<?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 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="G9K5-6JBY.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/G9K5-6JBY" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Markku Kulmala, Tuukka Petaja, 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/G9K5-6JBY" />
  <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="2018-01-23T00:00:00 UTC" />
  <attribute name="date_metadata_modified" value="2018-01-23T00:00:00 UTC" />
  <attribute name="creator_name" value="Markku Kulmala, Tuukka Petaja, Markku Kulmala, Tuukka Petaja" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value=", tuukka.petaja@helsinki.fi, , tuukka.petaja@helsinki.fi" />
  <attribute name="creator_institution" value=", &quot;University of Helsinki, Division of Atmospheric Sciences, Department of Physics, UHEL&quot;, , &quot;University of Helsinki, Division of Atmospheric Sciences, Department of Physics, UHEL&quot;" />
  <attribute name="contributor_name" value="Helmi Keskinen, Pasi Aalto, Helmi Keskinen, Pasi Aalto" />
  <attribute name="contributor_role" value="data submitter, data submitter, data submitter, data submitter" />
  <attribute name="publisher_type" value="institution" />
  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_institution" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_email" value="ebas@nilu.no" />
  <attribute name="publisher_url" value="https://www.nilu.no/" />
  <attribute name="geospatial_bounds" value="POINT Z (61.847 24.295 179.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="61.847" />
  <attribute name="geospatial_lat_max" type="double" value="61.847" />
  <attribute name="geospatial_lon_min" type="double" value="24.295" />
  <attribute name="geospatial_lon_max" type="double" value="24.295" />
  <attribute name="geospatial_vertical_min" type="double" value="179.0" />
  <attribute name="geospatial_vertical_max" type="double" value="179.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2016-01-03T22:00:00 UTC" />
  <attribute name="time_coverage_end" value="2018-01-01T22:00:00 UTC" />
  <attribute name="time_coverage_duration" value="P0001-11-29T00:00:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-02T00:00:00" />
  <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="Markku Kulmala, Tuukka Petaja, 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/G9K5-6JBY" />
  <attribute name="ebas_set_type_code" value="TI" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="G9K5-6JBY.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/G9K5-6JBY" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/G9K5-6JBY" />
  <attribute name="ebas_file_creation" value="2023-12-10T07:41:42.550685 UTC" />
  <attribute name="ebas_export_state" value="2018-08-08T11:49:05.317000 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="20160103220000" />
  <attribute name="ebas_revision_date" value="20180123000000" />
  <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_period_code" value="2y" />
  <attribute name="ebas_resolution_code" value="2d" />
  <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_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_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" />
  <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;Markku Kulmala, Tuukka Petaja, 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/G9K5-6JBY&quot;,&#xA;    &quot;Set type code&quot;: &quot;TI&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;G9K5-6JBY.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/G9K5-6JBY&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/G9K5-6JBY&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-12-10T07:41:42.550685 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2018-08-08T11:49:05.317000 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;20180123000000&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;2y&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;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;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;}" />
  <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="291" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="2" />
  <dimension name="pm10_mass_qc_flags" length="1" />
  <dimension name="pm1_mass_qc_flags" length="1" />
  <dimension name="pm25_mass_qc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2016-01-05T22:00:00Z" />
    <attribute name="time_coverage_end" value="2017-12-30T22:00:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="216000.0" />
    <attribute name="time_coverage_duration" value="P0Y0M725DT0H0M0.000S" />
  </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>
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_pm10_ambient_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="pm10_mass_qc pm10_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="20180123000000" />
    <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_regime" value="IMG" />
    <attribute name="ebas_component" value="pm10_mass" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm10" />
    <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_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="No comments" />
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    <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>
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
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    <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="20180123000000" />
    <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_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_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="20180123000000" />
    <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_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_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>
