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  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Ground based in situ observations of particle_number_concentration at Jungfraujoch (CH0001G) using cpc" />
  <attribute name="keywords" value="Jungfraujoch, particle_number_concentration, aerosol, GAW-WDCA, CH0001G, EMEP, number_concentration_of_particles_in_dry_aerosol_particles_in_air, CREATE" />
  <attribute name="id" value="GNA7-VXH4.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="CREATE, EMEP, GAW-WDCA" />
  <attribute name="acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="doi" value="https://doi.org/10.48597/GNA7-VXH4" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Urs Baltensperger, Ernest Weingartner, Urs Baltensperger, Ernest Weingartner, Urs Baltensperger, Ernest Weingartner, particle_number_concentration - cpc at Jungfraujoch, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/GNA7-VXH4" />
  <attribute name="summary" value="Ground based in situ observations of particle_number_concentration at Jungfraujoch (CH0001G) using cpc. These measurements are gathered as a part of the following projects CREATE, EMEP, GAW-WDCA and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: particle_number_concentration in aerosol (number_concentration_of_particles_in_dry_aerosol_particles_in_air), particle_number_concentration in aerosol (number_concentration_of_particles_in_dry_aerosol_particles_in_air), particle_number_concentration in aerosol (number_concentration_of_particles_in_dry_aerosol_particles_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="CH02L, Paul Scherrer Institut, PSI, Laboratory of Atmospheric Chemistry (LAC), OFLB, 5232, Villigen PSI, Switzerland" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2017-03-14T14:11:41 UTC" />
  <attribute name="date_metadata_modified" value="2017-03-14T14:11:41 UTC" />
  <attribute name="creator_name" value="Urs Baltensperger, Ernest Weingartner, Urs Baltensperger, Ernest Weingartner, Urs Baltensperger, Ernest Weingartner" />
  <attribute name="creator_type" value="person" />
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  <attribute name="contributor_name" value="Martine Collaud Coen, Martine Collaud Coen, Martine Collaud Coen" />
  <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" />
  <attribute name="publisher_url" value="https://www.nilu.no/" />
  <attribute name="geospatial_bounds" value="POINT Z (46.55 7.99 3580.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="46.55" />
  <attribute name="geospatial_lat_max" type="double" value="46.55" />
  <attribute name="geospatial_lon_min" type="double" value="7.99" />
  <attribute name="geospatial_lon_max" type="double" value="7.99" />
  <attribute name="geospatial_vertical_min" type="double" value="3580.0" />
  <attribute name="geospatial_vertical_max" type="double" value="3580.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2011-01-01T00:00:00 UTC" />
  <attribute name="time_coverage_end" value="2014-01-01T00:00:00 UTC" />
  <attribute name="time_coverage_duration" value="P0003-00-00T00:00:00" />
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  <attribute name="ebas_citation" value="Urs Baltensperger, Ernest Weingartner, Urs Baltensperger, Ernest Weingartner, Urs Baltensperger, Ernest Weingartner, particle_number_concentration - cpc at Jungfraujoch, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/GNA7-VXH4" />
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  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/GNA7-VXH4" />
  <attribute name="ebas_file_creation" value="2023-12-10T11:22:26.781621 UTC" />
  <attribute name="ebas_export_state" value="2017-03-14T13:56:17.080000 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="20110101000000" />
  <attribute name="ebas_revision_date" value="20170314141141" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="revision, SPT level 2" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="3y" />
  <attribute name="ebas_resolution_code" value="1h" />
  <attribute name="ebas_sample_duration" value="1h" />
  <attribute name="ebas_orig_time_res" value="1h" />
  <attribute name="ebas_station_code" value="CH0001G" />
  <attribute name="ebas_platform_code" value="CH0001S" />
  <attribute name="ebas_station_name" value="Jungfraujoch" />
  <attribute name="ebas_station_wdca_id" value="GAWACH__JFJ" />
  <attribute name="ebas_station_gaw_id" value="JFJ" />
  <attribute name="ebas_station_gaw_name" value="Jungfraujoch" />
  <attribute name="ebas_station_land_use" value="Gravel and stone" />
  <attribute name="ebas_station_setting" value="Mountain" />
  <attribute name="ebas_station_gaw_type" value="G" />
  <attribute name="ebas_station_wmo_region" value="6" />
  <attribute name="ebas_station_latitude" value="46.5475" />
  <attribute name="ebas_station_longitude" value="7.985" />
  <attribute name="ebas_station_altitude" value="3578.0 m" />
  <attribute name="ebas_measuremenet_latitude" value="46.55" />
