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  <attribute name="title" value="Ground based in situ observations of aerosol_absorption_coefficient at Appalachian State University, Boone (NC) (US3446C) using filter_absorption_photometer" />
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  <attribute name="doi" value="https://doi.org/10.48597/KN2P-HNM9" />
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  <attribute name="citation" value="James Sherman, aerosol_absorption_coefficient - filter_absorption_photometer at Appalachian State University, Boone (NC), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/KN2P-HNM9" />
  <attribute name="summary" value="Ground based in situ observations of aerosol_absorption_coefficient at Appalachian State University, Boone (NC) (US3446C) using filter_absorption_photometer. 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: aerosol_absorption_coefficient in pm1, aerosol_absorption_coefficient in pm1, aerosol_absorption_coefficient in pm1" />
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    <attribute name="ebas_standard_method" value="Single-angle_Correction=Bond1999_Ogren2010" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Switched impactor at 1 um" />
    <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" />
    <attribute name="ebas_organization" value="US10L, &quot;Appalachian State University, AppalAIR, Appalachian Atmospheric Interdisciplinary Research Facility&quot;, AppalAIR, , &quot;c/o James Sherman - CAP Building Room 325, CAP Building Room 325, 28608, Boone NC, United States&quot;, , , , " />
    <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="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="Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Sherman, James, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Sherman, James, , , , , , , , , " />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Standard Bond et al. 1999 values for K1 and K2 used at all wavelengths" />
  </variable>
  <variable name="aerosol_absorption_coefficient_prec1587_qc" shape="Wavelength aerosol_absorption_coefficient_prec1587_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_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_absorption_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_absorption_coefficient_perc8413_qc aerosol_absorption_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="20200125225013" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by CPD3 EBAS Export v24-107-g015cb29-m run as da.output.upload (10315) run by aerosol on aero2-new.cmdl.noaa.gov via da.output.upload --after=undef --profile=ebas --quiet app" />
    <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="US3446C" />
    <attribute name="ebas_platform_code" value="US3446S" />
    <attribute name="ebas_station_name" value="Appalachian State University, Boone (NC)" />
    <attribute name="ebas_station_latitude" value="36.2" />
    <attribute name="ebas_station_longitude" value="-81.7" />
    <attribute name="ebas_station_altitude" value="1100.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="36.213001" />
    <attribute name="ebas_measurement_longitude" value="-81.692001" />
    <attribute name="ebas_measurement_altitude" value="1076.0 m" />
    <attribute name="ebas_measurement_height" value="10.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm1" />
    <attribute name="ebas_laboratory_code" value="US10L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="RadianceResearch_PSAP-3W_APP_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="Radiance-Research" />
    <attribute name="ebas_instrument_model" value="PSAP-3W" />
    <attribute name="ebas_instrument_serial_number" value="46" />
    <attribute name="ebas_method_ref" value="US10L_abs_coef" />
    <attribute name="ebas_standard_method" value="Single-angle_Correction=Bond1999_Ogren2010" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Switched impactor at 1 um" />
    <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" />
    <attribute name="ebas_organization" value="US10L, &quot;Appalachian State University, AppalAIR, Appalachian Atmospheric Interdisciplinary Research Facility&quot;, AppalAIR, , &quot;c/o James Sherman - CAP Building Room 325, CAP Building Room 325, 28608, Boone NC, United States&quot;, , , , " />
    <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="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="Markus Fiebig, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="Sherman, James, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Sherman, James, , , , , , , , , " />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Standard Bond et al. 1999 values for K1 and K2 used at all wavelengths" />
  </variable>
  <variable name="aerosol_absorption_coefficient_perc8413_qc" shape="Wavelength aerosol_absorption_coefficient_perc8413_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_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" />
  </variable>
  <variable name="metadata_time" shape="metadata_time" type="double">
    <attribute name="long_name" value="time of ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="Wavelength" shape="Wavelength" type="double" />
</netcdf>
