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  <attribute name="title" value="Aerosol light scattering at Hyytiälä" />
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  <attribute name="doi" value="https://doi.org/10.48597/MGY8-TAYY" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Kulmala, M., Petaja, T., Virkkula, A., Luoma, K., Petäjä, T., ACTRIS, GAW-WDCA, NOAA-ESRL, 2025, Aerosol light scattering at Hyytiälä, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/MGY8-TAYY" />
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  <attribute name="date_created" value="2025-07-28T08:59:42 UTC" />
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  <attribute name="creator_name" value="Markku Kulmala, Tuukka Petaja, Aki Virkkula, Krista Luoma, Tuukka Petäjä" />
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  <attribute name="contributor_name" value="Krista Luoma" />
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  <attribute name="ebas_originator" value="Petäjä, Tuukka, tuukka.petaja@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
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ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., 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;Cathrine Lund Myhre, Markus Fiebig, Markus Fiebig&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;clm@nilu.no, Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Petäjä, Tuukka, tuukka.petaja@helsinki.fi, University of Helsinki, UHEL, \&quot;Division of Atmospheric Sciences, Department of Physics\&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland&quot;,&#xA;    &quot;Submitter&quot;: &quot;Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, \&quot;Division of Atmospheric Sciences, Department of Physics\&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland&quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator&quot;&#xA;}" />
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    <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="20250728085942" />
    <attribute name="ebas_version" value="1" />
    <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="1mn" />
    <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_measurement_latitude" value="61.847384" />
    <attribute name="ebas_measurement_longitude" value="24.29478" />
    <attribute name="ebas_measurement_altitude" value="181.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 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="FI03L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="TSI_3563_SMR_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3563" />
    <attribute name="ebas_instrument_serial_number" value="70539059" />
    <attribute name="ebas_method_ref" value="FI03L_scat_coef" />
    <attribute name="ebas_standard_method" value="cal-gas=CO2+AIR_truncation-correction=Anderson1998" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_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="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="ACTRIS, GAW-WDCA, NOAA-ESRL" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., 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="Cathrine Lund Myhre, Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Petäjä, Tuukka, tuukka.petaja@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <attribute name="ebas_submitter" value="Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="relative_humidity_qc" shape="Location 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="Location metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="temperature" shape="Location 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="20250728085942" />
    <attribute name="ebas_version" value="1" />
    <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="1mn" />
    <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_measurement_latitude" value="61.847384" />
    <attribute name="ebas_measurement_longitude" value="24.29478" />
    <attribute name="ebas_measurement_altitude" value="181.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 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="FI03L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="TSI_3563_SMR_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3563" />
    <attribute name="ebas_instrument_serial_number" value="70539059" />
    <attribute name="ebas_method_ref" value="FI03L_scat_coef" />
    <attribute name="ebas_standard_method" value="cal-gas=CO2+AIR_truncation-correction=Anderson1998" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_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="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="ACTRIS, GAW-WDCA, NOAA-ESRL" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., 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="Cathrine Lund Myhre, Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Petäjä, Tuukka, tuukka.petaja@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <attribute name="ebas_submitter" value="Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="temperature_qc" shape="Location 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="Location metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_light_backscattering_coefficient_amean" shape="Wavelength 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_light_backscattering_coefficient_amean_qc aerosol_light_backscattering_coefficient_amean_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="20250728085942" />
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    <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="1mn" />
    <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_measurement_latitude" value="61.847384" />
    <attribute name="ebas_measurement_longitude" value="24.29478" />
    <attribute name="ebas_measurement_altitude" value="181.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_light_backscattering_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm1" />
    <attribute name="ebas_laboratory_code" value="FI03L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="TSI_3563_SMR_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3563" />
    <attribute name="ebas_instrument_serial_number" value="70539059" />
    <attribute name="ebas_method_ref" value="FI03L_scat_coef" />
    <attribute name="ebas_standard_method" value="cal-gas=CO2+AIR_truncation-correction=Anderson1998" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_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="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="ACTRIS, GAW-WDCA, NOAA-ESRL" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., 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="Cathrine Lund Myhre, Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Petäjä, Tuukka, tuukka.petaja@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <attribute name="ebas_submitter" value="Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="aerosol_light_backscattering_coefficient_amean_qc" shape="Wavelength aerosol_light_backscattering_coefficient_amean_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_light_backscattering_coefficient_amean_ebasmetadata" shape="Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_light_backscattering_coefficient_prec1587" shape="Wavelength 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_light_backscattering_coefficient_prec1587_qc aerosol_light_backscattering_coefficient_prec1587_ebasmetadata" />
    <attribute name="cell_methods" value="time: percentile:15.87" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20250728085942" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_statistics" value="percentile:15.87" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <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_measurement_latitude" value="61.847384" />
    <attribute name="ebas_measurement_longitude" value="24.29478" />
    <attribute name="ebas_measurement_altitude" value="181.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_light_backscattering_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm1" />
    <attribute name="ebas_laboratory_code" value="FI03L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="TSI_3563_SMR_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3563" />
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    <attribute name="ebas_standard_method" value="cal-gas=CO2+AIR_truncation-correction=Anderson1998" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_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="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="ACTRIS, GAW-WDCA, NOAA-ESRL" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., 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="Cathrine Lund Myhre, Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
