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  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Aerosol_light_scattering_coefficient at Shenandoah National Park-Big Meadows (VA28)" />
  <attribute name="summary" value="Aerosol_light_scattering_coefficient at Shenandoah National Park-Big Meadows (VA28). These measurements are gathered as a part of the following projects IMPROVE 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_scattering_coefficient in aerosol (volume_scattering_coefficient_in_air_due_to_dried_aerosol_particles)']" />
  <attribute name="keywords" value="&quot;Shenandoah National Park-Big Meadows (VA28)&quot; US4828R aerosol_light_scattering_coefficient aerosol IMPROVE relative_humidity volume_scattering_coefficient_in_air_due_to_dried_aerosol_particles" />
  <attribute name="id" value="2Y3A-EEQV.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="IMPROVE" />
  <attribute name="acknowledgement" value="" />
  <attribute name="doi" value="https://doi.org/10.48597/2Y3A-EEQV" />
  <attribute name="license" value="Various, see detailed metadata" />
  <attribute name="citation" value="Day, D., Schichtel, B., IMPROVE, 2016, Aerosol_light_scattering_coefficient at Shenandoah National Park-Big Meadows (VA28), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/2Y3A-EEQV" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="US12O &quot;National Park Service, Headquarters&quot; NPS &quot;1849 C Street NW, , 20240, Washington DC, USA&quot;" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2016-06-20T13:06:20.777000Z" />
  <attribute name="date_metadata_modified" value="2016-06-20T13:06:20Z" />
  <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 (-78.4358 38.5225 1074)" />
  <attribute name="geospatial_lat_min" type="double" value="38.5225" />
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  <attribute name="geospatial_lon_max" type="double" value="-78.4358" />
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  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="time_coverage_start" value="1997-01-02T00:00:00Z" />
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  <attribute name="time_coverage_duration" value="P0017-09-00T05:00:00" />
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  <attribute name="timezone" value="UTC" />
  <attribute name="ebas_data_definition" value="EBAS_1.1" />
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  <attribute name="ebas_citation" value="Day, D., Schichtel, B., IMPROVE, 2016, Aerosol_light_scattering_coefficient at Shenandoah National Park-Big Meadows (VA28), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/2Y3A-EEQV" />
  <attribute name="ebas_set_type_code" value="TI" />
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  <attribute name="ebas_statistics" value="arithmetic mean" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="18y" />
  <attribute name="ebas_resolution_code" value="1h" />
  <attribute name="ebas_sample_duration" value="1h" />
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  <attribute name="ebas_station_longitude" type="double" value="-78.4358" />
  <attribute name="ebas_station_altitude" value="1074.0 m" />
  <attribute name="ebas_measurement_height" value="3.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_laboratory_code" value="US11L" />
  <attribute name="ebas_instrument_type" value="nephelometer" />
  <attribute name="ebas_instrument_name" value="Optec-NGN-2_US4828" />
  <attribute name="ebas_instrument_manufacturer" value="Optech" />
  <attribute name="ebas_instrument_model" value="NGN-2" />
  <attribute name="ebas_instrument_serial_number" value="025" />
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  <attribute name="ebas_inlet_type" value="Hat or hood" />
  <attribute name="ebas_inlet_description" value="open face inlet with rain roof and rain flap, Digitel, flow 140 l/min" />
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  <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="Paul Eckhardt" />
  <attribute name="ebas_framework_contact_email" value="pe@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Day, Derek, , , , , , , , , &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;" />
  <attribute name="ebas_submitter" value="&quot;Day, Derek, , , , , , , , , &quot;, &quot;Malm, William, , , , , , , , , &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 framework: IMPROVE. Request acknowledgement details from data originator" />
  <attribute name="ebas_comment" value="NO truncation correction" />
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  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
  <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="94205" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="11" />
  <dimension name="d_Location_d0" length="1" />
  <dimension name="qc_pressure_flags" length="2" />
  <dimension name="d_Location_d1" length="1" />
  <dimension name="qc_relative_humidity_flags" length="2" />
  <dimension name="qc_temperature_flags" length="2" />
  <dimension name="d_Wavelength" length="1" />
  <dimension name="qc_aerosol_light_scattering_coefficient_flags" length="2" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="1997-01-02T00:30:00Z" />
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    <attribute name="metadata_creation" value="2026-05-30" />
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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" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="hPa" />
    <attribute name="ancillary_variables" value="qc_pressure meta_pressure" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pressure" />
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    <attribute name="ebas_instrument_model" value="NGN-2" />
    <attribute name="ebas_instrument_serial_number" value="025" />
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    <attribute name="ebas_inlet_description" value="open face inlet with rain roof and rain flap, Digitel, flow 140 l/min" />
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    <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="Paul Eckhardt" />
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    <attribute name="ebas_originator" value="&quot;Day, Derek, , , , , , , , , &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;" />
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    <attribute name="ebas_comment" value="NO 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" />
    <attribute name="standard_name" value="relative_humidity" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="%" />
    <attribute name="ancillary_variables" value="qc_relative_humidity meta_relative_humidity" />
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    <attribute name="ebas_data_license" value="" />
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    <attribute name="ebas_inlet_description" value="open face inlet with rain roof and rain flap, Digitel, flow 140 l/min" />
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    <attribute name="ebas_comment" value="NO truncation correction" />
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    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="missing_value" type="double" value="NaN" />
