000000Z" />
    <attribute name="ebas_version" value="0" />
    <attribute name="ebas_version_description" value="initial submission" />
    <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="1mn" />
    <attribute name="ebas_station_code" value="FI0096G" />
    <attribute name="ebas_platform_code" value="FI0096S" />
    <attribute name="ebas_station_name" value="Pallas (Sammaltunturi)" />
    <attribute name="ebas_station_wdca_id" value="GAWAFI__PAL" />
    <attribute name="ebas_station_gaw_id" value="PAL" />
    <attribute name="ebas_station_gaw_name" value="Pallas" />
    <attribute name="ebas_station_other_ids" value="FIPALL (SYLVA)" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="67.973333333" />
    <attribute name="ebas_station_longitude" type="double" value="24.116111111" />
    <attribute name="ebas_station_altitude" value="565.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="67.97361" />
    <attribute name="ebas_measurement_longitude" type="double" value="24.11583" />
    <attribute name="ebas_measurement_altitude" value="560.0 m" />
    <attribute name="ebas_measurement_height" value="7.0 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="FI01L" />
    <attribute name="ebas_instrument_type" value="cpc" />
    <attribute name="ebas_instrument_name" value="CPC3750_PAL" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
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    <attribute name="ebas_instrument_serial_number" value="3750183704" />
    <attribute name="ebas_method_ref" value="FI01L_CPC3750_v0" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Total air heated inlet" />
    <attribute name="ebas_flow_rate" value="1.0 l/min" />
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    <attribute name="ebas_volume_std_temperature" value="instrument internal" />
    <attribute name="ebas_volume_std_pressure" value="instrument internal" />
    <attribute name="ebas_measurement_uncertainty" value="5.0 %" />
    <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 negative values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FI01L, Finnish Meteorological Institute, FMI/IKO, Atmospheric Composition Unit (IKO), Erik Palménin aukio, , FI-00560, Helsinki, Finland" />
    <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;Asmi, Eija, eija.asmi@fmi.fi, Finnish Meteorological Institute, FMI, , Erik Palmenin aukio 1, , FI-00560, Helsinki, Finland&quot;" />
    <attribute name="ebas_submitter" value="&quot;Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, &quot;&quot;Division of Atmospheric Sciences, Department of Physics&quot;&quot;, PO BOX 64, , FI-00014, University of 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 frameworks: ACTRIS, GAW-WDCA. Request acknowledgment details from data originator" />
  </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_particle_number_concentration_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="number_concentration_of_particles_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/cm3" />
    <attribute name="ancillary_variables" value="qc_particle_number_concentration_amean meta_particle_number_concentration_amean" />
    <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="2026-04-09T19:55:23.000000Z" />
    <attribute name="ebas_version" value="0" />
    <attribute name="ebas_version_description" value="initial submission" />
    <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="1mn" />
    <attribute name="ebas_station_code" value="FI0096G" />
    <attribute name="ebas_platform_code" value="FI0096S" />
    <attribute name="ebas_station_name" value="Pallas (Sammaltunturi)" />
    <attribute name="ebas_station_wdca_id" value="GAWAFI__PAL" />
    <attribute name="ebas_station_gaw_id" value="PAL" />
    <attribute name="ebas_station_gaw_name" value="Pallas" />
    <attribute name="ebas_station_other_ids" value="FIPALL (SYLVA)" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" type="long" value="6" />
    <attribute name="ebas_station_latitude" type="double" value="67.973333333" />
    <attribute name="ebas_station_longitude" type="double" value="24.116111111" />
    <attribute name="ebas_station_altitude" value="565.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="67.97361" />
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    <attribute name="ebas_measurement_height" value="7.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="particle_number_concentration" />
    <attribute name="ebas_unit" value="1/cm3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="FI01L" />
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    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Total air heated inlet" />
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    <attribute name="ebas_zero_negative_values" value="Zero and negative values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgment details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlenumberconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle number concentration" />
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    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_particle_number_concentration_amean" shape="qc_particle_number_concentration_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <variable name="v_particle_number_concentration_prec1587" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="number_concentration_of_particles_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_version_description" value="initial submission" />
