<?xml version="1.0" encoding="UTF-8"?>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2" location="Not provided because of security concerns.">
  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Ground based in situ observations of filter_absorption_photometer at Rigi (CH0005R)" />
  <attribute name="keywords" value="GAW-WDCA, pm25, Rigi, CH0005R, aerosol_absorption_coefficient, EMEP" />
  <attribute name="id" value="YHM9-G7K6.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="EMEP, GAW-WDCA" />
  <attribute name="acknowledgement" value="Swiss National Air Pollution Monitoring Network NABEL (FOEN/Empa)" />
  <attribute name="doi" value="https://doi.org/10.48597/YHM9-G7K6" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Thomas Seitz, Christoph Hueglin, Thomas Seitz, Christoph Hueglin, aerosol_absorption_coefficient - filter_absorption_photometer at Rigi, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/YHM9-G7K6" />
  <attribute name="summary" value="Ground based in situ observations of filter_absorption_photometer at Rigi (CH0005R). These measurements are gathered as a part of the following projects EMEP, GAW-WDCA and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: aerosol_absorption_coefficient in pm25" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, 8600, Dübendorf, Switzerland" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2022-10-10T09:28:03 UTC" />
  <attribute name="date_metadata_modified" value="2022-10-10T09:28:03 UTC" />
  <attribute name="creator_name" value="Thomas Seitz, Christoph Hueglin, Thomas Seitz, Christoph Hueglin" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value=", , , " />
  <attribute name="creator_institution" value=", , , " />
  <attribute name="contributor_name" value="Thomas Seitz, Thomas Seitz" />
  <attribute name="contributor_role" value="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 (47.0675 8.463889 1031.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="47.0675" />
  <attribute name="geospatial_lat_max" type="double" value="47.0675" />
  <attribute name="geospatial_lon_min" type="double" value="8.463889" />
  <attribute name="geospatial_lon_max" type="double" value="8.463889" />
  <attribute name="geospatial_vertical_min" type="double" value="1031.0" />
  <attribute name="geospatial_vertical_max" type="double" value="1031.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2014-01-01T00:00:00 UTC" />
  <attribute name="time_coverage_end" value="2016-01-01T00:00:00 UTC" />
  <attribute name="time_coverage_duration" value="P0002-00-00T00:00:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-00T01:00:00" />
  <attribute name="timezone" value="UTC" />
  <attribute name="ebas_data_definition" value="EBAS_1.1" />
  <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="ebas_citation" value="Thomas Seitz, Christoph Hueglin, Thomas Seitz, Christoph Hueglin, aerosol_absorption_coefficient - filter_absorption_photometer at Rigi, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/YHM9-G7K6" />
  <attribute name="ebas_set_type_code" value="TU" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="YHM9-G7K6.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/YHM9-G7K6" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/YHM9-G7K6" />
  <attribute name="ebas_file_creation" value="2023-12-12T06:06:19.867606 UTC" />
  <attribute name="ebas_export_state" value="2022-10-10T09:28:03.831762 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="20140101000000" />
  <attribute name="ebas_revision_date" value="20221010092803" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="None" />
  <attribute name="ebas_statistics" value="arithmetic mean" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="2y" />
  <attribute name="ebas_resolution_code" value="1h" />
  <attribute name="ebas_sample_duration" value="1h" />
  <attribute name="ebas_orig_time_res" value="10mn" />
  <attribute name="ebas_station_code" value="CH0005R" />
  <attribute name="ebas_platform_code" value="CH0005S" />
  <attribute name="ebas_station_name" value="Rigi" />
  <attribute name="ebas_station_gaw_id" value="RIG" />
  <attribute name="ebas_station_latitude" value="47.0675" />
  <attribute name="ebas_station_longitude" value="8.463889" />
  <attribute name="ebas_station_altitude" value="1031.0 m" />
  <attribute name="ebas_measurement_height" value="4.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_laboratory_code" value="CH01L" />
  <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
  <attribute name="ebas_instrument_name" value="Aethalometer_RIG" />
  <attribute name="ebas_instrument_manufacturer" value="Magee" />
  <attribute name="ebas_instrument_model" value="AE33" />
  <attribute name="ebas_instrument_serial_number" value="unknown" />
  <attribute name="ebas_method_ref" value="CH01L_Lab" />
  <attribute name="ebas_standard_method" value="None" />
  <attribute name="ebas_inlet_type" value="Cyclone" />
  <attribute name="ebas_inlet_description" value="PM2.5, BGI SCC, flow 5 l/min" />
  <attribute name="ebas_humidity_temperaure_control" value="None" />
  <attribute name="ebas_humidity_temperaure_control_description" value="passive" />