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    <attribute name="ebas_submitter" value="Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="aerosol_light_backscattering_coefficient_prec1587_qc" shape="Wavelength aerosol_light_backscattering_coefficient_prec1587_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="aerosol_light_backscattering_coefficient_prec1587_ebasmetadata" shape="Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_light_backscattering_coefficient_perc8413" shape="Wavelength 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_light_backscattering_coefficient_perc8413_qc aerosol_light_backscattering_coefficient_perc8413_ebasmetadata" />
    <attribute name="cell_methods" value="time: percentile:84.13" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20250728085942" />
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    <attribute name="ebas_statistics" value="percentile:84.13" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <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_measurement_latitude" value="61.847384" />
    <attribute name="ebas_measurement_longitude" value="24.29478" />
    <attribute name="ebas_measurement_altitude" value="181.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_light_backscattering_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm1" />
    <attribute name="ebas_laboratory_code" value="FI03L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="TSI_3563_SMR_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3563" />
    <attribute name="ebas_instrument_serial_number" value="70539059" />
    <attribute name="ebas_method_ref" value="FI03L_scat_coef" />
    <attribute name="ebas_standard_method" value="cal-gas=CO2+AIR_truncation-correction=Anderson1998" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_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="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="ACTRIS, GAW-WDCA, NOAA-ESRL" />
    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., 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="Cathrine Lund Myhre, Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Petäjä, Tuukka, tuukka.petaja@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <attribute name="ebas_submitter" value="Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="aerosol_light_backscattering_coefficient_perc8413_qc" shape="Wavelength aerosol_light_backscattering_coefficient_perc8413_qc_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
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  <variable name="aerosol_light_backscattering_coefficient_perc8413_ebasmetadata" shape="Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_light_scattering_coefficient_amean" shape="Wavelength 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_light_scattering_coefficient_amean_qc aerosol_light_scattering_coefficient_amean_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="20250728085942" />
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    <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="1mn" />
    <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_measurement_latitude" value="61.847384" />
    <attribute name="ebas_measurement_longitude" value="24.29478" />
    <attribute name="ebas_measurement_altitude" value="181.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_light_scattering_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm1" />
    <attribute name="ebas_laboratory_code" value="FI03L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="TSI_3563_SMR_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
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    <attribute name="ebas_instrument_serial_number" value="70539059" />
    <attribute name="ebas_method_ref" value="FI03L_scat_coef" />
    <attribute name="ebas_standard_method" value="cal-gas=CO2+AIR_truncation-correction=Anderson1998" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_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" />
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    <attribute name="ebas_framework_name" value="European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases, World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre., 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="Cathrine Lund Myhre, Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Petäjä, Tuukka, tuukka.petaja@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <attribute name="ebas_submitter" value="Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="aerosol_light_scattering_coefficient_amean_qc" shape="Wavelength aerosol_light_scattering_coefficient_amean_qc_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
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  </variable>
  <variable name="aerosol_light_scattering_coefficient_amean_ebasmetadata" shape="Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_light_scattering_coefficient_prec1587" shape="Wavelength 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_light_scattering_coefficient_prec1587_qc aerosol_light_scattering_coefficient_prec1587_ebasmetadata" />
    <attribute name="cell_methods" value="time: percentile:15.87" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20250728085942" />
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    <attribute name="ebas_statistics" value="percentile:15.87" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <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_measurement_latitude" value="61.847384" />
    <attribute name="ebas_measurement_longitude" value="24.29478" />
    <attribute name="ebas_measurement_altitude" value="181.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_light_scattering_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm1" />
    <attribute name="ebas_laboratory_code" value="FI03L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="TSI_3563_SMR_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
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    <attribute name="ebas_humidity_temperaure_control" value="Nafion dryer" />
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    <attribute name="ebas_zero_negative_values" value="Zero and neg. values may appear due to statistical variations at very low concentrations" />
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    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig, Markus Fiebig" />
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    <attribute name="ebas_submitter" value="Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="aerosol_light_scattering_coefficient_prec1587_qc" shape="Wavelength aerosol_light_scattering_coefficient_prec1587_qc_flags time" type="int">
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  <variable name="aerosol_light_scattering_coefficient_prec1587_ebasmetadata" shape="Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_light_scattering_coefficient_perc8413" shape="Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
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    <attribute name="ebas_statistics" value="percentile:84.13" />
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    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
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    <attribute name="ebas_station_land_use" value="Forest" />
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    <attribute name="ebas_station_longitude" value="24.283333" />
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    <attribute name="ebas_component" value="aerosol_light_scattering_coefficient" />
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    <attribute name="ebas_submitter" value="Luoma, Krista, krista.q.luoma@helsinki.fi, University of Helsinki, UHEL, &quot;Division of Atmospheric Sciences, Department of Physics&quot;, PO BOX 64, , FI-00014, University of Helsinki, Finland" />
    <attribute name="ebas_acknowledgement" value="Data used in this &lt;study/report/figure/etc.&gt; were accessed from EBAS (https://ebas.nilu.no) hosted by NILU. Specifically, the use included data affiliated with the frameworks: ACTRIS, GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  </variable>
  <variable name="aerosol_light_scattering_coefficient_perc8413_qc" shape="Wavelength aerosol_light_scattering_coefficient_perc8413_qc_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
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  <variable name="aerosol_light_scattering_coefficient_perc8413_ebasmetadata" shape="Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
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  <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>
  <variable name="Location" shape="Location" type="String" />
  <variable name="Wavelength" shape="Wavelength" type="double" />
</netcdf>
