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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_size_distribution at Puijo Smear IV" />
  <attribute name="keywords" value="ACTRIS, Puijo Smear IV, aerosol, particle_number_size_distribution, number_concentration_of_positive_ions_in_dry_aerosol_particles_in_air, FI0063R" />
  <attribute name="id" value="FI0063R.20240301115959.20260420065457.dmps...22mo.1h.FI07L_UEF_DMPS_2.FI07L_DMPS.lev2.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="ACTRIS" />
  <attribute name="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: ACTRIS. Request acknowledgement details from data originator" />
  <attribute name="doi" value="https://doi.org/10.48597/YVBZ-SEWF" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Virtanen, A., Komppula, M., ACTRIS, 2026, Particle_number_size_distribution at Puijo Smear IV, data hosted by EBAS at NILU, Part of DOI: https://doi.org/10.48597/YVBZ-SEWF" />
  <attribute name="summary" value="Particle_number_size_distribution at Puijo Smear IV. These measurements are gathered as a part of the following projects ACTRIS and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: particle_number_size_distribution in aerosol (number_concentration_of_positive_ions_in_dry_aerosol_particles_in_air), particle_number_size_distribution in aerosol (number_concentration_of_positive_ions_in_dry_aerosol_particles_in_air), particle_number_size_distribution in aerosol (number_concentration_of_positive_ions_in_dry_aerosol_particles_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="FI07L, University of Eastern Finland, UEF, Department of Technical Physics, Aerosol Physics research group, Yliopistonranta 8, , 70211, Kuopio, Finland" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2026-04-20T06:54:57 UTC" />
  <attribute name="date_metadata_modified" value="2026-04-20T06:54:57 UTC" />
  <attribute name="creator_name" value="Annele Virtanen, Mika Komppula" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="annele.virtanen@uef.fi, mika.komppula@fmi.fi" />
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  <attribute name="contributor_name" value="Arttu Ylisirniö, Ari Leskinen, Pasi Miettinen" />
  <attribute name="contributor_role" value="data submitter, 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" />
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  <attribute name="time_coverage_start" value="2024-03-01T11:59:59 UTC" />
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  <attribute name="time_coverage_duration" value="P0001-09-30T12:00:00.400000" />
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  <attribute name="ebas_station_altitude" value="306.0 m" />
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  <attribute name="ebas_inlet_type" value="Isokinetic" />
  <attribute name="ebas_inlet_description" value="Total air inlet, custom made, total flow 55 l/min with isokinetic subsamplers" />
  <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
  <attribute name="ebas_humidity_temperaure_control_description" value="aerosol flow dried to below 40% RH" />
  <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_framework_acronym" value="ACTRIS" />
  <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases" />
  <attribute name="ebas_framework_description" value="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." />
  <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre" />
  <attribute name="ebas_framework_contact_email" value="clm@nilu.no" />
  <attribute name="ebas_originator" value="Komppula, Mika, mika.komppula@fmi.fi, Finnish Meteorological Institute, FMI, Atmospheric Research Centre of Eastern Finland, Melania building, Yliopistonranta 8, 70211, Kuopio, Finland" />
  <attribute name="ebas_submitter" value="Miettinen, Pasi, pasi.miettinen@uef.fi, University of Eastern Finland, UEF, Department of Technical Physics, Melania building, Yliopistonranta 8, 70211, Kuopio, Finland" />
  <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: ACTRIS. Request acknowledgement details from data originator" />
  <attribute name="ebas_comment" value="None" />
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  <attribute name="Metadata_Conventions" value="Unidata Dataset Discovery v1.0" />
  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