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    <attribute name="ebas_regime" value="IMG" />
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    <attribute name="ebas_instrument_name" value="Optec-NGN-2_US4828" />
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    <attribute name="ebas_instrument_model" value="NGN-2" />
    <attribute name="ebas_instrument_serial_number" value="025" />
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    <attribute name="ebas_standard_method" value="cal-gas=HFC-134a+AIR_truncation-correction=none+SOP=IMPROVE_nephelometer_2004" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="open face inlet with rain roof and rain flap, Digitel, flow 140 l/min" />
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    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to instrument temperature" />
    <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="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="US12O, &quot;National Park Service, Headquarters&quot;, NPS, , &quot;1849 C Street NW, , 20240, Washington DC, USA&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="IMPROVE" />
    <attribute name="ebas_framework_name" value="IMPROVE" />
    <attribute name="ebas_framework_description" value="http://vista.cira.colostate.edu/improve/Publications/OtherDocs/IMPROVEDataGuide/IMPROVEDataGuide.htm" />
    <attribute name="ebas_framework_contact_name" value="Paul Eckhardt" />
    <attribute name="ebas_framework_contact_email" value="pe@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Day, Derek, , , , , , , , , &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;" />
    <attribute name="ebas_submitter" value="&quot;Day, Derek, , , , , , , , , &quot;, &quot;Malm, William, , , , , , , , , &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 framework: IMPROVE. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="NO truncation correction" />
  </variable>
  <variable name="qc_temperature" shape="d_Location_d1 qc_temperature_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="meta_temperature" shape="d_Location_d1 metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="v_aerosol_light_scattering_coefficient" shape="d_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="qc_aerosol_light_scattering_coefficient meta_aerosol_light_scattering_coefficient" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="" />
    <attribute name="ebas_revision_date" value="2016-06-20T13:06:20.777000Z" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, cloud-screened, trace-gas corrected, manually inspected" />
    <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="US4828R" />
    <attribute name="ebas_platform_code" value="US4828S" />
    <attribute name="ebas_station_name" value="Shenandoah National Park-Big Meadows (VA28)" />
    <attribute name="ebas_station_latitude" type="double" value="38.5225" />
    <attribute name="ebas_station_longitude" type="double" value="-78.4358" />
    <attribute name="ebas_station_altitude" value="1074.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 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="aerosol" />
    <attribute name="ebas_laboratory_code" value="US11L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="Optec-NGN-2_US4828" />
    <attribute name="ebas_instrument_manufacturer" value="Optech" />
    <attribute name="ebas_instrument_model" value="NGN-2" />
    <attribute name="ebas_instrument_serial_number" value="025" />
    <attribute name="ebas_method_ref" value="US11L_IMPROVE_nephelometer_2004" />
    <attribute name="ebas_standard_method" value="cal-gas=HFC-134a+AIR_truncation-correction=none+SOP=IMPROVE_nephelometer_2004" />
    <attribute name="ebas_inlet_type" value="Hat or hood" />
    <attribute name="ebas_inlet_description" value="open face inlet with rain roof and rain flap, Digitel, flow 140 l/min" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to instrument temperature" />
    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
    <attribute name="ebas_volume_std_pressure" value="1013.25 hPa" />
    <attribute name="ebas_detection_limit" value="5.0 1/Mm" />
    <attribute name="ebas_detection_limit_expl" value="Determined by instrument counting statistics, no detection limit flag used" />
    <attribute name="ebas_measurement_uncertainty" value="10.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="calculated from replicate samples" />
    <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="US12O, &quot;National Park Service, Headquarters&quot;, NPS, , &quot;1849 C Street NW, , 20240, Washington DC, USA&quot;, , , , " />
    <attribute name="ebas_framework_acronym" value="IMPROVE" />
    <attribute name="ebas_framework_name" value="IMPROVE" />
    <attribute name="ebas_framework_description" value="http://vista.cira.colostate.edu/improve/Publications/OtherDocs/IMPROVEDataGuide/IMPROVEDataGuide.htm" />
    <attribute name="ebas_framework_contact_name" value="Paul Eckhardt" />
    <attribute name="ebas_framework_contact_email" value="pe@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Day, Derek, , , , , , , , , &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;" />
    <attribute name="ebas_submitter" value="&quot;Day, Derek, , , , , , , , , &quot;, &quot;Malm, William, , , , , , , , , &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 framework: IMPROVE. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="NO truncation correction" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlelightscatteringcoefficient" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle light scattering coefficient" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlephase" />
    <attribute name="actris_matrix_preferred_term" value="aerosol particle phase" />
    <attribute name="actris_timeliness_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/scheduled" />
    <attribute name="actris_timeliness_preferred_term" value="scheduled" />
    <attribute name="actris_instrument_type_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/integratingnephelometer" />
    <attribute name="actris_instrument_type_preferred_term" value="integrating nephelometer" />
    <attribute name="actris_framework_uri" value="" />
    <attribute name="actris_framework_preferred_term" value="" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="1" />
  </variable>
  <variable name="qc_aerosol_light_scattering_coefficient" shape="d_Wavelength qc_aerosol_light_scattering_coefficient_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="meta_aerosol_light_scattering_coefficient" shape="d_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 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <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 1900-01-01T00:00:00Z" />
    <attribute name="axis" value="T" />
    <attribute name="calendar" value="standard" />
    <attribute name="bounds" value="metadata_time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
  </variable>
  <variable name="d_Location_d0" shape="d_Location_d0" type="String" />
  <variable name="d_Location_d1" shape="d_Location_d1" type="String" />
  <variable name="d_Wavelength" shape="d_Wavelength" type="double" />
</netcdf>