  <attribute name="ebas_volume_std_temperature" value="273.15 K" />
  <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
  <attribute name="ebas_measurement_uncertainty_expl" value="Between sampler uncertainty calculated from parallel measurement with two identical units" />
  <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
  <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
  <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
  <attribute name="ebas_framework_acronym" value="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, Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="kt@nilu.no, Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="Hueglin, Christoph, , , , , , , , , " />
  <attribute name="ebas_submitter" value="Seitz, Thomas, , , , , , , , , " />
  <attribute name="ebas_acknowledgement" value="Swiss National Air Pollution Monitoring Network NABEL (FOEN/Empa)" />
  <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;Thomas Seitz, Christoph Hueglin, Thomas Seitz, Christoph Hueglin, aerosol_absorption_coefficient - filter_absorption_photometer at Rigi, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/YHM9-G7K6&quot;,&#xA;    &quot;Set type code&quot;: &quot;TU&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;YHM9-G7K6.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/YHM9-G7K6&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/YHM9-G7K6&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-12-12T06:06:19.867606 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2022-10-10T09:28:03.831762 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20140101000000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20221010092803&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;None&quot;,&#xA;    &quot;Statistics&quot;: &quot;arithmetic mean&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;2y&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1h&quot;,&#xA;    &quot;Sample duration&quot;: &quot;1h&quot;,&#xA;    &quot;Orig. time res.&quot;: &quot;10mn&quot;,&#xA;    &quot;Station code&quot;: &quot;CH0005R&quot;,&#xA;    &quot;Platform code&quot;: &quot;CH0005S&quot;,&#xA;    &quot;Station name&quot;: &quot;Rigi&quot;,&#xA;    &quot;Station GAW-ID&quot;: &quot;RIG&quot;,&#xA;    &quot;Station latitude&quot;: &quot;47.0675&quot;,&#xA;    &quot;Station longitude&quot;: &quot;8.463889&quot;,&#xA;    &quot;Station altitude&quot;: &quot;1031.0 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;CH01L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;filter_absorption_photometer&quot;,&#xA;    &quot;Instrument name&quot;: &quot;Aethalometer_RIG&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;Magee&quot;,&#xA;    &quot;Instrument model&quot;: &quot;AE33&quot;,&#xA;    &quot;Instrument serial number&quot;: &quot;unknown&quot;,&#xA;    &quot;Method ref&quot;: &quot;CH01L_Lab&quot;,&#xA;    &quot;Standard method&quot;: &quot;None&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Cyclone&quot;,&#xA;    &quot;Inlet description&quot;: &quot;PM2.5, BGI SCC, flow 5 l/min&quot;,&#xA;    &quot;Humidity/temperature control&quot;: &quot;None&quot;,&#xA;    &quot;Humidity/temperature control description&quot;: &quot;passive&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;Between sampler uncertainty calculated from parallel measurement with two identical units&quot;,&#xA;    &quot;Zero/negative values code&quot;: &quot;Zero/negative possible&quot;,&#xA;    &quot;Zero/negative values&quot;: &quot;Zero and neg. values may appear due to statistical variations at very low concentrations&quot;,&#xA;    &quot;Organization&quot;: &quot;CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland&quot;,&#xA;    &quot;Framework acronym&quot;: &quot;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, Markus Fiebig&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;kt@nilu.no, Markus.Fiebig@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Hueglin, Christoph, , , , , , , , , &quot;,&#xA;    &quot;Submitter&quot;: &quot;Seitz, Thomas, , , , , , , , , &quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;Swiss National Air Pollution Monitoring Network NABEL (FOEN/Empa)&quot;&#xA;}" />
  <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="17520" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="2" />
  <dimension name="pressure_qc_flags" length="1" />
  <dimension name="relative_humidity_qc_flags" length="1" />
  <dimension name="temperature_qc_flags" length="1" />
  <dimension name="aerosol_absorption_coefficient_0_qc_flags" length="1" />
  <dimension name="aerosol_absorption_coefficient_1_qc_flags" length="1" />
  <dimension name="aerosol_absorption_coefficient_2_qc_flags" length="1" />
  <dimension name="aerosol_absorption_coefficient_3_qc_flags" length="1" />
  <dimension name="aerosol_absorption_coefficient_4_qc_flags" length="1" />
  <dimension name="aerosol_absorption_coefficient_5_qc_flags" length="1" />
  <dimension name="aerosol_absorption_coefficient_6_qc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2014-01-01T00:30:00Z" />
