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  <attribute name="title" value="Aerosol light scattering at Alert" />
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  <attribute name="doi" value="https://doi.org/10.48597/5E6G-WW9G" />
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  <attribute name="citation" value="Sharma, S., GAW-WDCA, NOAA-ESRL, 2020, Aerosol light scattering at Alert, data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/5E6G-WW9G" />
  <attribute name="summary" value="Aerosol light scattering at Alert. 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_light_backscattering_coefficient in pm1, aerosol_light_backscattering_coefficient in pm1, aerosol_light_backscattering_coefficient in pm1, aerosol_light_scattering_coefficient in pm1, aerosol_light_scattering_coefficient in pm1, aerosol_light_scattering_coefficient in pm1" />
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  <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" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20200210000955" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by CPD3 EBAS Export v24-106-gfe5fcc5-m run as da.output.upload (18740) run by aerosol on aero2-new.cmdl.noaa.gov via da.output.upload --after=undef --profile=ebas --quiet alt" />
    <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="CA0420G" />
    <attribute name="ebas_platform_code" value="CA0420S" />
    <attribute name="ebas_station_name" value="Alert" />
    <attribute name="ebas_station_wdca_id" value="GAWACANUALT" />
    <attribute name="ebas_station_gaw_id" value="ALT" />
    <attribute name="ebas_station_gaw_name" value="Alert" />
    <attribute name="ebas_station_state_province" value="NU" />
    <attribute name="ebas_station_land_use" value="Military reservation" />
    <attribute name="ebas_station_setting" value="Polar" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="4" />
    <attribute name="ebas_station_latitude" value="82.4991455078" />
    <attribute name="ebas_station_longitude" value="-62.3415260315" />
    <attribute name="ebas_station_altitude" value="210.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="82.499146" />
    <attribute name="ebas_measurement_longitude" value="-62.341526" />
    <attribute name="ebas_measurement_altitude" value="2182.0 m" />
    <attribute name="ebas_measurement_height" value="210.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="relative_humidity" />
    <attribute name="ebas_unit" value="%" />
    <attribute name="ebas_matrix" value="instrument" />
    <attribute name="ebas_laboratory_code" value="CA01L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="TSI_3563_ALT_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3563" />
    <attribute name="ebas_method_ref" value="CA01L_scat_coef" />
    <attribute name="ebas_standard_method" value="cal-gas=CO2+AIR_truncation-correction=Anderson1998" />
    <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="CA01L, Environment Canada, EC/AES, Atmospheric Environmental Service, 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <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="Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;Climate Chemistry Measurements Research, Environment Canada&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <attribute name="ebas_submitter" value="Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;Climate Chemistry Measurements Research, Environment Canada&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <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" />
  </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="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" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20200210000955" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by CPD3 EBAS Export v24-106-gfe5fcc5-m run as da.output.upload (18740) run by aerosol on aero2-new.cmdl.noaa.gov via da.output.upload --after=undef --profile=ebas --quiet alt" />
    <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="CA0420G" />
    <attribute name="ebas_platform_code" value="CA0420S" />
    <attribute name="ebas_station_name" value="Alert" />
    <attribute name="ebas_station_wdca_id" value="GAWACANUALT" />
    <attribute name="ebas_station_gaw_id" value="ALT" />
    <attribute name="ebas_station_gaw_name" value="Alert" />
    <attribute name="ebas_station_state_province" value="NU" />
    <attribute name="ebas_station_land_use" value="Military reservation" />
    <attribute name="ebas_station_setting" value="Polar" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="4" />
    <attribute name="ebas_station_latitude" value="82.4991455078" />
    <attribute name="ebas_station_longitude" value="-62.3415260315" />
    <attribute name="ebas_station_altitude" value="210.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="82.499146" />
    <attribute name="ebas_measurement_longitude" value="-62.341526" />
    <attribute name="ebas_measurement_altitude" value="2182.0 m" />
    <attribute name="ebas_measurement_height" value="210.0 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="CA01L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="TSI_3563_ALT_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3563" />
    <attribute name="ebas_method_ref" value="CA01L_scat_coef" />
    <attribute name="ebas_standard_method" value="cal-gas=CO2+AIR_truncation-correction=Anderson1998" />
    <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="CA01L, Environment Canada, EC/AES, Atmospheric Environmental Service, 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <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="Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;Climate Chemistry Measurements Research, Environment Canada&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <attribute name="ebas_submitter" value="Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;Climate Chemistry Measurements Research, Environment Canada&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <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" />
  </variable>
