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  <attribute name="title" value="Aerosol_absorption_coefficient at Lecce (University of Salento)" />
  <attribute name="summary" value="Aerosol_absorption_coefficient at Lecce (University of Salento). These measurements are gathered as a part of the following projects ACTRIS, GAW-WDCA 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_absorption_coefficient in pm25']" />
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  <attribute name="doi" value="https://doi.org/10.48597/NJ5Q-MVXB" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Romano, S., Peccarrisi, D., Gabriele, A., ACTRIS, GAW-WDCA, 2024, Aerosol_absorption_coefficient at Lecce (University of Salento), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/NJ5Q-MVXB" />
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  <attribute name="date_created" value="2024-05-22T09:44:15.948863Z" />
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  <attribute name="contributor_name" value="Salvatore Romano, Dalila Peccarrisi, Alessandra Gabriele" />
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  <attribute name="publisher_name" value="NILU - Norwegian Institute for Air Research, ATMOS, EBAS" />
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  <attribute name="ebas_qa1_date" value="2015-09-22T00:00:00Z" />
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  <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
  <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
  <attribute name="ebas_originator" value="&quot;Romano, Salvatore, salvatore.romano@unisalento.it, Salento University, , Mathematics and Physics Department, via per Arnesano, , 73100, Lecce, Italy&quot;, &quot;Peccarrisi, Dalila, dalila.peccarrisi@unisalento.it, Mathematics and Physics Department, SAL, , via per Arnesano, , 73100, Lecce, Italy&quot;, &quot;Gabriele, Alessandra, alessandra.gabriele@unisalento.it, Mathematics and Physics Department, SAL, , via per Arnesano, , 73100, Lecce, Italy&quot;" />
  <attribute name="ebas_submitter" value="&quot;Romano, Salvatore, salvatore.romano@unisalento.it, Salento University, , Mathematics and Physics Department, via per Arnesano, , 73100, Lecce, Italy&quot;, &quot;Peccarrisi, Dalila, dalila.peccarrisi@unisalento.it, Mathematics and Physics Department, SAL, , via per Arnesano, , 73100, Lecce, Italy&quot;, &quot;Gabriele, Alessandra, alessandra.gabriele@unisalento.it, Mathematics and Physics Department, SAL, , via per Arnesano, , 73100, Lecce, Italy&quot;" />
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    <attribute name="ebas_comment" value="Standard Bond et al. 1999 values for K1 and K2 used at all wavelengths" />
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    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
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    <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="IT0017U" />
    <attribute name="ebas_platform_code" value="IT0017S" />
    <attribute name="ebas_station_name" value="Lecce (University of Salento)" />
    <attribute name="ebas_station_land_use" value="Commercial" />
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    <attribute name="ebas_station_latitude" type="double" value="40.3349" />
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    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="temperature" />
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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_comment" value="Standard Bond et al. 1999 values for K1 and K2 used at all wavelengths" />
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    <attribute name="long_name" value="ebas metadata for different time intervals; json encoded" />
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    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision" />
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    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1h" />
    <attribute name="ebas_orig_time_res" value="1mn" />
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    <attribute name="ebas_platform_code" value="IT0017S" />
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    <attribute name="ebas_station_setting" value="Suburban" />
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    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
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    <attribute name="ebas_comment" value="Standard Bond et al. 1999 values for K1 and K2 used at all wavelengths" />
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    <attribute name="ebas_orig_time_res" value="1mn" />
    <attribute name="ebas_station_code" value="IT0017U" />
    <attribute name="ebas_platform_code" value="IT0017S" />
    <attribute name="ebas_station_name" value="Lecce (University of Salento)" />
    <attribute name="ebas_station_land_use" value="Commercial" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_latitude" type="double" value="40.3349" />