    <attribute name="time_coverage_end" value="2015-12-31T23:30:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="3600.0" />
    <attribute name="time_coverage_duration" value="P0Y0M729DT23H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-05-18" />
    <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="pressure" shape="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="pressure_qc pressure_ebasmetadata" />
    <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="20221010092803" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="None" />
    <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="10mn" />
    <attribute name="ebas_station_code" value="CH0005R" />
    <attribute name="ebas_platform_code" value="CH0005S" />
    <attribute name="ebas_station_name" value="Rigi" />
    <attribute name="ebas_station_gaw_id" value="RIG" />
    <attribute name="ebas_station_latitude" value="47.0675" />
    <attribute name="ebas_station_longitude" value="8.463889" />
    <attribute name="ebas_station_altitude" value="1031.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 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="CH01L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Aethalometer_RIG" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE33" />
    <attribute name="ebas_instrument_serial_number" value="unknown" />
    <attribute name="ebas_method_ref" value="CH01L_Lab" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5, BGI SCC, flow 5 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Between sampler uncertainty calculated from parallel measurement with two identical units" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="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, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_acknowledgement" value="Swiss National Air Pollution Monitoring Network NABEL (FOEN/Empa)" />
  </variable>
  <variable name="pressure_qc" shape="pressure_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="pressure_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="relative_humidity" shape="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="relative_humidity_qc relative_humidity_ebasmetadata" />
    <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="20221010092803" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="None" />
    <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="10mn" />
    <attribute name="ebas_station_code" value="CH0005R" />
    <attribute name="ebas_platform_code" value="CH0005S" />
    <attribute name="ebas_station_name" value="Rigi" />
    <attribute name="ebas_station_gaw_id" value="RIG" />
    <attribute name="ebas_station_latitude" value="47.0675" />
    <attribute name="ebas_station_longitude" value="8.463889" />
    <attribute name="ebas_station_altitude" value="1031.0 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="CH01L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Aethalometer_RIG" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE33" />
    <attribute name="ebas_instrument_serial_number" value="unknown" />
    <attribute name="ebas_method_ref" value="CH01L_Lab" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5, BGI SCC, flow 5 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Between sampler uncertainty calculated from parallel measurement with two identical units" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="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, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_acknowledgement" value="Swiss National Air Pollution Monitoring Network NABEL (FOEN/Empa)" />
  </variable>
  <variable name="relative_humidity_qc" shape="relative_humidity_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="relative_humidity_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="temperature" shape="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="temperature_qc temperature_ebasmetadata" />
    <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="20221010092803" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="None" />
    <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="10mn" />
    <attribute name="ebas_station_code" value="CH0005R" />
    <attribute name="ebas_platform_code" value="CH0005S" />
    <attribute name="ebas_station_name" value="Rigi" />
    <attribute name="ebas_station_gaw_id" value="RIG" />
    <attribute name="ebas_station_latitude" value="47.0675" />
    <attribute name="ebas_station_longitude" value="8.463889" />
    <attribute name="ebas_station_altitude" value="1031.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 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="CH01L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Aethalometer_RIG" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE33" />
    <attribute name="ebas_instrument_serial_number" value="unknown" />
    <attribute name="ebas_method_ref" value="CH01L_Lab" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5, BGI SCC, flow 5 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Between sampler uncertainty calculated from parallel measurement with two identical units" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="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, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_acknowledgement" value="Swiss National Air Pollution Monitoring Network NABEL (FOEN/Empa)" />
