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  <attribute name="title" value="Ground based in situ observations of filter_absorption_photometer at Annaberg-Buchholz (DE0061B)" />
  <attribute name="keywords" value="GAW-WDCA, pm10, GUAN, Annaberg-Buchholz, DE0061B, aerosol_absorption_coefficient" />
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  <attribute name="project" value="GAW-WDCA, GUAN" />
  <attribute name="acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="doi" value="https://doi.org/10.48597/R6Y8-JTUA" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Alexander Schladitz, Gunter Loeschau, aerosol_absorption_coefficient - filter_absorption_photometer at Annaberg-Buchholz, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/R6Y8-JTUA" />
  <attribute name="summary" value="Ground based in situ observations of filter_absorption_photometer at Annaberg-Buchholz (DE0061B). These measurements are gathered as a part of the following projects GAW-WDCA, GUAN and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: aerosol_absorption_coefficient in pm10, aerosol_absorption_coefficient in pm10, aerosol_absorption_coefficient in pm10" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="DE16L, HelmholtzZentrum Muenchen (HMGU)" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2019-02-13T09:33:06 UTC" />
  <attribute name="date_metadata_modified" value="2019-02-13T09:33:06 UTC" />
  <attribute name="creator_name" value="Alexander Schladitz, Gunter Loeschau" />
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  <attribute name="contributor_name" value="Alexander Schladitz" />
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  <attribute name="publisher_type" value="institution" />
  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
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  <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Ann Mari Fjaeraa" />
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  <attribute name="ebas_submitter" value="Schladitz, Alexander, , , , , , , , , " />
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  <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;Alexander Schladitz, Gunter Loeschau, aerosol_absorption_coefficient - filter_absorption_photometer at Annaberg-Buchholz, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/R6Y8-JTUA&quot;,&#xA;    &quot;Set type code&quot;: &quot;TU&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;R6Y8-JTUA.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/R6Y8-JTUA&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/R6Y8-JTUA&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-12-10T10:21:10.892507 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2016-01-09T00:30:51.467000 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20130101000000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20190213093306&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;initial revision, TechVal+EndVal_MAAP v.1.2.2.33&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;1y&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1h&quot;,&#xA;    &quot;Sample duration&quot;: &quot;1h&quot;,&#xA;    &quot;Orig. time res.&quot;: &quot;1mn&quot;,&#xA;    &quot;Station code&quot;: &quot;DE0061B&quot;,&#xA;    &quot;Platform code&quot;: &quot;DE0061S&quot;,&#xA;    &quot;Station name&quot;: &quot;Annaberg-Buchholz&quot;,&#xA;    &quot;Station latitude&quot;: &quot;50.571667&quot;,&#xA;    &quot;Station longitude&quot;: &quot;12.998889&quot;,&#xA;    &quot;Station altitude&quot;: &quot;545.0 m&quot;,&#xA;    &quot;Measurement latitude&quot;: &quot;50.57&quot;,&#xA;    &quot;Measurement longitude&quot;: &quot;13.0&quot;,&#xA;    &quot;Measurement altitude&quot;: &quot;545.0 m&quot;,&#xA;    &quot;Measurement height&quot;: &quot;4.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;DE16L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;filter_absorption_photometer&quot;,&#xA;    &quot;Instrument name&quot;: &quot;MAAP_LfULG_Annaberg-Buchholz&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;Thermo&quot;,&#xA;    &quot;Instrument model&quot;: &quot;5012&quot;,&#xA;    &quot;Instrument serial number&quot;: &quot;236&quot;,&#xA;    &quot;Method ref&quot;: &quot;DE16L_TechVal+EndVal_MAAP_v.1.2.2.33&quot;,&#xA;    &quot;Standard method&quot;: &quot;Multi-angle_Correction=Petzold2004&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Impactor--direct&quot;,&#xA;    &quot;Inlet description&quot;: &quot;PM1 cyclone, flow 16.67 l/min&quot;,&#xA;    &quot;Humidity/temperature control&quot;: &quot;Nafion dryer&quot;,&#xA;    &quot;Humidity/temperature control description&quot;: &quot;sample dried to below 40% RH with set of nafion dryers&quot;,&#xA;    &quot;Volume std. temperature&quot;: &quot;273.15 K&quot;,&#xA;    &quot;Volume std. pressure&quot;: &quot;1013.25 hPa&quot;,&#xA;    &quot;Measurement uncertainty expl.&quot;: &quot;typical value of unit-to-unit variability&quot;,&#xA;    &quot;Zero/negative values code&quot;: &quot;Zero/negative possible&quot;,&#xA;    &quot;Zero/negative values&quot;: &quot;Zero and neg. values may appear due to statistical variations at very low concentrations&quot;,&#xA;    &quot;Organization&quot;: &quot;DE16L, HelmholtzZentrum Muenchen (HMGU), , , , , , , &quot;,&#xA;    &quot;Framework acronym&quot;: &quot;GAW-WDCA, GUAN&quot;,&#xA;    &quot;Framework name&quot;: &quot;World Data Centre for Aerosols, German Ultrafine Aerosol Networ&quot;,&#xA;    &quot;Framework description&quot;: &quot;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., GUAN is a joint observation network, which aims to improve our understanding of atmospheric aerosol particles with regard to human particle exposure and aerosol climate effects.&quot;,&#xA;    &quot;Framework contact name&quot;: &quot;Markus Fiebig, Ann Mari Fjaeraa&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;Markus.Fiebig@nilu.no, amf@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Loeschau, Gunter, , , , , , , , , &quot;,&#xA;    &quot;Submitter&quot;: &quot;Schladitz, Alexander, , , , , , , , , &quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;Request acknowledgement details from data originator&quot;,&#xA;    &quot;Comment&quot;: &quot;None&quot;&#xA;}" />
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    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, German Ultrafine Aerosol Networ" />
    <attribute name="ebas_framework_description" value="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., GUAN is a joint observation network, which aims to improve our understanding of atmospheric aerosol particles with regard to human particle exposure and aerosol climate effects." />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Ann Mari Fjaeraa" />
