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  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Ground based in situ observations of nephelometer at Saguaro NM - Tucson Mountain #1 (US9084R)" />
  <attribute name="keywords" value="GAW-WDCA, IMPROVE, US9084R, Saguaro NM - Tucson Mountain #1" />
  <attribute name="id" value="AYR9-HVXD.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="GAW-WDCA, IMPROVE" />
  <attribute name="acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="doi" value="https://doi.org/10.48597/AYR9-HVXD" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Derek Day,  - nephelometer at Saguaro NM - Tucson Mountain #1, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/AYR9-HVXD" />
  <attribute name="summary" value="Ground based in situ observations of nephelometer at Saguaro NM - Tucson Mountain #1 (US9084R). 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: " />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="US12O, National Park Service, Headquarters, NPS, 1849 C Street NW, , 20240, Washington DC, USA" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2012-02-22T00:00:00 UTC" />
  <attribute name="date_metadata_modified" value="2012-02-22T00:00:00 UTC" />
  <attribute name="creator_name" value="Derek Day" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="" />
  <attribute name="creator_institution" value="" />
  <attribute name="contributor_name" value="Derek Day" />
  <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="time_coverage_start" value="1996-10-02T07:00:00 UTC" />
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  <attribute name="ebas_citation" value="Derek Day,  - nephelometer at Saguaro NM - Tucson Mountain #1, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/AYR9-HVXD" />
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  <attribute name="ebas_export_state" value="2018-10-23T09:18:27.403000 UTC" />
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  <attribute name="ebas_revision_date" value="20120222000000" />
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  <attribute name="ebas_statistics" value="arithmetic mean" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="5y" />
  <attribute name="ebas_resolution_code" value="1h" />
  <attribute name="ebas_sample_duration" value="1h" />
  <attribute name="ebas_orig_time_res" value="1mn" />
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  <attribute name="ebas_station_latitude" value="32.2833" />
  <attribute name="ebas_station_longitude" value="-111.1667" />
  <attribute name="ebas_station_altitude" value="754.0 m" />
  <attribute name="ebas_measurement_height" value="3.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_matrix" value="instrument" />
  <attribute name="ebas_laboratory_code" value="US11L" />
  <attribute name="ebas_instrument_type" value="nephelometer" />
  <attribute name="ebas_instrument_name" value="Optec-NGN-2_US9048" />
  <attribute name="ebas_instrument_manufacturer" value="Optech" />
  <attribute name="ebas_instrument_model" value="NGN-2" />
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  <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="Impactor--direct" />
  <attribute name="ebas_inlet_description" value="PM10 at ambient humidity inlet, 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_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" />
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  <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, IMPROVE" />
  <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., http://vista.cira.colostate.edu/improve/Publications/OtherDocs/IMPROVEDataGuide/IMPROVEDataGuide.htm" />
  <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Paul Eckhardt" />
  <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, pe@nilu.no" />
  <attribute name="ebas_originator" value="Day, Derek, , , , , , , , , " />
  <attribute name="ebas_submitter" value="Day, Derek, , , , , , , , , " />
  <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="ebas_comment" value="10 % measurement uncertainty." />
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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;Derek Day,  - nephelometer at Saguaro NM - Tucson Mountain #1, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/AYR9-HVXD&quot;,&#xA;    &quot;Set type code&quot;: &quot;TU&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;AYR9-HVXD.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/AYR9-HVXD&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/AYR9-HVXD&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-12-10T04:31:17.736306 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2018-10-23T09:18:27.403000 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;19961002070000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20120222000000&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;initial revision, cloud-screened, trace-gas corrected, manually inspected&quot;,&#xA;    &quot;Statistics&quot;: &quot;arithmetic mean&quot;,&#xA;    &quot;Data level&quot;: &quot;2&quot;,&#xA;    &quot;Period code&quot;: &quot;5y&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;US9084R&quot;,&#xA;    &quot;Platform