    <attribute name="ebas_comment" value="Data converted on import into EBAS from 'deg C' to 'K', adding 273.15." />
  </variable>
  <variable name="temperature_qc" shape="temperature_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="temperature_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_absorption_coefficient_0" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="aerosol_absorption_coefficient_0_qc aerosol_absorption_coefficient_0_ebasmetadata" />
    <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="20221010092803" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="None" />
    <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="10mn" />
    <attribute name="ebas_station_code" value="CH0005R" />
    <attribute name="ebas_platform_code" value="CH0005S" />
    <attribute name="ebas_station_name" value="Rigi" />
    <attribute name="ebas_station_gaw_id" value="RIG" />
    <attribute name="ebas_station_latitude" value="47.0675" />
    <attribute name="ebas_station_longitude" value="8.463889" />
    <attribute name="ebas_station_altitude" value="1031.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Aethalometer_RIG" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE33" />
    <attribute name="ebas_instrument_serial_number" value="unknown" />
    <attribute name="ebas_method_ref" value="CH01L_Lab" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5, BGI SCC, flow 5 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive" />
    <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="0.5 1/Mm" />
    <attribute name="ebas_detection_limit_expl" value="unknown yet, to be determined from instrument noise" />
    <attribute name="ebas_measurement_uncertainty" value="5.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Between sampler uncertainty calculated from parallel measurement with two identical units" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="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, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_acknowledgement" value="Swiss National Air Pollution Monitoring Network NABEL (FOEN/Empa)" />
  </variable>
  <variable name="aerosol_absorption_coefficient_0_qc" shape="aerosol_absorption_coefficient_0_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="aerosol_absorption_coefficient_0_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_absorption_coefficient_1" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="aerosol_absorption_coefficient_1_qc aerosol_absorption_coefficient_1_ebasmetadata" />
    <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="20221010092803" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="None" />
    <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="10mn" />
    <attribute name="ebas_station_code" value="CH0005R" />
    <attribute name="ebas_platform_code" value="CH0005S" />
    <attribute name="ebas_station_name" value="Rigi" />
    <attribute name="ebas_station_gaw_id" value="RIG" />
    <attribute name="ebas_station_latitude" value="47.0675" />
    <attribute name="ebas_station_longitude" value="8.463889" />
    <attribute name="ebas_station_altitude" value="1031.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Aethalometer_RIG" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE33" />
    <attribute name="ebas_instrument_serial_number" value="unknown" />
    <attribute name="ebas_method_ref" value="CH01L_Lab" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5, BGI SCC, flow 5 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive" />
    <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="0.5 1/Mm" />
    <attribute name="ebas_detection_limit_expl" value="unknown yet, to be determined from instrument noise" />
    <attribute name="ebas_measurement_uncertainty" value="5.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Between sampler uncertainty calculated from parallel measurement with two identical units" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="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, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_acknowledgement" value="Swiss National Air Pollution Monitoring Network NABEL (FOEN/Empa)" />
  </variable>
  <variable name="aerosol_absorption_coefficient_1_qc" shape="aerosol_absorption_coefficient_1_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="aerosol_absorption_coefficient_1_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_absorption_coefficient_2" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="aerosol_absorption_coefficient_2_qc aerosol_absorption_coefficient_2_ebasmetadata" />
    <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="20221010092803" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="None" />
    <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="10mn" />
    <attribute name="ebas_station_code" value="CH0005R" />
    <attribute name="ebas_platform_code" value="CH0005S" />