  <variable name="temperature_qc" shape="Location 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="Location metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_light_backscattering_coefficient_amean" 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_light_backscattering_coefficient_amean_qc aerosol_light_backscattering_coefficient_amean_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="20200210000955" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by CPD3 EBAS Export v24-106-gfe5fcc5-m run as da.output.upload (18740) run by aerosol on aero2-new.cmdl.noaa.gov via da.output.upload --after=undef --profile=ebas --quiet alt" />
    <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="CA0420G" />
    <attribute name="ebas_platform_code" value="CA0420S" />
    <attribute name="ebas_station_name" value="Alert" />
    <attribute name="ebas_station_wdca_id" value="GAWACANUALT" />
    <attribute name="ebas_station_gaw_id" value="ALT" />
    <attribute name="ebas_station_gaw_name" value="Alert" />
    <attribute name="ebas_station_state_province" value="NU" />
    <attribute name="ebas_station_land_use" value="Military reservation" />
    <attribute name="ebas_station_setting" value="Polar" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="4" />
    <attribute name="ebas_station_latitude" value="82.4991455078" />
    <attribute name="ebas_station_longitude" value="-62.3415260315" />
    <attribute name="ebas_station_altitude" value="210.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="82.499146" />
    <attribute name="ebas_measurement_longitude" value="-62.341526" />
    <attribute name="ebas_measurement_altitude" value="2182.0 m" />
    <attribute name="ebas_measurement_height" value="210.0 m" />
    <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="pm1" />
    <attribute name="ebas_laboratory_code" value="CA01L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="TSI_3563_ALT_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3563" />
    <attribute name="ebas_method_ref" value="CA01L_scat_coef" />
    <attribute name="ebas_standard_method" value="cal-gas=CO2+AIR_truncation-correction=Anderson1998" />
    <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="CA01L, Environment Canada, EC/AES, Atmospheric Environmental Service, 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <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="Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;Climate Chemistry Measurements Research, Environment Canada&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <attribute name="ebas_submitter" value="Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;Climate Chemistry Measurements Research, Environment Canada&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <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" />
  </variable>
  <variable name="aerosol_light_backscattering_coefficient_amean_qc" shape="Wavelength aerosol_light_backscattering_coefficient_amean_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_backscattering_coefficient_amean_ebasmetadata" shape="Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_light_backscattering_coefficient_prec1587" 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_light_backscattering_coefficient_prec1587_qc aerosol_light_backscattering_coefficient_prec1587_ebasmetadata" />
    <attribute name="cell_methods" value="time: percentile:15.87" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20200210000955" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by CPD3 EBAS Export v24-106-gfe5fcc5-m run as da.output.upload (18740) run by aerosol on aero2-new.cmdl.noaa.gov via da.output.upload --after=undef --profile=ebas --quiet alt" />
    <attribute name="ebas_statistics" value="percentile:15.87" />
    <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="CA0420G" />
    <attribute name="ebas_platform_code" value="CA0420S" />
    <attribute name="ebas_station_name" value="Alert" />
    <attribute name="ebas_station_wdca_id" value="GAWACANUALT" />
    <attribute name="ebas_station_gaw_id" value="ALT" />
    <attribute name="ebas_station_gaw_name" value="Alert" />
    <attribute name="ebas_station_state_province" value="NU" />
    <attribute name="ebas_station_land_use" value="Military reservation" />
    <attribute name="ebas_station_setting" value="Polar" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="4" />
    <attribute name="ebas_station_latitude" value="82.4991455078" />
    <attribute name="ebas_station_longitude" value="-62.3415260315" />
    <attribute name="ebas_station_altitude" value="210.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="82.499146" />
    <attribute name="ebas_measurement_longitude" value="-62.341526" />
    <attribute name="ebas_measurement_altitude" value="2182.0 m" />
    <attribute name="ebas_measurement_height" value="210.0 m" />
    <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="pm1" />
    <attribute name="ebas_laboratory_code" value="CA01L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="TSI_3563_ALT_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3563" />
    <attribute name="ebas_method_ref" value="CA01L_scat_coef" />
    <attribute name="ebas_standard_method" value="cal-gas=CO2+AIR_truncation-correction=Anderson1998" />
    <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="CA01L, Environment Canada, EC/AES, Atmospheric Environmental Service, 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <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="Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;Climate Chemistry Measurements Research, Environment Canada&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <attribute name="ebas_submitter" value="Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;Climate Chemistry Measurements Research, Environment Canada&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <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" />
  </variable>