code&quot;: &quot;US9084S&quot;,&#xA;    &quot;Station name&quot;: &quot;Saguaro NM - Tucson Mountain #1&quot;,&#xA;    &quot;Station latitude&quot;: &quot;32.2833&quot;,&#xA;    &quot;Station longitude&quot;: &quot;-111.1667&quot;,&#xA;    &quot;Station altitude&quot;: &quot;754.0 m&quot;,&#xA;    &quot;Measurement height&quot;: &quot;3.0 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_US9048&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;Varied in time&quot;,&#xA;    &quot;Method ref&quot;: &quot;US11L_IMPROVE_nephelometer_2004&quot;,&#xA;    &quot;Standard method&quot;: &quot;cal-gas=HFC-134a+AIR_truncation-correction=none+SOP=IMPROVE_nephelometer_2004&quot;,&#xA;    &quot;Inlet type&quot;: &quot;Impactor--direct&quot;,&#xA;    &quot;Inlet description&quot;: &quot;PM10 at ambient humidity inlet, Digitel, flow 140 l/min&quot;,&#xA;    &quot;Humidity/temperature control&quot;: &quot;None&quot;,&#xA;    &quot;Humidity/temperature control description&quot;: &quot;passive, sample heated from atmospheric to instrument temperature&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;calculated from replicate samples&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;US12O, \&quot;National Park Service, Headquarters\&quot;, NPS, , \&quot;1849 C Street NW, , 20240, Washington DC, USA\&quot;, , , , &quot;,&#xA;    &quot;Framework acronym&quot;: &quot;GAW-WDCA, IMPROVE&quot;,&#xA;    &quot;Framework name&quot;: &quot;World Data Centre for Aerosols, IMPROVE&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., http://vista.cira.colostate.edu/improve/Publications/OtherDocs/IMPROVEDataGuide/IMPROVEDataGuide.htm&quot;,&#xA;    &quot;Framework contact name&quot;: &quot;Markus Fiebig, Paul Eckhardt&quot;,&#xA;    &quot;Framework contact email&quot;: &quot;Markus.Fiebig@nilu.no, pe@nilu.no&quot;,&#xA;    &quot;Originator&quot;: &quot;Day, Derek, , , , , , , , , &quot;,&#xA;    &quot;Submitter&quot;: &quot;Day, Derek, , , , , , , , , &quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;Request acknowledgement details from data originator&quot;,&#xA;    &quot;Comment&quot;: &quot;10 % measurement uncertainty.&quot;&#xA;}" />
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    <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Paul Eckhardt" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, pe@nilu.no" />
    <attribute name="ebas_originator" value="Day, Derek, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Day, Derek, , , , , , , , , " />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="10 % measurement uncertainty." />
  </variable>
  <variable name="relative_humidity_qc" shape="Locationx 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="relative_humidity_ebasmetadata" shape="Locationx metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="temperature" shape="Locationx 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" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20120222000000" />
    <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="US9084R" />
    <attribute name="ebas_platform_code" value="US9084S" />
    <attribute name="ebas_station_name" value="Saguaro NM - Tucson Mountain #1" />
    <attribute name="ebas_station_latitude" value="32.2833" />
    <attribute name="ebas_station_longitude" value="-111.1667" />
    <attribute name="ebas_station_altitude" value="754.0 m" />
    <attribute name="ebas_measurement_height" value="3.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="temperature" />
    <attribute name="ebas_unit" value="K" />
    <attribute name="ebas_matrix" value="instrument" />
    <attribute name="ebas_laboratory_code" value="US11L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="Optec-NGN-2_US9048" />
    <attribute name="ebas_instrument_manufacturer" value="Optech" />
    <attribute name="ebas_instrument_model" value="NGN-2" />
    <attribute name="ebas_instrument_serial_number" value="Varied in time" />
    <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="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="PM10 at ambient humidity inlet, 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_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="GAW-WDCA, IMPROVE" />
    <attribute name="ebas_framework_name" value="World Data Centre for Aerosols, IMPROVE" />
    <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., http://vista.cira.colostate.edu/improve/Publications/OtherDocs/IMPROVEDataGuide/IMPROVEDataGuide.htm" />
    <attribute name="ebas_framework_contact_name" value="Markus Fiebig, Paul Eckhardt" />
    <attribute name="ebas_framework_contact_email" value="Markus.Fiebig@nilu.no, pe@nilu.no" />
    <attribute name="ebas_originator" value="Day, Derek, , , , , , , , , " />
    <attribute name="ebas_submitter" value="Day, Derek, , , , , , , , , " />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="10 % measurement uncertainty." />
  </variable>
  <variable name="temperature_qc" shape="Locationx 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="Locationx 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="Location" shape="Location" type="String" />
  <variable name="Locationx" shape="Locationx" type="String" />
</netcdf>