  <attribute name="ebas_measurement_longitude" value="7.99" />
  <attribute name="ebas_measurement_altitude" value="3580.0 m" />
  <attribute name="ebas_measurement_height" value="2.0 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="CH02L" />
  <attribute name="ebas_instrument_type" value="cpc" />
  <attribute name="ebas_instrument_name" value="TSI_3772_JFJ_dry" />
  <attribute name="ebas_instrument_manufacturer" value="TSI" />
  <attribute name="ebas_instrument_model" value="3772" />
  <attribute name="ebas_instrument_serial_number" value="70634096" />
  <attribute name="ebas_method_ref" value="CH02L_CPC" />
  <attribute name="ebas_standard_method" value="None" />
  <attribute name="ebas_inlet_type" value="Impactor--direct" />
  <attribute name="ebas_inlet_description" value="TSP at heated inlet, Digitel, flow &gt;100 l/min" />
  <attribute name="ebas_humidity_temperaure_control" value="Other (see metadata)" />
  <attribute name="ebas_humidity_temperaure_control_description" value="Heated inlet. Sample dried to below 20% RH due to the heated inlet" />
  <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="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 possible" />
  <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
  <attribute name="ebas_organization" value="CH02L, Paul Scherrer Institut, PSI, Laboratory of Atmospheric Chemistry (LAC), OFLB, , 5232, Villigen PSI, Switzerland" />
  <attribute name="ebas_framework_acronym" value="CREATE, EMEP, GAW-WDCA" />
  <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme, World Data Centre for Aerosols" />
  <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., 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." />
  <attribute name="ebas_framework_contact_name" value="Kjetil Tørseth, Kjetil Tørseth, Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="kt@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="Weingartner, Ernest, , , , , , , , , " />
  <attribute name="ebas_submitter" value="Collaud Coen, Martine, , , , , , , , , " />
  <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="ebas_comment" value="Concentration corrected to calibrated flow, coincidence correction applied, counting efficiency calibration applied, the measurement temperature is 25°C and the measurement pressure 655 hPa." />
  <attribute name="_NCProperties" value="version=2,netcdf=4.9.0,hdf5=1.12.2" />
  <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;Urs Baltensperger, Ernest Weingartner, Urs Baltensperger, Ernest Weingartner, Urs Baltensperger, Ernest Weingartner, particle_number_concentration - cpc at Jungfraujoch, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/GNA7-VXH4&quot;,&#xA;    &quot;Set type code&quot;: &quot;TU&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;GNA7-VXH4.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/GNA7-VXH4&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/GNA7-VXH4&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-12-10T11:22:26.781621 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2017-03-14T13:56:17.080000 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20110101000000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20170314141141&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;revision, SPT level 2&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;3y&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1h&quot;,&#xA;    &quot;Sample duration&quot;: &quot;1h&quot;,&#xA;    &quot;Orig. time res.&quot;: &quot;1h&quot;,&#xA;    &quot;Station code&quot;: &quot;CH0001G&quot;,&#xA;    &quot;Platform code&quot;: &quot;CH0001S&quot;,&#xA;    &quot;Station name&quot;: &quot;Jungfraujoch&quot;,&#xA;    &quot;Station WDCA-ID&quot;: &quot;GAWACH__JFJ&quot;,&#xA;    &quot;Station GAW-ID&quot;: &quot;JFJ&quot;,&#xA;    &quot;Station GAW-Name&quot;: &quot;Jungfraujoch&quot;,&#xA;    &quot;Station land use&quot;: &quot;Gravel and stone&quot;,&#xA;    &quot;Station setting&quot;: &quot;Mountain&quot;,&#xA;    &quot;Station GAW type&quot;: &quot;G&quot;,&#xA;    &quot;Station WMO region&quot;: &quot;6&quot;,&#xA;    &quot;Station latitude&quot;: &quot;46.5475&quot;,&#xA;    &quot;Station longitude&quot;: &quot;7.985&quot;,&#xA;    &quot;Station altitude&quot;: &quot;3578.0 m&quot;,&#xA;    &quot;Measurement latitude&quot;: &quot;46.55&quot;,&#xA;    &quot;Measurement longitude&quot;: &quot;7.99&quot;,&#xA;    &quot;Measurement altitude&quot;: &quot;3580.0 m&quot;,&#xA;    &quot;Measurement height&quot;: &quot;2.