    <attribute name="ebas_station_name" value="Rigi" />
    <attribute name="ebas_station_gaw_id" value="RIG" />
    <attribute name="ebas_station_latitude" value="47.0675" />
    <attribute name="ebas_station_longitude" value="8.463889" />
    <attribute name="ebas_station_altitude" value="1031.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Aethalometer_RIG" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE33" />
    <attribute name="ebas_instrument_serial_number" value="unknown" />
    <attribute name="ebas_method_ref" value="CH01L_Lab" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5, BGI SCC, flow 5 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive" />
    <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="0.5 1/Mm" />
    <attribute name="ebas_detection_limit_expl" value="unknown yet, to be determined from instrument noise" />
    <attribute name="ebas_measurement_uncertainty" value="5.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Between sampler uncertainty calculated from parallel measurement with two identical units" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="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, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_acknowledgement" value="Swiss National Air Pollution Monitoring Network NABEL (FOEN/Empa)" />
  </variable>
  <variable name="aerosol_absorption_coefficient_2_qc" shape="aerosol_absorption_coefficient_2_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="aerosol_absorption_coefficient_2_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_absorption_coefficient_3" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="aerosol_absorption_coefficient_3_qc aerosol_absorption_coefficient_3_ebasmetadata" />
    <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="20221010092803" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="None" />
    <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="10mn" />
    <attribute name="ebas_station_code" value="CH0005R" />
    <attribute name="ebas_platform_code" value="CH0005S" />
    <attribute name="ebas_station_name" value="Rigi" />
    <attribute name="ebas_station_gaw_id" value="RIG" />
    <attribute name="ebas_station_latitude" value="47.0675" />
    <attribute name="ebas_station_longitude" value="8.463889" />
    <attribute name="ebas_station_altitude" value="1031.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Aethalometer_RIG" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE33" />
    <attribute name="ebas_instrument_serial_number" value="unknown" />
    <attribute name="ebas_method_ref" value="CH01L_Lab" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5, BGI SCC, flow 5 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive" />
    <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="0.5 1/Mm" />
    <attribute name="ebas_detection_limit_expl" value="unknown yet, to be determined from instrument noise" />
    <attribute name="ebas_measurement_uncertainty" value="5.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Between sampler uncertainty calculated from parallel measurement with two identical units" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="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, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_acknowledgement" value="Swiss National Air Pollution Monitoring Network NABEL (FOEN/Empa)" />
  </variable>
  <variable name="aerosol_absorption_coefficient_3_qc" shape="aerosol_absorption_coefficient_3_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="aerosol_absorption_coefficient_3_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_absorption_coefficient_4" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="aerosol_absorption_coefficient_4_qc aerosol_absorption_coefficient_4_ebasmetadata" />
    <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="20221010092803" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="None" />
    <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="10mn" />
    <attribute name="ebas_station_code" value="CH0005R" />
    <attribute name="ebas_platform_code" value="CH0005S" />
    <attribute name="ebas_station_name" value="Rigi" />
    <attribute name="ebas_station_gaw_id" value="RIG" />
    <attribute name="ebas_station_latitude" value="47.0675" />
    <attribute name="ebas_station_longitude" value="8.463889" />
    <attribute name="ebas_station_altitude" value="1031.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Aethalometer_RIG" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE33" />
    <attribute name="ebas_instrument_serial_number" value="unknown" />
    <attribute name="ebas_method_ref" value="CH01L_Lab" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5, BGI SCC, flow 5 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive" />
    <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="0.5 1/Mm" />
    <attribute name="ebas_detection_limit_expl" value="unknown yet, to be determined from instrument noise" />