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    <attribute name="ebas_originator" value="Loeschau, Gunter, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Schladitz, Alexander, , , , , , , , , " />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="temperature_qc" shape="temperature_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="temperature_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_absorption_coefficient_amean" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="aerosol_absorption_coefficient_amean_qc aerosol_absorption_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="20190213093306" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, TechVal+EndVal_MAAP v.1.2.2.33" />
    <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="DE0061B" />
    <attribute name="ebas_platform_code" value="DE0061S" />
    <attribute name="ebas_station_name" value="Annaberg-Buchholz" />
    <attribute name="ebas_station_latitude" value="50.571667" />
    <attribute name="ebas_station_longitude" value="12.998889" />
    <attribute name="ebas_station_altitude" value="545.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="50.57" />
    <attribute name="ebas_measurement_longitude" value="13.0" />
    <attribute name="ebas_measurement_altitude" value="545.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
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    <attribute name="ebas_matrix" value="pm10" />
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    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="MAAP_LfULG_Annaberg-Buchholz" />
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    <attribute name="ebas_inlet_description" value="PM1 cyclone, flow 16.67 l/min" />
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    <attribute name="ebas_detection_limit_expl" value="Determined by instrument noise characteristics, no detection limit flag used" />
    <attribute name="ebas_measurement_uncertainty" value="6.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="typical value of unit-to-unit variability" />
    <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="DE16L, HelmholtzZentrum Muenchen (HMGU), , , , , , , " />
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    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, German Ultrafine Aerosol Networ" />
    <attribute name="ebas_framework_description" value="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., GUAN is a joint observation network, which aims to improve our understanding of atmospheric aerosol particles with regard to human particle exposure and aerosol climate effects." />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Ann Mari Fjaeraa" />
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    <attribute name="ebas_originator" value="Loeschau, Gunter, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Schladitz, Alexander, , , , , , , , , " />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="None" />
  </variable>
  <variable name="aerosol_absorption_coefficient_amean_qc" shape="aerosol_absorption_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_absorption_coefficient_amean_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_absorption_coefficient_prec1587" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="aerosol_absorption_coefficient_prec1587_qc aerosol_absorption_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/" />
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    <attribute name="ebas_version_description" value="initial revision, TechVal+EndVal_MAAP v.1.2.2.33" />
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    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="DE0061B" />
    <attribute name="ebas_platform_code" value="DE0061S" />
    <attribute name="ebas_station_name" value="Annaberg-Buchholz" />
    <attribute name="ebas_station_latitude" value="50.571667" />
    <attribute name="ebas_station_longitude" value="12.998889" />
    <attribute name="ebas_station_altitude" value="545.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="50.57" />
    <attribute name="ebas_measurement_longitude" value="13.0" />
    <attribute name="ebas_measurement_altitude" value="545.0 m" />
    <attribute name="ebas_measurement_height" value="4.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
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    <attribute name="ebas_matrix" value="pm10" />
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    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="MAAP_LfULG_Annaberg-Buchholz" />
    <attribute name="ebas_instrument_manufacturer" value="Thermo" />
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    <attribute name="ebas_instrument_serial_number" value="236" />
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    <attribute name="ebas_inlet_description" value="PM1 cyclone, flow 16.67 l/min" />
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    <attribute name="ebas_measurement_uncertainty" value="6.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="typical value of unit-to-unit variability" />
    <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_contact_name" value="Markus Fiebig, Ann Mari Fjaeraa" />
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    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
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  <variable name="aerosol_absorption_coefficient_prec1587_qc" shape="aerosol_absorption_coefficient_prec1587_qc_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
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  </variable>
  <variable name="aerosol_absorption_coefficient_prec1587_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_absorption_coefficient_perc8413" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="cell_methods" value="time: percentile:84.13" />
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    <attribute name="ebas_orig_time_res" value="1mn" />
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    <attribute name="ebas_station_altitude" value="545.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="50.57" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
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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_acknowledgement" value="Request acknowledgement details from data originator" />
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  <variable name="aerosol_absorption_coefficient_perc8413_qc" shape="aerosol_absorption_coefficient_perc8413_qc_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="aerosol_absorption_coefficient_perc8413_ebasmetadata" shape="metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="time" shape="time" type="double">
    <attribute name="long_name" value="time of measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
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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" />
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</netcdf>