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Component&quot;: &quot;particle_number_concentration&quot;,&#xA;    &quot;Unit&quot;: &quot;1/cm3&quot;,&#xA;    &quot;Matrix&quot;: &quot;aerosol&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;CH02L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;cpc&quot;,&#xA;    &quot;Instrument name&quot;: &quot;TSI_3772_JFJ_dry&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;TSI&quot;,&#xA;    &quot;Instrument model&quot;: &quot;3772&quot;,&#xA;    &quot;Instrument serial number&quot;: &quot;70634096&quot;,&#xA;    &quot;Method ref&quot;: &quot;CH02L_CPC&quot;,&#xA;    &quot;Standard method&quot;: &quot;None&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Impactor--direct&quot;,&#xA;    &quot;Inlet description&quot;: &quot;TSP at heated inlet, Digitel, flow &gt;100 l/min&quot;,&#xA;    &quot;Humidity/temperature control&quot;: &quot;Other (see metadata)&quot;,&#xA;    &quot;Humidity/temperature control description&quot;: &quot;Heated inlet. Sample dried to below 20% RH due to the heated inlet&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;Detection limit&quot;: &quot;0.0 1/cm3&quot;,&#xA;    &quot;Detection limit expl.&quot;: &quot;Determined only by instrument counting statistics, no detection limit flag used&quot;,&#xA;    &quot;Measurement uncertainty&quot;: &quot;5.0 %&quot;,&#xA;    &quot;Measurement uncertainty expl.&quot;: &quot;typical value of unit-to-unit variability&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;CH02L, Paul Scherrer Institut, PSI, Laboratory of Atmospheric Chemistry (LAC), OFLB, , 5232, Villigen PSI, Switzerland&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;CREATE, EMEP, GAW-WDCA&quot;,&#xA;    &quot;Framework name&quot;: &quot;, European Monitoring and Evaluation Programme, World Data Centre for Aerosols&quot;,&#xA;    &quot;Framework description&quot;: &quot;, The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., 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;,&#xA;    &quot;Framework contact name&quot;: &quot;Kjetil Tørseth, Kjetil Tørseth, Markus Fiebig&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;kt@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Weingartner, Ernest, , , , , , , , , &quot;,&#xA;    &quot;Submitter&quot;: &quot;Collaud Coen, Martine, , , , , , , , , &quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;Request acknowledgement details from data originator&quot;,&#xA;    &quot;Comment&quot;: &quot;Concentration corrected to calibrated flow, coincidence correction applied, counting efficiency calibration applied, the measurement temperature is 25°C and the measurement pressure 655 hPa.&quot;&#xA;}" />
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    <attribute name="units" value="1/cm3" />
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    <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_data_level" value="2" />
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    <attribute name="ebas_orig_time_res" value="1h" />
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    <attribute name="ebas_framework_contact_name" value="Kjetil Tørseth, Kjetil Tørseth, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Concentration corrected to calibrated flow, coincidence correction applied, counting efficiency calibration applied, the measurement temperature is 25°C and the measurement pressure 655 hPa." />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="particle_number_concentration_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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" />
    <attribute name="units" value="1/cm3" />
    <attribute name="ancillary_variables" value="particle_number_concentration_prec1587_qc particle_number_concentration_prec1587_ebasmetadata" />
    <attribute name="cell_methods" value="time: percentile:15.87" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170314141141" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="revision, SPT level 2" />
    <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="1h" />
    <attribute name="ebas_station_code" value="CH0001G" />
    <attribute name="ebas_platform_code" value="CH0001S" />
    <attribute name="ebas_station_name" value="Jungfraujoch" />
    <attribute name="ebas_station_wdca_id" value="GAWACH__JFJ" />
    <attribute name="ebas_station_gaw_id" value="JFJ" />
    <attribute name="ebas_station_gaw_name" value="Jungfraujoch" />
    <attribute name="ebas_station_land_use" value="Gravel and stone" />
    <attribute name="ebas_station_setting" value="Mountain" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="46.5475" />
    <attribute name="ebas_station_longitude" value="7.985" />
    <attribute name="ebas_station_altitude" value="3578.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="46.55" />
    <attribute name="ebas_measurement_longitude" value="7.99" />
    <attribute name="ebas_measurement_altitude" value="3580.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="CH02L" />
    <attribute name="ebas_instrument_type" value="cpc" />
    <attribute name="ebas_instrument_name" value="TSI_3772_JFJ_dry" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3772" />
    <attribute name="ebas_instrument_serial_number" value="70634096" />
