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  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Ground based in situ observations of impactor at Hyytiälä (FI0050R)" />
  <attribute name="keywords" value="mass_concentration_of_pm2p5_ambient_aerosol_particles_in_air, pm25_mass, GAW-WDCA, pm1_mass, pm25, pm10, mass_concentration_of_pm10_ambient_aerosol_particles_in_air, Hyytiälä, pm1, FI0050R, pm10_mass, EMEP, mass_concentration_of_pm1_ambient_aerosol_particles_in_air" />
  <attribute name="id" value="GBMT-S7YE.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="EMEP, GAW-WDCA" />
  <attribute name="acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="doi" value="https://doi.org/10.48597/GBMT-S7YE" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Markku Kulmala, Tuukka Petaja, pm10_mass, pm1_mass, pm25_mass - impactor at Hyytiälä, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/GBMT-S7YE" />
  <attribute name="summary" value="Ground based in situ observations of impactor at Hyytiälä (FI0050R). 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: pm10_mass in pm10 (mass_concentration_of_pm10_ambient_aerosol_particles_in_air), pm1_mass in pm1 (mass_concentration_of_pm1_ambient_aerosol_particles_in_air), pm25_mass in pm25 (mass_concentration_of_pm2p5_ambient_aerosol_particles_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="FI03L, University of Helsinki, UHEL, Institute for Atmospheric and Earth System Research (INAR), PO BOX 64, FI-00014, University of Helsinki, Finland" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2017-05-31T00:00:00 UTC" />
  <attribute name="date_metadata_modified" value="2017-05-31T00:00:00 UTC" />
  <attribute name="creator_name" value="Markku Kulmala, Tuukka Petaja" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value=", tuukka.petaja@helsinki.fi" />
  <attribute name="creator_institution" value=", &quot;University of Helsinki, Division of Atmospheric Sciences, Department of Physics, UHEL&quot;" />
  <attribute name="contributor_name" value="Helmi Keskinen, Pasi Aalto" />
  <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/" />
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  <attribute name="time_coverage_start" value="2016-01-03T22:00:00 UTC" />
  <attribute name="time_coverage_end" value="2016-12-29T22:00:00 UTC" />
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  <attribute name="ebas_citation" value="Markku Kulmala, Tuukka Petaja, pm10_mass, pm1_mass, pm25_mass - impactor at Hyytiälä, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/GBMT-S7YE" />
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  <attribute name="ebas_file_creation" value="2023-12-09T16:02:42.147578 UTC" />
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  <attribute name="ebas_version_description" value="initial submission" />
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  <attribute name="ebas_station_name" value="Hyytiälä" />
  <attribute name="ebas_station_gaw_id" value="HYY" />
  <attribute name="ebas_station_state_province" value="Pirka" />
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  <attribute name="ebas_station_setting" value="Rural" />
  <attribute name="ebas_station_gaw_type" value="R" />
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  <attribute name="ebas_station_latitude" value="61.85" />
  <attribute name="ebas_station_longitude" value="24.283333" />
  <attribute name="ebas_station_altitude" value="181.0 m" />
  <attribute name="ebas_measuremenet_latitude" value="61.847" />
  <attribute name="ebas_measurement_longitude" value="24.295" />
  <attribute name="ebas_measurement_altitude" value="179.0 m" />
  <attribute name="ebas_measurement_height" value="8.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_unit" value="ug/m3" />
  <attribute name="ebas_laboratory_code" value="FI03L" />
  <attribute name="ebas_instrument_type" value="impactor" />
  <attribute name="ebas_instrument_name" value="DekatiPM10impactor" />
  <attribute name="ebas_instrument_manufacturer" value="Dekati" />
  <attribute name="ebas_instrument_model" value="Cascade" />
  <attribute name="ebas_instrument_serial_number" value="0" />
  <attribute name="ebas_method_ref" value="FI03L_pm10_impactor" />
  <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v1996" />
  <attribute name="ebas_inlet_type" value="Impactor--direct" />
  <attribute name="ebas_inlet_description" value="PM10 at ambient humidity inlet,deliverd with sampler,flow 30lpm" />
