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  <attribute name="title" value="Ground based in situ observations of particle_number_size_distribution at Mülheim-Styrum (DE0069B) using smps" />
  <attribute name="keywords" value="DE0069B, Mülheim-Styrum, particle_number_size_distribution, pm1, GUAN" />
  <attribute name="id" value="WQ7A-T9JU.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="GUAN" />
  <attribute name="acknowledgement" value="Request acknowledgment details from data originator" />
  <attribute name="doi" value="https://doi.org/10.48597/WQ7A-T9JU" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Christof Asbach, Stephan Leinert, particle_number_size_distribution - smps at Mülheim-Styrum, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/WQ7A-T9JU" />
  <attribute name="summary" value="Ground based in situ observations of particle_number_size_distribution at Mülheim-Styrum (DE0069B) using smps. These measurements are gathered as a part of the following projects GUAN and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: particle_number_size_distribution in pm1, particle_number_size_distribution in pm1, particle_number_size_distribution in pm1" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="DE47L, Institut für Energie- und Umwelttechnik e.V., IUTA, Bliersheimer Str. 60, 47229, Duisburg, Germany" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2019-01-01T00:00:00 UTC" />
  <attribute name="date_metadata_modified" value="2019-01-01T00:00:00 UTC" />
  <attribute name="creator_name" value="Christof Asbach, Stephan Leinert" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="asbach@iuta.de, stephan.leinert@lanuv.nrw.de" />
  <attribute name="creator_institution" value="&quot;Institut fuer Energie- und Umwelttechnik e. V., www.iuta.de, IUTA&quot;, &quot;Landesamt fuer Natur, Umwelt und Verbraucherschutz Nordrhein-Westfalen, www.lanuv.nrw.de, LANUV-NRW&quot;" />
  <attribute name="contributor_name" value="Heinz Kaminski" />
  <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" />
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  <attribute name="publisher_url" value="https://www.nilu.no/" />
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  <attribute name="ebas_orig_time_res" value="5mn" />
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  <attribute name="ebas_station_setting" value="Suburban" />
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  <attribute name="ebas_station_longitude" value="6.86505" />
  <attribute name="ebas_station_altitude" value="39.0 m" />
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  <attribute name="ebas_measurement_altitude" value="40.0 m" />
  <attribute name="ebas_measurement_height" value="3.5 m" />
  <attribute name="ebas_regime" value="IMG" />
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  <attribute name="ebas_unit" value="1/cm3" />
  <attribute name="ebas_matrix" value="pm1" />
  <attribute name="ebas_laboratory_code" value="DE47L" />
  <attribute name="ebas_instrument_type" value="smps" />
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  <attribute name="ebas_instrument_model" value="3936" />
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  <attribute name="ebas_humidity_temperaure_control_description" value="Humidity/temperature control description: sample dried to below 40% RH with nafion dryer" />
  <attribute name="ebas_volume_std_temperature" value="273.15 K" />
  <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
  <attribute name="ebas_detection_limit" value="0.0 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="10.0 %" />
  <attribute name="ebas_measurement_uncertainty_expl" value="uncertainty range between instruments in intercomparison by Wiedensohler et al. 2012. (AMT)" />
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  <attribute name="ebas_framework_acronym" value="GUAN" />
  <attribute name="ebas_framework_name" value="German Ultrafine Aerosol Networ" />
  <attribute name="ebas_framework_description" value="GUAN is a joint observation network, which aims to improve our understanding of atmospheric aerosol particles with regard to human particle exposure and aerosol climate effects." />
  <attribute name="ebas_framework_contact_name" value="Ann Mari Fjaeraa" />
  <attribute name="ebas_framework_contact_email" value="amf@nilu.no" />
  <attribute name="ebas_originator" value="Leinert, Stephan, stephan.leinert@lanuv.nrw.de, &quot;Landesamt fuer Natur, Umwelt und Verbraucherschutz Nordrhein-Westfalen&quot;, LANUV-NRW, www.lanuv.nrw.de, Leibnizstr. 10, , 45659, Recklinghausen, Germany" />
  <attribute name="ebas_submitter" value="Kaminski, Heinz, kaminski@iuta.de, Institut fuer Energie- und Umwelttechnik e. V., IUTA, www.iuta.de, Bliersheimer Str. 58-60, , 47229, Duisburg, Germany" />