    <attribute name="ebas_method_ref" value="CH02L_CPC" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="TSP at heated inlet, Digitel, flow &gt;100 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Other (see metadata)" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Heated inlet. Sample dried to below 20% RH due to the heated inlet" />
    <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="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 possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH02L, Paul Scherrer Institut, PSI, Laboratory of Atmospheric Chemistry (LAC), OFLB, , 5232, Villigen PSI, Switzerland" />
    <attribute name="ebas_framework_acronym" value="CREATE, EMEP, GAW-WDCA" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., 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." />
    <attribute name="ebas_framework_contact_name" value="Kjetil Tørseth, Kjetil Tørseth, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Concentration corrected to calibrated flow, coincidence correction applied, counting efficiency calibration applied, the measurement temperature is 25°C and the measurement pressure 655 hPa." />
  </variable>
  <variable name="particle_number_concentration_prec1587_qc" shape="particle_number_concentration_prec1587_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_concentration_prec1587_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="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="particle_number_concentration_perc8413_qc particle_number_concentration_perc8413_ebasmetadata" />
    <attribute name="cell_methods" value="time: percentile:84.13" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20170314141141" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="revision, SPT level 2" />
    <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="1h" />
    <attribute name="ebas_station_code" value="CH0001G" />
    <attribute name="ebas_platform_code" value="CH0001S" />
    <attribute name="ebas_station_name" value="Jungfraujoch" />
    <attribute name="ebas_station_wdca_id" value="GAWACH__JFJ" />
    <attribute name="ebas_station_gaw_id" value="JFJ" />
    <attribute name="ebas_station_gaw_name" value="Jungfraujoch" />
    <attribute name="ebas_station_land_use" value="Gravel and stone" />
    <attribute name="ebas_station_setting" value="Mountain" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="46.5475" />
    <attribute name="ebas_station_longitude" value="7.985" />
    <attribute name="ebas_station_altitude" value="3578.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="46.55" />
    <attribute name="ebas_measurement_longitude" value="7.99" />
    <attribute name="ebas_measurement_altitude" value="3580.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 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="CH02L" />
    <attribute name="ebas_instrument_type" value="cpc" />
    <attribute name="ebas_instrument_name" value="TSI_3772_JFJ_dry" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3772" />
    <attribute name="ebas_instrument_serial_number" value="70634096" />
    <attribute name="ebas_method_ref" value="CH02L_CPC" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="TSP at heated inlet, Digitel, flow &gt;100 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="Other (see metadata)" />
    <attribute name="ebas_humidity_temperaure_control_description" value="Heated inlet. Sample dried to below 20% RH due to the heated inlet" />
    <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="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 possible" />
    <attribute name="ebas_zero_negative_values" value="Zero values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH02L, Paul Scherrer Institut, PSI, Laboratory of Atmospheric Chemistry (LAC), OFLB, , 5232, Villigen PSI, Switzerland" />
    <attribute name="ebas_framework_acronym" value="CREATE, EMEP, GAW-WDCA" />
    <attribute name="ebas_framework_name" value=", European Monitoring and Evaluation Programme, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value=", The European Monitoring and Evaluation Programme (EMEP) is a scientifically based and policy driven programme under the Convention on Long-range Transboundary Air Pollution (CLRTAP) for int'l co-operation to solve transboundary air pollution problems., 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." />
    <attribute name="ebas_framework_contact_name" value="Kjetil Tørseth, Kjetil Tørseth, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Concentration corrected to calibrated flow, coincidence correction applied, counting efficiency calibration applied, the measurement temperature is 25°C and the measurement pressure 655 hPa." />
  </variable>
  <variable name="particle_number_concentration_perc8413_qc" shape="particle_number_concentration_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_concentration_perc8413_ebasmetadata" 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 1900-01-01 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>
</netcdf>