    <attribute name="ebas_measurement_uncertainty" value="5.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Between sampler uncertainty calculated from parallel measurement with two identical units" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="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, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_acknowledgement" value="Swiss National Air Pollution Monitoring Network NABEL (FOEN/Empa)" />
  </variable>
  <variable name="aerosol_absorption_coefficient_4_qc" shape="aerosol_absorption_coefficient_4_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="aerosol_absorption_coefficient_4_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_absorption_coefficient_5" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="aerosol_absorption_coefficient_5_qc aerosol_absorption_coefficient_5_ebasmetadata" />
    <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="20221010092803" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="None" />
    <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="10mn" />
    <attribute name="ebas_station_code" value="CH0005R" />
    <attribute name="ebas_platform_code" value="CH0005S" />
    <attribute name="ebas_station_name" value="Rigi" />
    <attribute name="ebas_station_gaw_id" value="RIG" />
    <attribute name="ebas_station_latitude" value="47.0675" />
    <attribute name="ebas_station_longitude" value="8.463889" />
    <attribute name="ebas_station_altitude" value="1031.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Aethalometer_RIG" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE33" />
    <attribute name="ebas_instrument_serial_number" value="unknown" />
    <attribute name="ebas_method_ref" value="CH01L_Lab" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5, BGI SCC, flow 5 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive" />
    <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="0.5 1/Mm" />
    <attribute name="ebas_detection_limit_expl" value="unknown yet, to be determined from instrument noise" />
    <attribute name="ebas_measurement_uncertainty" value="5.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Between sampler uncertainty calculated from parallel measurement with two identical units" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="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, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_acknowledgement" value="Swiss National Air Pollution Monitoring Network NABEL (FOEN/Empa)" />
  </variable>
  <variable name="aerosol_absorption_coefficient_5_qc" shape="aerosol_absorption_coefficient_5_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="aerosol_absorption_coefficient_5_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_absorption_coefficient_6" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="aerosol_absorption_coefficient_6_qc aerosol_absorption_coefficient_6_ebasmetadata" />
    <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="20221010092803" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="None" />
    <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="10mn" />
    <attribute name="ebas_station_code" value="CH0005R" />
    <attribute name="ebas_platform_code" value="CH0005S" />
    <attribute name="ebas_station_name" value="Rigi" />
    <attribute name="ebas_station_gaw_id" value="RIG" />
    <attribute name="ebas_station_latitude" value="47.0675" />
    <attribute name="ebas_station_longitude" value="8.463889" />
    <attribute name="ebas_station_altitude" value="1031.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="CH01L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Aethalometer_RIG" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE33" />
    <attribute name="ebas_instrument_serial_number" value="unknown" />
    <attribute name="ebas_method_ref" value="CH01L_Lab" />
    <attribute name="ebas_standard_method" value="None" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="PM2.5, BGI SCC, flow 5 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive" />
    <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="0.5 1/Mm" />
    <attribute name="ebas_detection_limit_expl" value="unknown yet, to be determined from instrument noise" />
    <attribute name="ebas_measurement_uncertainty" value="5.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="Between sampler uncertainty calculated from parallel measurement with two identical units" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
    <attribute name="ebas_organization" value="CH01L, Swiss Federal Laboratories for Materials Science and Technology, EMPA, Section Air Pollution, Überlandstrasse 133, , 8600, Dübendorf, Switzerland" />
    <attribute name="ebas_framework_acronym" value="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, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="kt@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_acknowledgement" value="Swiss National Air Pollution Monitoring Network NABEL (FOEN/Empa)" />
  </variable>
  <variable name="aerosol_absorption_coefficient_6_qc" shape="aerosol_absorption_coefficient_6_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="aerosol_absorption_coefficient_6_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>
