<?xml version="1.0" encoding="UTF-8"?>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2" location="Not provided because of security concerns.">
  <attribute name="Conventions" value="CF-1.7, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Ground based in situ observations of nephelometer at Cedar Bluff (US0038R)" />
  <attribute name="keywords" value="US0038R, volume_scattering_coefficient_in_air_due_to_dried_aerosol_particles, Cedar Bluff, aerosol_light_scattering_coefficient, aerosol, GAW-WDCA, IMPROVE" />
  <attribute name="id" value="US0038R.20040701060000.20181031145000.nephelometer..instrument.3y.1h.US11L_Optec-NGN-2.US11L_IMPROVE_nephelometer_2004.lev2.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="GAW-WDCA, IMPROVE" />
  <attribute name="acknowledgement" type="double" />
  <attribute name="license" value="GAW-WDCA: , IMPROVE: " />
  <attribute name="summary" value="Ground based in situ observations of nephelometer at Cedar Bluff (US0038R). These measurements are gathered as a part of the following projects GAW-WDCA, IMPROVE and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: aerosol_light_scattering_coefficient in aerosol (volume_scattering_coefficient_in_air_due_to_dried_aerosol_particles)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="US14O, United States Fish and Wildlife Service, Headquarters, USFWS, 1849 C Street NW, , 20240, Washington DC, USA" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2018-10-31T14:50:00 UTC" />
  <attribute name="date_metadata_modified" value="2018-10-31T14:50:00 UTC" />
  <attribute name="creator_name" value="Derek Day, Bret Schichtel" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value=", bret.schichtel@colostate.edu" />
  <attribute name="creator_institution" value=", &quot;Cooperative Institute for Research in the Atmosphere, CIRA&quot;" />
  <attribute name="contributor_name" value="Derek Day, William Malm" />
  <attribute name="contributor_role" value="data submitter, data submitter" />
  <attribute name="publisher_type" value="institution" />
  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_institution" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
  <attribute name="publisher_email" value="ebas@nilu.no" />
  <attribute name="publisher_url" value="https://www.nilu.no/" />
  <attribute name="geospatial_bounds" value="POINT Z (38.7701 -99.7634 665.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="38.7701" />
  <attribute name="geospatial_lat_max" type="double" value="38.7701" />
  <attribute name="geospatial_lon_min" type="double" value="-99.7634" />
  <attribute name="geospatial_lon_max" type="double" value="-99.7634" />
  <attribute name="geospatial_vertical_min" type="double" value="665.0" />
  <attribute name="geospatial_vertical_max" type="double" value="665.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2004-07-01T06:00:00 UTC" />
  <attribute name="time_coverage_end" value="2007-10-01T06:00:00 UTC" />
  <attribute name="time_coverage_duration" value="P0003-03-00T00:00:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-00T01:00:00" />
  <attribute name="timezone" value="UTC" />
  <attribute name="Metadata_Conventions" value="Unidata Dataset Discovery v1.0" />
  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
  <attribute name="comment" value="{&#xA;    &quot;Data definition&quot;: &quot;EBAS_1.1&quot;, &#xA;    &quot;Set type code&quot;: &quot;TU&quot;, &#xA;    &quot;Timezone&quot;: &quot;UTC&quot;, &#xA;    &quot;File name&quot;: &quot;US0038R.20040701060000.20181031145000.nephelometer..instrument.3y.1h.US11L_Optec-NGN-2.US11L_IMPROVE_nephelometer_2004.lev2.nc&quot;, &#xA;    &quot;File creation&quot;: &quot;20190514093742&quot;, &#xA;    &quot;Startdate&quot;: &quot;20040701060000&quot;, &#xA;    &quot;Revision date&quot;: &quot;20181031145000&quot;, &#xA;    &quot;Statistics&quot;: &quot;arithmetic mean&quot;, &#xA;    &quot;Data level&quot;: &quot;2&quot;, &#xA;    &quot;Period code&quot;: &quot;3y&quot;, &#xA;    &quot;Resolution code&quot;: &quot;1h&quot;, &#xA;    &quot;Station code&quot;: &quot;US0038R&quot;, &#xA;    &quot;Platform code&quot;: &quot;US0038S&quot;, &#xA;    &quot;Station name&quot;: &quot;Cedar Bluff&quot;, &#xA;    &quot;Station latitude&quot;: &quot;38.7701&quot;, &#xA;    &quot;Station