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  <attribute name="title" value="Aerosol light scattering at Mauna Loa" />
  <attribute name="summary" value="Aerosol light scattering at Mauna Loa. These measurements are gathered as a part of the following projects GAW-WDCA, NOAA-ESRL and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: ['pressure in instrument', 'relative_humidity in instrument (relative_humidity)', 'temperature in instrument', 'aerosol_light_backscattering_coefficient in aerosol (volume_backwards_scattering_coefficient_in_air_due_to_dried_aerosol_particles)', 'aerosol_light_scattering_coefficient in aerosol (volume_scattering_coefficient_in_air_due_to_dried_aerosol_particles)']" />
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  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/AEFZ-E6P7" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Andrews, B., GAW-WDCA, NOAA-ESRL, 2026, Aerosol light scattering at Mauna Loa, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/AEFZ-E6P7" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="US06L &quot;National Oceanic and Atmospheric Administration&quot; NOAA/GML &quot;Global Monitoring Laboratory&quot; &quot;325 Broadway&quot; &quot;CO 80305-3&quot; Boulder U.S.A." />
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  <attribute name="date_created" value="2026-02-09T14:15:40.761674Z" />
  <attribute name="date_metadata_modified" value="2026-02-09T14:15:40Z" />
  <attribute name="creator_name" value="Betsy Andrews" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="betsy.andrews@noaa.gov" />
  <attribute name="creator_institution" value="&quot;National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD&quot;" />
  <attribute name="contributor_name" value="Betsy Andrews" />
  <attribute name="contributor_role" value="data submitter" />
  <attribute name="publisher_type" value="institution" />
  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_institution" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_email" value="ebas@nilu.no" />
  <attribute name="publisher_url" value="https://www.nilu.no/" />
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  <attribute name="timezone" value="UTC" />
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  <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="ebas_citation" value="Andrews, B., GAW-WDCA, NOAA-ESRL, 2026, Aerosol light scattering at Mauna Loa, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/AEFZ-E6P7" />
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  <attribute name="ebas_station_name" value="Mauna Loa" />
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  <attribute name="ebas_station_gaw_id" value="MLO" />
  <attribute name="ebas_station_gaw_name" value="Mauna Loa (HI)" />
  <attribute name="ebas_station_land_use" value="Gravel and stone" />
  <attribute name="ebas_station_setting" value="Mountain" />
  <attribute name="ebas_station_gaw_type" value="G" />
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  <attribute name="ebas_measurement_altitude" value="3397.0 m" />
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  <attribute name="ebas_instrument_manufacturer" value="TSI" />
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  <attribute name="ebas_inlet_type" value="Hat or hood" />
  <attribute name="ebas_humidity_temperaure_control" value="Heating to 40% RH, limit 40 deg. C" />
  <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_acronym" value="GAW-WDCA, NOAA-ESRL" />
  <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, " />
  <attribute name="ebas_framework_description" value="&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.&quot;, " />
  <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;&quot;Boulder, CO&quot;&quot;, USA&quot;" />
  <attribute name="ebas_submitter" value="&quot;Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;&quot;Boulder, CO&quot;&quot;, USA&quot;" />
  <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: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
  <attribute name="ebas_comment" value="Standard Anderson &amp; Ogren 1998 values used for truncation correction" />
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  <attribute name="history" value="None" />
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  <dimension name="d_Location" length="1" />
  <dimension name="qc_pressure_flags" length="1" />
  <dimension name="qc_relative_humidity_flags" length="1" />
  <dimension name="qc_temperature_flags" length="1" />
  <dimension name="d_Wavelength" length="3" />
  <dimension name="qc_aerosol_light_backscattering_coefficient_amean_flags" length="1" />
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    <attribute name="time_coverage_start" value="2024-01-01T00:30:00Z" />
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    <attribute name="metadata_creation" value="2026-06-05" />
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    <attribute name="long_name" value="time bounds for measurement" />
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    <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="missing_value" type="double" value="NaN" />
    <attribute name="units" value="hPa" />
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    <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="2026-02-09T14:15:40.761674Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by Forge 1.0.5 and EBAS-IO V.4.04.00" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
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    <attribute name="ebas_station_setting" value="Mountain" />
    <attribute name="ebas_station_gaw_type" value="G" />
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    <attribute name="ebas_component" value="pressure" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
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    <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="World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="&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.&quot;, " />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Markus Fiebig" />
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    <attribute name="ebas_submitter" value="&quot;Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;&quot;Boulder, CO&quot;&quot;, USA&quot;" />
    <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: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Standard Anderson &amp; Ogren 1998 values used for truncation correction" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_measurement_latitude" type="double" value="19.5362300873" />
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    <attribute name="ebas_measurement_altitude" value="3397.0 m" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="relative_humidity" />
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    <attribute name="ebas_matrix" value="instrument" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
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    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, " />
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    <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Markus Fiebig" />
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    <attribute name="ebas_originator" value="&quot;Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;&quot;Boulder, CO&quot;&quot;, USA&quot;" />
    <attribute name="ebas_submitter" value="&quot;Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;&quot;Boulder, CO&quot;&quot;, USA&quot;" />
    <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: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Standard Anderson &amp; Ogren 1998 values used for truncation correction" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="_FillValue" type="double" value="NaN" />
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    <attribute name="units" value="K" />
    <attribute name="ancillary_variables" value="qc_temperature meta_temperature" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2026-02-09T14:15:40.761674Z" />
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    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by Forge 1.0.5 and EBAS-IO V.4.04.00" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_station_code" value="US1200R" />
    <attribute name="ebas_platform_code" value="US1200S" />
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    <attribute name="ebas_station_setting" value="Mountain" />
    <attribute name="ebas_station_gaw_type" value="G" />
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    <attribute name="ebas_station_altitude" value="3397.0 m" />