  <variable name="aerosol_light_backscattering_coefficient_prec1587_qc" shape="Wavelength aerosol_light_backscattering_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_light_backscattering_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_light_backscattering_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_light_backscattering_coefficient_perc8413_qc aerosol_light_backscattering_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="20200210000955" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by CPD3 EBAS Export v24-106-gfe5fcc5-m run as da.output.upload (18740) run by aerosol on aero2-new.cmdl.noaa.gov via da.output.upload --after=undef --profile=ebas --quiet alt" />
    <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="CA0420G" />
    <attribute name="ebas_platform_code" value="CA0420S" />
    <attribute name="ebas_station_name" value="Alert" />
    <attribute name="ebas_station_wdca_id" value="GAWACANUALT" />
    <attribute name="ebas_station_gaw_id" value="ALT" />
    <attribute name="ebas_station_gaw_name" value="Alert" />
    <attribute name="ebas_station_state_province" value="NU" />
    <attribute name="ebas_station_land_use" value="Military reservation" />
    <attribute name="ebas_station_setting" value="Polar" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="4" />
    <attribute name="ebas_station_latitude" value="82.4991455078" />
    <attribute name="ebas_station_longitude" value="-62.3415260315" />
    <attribute name="ebas_station_altitude" value="210.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="82.499146" />
    <attribute name="ebas_measurement_longitude" value="-62.341526" />
    <attribute name="ebas_measurement_altitude" value="2182.0 m" />
    <attribute name="ebas_measurement_height" value="210.0 m" />
    <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="pm1" />
    <attribute name="ebas_laboratory_code" value="CA01L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="TSI_3563_ALT_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3563" />
    <attribute name="ebas_method_ref" value="CA01L_scat_coef" />
    <attribute name="ebas_standard_method" value="cal-gas=CO2+AIR_truncation-correction=Anderson1998" />
    <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="CA01L, Environment Canada, EC/AES, Atmospheric Environmental Service, 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <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="Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;Climate Chemistry Measurements Research, Environment Canada&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <attribute name="ebas_submitter" value="Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;Climate Chemistry Measurements Research, Environment Canada&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <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" />
  </variable>
  <variable name="aerosol_light_backscattering_coefficient_perc8413_qc" shape="Wavelength aerosol_light_backscattering_coefficient_perc8413_qc_flags time" type="int">
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    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
  </variable>
  <variable name="aerosol_light_backscattering_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="aerosol_light_scattering_coefficient_amean" 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_light_scattering_coefficient_amean_qc aerosol_light_scattering_coefficient_amean_ebasmetadata" />
    <attribute name="cell_methods" value="time: mean" />
    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
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    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by CPD3 EBAS Export v24-106-gfe5fcc5-m run as da.output.upload (18740) run by aerosol on aero2-new.cmdl.noaa.gov via da.output.upload --after=undef --profile=ebas --quiet alt" />
    <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="CA0420G" />
    <attribute name="ebas_platform_code" value="CA0420S" />
    <attribute name="ebas_station_name" value="Alert" />
    <attribute name="ebas_station_wdca_id" value="GAWACANUALT" />
    <attribute name="ebas_station_gaw_id" value="ALT" />
    <attribute name="ebas_station_gaw_name" value="Alert" />
    <attribute name="ebas_station_state_province" value="NU" />
    <attribute name="ebas_station_land_use" value="Military reservation" />
    <attribute name="ebas_station_setting" value="Polar" />
    <attribute name="ebas_station_gaw_type" value="G" />
    <attribute name="ebas_station_wmo_region" value="4" />
    <attribute name="ebas_station_latitude" value="82.4991455078" />
    <attribute name="ebas_station_longitude" value="-62.3415260315" />
    <attribute name="ebas_station_altitude" value="210.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="82.499146" />
    <attribute name="ebas_measurement_longitude" value="-62.341526" />
    <attribute name="ebas_measurement_altitude" value="2182.0 m" />
    <attribute name="ebas_measurement_height" value="210.0 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="pm1" />
    <attribute name="ebas_laboratory_code" value="CA01L" />
    <attribute name="ebas_instrument_type" value="nephelometer" />
    <attribute name="ebas_instrument_name" value="TSI_3563_ALT_pm1" />
    <attribute name="ebas_instrument_manufacturer" value="TSI" />
    <attribute name="ebas_instrument_model" value="3563" />
    <attribute name="ebas_method_ref" value="CA01L_scat_coef" />
    <attribute name="ebas_standard_method" value="cal-gas=CO2+AIR_truncation-correction=Anderson1998" />
    <attribute name="ebas_inlet_type" value="Impactor--direct" />
    <attribute name="ebas_inlet_description" value="Switched impactor at 1 um" />
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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" />
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    <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="Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;Climate Chemistry Measurements Research, Environment Canada&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <attribute name="ebas_submitter" value="Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;Climate Chemistry Measurements Research, Environment Canada&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <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" />
  </variable>
  <variable name="aerosol_light_scattering_coefficient_amean_qc" shape="Wavelength aerosol_light_scattering_coefficient_amean_qc_flags time" type="int">