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(AMT)&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;DE47L, Institut für Energie- und Umwelttechnik e.V., IUTA, , Bliersheimer Str. 60, , 47229, Duisburg, Germany&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;GUAN&quot;,&#xA;    &quot;Framework name&quot;: &quot;German Ultrafine Aerosol Networ&quot;,&#xA;    &quot;Framework description&quot;: &quot;GUAN is a joint observation network, which aims to improve our understanding of atmospheric aerosol particles with regard to human particle exposure and aerosol climate effects.&quot;,&#xA;    &quot;Framework contact name&quot;: &quot;Ann Mari Fjaeraa&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;amf@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Leinert, Stephan, stephan.leinert@lanuv.nrw.de, \&quot;Landesamt fuer Natur, Umwelt und Verbraucherschutz Nordrhein-Westfalen\&quot;, LANUV-NRW, www.lanuv.nrw.de, Leibnizstr. 10, , 45659, Recklinghausen, Germany&quot;,&#xA;    &quot;Submitter&quot;: &quot;Kaminski, Heinz, kaminski@iuta.de, Institut fuer Energie- und Umwelttechnik e. V., IUTA, www.iuta.de, Bliersheimer Str. 58-60, , 47229, Duisburg, Germany&quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;Request acknowledgment details from data originator&quot;,&#xA;    &quot;Comment&quot;: &quot;none&quot;&#xA;}" />
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    <attribute name="ebas_station_latitude" value="51.453459" />
    <attribute name="ebas_station_longitude" value="6.86505" />
    <attribute name="ebas_station_altitude" value="39.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="51.453459" />
    <attribute name="ebas_measurement_longitude" value="6.86506" />
    <attribute name="ebas_measurement_altitude" value="40.0 m" />
    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="particle_number_size_distribution" />
    <attribute name="ebas_unit" value="1/cm3" />
    <attribute name="ebas_matrix" value="pm1" />
    <attribute name="ebas_laboratory_code" value="DE47L" />
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    <attribute name="ebas_instrument_name" value="IUTA-SMPS" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3936" />
    <attribute name="ebas_instrument_serial_number" value="0815" />
    <attribute name="ebas_method_ref" value="DE47L_IUTA_SOP_WPM_05" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="Downward-facing tube, stainless steel" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Humidity/temperature control description: sample dried to below 40% RH with nafion dryer" />
    <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_detection_limit_expl" value="Determined only by instrument counting statistics, no detection limit flag used" />
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    <attribute name="ebas_zero_negative_values_code" value="Zero possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_acronym" value="GUAN" />
    <attribute name="ebas_framework_name" value="German Ultrafine Aerosol Networ" />
    <attribute name="ebas_framework_description" value="GUAN is a joint observation network, which aims to improve our understanding of atmospheric aerosol particles with regard to human particle exposure and aerosol climate effects." />
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    <attribute name="ebas_acknowledgement" value="Request acknowledgment details from data originator" />
    <attribute name="ebas_comment" value="none" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="particle_number_size_distribution_perc8413" shape="D time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/cm3" />
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    <attribute name="cell_methods" value="time: percentile:84.13" />
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    <attribute name="ebas_version_description" value="initiol revision, SMPS_control_lev0 v.0.0_2" />
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    <attribute name="ebas_platform_code" value="DE0069S" />
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    <attribute name="ebas_measurement_height" value="3.5 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="particle_number_size_distribution" />
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    <attribute name="ebas_matrix" value="pm1" />
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    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_acknowledgement" value="Request acknowledgment details from data originator" />
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  <variable name="particle_number_size_distribution_perc8413_qc" shape="D particle_number_size_distribution_perc8413_qc_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="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" />
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    <attribute name="long_name" value="time of ebas metadata intervals" />
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    <attribute name="units" value="days since 1900-01-01 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" />
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  <variable name="D" shape="D" type="double" />
</netcdf>