  <attribute name="ebas_medium" value="Teflon" />
  <attribute name="ebas_sample_preparation" value="Temperature and humidity equilibration" />
  <attribute name="ebas_blank_correction" value="Not blank corrected" />
  <attribute name="ebas_humidity_temperaure_control" value="None" />
  <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
  <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="0.33 ug/m3" />
  <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
  <attribute name="ebas_measurement_uncertainty" value="0.6 ug/m3" />
  <attribute name="ebas_measurement_uncertainty_expl" value="includes uncertainties of 2 weighing processes(based on ref. lab blank weighings over a year) and volume flow measurement" />
  <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
  <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if with in detection limit,flagged with 780" />
  <attribute name="ebas_organization" value="FI03L, University of Helsinki, UHEL, Institute for Atmospheric and Earth System Research (INAR), PO BOX 64, , FI-00014, University of Helsinki, Finland" />
  <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="Petaja, Tuukka, tuukka.petaja@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, Helsinki, Finland" />
  <attribute name="ebas_submitter" value="Aalto, Pasi, , , , , , , , , " />
  <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="ebas_comment" value="No comments" />
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  <attribute name="Metadata_Conventions" value="Unidata Dataset Discovery v1.0" />
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  <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;Markku Kulmala, Tuukka Petaja, pm10_mass, pm1_mass, pm25_mass - impactor at Hyytiälä, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/GBMT-S7YE&quot;,&#xA;    &quot;Set type code&quot;: &quot;TI&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;GBMT-S7YE.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/GBMT-S7YE&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/GBMT-S7YE&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-12-09T16:02:42.147578 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2018-08-08T11:41:23.610000 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20160103220000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20170531000000&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;initial submission&quot;,&#xA;    &quot;Statistics&quot;: &quot;arithmetic mean&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;1y&quot;,&#xA;    &quot;Resolution code&quot;: &quot;2d&quot;,&#xA;    &quot;Sample duration&quot;: &quot;2d&quot;,&#xA;    &quot;Orig. time res.&quot;: &quot;1d&quot;,&#xA;    &quot;Station code&quot;: &quot;FI0050R&quot;,&#xA;    &quot;Platform code&quot;: &quot;FI0050S&quot;,&#xA;    &quot;Station name&quot;: &quot;Hyytiälä&quot;,&#xA;    &quot;Station GAW-ID&quot;: &quot;HYY&quot;,&#xA;    &quot;Station state/province&quot;: &quot;Pirka&quot;,&#xA;    &quot;Station land use&quot;: &quot;Forest&quot;,&#xA;    &quot;Station setting&quot;: &quot;Rural&quot;,&#xA;    &quot;Station GAW type&quot;: &quot;R&quot;,&#xA;    &quot;Station WMO region&quot;: &quot;6&quot;,&#xA;    &quot;Station latitude&quot;: &quot;61.85&quot;,&#xA;    &quot;Station longitude&quot;: &quot;24.283333&quot;,&#xA;    &quot;Station altitude&quot;: &quot;181.0 m&quot;,&#xA;    &quot;Measurement latitude&quot;: &quot;61.847&quot;,&#xA;    &quot;Measurement longitude&quot;: &quot;24.295&quot;,&#xA;    &quot;Measurement altitude&quot;: &quot;179.0 m&quot;,&#xA;    &quot;Measurement height&quot;: &quot;8.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Unit&quot;: &quot;ug/m3&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;FI03L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;impactor&quot;,&#xA;    &quot;Instrument name&quot;: &quot;DekatiPM10impactor&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;Dekati&quot;,&#xA;    &quot;Instrument model&quot;: &quot;Cascade&quot;,&#xA;    &quot;Instrument serial number&quot;: &quot;0&quot;,&#xA;    &quot;Method ref&quot;: &quot;FI03L_pm10_impactor&quot;,&#xA;    &quot;Standard method&quot;: &quot;SOP=EMEP_manual_v1996&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Impactor--direct&quot;,&#xA;    &quot;Inlet description&quot;: &quot;PM10 at ambient humidity inlet,deliverd with sampler,flow 30lpm&quot;,&#xA;    &quot;Medium&quot;: &quot;Teflon&quot;,&#xA;    &quot;Sample preparation&quot;: &quot;Temperature and humidity equilibration&quot;,&#xA;    &quot;Blank correction&quot;: &quot;Not blank corrected&quot;,&#xA;    &quot;Humidity/temperature control&quot;: &quot;None&quot;,&#xA;    &quot;Humidity/temperature control description&quot;: &quot;filter kept at ambient conditions together with sampling head.