longitude&quot;: &quot;-99.7634&quot;, &#xA;    &quot;Station altitude&quot;: &quot;665.0 m&quot;, &#xA;    &quot;Regime&quot;: &quot;IMG&quot;, &#xA;    &quot;Matrix&quot;: &quot;instrument&quot;, &#xA;    &quot;Laboratory code&quot;: &quot;US11L&quot;, &#xA;    &quot;Instrument type&quot;: &quot;nephelometer&quot;, &#xA;    &quot;Instrument name&quot;: &quot;Optec-NGN-2&quot;, &#xA;    &quot;Instrument manufacturer&quot;: &quot;Optech&quot;, &#xA;    &quot;Instrument model&quot;: &quot;NGN-2&quot;, &#xA;    &quot;Instrument serial number&quot;: &quot;113&quot;, &#xA;    &quot;Method ref&quot;: &quot;US11L_IMPROVE_nephelometer_2004&quot;, &#xA;    &quot;Organization&quot;: &quot;US14O, \&quot;United States Fish and Wildlife Service, Headquarters\&quot;, USFWS, , \&quot;1849 C Street NW, , 20240, Washington DC, USA\&quot;, , , , &quot;, &#xA;    &quot;Frameworks&quot;: &quot;GAW-WDCA IMPROVE&quot;, &#xA;    &quot;Originator&quot;: &quot;Schichtel, Bret, bret.schichtel@colostate.edu, Cooperative Institute for Research in the Atmosphere, CIRA, , Colorado State University, , 80523-1375, Fort Collins CO, &quot;, &#xA;    &quot;Submitter&quot;: &quot;Malm, William, , , , , , , , , &quot;&#xA;}" />
  <attribute name="standard_name_vocabulary" value="CF-1.7, ACDD-1.3" />
  <attribute name="history" value="None" />
  <attribute name="creator_url" value="ebas.nilu.no" />
  <attribute name="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="time" length="28488" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="4" />
  <dimension name="Location" length="1" />
  <dimension name="temperature_qc_flags" length="2" />
  <dimension name="Wavelength" length="1" />
  <dimension name="aerosol_light_scattering_coefficient_qc_flags" length="2" />
  <dimension name="relative_humidity_qc_flags" length="2" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2004-07-01T06:30:00Z" />
    <attribute name="time_coverage_end" value="2007-10-01T05:30:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="3600.0" />
    <attribute name="time_coverage_duration" value="P0Y0M1186DT23H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-07-16" />
    <attribute name="nciso_version" value="2.4.8" />
  </group>
  <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" />
  </variable>
  <variable name="temperature_qc" shape="Location temperature_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="missing_value" type="int" value="0" />
    <attribute name="units" value="1" />
  </variable>
  <variable name="relative_humidity" shape="Location time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="relative_humidity" />
    <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" />
  </variable>
  <variable name="aerosol_light_scattering_coefficient" shape="Wavelength time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="volume_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="aerosol_light_scattering_coefficient_qc aerosol_light_scattering_coefficient_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
  </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_scattering_coefficient_qc" shape="Wavelength aerosol_light_scattering_coefficient_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_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="aerosol_light_scattering_coefficient_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="cell_methods" value="mean" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="time_bnds" shape="time tbnds" type="double">
    <attribute name="long_name" value="time bounds for measurement" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="_CoordinateAxisType" value="Time" />
    <attribute name="calendar" value="gregorian" />
  </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="cell_methods" value="mean" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="metadata_time_bnds" shape="metadata_time tbnds" type="double">
    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
    <attribute name="standard_name" value="time" />
    <attribute name="units" value="days since 1900-01-01 00:00:00 UTC" />
    <attribute name="calendar" value="gregorian" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="Location" shape="Location" type="String" />
  <variable name="Wavelength" shape="Wavelength" type="double" />
</netcdf>