  <attribute name="comment" value="{&#xA;    &quot;Data definition&quot;: &quot;EBAS_1.1&quot;,&#xA;    &quot;Data license&quot;: &quot;https://creativecommons.org/licenses/by/4.0/&quot;,&#xA;    &quot;Citation&quot;: &quot;Virtanen, A., Komppula, M., ACTRIS, 2026, Particle_number_size_distribution at Puijo Smear IV, data hosted by EBAS at NILU, Part of DOI: https://doi.org/10.48597/YVBZ-SEWF&quot;,&#xA;    &quot;Set type code&quot;: &quot;TI&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;FI0063R.20240301115959.20260420065457.dmps...22mo.1h.FI07L_UEF_DMPS_2.FI07L_DMPS.lev2.nc&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/YVBZ-SEWF&quot;,&#xA;    &quot;File creation&quot;: &quot;2026-04-20T09:19:01.975729 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2026-04-20T08:43:02.776965 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20240301115959&quot;,&#xA;    &quot;Revision date&quot;: &quot;20260420065457&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;initial revision&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;22mo&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1h&quot;,&#xA;    &quot;Sample duration&quot;: &quot;1h&quot;,&#xA;    &quot;Orig. time res.&quot;: &quot;6mn&quot;,&#xA;    &quot;Station code&quot;: &quot;FI0063R&quot;,&#xA;    &quot;Platform code&quot;: &quot;FI0063S&quot;,&#xA;    &quot;Station name&quot;: &quot;Puijo Smear IV&quot;,&#xA;    &quot;Station GAW-ID&quot;: &quot;N/A&quot;,&#xA;    &quot;Station other IDs&quot;: &quot;0-246-0-PUI (WIGOS), PUI (ICOS)&quot;,&#xA;    &quot;Station land use&quot;: &quot;Forest&quot;,&#xA;    &quot;Station setting&quot;: &quot;Suburban&quot;,&#xA;    &quot;Station latitude&quot;: &quot;62.908889&quot;,&#xA;    &quot;Station longitude&quot;: &quot;27.658611&quot;,&#xA;    &quot;Station altitude&quot;: &quot;306.0 m&quot;,&#xA;    &quot;Measurement height&quot;: &quot;4.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;FI07L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;dmps&quot;,&#xA;    &quot;Instrument name&quot;: &quot;UEF_DMPS_2&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;UEF&quot;,&#xA;    &quot;Instrument model&quot;: &quot;UEF_DMPS_2&quot;,&#xA;    &quot;Instrument serial number&quot;: &quot;UEF_DMPS_2&quot;,&#xA;    &quot;Method ref&quot;: &quot;FI07L_DMPS&quot;,&#xA;    &quot;Standard method&quot;: &quot;SOP=Wiedensohler2012&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Isokinetic&quot;,&#xA;    &quot;Inlet description&quot;: &quot;Total air inlet, custom made, total flow 55 l/min with isokinetic subsamplers&quot;,&#xA;    &quot;Humidity/temperature control&quot;: &quot;Nafion dryer&quot;,&#xA;    &quot;Humidity/temperature control description&quot;: &quot;aerosol flow dried to below 40% RH&quot;,&#xA;    &quot;Volume std. temperature&quot;: &quot;273.15 K&quot;,&#xA;    &quot;Volume std. pressure&quot;: &quot;1013.25 hPa&quot;,&#xA;    &quot;Measurement uncertainty expl.&quot;: &quot;uncertainty range between instruments in intercomparison by Wiedensohler et al. 2012.&quot;,&#xA;    &quot;Zero/negative values code&quot;: &quot;Zero possible&quot;,&#xA;    &quot;Zero/negative values&quot;: &quot;Zero values may appear due to statistical variations at very low concentrations&quot;,&#xA;    &quot;Organization&quot;: &quot;FI07L, University of Eastern Finland, UEF, \&quot;Department of Technical Physics, Aerosol Physics research group\&quot;, Yliopistonranta 8, , 70211, Kuopio, Finland&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;ACTRIS&quot;,&#xA;    &quot;Framework name&quot;: &quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;,&#xA;    &quot;Framework description&quot;: &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;,&#xA;    &quot;Framework contact name&quot;: &quot;Cathrine Lund Myhre&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;clm@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Komppula, Mika, mika.komppula@fmi.fi, Finnish Meteorological Institute, FMI, Atmospheric Research Centre of Eastern Finland, Melania building, Yliopistonranta 8, 70211, Kuopio, Finland&quot;,&#xA;    &quot;Submitter&quot;: &quot;Miettinen, Pasi, pasi.miettinen@uef.fi, University of Eastern Finland, UEF, Department of Technical Physics, Melania building, Yliopistonranta 8, 70211, Kuopio, Finland&quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;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: ACTRIS. Request acknowledgement details from data originator&quot;,&#xA;    &quot;Comment&quot;: &quot;None&quot;&#xA;}" />
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  <dimension name="temperature_qc_flags" length="1" />
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  <dimension name="particle_number_size_distribution_amean_qc_flags" length="1" />
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    <attribute name="ebas_station_longitude" value="27.658611" />
    <attribute name="ebas_station_altitude" value="306.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 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="FI07L" />