&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;0.33 ug/m3&quot;,&#xA;    &quot;Detection limit expl.&quot;: &quot;Determined by taking 3 times standard deviation of ensemble of field blanks&quot;,&#xA;    &quot;Measurement uncertainty&quot;: &quot;0.6 ug/m3&quot;,&#xA;    &quot;Measurement uncertainty expl.&quot;: &quot;includes uncertainties of 2 weighing processes(based on ref. lab blank weighings over a year) and volume flow measurement&quot;,&#xA;    &quot;Zero/negative values code&quot;: &quot;Zero/negative possible&quot;,&#xA;    &quot;Zero/negative values&quot;: &quot;Zero/negative values reported as measured if with in detection limit,flagged with 780&quot;,&#xA;    &quot;Organization&quot;: &quot;FI03L, University of Helsinki, UHEL, Institute for Atmospheric and Earth System Research (INAR), PO BOX 64, , FI-00014, University of Helsinki, Finland&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;Petaja, Tuukka, tuukka.petaja@helsinki.fi, University of Helsinki, UHEL, \&quot;Division of Atmospheric Sciences, Department of Physics\&quot;, PO BOX 64, , FI-00014, Helsinki, Finland&quot;,&#xA;    &quot;Submitter&quot;: &quot;Aalto, Pasi, , , , , , , , , &quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;Request acknowledgement details from data originator&quot;,&#xA;    &quot;Comment&quot;: &quot;No comments&quot;&#xA;}" />
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  <dimension name="time" length="148" />
  <dimension name="tbnds" length="2" />
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  <variable name="pm10_mass_qc" shape="pm10_mass_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="pm10_mass_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="pm1_mass" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_pm1_ambient_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="pm1_mass_qc pm1_mass_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="20170531000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial submission" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="2d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="FI0050R" />
    <attribute name="ebas_platform_code" value="FI0050S" />
    <attribute name="ebas_station_name" value="Hyytiälä" />
    <attribute name="ebas_station_gaw_id" value="HYY" />
    <attribute name="ebas_station_state_province" value="Pirka" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="61.85" />
    <attribute name="ebas_station_longitude" value="24.283333" />
    <attribute name="ebas_station_altitude" value="181.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="61.847" />
    <attribute name="ebas_measurement_longitude" value="24.295" />
    <attribute name="ebas_measurement_altitude" value="179.0 m" />
    <attribute name="ebas_measurement_height" value="8.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pm1_mass" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm1" />
    <attribute name="ebas_laboratory_code" value="FI03L" />
    <attribute name="ebas_instrument_type" value="impactor" />
    <attribute name="ebas_instrument_name" value="DekatiPM10impactor" />
    <attribute name="ebas_instrument_manufacturer" value="Dekati" />
    <attribute name="ebas_instrument_model" value="Cascade" />
    <attribute name="ebas_instrument_serial_number" value="0" />
    <attribute name="ebas_method_ref" value="FI03L_pm10_impactor" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v1996" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="PM10 at ambient humidity inlet,deliverd with sampler,flow 30lpm" />
    <attribute name="ebas_medium" value="Teflon" />
    <attribute name="ebas_sample_preparation" value="Temperature and humidity equilibration" />
    <attribute name="ebas_blank_correction" value="Not blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
    <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="0.33 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_measurement_uncertainty" value="0.6 ug/m3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="includes uncertainties of 2 weighing processes(based on ref. lab blank weighings over a year) and volume flow measurement" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if with in detection limit,flagged with 780" />