    <attribute name="ebas_statistics" value="percentile:15.87" />
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    <attribute name="ebas_orig_time_res" value="1mn" />
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    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA. Request acknowledgment details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlenumberconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle number concentration" />
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    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
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    <attribute name="actris_framework_preferred_term" value="ACTRIS, GAW-WDCA" />
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    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_particle_number_concentration_prec1587" shape="qc_particle_number_concentration_prec1587_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="meta_particle_number_concentration_prec1587" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_particle_number_concentration_perc8413" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="number_concentration_of_particles_in_dry_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/cm3" />
    <attribute name="ancillary_variables" value="qc_particle_number_concentration_perc8413 meta_particle_number_concentration_perc8413" />
    <attribute name="cell_methods" value="time: percentile:84.13" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_version_description" value="initial submission" />
    <attribute name="ebas_statistics" value="percentile:84.13" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="FI0096G" />
    <attribute name="ebas_platform_code" value="FI0096S" />
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    <attribute name="ebas_station_gaw_id" value="PAL" />
    <attribute name="ebas_station_gaw_name" value="Pallas" />
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    <attribute name="ebas_station_gaw_type" value="G" />
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    <attribute name="ebas_station_latitude" type="double" value="67.973333333" />
    <attribute name="ebas_station_longitude" type="double" value="24.116111111" />
    <attribute name="ebas_station_altitude" value="565.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="67.97361" />
    <attribute name="ebas_measurement_longitude" type="double" value="24.11583" />
    <attribute name="ebas_measurement_altitude" value="560.0 m" />
    <attribute name="ebas_measurement_height" value="7.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="particle_number_concentration" />
    <attribute name="ebas_unit" value="1/cm3" />
    <attribute name="ebas_matrix" value="aerosol" />
    <attribute name="ebas_laboratory_code" value="FI01L" />
    <attribute name="ebas_instrument_type" value="cpc" />
    <attribute name="ebas_instrument_name" value="CPC3750_PAL" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3750" />
    <attribute name="ebas_instrument_serial_number" value="3750183704" />
    <attribute name="ebas_method_ref" value="FI01L_CPC3750_v0" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Total air heated inlet" />
    <attribute name="ebas_flow_rate" value="1.0 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Permapure Monotube Dryer MD-700-24S" />
    <attribute name="ebas_volume_std_temperature" value="instrument internal" />
    <attribute name="ebas_volume_std_pressure" value="instrument internal" />
    <attribute name="ebas_detection_limit" value="0.001 1/cm3" />
    <attribute name="ebas_detection_limit_expl" value="Determined only by instrument counting statistics, no detection limit flag used" />
    <attribute name="ebas_measurement_uncertainty" value="5.0 %" />
    <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 negative values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FI01L, Finnish Meteorological Institute, FMI/IKO, Atmospheric Composition Unit (IKO), Erik Palménin aukio, , FI-00560, Helsinki, Finland" />
    <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;Asmi, Eija, eija.asmi@fmi.fi, Finnish Meteorological Institute, FMI, , Erik Palmenin aukio 1, , FI-00560, Helsinki, Finland&quot;" />
    <attribute name="ebas_submitter" value="&quot;Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, &quot;&quot;Division of Atmospheric Sciences, Department of Physics&quot;&quot;, PO BOX 64, , FI-00014, University of 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 frameworks: ACTRIS, GAW-WDCA. Request acknowledgment details from data originator" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlenumberconcentration" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle number concentration" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
    <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/condensationparticlecounter" />
    <attribute name="actris_instrument_type_preferred_term" value="condensation particle counter" />
    <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="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_particle_number_concentration_perc8413" shape="qc_particle_number_concentration_perc8413_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_particle_number_concentration_perc8413" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01T00:00:00Z" />
    <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" />
</netcdf>