    <attribute name="_FillValue" type="int" value="0" />
    <attribute name="standard_name" value="status_flag" />
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    <attribute name="units" value="1" />
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  <variable name="aerosol_light_scattering_coefficient_amean_ebasmetadata" shape="Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
  </variable>
  <variable name="aerosol_light_scattering_coefficient_prec1587" 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" />
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    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by CPD3 EBAS Export v24-106-gfe5fcc5-m run as da.output.upload (18740) run by aerosol on aero2-new.cmdl.noaa.gov via da.output.upload --after=undef --profile=ebas --quiet alt" />
    <attribute name="ebas_statistics" value="percentile:15.87" />
    <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="CA0420G" />
    <attribute name="ebas_platform_code" value="CA0420S" />
    <attribute name="ebas_station_name" value="Alert" />
    <attribute name="ebas_station_wdca_id" value="GAWACANUALT" />
    <attribute name="ebas_station_gaw_id" value="ALT" />
    <attribute name="ebas_station_gaw_name" value="Alert" />
    <attribute name="ebas_station_state_province" value="NU" />
    <attribute name="ebas_station_land_use" value="Military reservation" />
    <attribute name="ebas_station_setting" value="Polar" />
    <attribute name="ebas_station_gaw_type" value="G" />
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    <attribute name="ebas_station_latitude" value="82.4991455078" />
    <attribute name="ebas_station_longitude" value="-62.3415260315" />
    <attribute name="ebas_station_altitude" value="210.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="82.499146" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_light_scattering_coefficient" />
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    <attribute name="ebas_matrix" value="pm1" />
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    <attribute name="ebas_inlet_description" value="Switched impactor at 1 um" />
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    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
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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_name" value="World Data Centre for Aerosols, " />
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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" />
  </variable>
  <variable name="aerosol_light_scattering_coefficient_prec1587_qc" shape="Wavelength aerosol_light_scattering_coefficient_prec1587_qc_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="aerosol_light_scattering_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_light_scattering_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" />
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    <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
    <attribute name="ebas_revision_date" value="20200210000955" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="Version numbering not tracked, generated by CPD3 EBAS Export v24-106-gfe5fcc5-m run as da.output.upload (18740) run by aerosol on aero2-new.cmdl.noaa.gov via da.output.upload --after=undef --profile=ebas --quiet alt" />
    <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_code" value="CA0420G" />
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    <attribute name="ebas_station_gaw_id" value="ALT" />
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    <attribute name="ebas_station_state_province" value="NU" />
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    <attribute name="ebas_station_gaw_type" value="G" />
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    <attribute name="ebas_station_latitude" value="82.4991455078" />
    <attribute name="ebas_station_longitude" value="-62.3415260315" />
    <attribute name="ebas_station_altitude" value="210.0 m" />
    <attribute name="ebas_measuremenet_latitude" value="82.499146" />
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    <attribute name="ebas_component" value="aerosol_light_scattering_coefficient" />
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    <attribute name="ebas_instrument_name" value="TSI_3563_ALT_pm1" />
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    <attribute name="ebas_volume_std_temperature" value="273.15 K" />
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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="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" />
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    <attribute name="ebas_submitter" value="Sharma, Sangeeta, sangeeta.sharma@canada.ca, &quot;Climate Chemistry Measurements Research, Environment Canada&quot;, EC, , 4905 Dufferin Street, , M3H 5T4, &quot;Downsview, Ontario&quot;, Canada" />
    <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" />
  </variable>
  <variable name="aerosol_light_scattering_coefficient_perc8413_qc" shape="Wavelength aerosol_light_scattering_coefficient_perc8413_qc_flags time" type="int">
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    <attribute name="units" value="1" />
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  <variable name="aerosol_light_scattering_coefficient_perc8413_ebasmetadata" shape="Wavelength metadata_time" type="String">
    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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  <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" />
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    <attribute name="calendar" value="gregorian" />
    <attribute name="bounds" value="time_bnds" />
    <attribute name="_CoordinateAxisType" value="Time" />
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  <variable name="metadata_time" shape="metadata_time" type="double">
    <attribute name="long_name" value="time of ebas metadata intervals" />
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    <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="Wavelength" shape="Wavelength" type="double" />
</netcdf>