    <attribute name="ebas_organization" value="FI03L, University of Helsinki, UHEL, Institute for Atmospheric and Earth System Research (INAR), PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <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="Petaja, Tuukka, tuukka.petaja@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, Helsinki, Finland" />
    <attribute name="ebas_submitter" value="Aalto, Pasi, , , , , , , , , " />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="No comments" />
  </variable>
  <variable name="pm1_mass_qc" shape="pm1_mass_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="pm1_mass_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="pm25_mass" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_pm2p5_ambient_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="pm25_mass_qc pm25_mass_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="20170531000000" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial submission" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="2d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="FI0050R" />
    <attribute name="ebas_platform_code" value="FI0050S" />
    <attribute name="ebas_station_name" value="Hyytiälä" />
    <attribute name="ebas_station_gaw_id" value="HYY" />
    <attribute name="ebas_station_state_province" value="Pirka" />
    <attribute name="ebas_station_land_use" value="Forest" />
    <attribute name="ebas_station_setting" value="Rural" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="61.85" />
    <attribute name="ebas_station_longitude" value="24.283333" />
    <attribute name="ebas_station_altitude" value="181.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="61.847" />
    <attribute name="ebas_measurement_longitude" value="24.295" />
    <attribute name="ebas_measurement_altitude" value="179.0 m" />
    <attribute name="ebas_measurement_height" value="8.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pm25_mass" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="FI03L" />
    <attribute name="ebas_instrument_type" value="impactor" />
    <attribute name="ebas_instrument_name" value="DekatiPM10impactor" />
    <attribute name="ebas_instrument_manufacturer" value="Dekati" />
    <attribute name="ebas_instrument_model" value="Cascade" />
    <attribute name="ebas_instrument_serial_number" value="0" />
    <attribute name="ebas_method_ref" value="FI03L_pm10_impactor" />
    <attribute name="ebas_standard_method" value="SOP=EMEP_manual_v1996" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="PM10 at ambient humidity inlet,deliverd with sampler,flow 30lpm" />
    <attribute name="ebas_medium" value="Teflon" />
    <attribute name="ebas_sample_preparation" value="Temperature and humidity equilibration" />
    <attribute name="ebas_blank_correction" value="Not blank corrected" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head." />
    <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="0.33 ug/m3" />
    <attribute name="ebas_detection_limit_expl" value="Determined by taking 3 times standard deviation of ensemble of field blanks" />
    <attribute name="ebas_measurement_uncertainty" value="0.6 ug/m3" />
    <attribute name="ebas_measurement_uncertainty_expl" value="includes uncertainties of 2 weighing processes(based on ref. lab blank weighings over a year) and volume flow measurement" />
    <attribute name="ebas_zero_negative_values_code" value="Zero/negative possible" />
    <attribute name="ebas_zero_negative_values" value="Zero/negative values reported as measured if with in detection limit,flagged with 780" />
    <attribute name="ebas_organization" value="FI03L, University of Helsinki, UHEL, Institute for Atmospheric and Earth System Research (INAR), PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <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="Petaja, Tuukka, tuukka.petaja@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, Helsinki, Finland" />
    <attribute name="ebas_submitter" value="Aalto, Pasi, , , , , , , , , " />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="No comments" />
  </variable>
  <variable name="pm25_mass_qc" shape="pm25_mass_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="pm25_mass_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>