    <attribute name="ebas_instrument_type" value="dmps" />
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    <attribute name="ebas_instrument_manufacturer" value="UEF" />
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    <attribute name="ebas_inlet_description" value="Total air inlet, custom made, total flow 55 l/min with isokinetic subsamplers" />
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    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="FI07L, University of Eastern Finland, UEF, &quot;Department of Technical Physics, Aerosol Physics research group&quot;, Yliopistonranta 8, , 70211, Kuopio, Finland" />
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    <attribute name="ebas_originator" value="Komppula, Mika, mika.komppula@fmi.fi, Finnish Meteorological Institute, FMI, Atmospheric Research Centre of Eastern Finland, Melania building, Yliopistonranta 8, 70211, Kuopio, Finland" />
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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 framework: ACTRIS. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="temperature" shape="Location time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="K" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_version_description" value="initial revision" />
    <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="6mn" />
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    <attribute name="ebas_platform_code" value="FI0063S" />
    <attribute name="ebas_station_name" value="Puijo Smear IV" />
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    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_latitude" value="62.908889" />
    <attribute name="ebas_station_longitude" value="27.658611" />
    <attribute name="ebas_station_altitude" value="306.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_laboratory_code" value="FI07L" />
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    <attribute name="ebas_instrument_manufacturer" value="UEF" />
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    <attribute name="ebas_originator" value="Komppula, Mika, mika.komppula@fmi.fi, Finnish Meteorological Institute, FMI, Atmospheric Research Centre of Eastern Finland, Melania building, Yliopistonranta 8, 70211, Kuopio, Finland" />
    <attribute name="ebas_submitter" value="Miettinen, Pasi, pasi.miettinen@uef.fi, University of Eastern Finland, UEF, Department of Technical Physics, Melania building, Yliopistonranta 8, 70211, Kuopio, Finland" />
    <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: ACTRIS. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="temperature_qc" shape="Location temperature_qc_flags time" type="int">
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="ebas_platform_code" value="FI0063S" />
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    <attribute name="ebas_station_latitude" value="62.908889" />
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    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="particle_number_size_distribution_amean_qc" shape="D particle_number_size_distribution_amean_qc_flags time" type="int">
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    <attribute name="ebas_comment" value="None" />
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  <variable name="particle_number_size_distribution_prec1587_qc" shape="D particle_number_size_distribution_prec1587_qc_flags time" type="int">
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    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no" />
    <attribute name="ebas_originator" value="Komppula, Mika, mika.komppula@fmi.fi, Finnish Meteorological Institute, FMI, Atmospheric Research Centre of Eastern Finland, Melania building, Yliopistonranta 8, 70211, Kuopio, Finland" />
    <attribute name="ebas_submitter" value="Miettinen, Pasi, pasi.miettinen@uef.fi, University of Eastern Finland, UEF, Department of Technical Physics, Melania building, Yliopistonranta 8, 70211, Kuopio, Finland" />
    <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: ACTRIS. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="particle_number_size_distribution_perc8413_qc" shape="D particle_number_size_distribution_perc8413_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="particle_number_size_distribution_perc8413_ebasmetadata" shape="D metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="metadata_time" shape="metadata_time" type="double">
    <attribute name="long_name" value="time of ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="Location" shape="Location" type="String" />
  <variable name="D" shape="D" type="double" />
</netcdf>