    <attribute name="ebas_station_longitude" type="double" value="18.1114" />
    <attribute name="ebas_station_altitude" value="30.0 m" />
    <attribute name="ebas_measurement_height" value="2.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="aerosol_absorption_coefficient" />
    <attribute name="ebas_unit" value="1/Mm" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="IT12L" />
    <attribute name="ebas_instrument_type" value="filter_absorption_photometer" />
    <attribute name="ebas_instrument_name" value="Magee_AE33_SAL" />
    <attribute name="ebas_instrument_manufacturer" value="Magee" />
    <attribute name="ebas_instrument_model" value="AE33" />
    <attribute name="ebas_instrument_serial_number" value="----------" />
    <attribute name="ebas_method_ref" value="IT12L_abs_coef" />
    <attribute name="ebas_standard_method" value="Single-angle_Correction=Bond1999" />
    <attribute name="ebas_inlet_type" value="Cyclone" />
    <attribute name="ebas_inlet_description" value="Sharp-Cut Cyclone Inlet, 2.5 μm cut at 2 LPM flowrate" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="passive, sample heated from atmospheric to lab 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="0.1 1/Mm" />
    <attribute name="ebas_detection_limit_expl" value="Determined by instrument noise characteristics, no detection limit flag used" />
    <attribute name="ebas_measurement_uncertainty" value="6.0 %" />
    <attribute name="ebas_measurement_uncertainty_expl" value="typical value of unit-to-unit variability as estimated by Bond et al., 1999." />
    <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="IT12L, University of Salento, , , &quot;Piazza Tancredi, n7&quot;, , 73100, Lecce, Italy" />
    <attribute name="ebas_framework_acronym" value="ACTRIS, GAW-WDCA" />
    <attribute name="ebas_framework_name" value="&quot;European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases&quot;, World Data Centre for Aerosols" />
    <attribute name="ebas_framework_description" value="&quot;ACTRIS is the European Research Infrastructure for the observation of Aerosol, Clouds, and Trace gases. ACTRIS is composed of observing stations, exploratory platforms, instruments calibration centres, and a data centre.&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.&quot;" />
    <attribute name="ebas_framework_contact_name" value="Cathrine Lund Myhre, Markus Fiebig" />
    <attribute name="ebas_framework_contact_email" value="clm@nilu.no, Markus.Fiebig@nilu.no" />
    <attribute name="ebas_originator" value="&quot;Romano, Salvatore, salvatore.romano@unisalento.it, Salento University, , Mathematics and Physics Department, via per Arnesano, , 73100, Lecce, Italy&quot;, &quot;Peccarrisi, Dalila, dalila.peccarrisi@unisalento.it, Mathematics and Physics Department, SAL, , via per Arnesano, , 73100, Lecce, Italy&quot;, &quot;Gabriele, Alessandra, alessandra.gabriele@unisalento.it, Mathematics and Physics Department, SAL, , via per Arnesano, , 73100, Lecce, Italy&quot;" />
    <attribute name="ebas_submitter" value="&quot;Romano, Salvatore, salvatore.romano@unisalento.it, Salento University, , Mathematics and Physics Department, via per Arnesano, , 73100, Lecce, Italy&quot;, &quot;Peccarrisi, Dalila, dalila.peccarrisi@unisalento.it, Mathematics and Physics Department, SAL, , via per Arnesano, , 73100, Lecce, Italy&quot;, &quot;Gabriele, Alessandra, alessandra.gabriele@unisalento.it, Mathematics and Physics Department, SAL, , via per Arnesano, , 73100, Lecce, Italy&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 frameworks: ACTRIS, GAW-WDCA. Request acknowledgement details from data originator" />
    <attribute name="ebas_comment" value="Standard Bond et al. 1999 values for K1 and K2 used at all wavelengths" />
    <attribute name="actris_variable_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/aerosolparticlelightabsorptioncoefficient" />
    <attribute name="actris_variable_preferred_term" value="aerosol particle light absorption coefficient" />
    <attribute name="actris_matrix_uri" value="https://vocabulary.actris.nilu.no/actris_vocab/PM2.5" />
    <attribute name="actris_matrix_preferred_term" value="PM2.5" />
    <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/filterabsorptionphotometer" />
    <attribute name="actris_instrument_type_preferred_term" value="filter absorption photometer" />
    <attribute name="actris_framework_uri" value="https://vocabulary.actris.nilu.no/actris_controlled_lists/ACTRIS, https://vocabulary.actris.nilu.no/actris_controlled_lists/GAW-WDCA" />
    <attribute name="actris_framework_preferred_term" value="ACTRIS, GAW-WDCA" />
    <attribute name="actris_temporal_resolution" value="PT1H" />
    <attribute name="actris_access_restriction" type="long" value="0" />
  </variable>
  <variable name="qc_aerosol_absorption_coefficient_perc8413" shape="d_Wavelength qc_aerosol_absorption_coefficient_perc8413_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_absorption_coefficient_perc8413" 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>