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    <attribute name="ebas_measurement_altitude" value="3397.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="temperature" />
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    <attribute name="ebas_matrix" value="instrument" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
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    <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="US06L, National Oceanic and Atmospheric Administration, NOAA/GML, Global Monitoring Laboratory, 325 Broadway, , CO 80305-3, Boulder, U.S.A." />
    <attribute name="ebas_framework_acronym" value="GAW-WDCA, NOAA-ESRL" />
    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, " />
    <attribute name="ebas_framework_description" value="&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.&quot;, " />
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    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;&quot;Boulder, CO&quot;&quot;, USA&quot;" />
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    <attribute name="ebas_comment" value="Standard Anderson &amp; Ogren 1998 values used for truncation correction" />
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    <attribute name="units" value="1" />
  </variable>
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_aerosol_light_backscattering_coefficient_amean" shape="d_Wavelength time" type="double">
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    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="qc_aerosol_light_backscattering_coefficient_amean meta_aerosol_light_backscattering_coefficient_amean" />
    <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="2026-02-09T14:15:40.761674Z" />
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    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by Forge 1.0.5 and EBAS-IO V.4.04.00" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_station_code" value="US1200R" />
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    <attribute name="ebas_station_name" value="Mauna Loa" />
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    <attribute name="ebas_station_setting" value="Mountain" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" type="long" value="5" />
    <attribute name="ebas_station_latitude" type="double" value="19.5362300873" />
    <attribute name="ebas_station_longitude" type="double" value="-155.5761566162" />
    <attribute name="ebas_station_altitude" value="3397.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="19.5362300873" />
    <attribute name="ebas_measurement_longitude" type="double" value="-155.5761566162" />
    <attribute name="ebas_measurement_altitude" value="3397.0 m" />
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    <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="aerosol" />
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    <attribute name="ebas_standard_method" value="cal-gas=CO2+AIR_truncation-correction=Anderson1998" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
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    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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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_submitter" value="&quot;Andrews, Betsy, betsy.andrews@noaa.gov, National Oceanic and Atmospheric Administration/Earth System Research Laboratory/Global Monitoring Division, NOAA/ESRL/GMD, , 325 Broadway, , 80305, &quot;&quot;Boulder, CO&quot;&quot;, USA&quot;" />
    <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: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Standard Anderson &amp; Ogren 1998 values used for truncation correction" />
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    <attribute name="actris_variable_preferred_term" value="aerosol particle light hemispheric backscatter coefficient" />
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    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
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    <attribute name="actris_framework_preferred_term" value="GAW-WDCA, NOAA-ESRL" />
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    <attribute name="actris_access_restriction" type="long" value="0" />
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  <variable name="qc_aerosol_light_backscattering_coefficient_amean" shape="d_Wavelength qc_aerosol_light_backscattering_coefficient_amean_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="units" value="1" />
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  <variable name="meta_aerosol_light_backscattering_coefficient_amean" shape="d_Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_aerosol_light_backscattering_coefficient_prec1587" shape="d_Wavelength time" type="double">
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    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ancillary_variables" value="qc_aerosol_light_backscattering_coefficient_prec1587 meta_aerosol_light_backscattering_coefficient_prec1587" />
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    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by Forge 1.0.5 and EBAS-IO V.4.04.00" />
    <attribute name="ebas_statistics" value="percentile:15.87" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
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    <attribute name="ebas_station_latitude" type="double" value="19.5362300873" />
    <attribute name="ebas_station_longitude" type="double" value="-155.5761566162" />
    <attribute name="ebas_station_altitude" value="3397.0 m" />
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    <attribute name="ebas_measurement_altitude" value="3397.0 m" />
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    <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="aerosol" />
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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_description" value="&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.&quot;, " />
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    <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: GAW-WDCA, NOAA-ESRL. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Standard Anderson &amp; Ogren 1998 values used for truncation correction" />
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    <attribute name="actris_variable_preferred_term" value="aerosol particle light hemispheric backscatter coefficient" />
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    <attribute name="actris_access_restriction" type="long" value="0" />
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    <attribute name="_FillValue" type="int" value="0" />
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    <attribute name="units" value="1" />
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  <variable name="meta_aerosol_light_backscattering_coefficient_prec1587" shape="d_Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_aerosol_light_backscattering_coefficient_perc8413" shape="d_Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="volume_backwards_scattering_coefficient_in_air_due_to_dried_aerosol_particles" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="1/Mm" />
    <attribute name="ancillary_variables" value="qc_aerosol_light_backscattering_coefficient_perc8413 meta_aerosol_light_backscattering_coefficient_perc8413" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="2026-02-09T14:15:40.761674Z" />
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    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by Forge 1.0.5 and EBAS-IO V.4.04.00" />
    <attribute name="ebas_statistics" value="percentile:84.13" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
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    <attribute name="ebas_station_wmo_region" type="long" value="5" />
    <attribute name="ebas_station_latitude" type="double" value="19.5362300873" />
    <attribute name="ebas_station_longitude" type="double" value="-155.5761566162" />
    <attribute name="ebas_station_altitude" value="3397.0 m" />
    <attribute name="ebas_measurement_latitude" type="double" value="19.5362300873" />
    <attribute name="ebas_measurement_longitude" type="double" value="-155.5761566162" />
    <attribute name="ebas_measurement_altitude" value="3397.0 m" />
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    <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="aerosol" />
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    <attribute name="ebas_inlet_type" value="Hat or hood" />
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    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="calendar" value="standard" />
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</netcdf>
