<?xml version="1.0" encoding="UTF-8"?>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2" location="Not provided because of security concerns.">
  <attribute name="Conventions" value="CF-1.8, ACDD-1.3" />
  <attribute name="featureType" value="timeSeries" />
  <attribute name="title" value="Ground based in situ observations of pm25_mass at Lecce (ECO) (IT0015U) using low_vol_sampler" />
  <attribute name="keywords" value="mass_concentration_of_pm2p5_ambient_aerosol_particles_in_air, pm25_mass, Lecce (ECO), GAW-WDCA, pm25, GAW-WDCRG, IT0015U, EMEP" />
  <attribute name="id" value="KR94-2A4Y.nc" />
  <attribute name="naming_authority" value="EBAS" />
  <attribute name="project" value="EMEP, GAW-WDCA, GAW-WDCRG" />
  <attribute name="acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="doi" value="https://doi.org/10.48597/KR94-2A4Y" />
  <attribute name="license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="citation" value="Daniele Contini, Adelaide Dinoi, Daniele Contini, Adelaide Dinoi, Daniele Contini, Adelaide Dinoi, Daniele Contini, Adelaide Dinoi, pm25_mass - low_vol_sampler at Lecce (ECO), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/KR94-2A4Y" />
  <attribute name="summary" value="Ground based in situ observations of pm25_mass at Lecce (ECO) (IT0015U) using low_vol_sampler. These measurements are gathered as a part of the following projects EMEP, GAW-WDCA, GAW-WDCRG and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: pm25_mass in pm25 (mass_concentration_of_pm2p5_ambient_aerosol_particles_in_air)" />
  <attribute name="source" value="surface observation" />
  <attribute name="institution" value="IT06L, Institute of Atmospheric Sciences and Climate, CNR-ISAC, Section of Bologna, Via Gobetti 101, 40129, Bologna, Italy" />
  <attribute name="processing_level" value="processing_level_test" />
  <attribute name="date_created" value="2019-12-05T09:49:48 UTC" />
  <attribute name="date_metadata_modified" value="2019-12-05T09:49:48 UTC" />
  <attribute name="creator_name" value="Daniele Contini, Adelaide Dinoi, Daniele Contini, Adelaide Dinoi, Daniele Contini, Adelaide Dinoi, Daniele Contini, Adelaide Dinoi" />
  <attribute name="creator_type" value="person" />
  <attribute name="creator_email" value="d.contini@isac.cnr.it, a.dinoi@le.isac.cnr.it, d.contini@isac.cnr.it, a.dinoi@le.isac.cnr.it, d.contini@isac.cnr.it, a.dinoi@le.isac.cnr.it, d.contini@isac.cnr.it, a.dinoi@le.isac.cnr.it" />
  <attribute name="creator_institution" value="&quot;CNR-ISAC, Institute of Atmospheric Sciences and Climate, CNR-ISAC&quot;, &quot;CNR-ISAC, Institute of Atmospheric Sciences and Climate, CNR-ISAC&quot;, &quot;CNR-ISAC, Institute of Atmospheric Sciences and Climate, CNR-ISAC&quot;, &quot;CNR-ISAC, Institute of Atmospheric Sciences and Climate, CNR-ISAC&quot;, &quot;CNR-ISAC, Institute of Atmospheric Sciences and Climate, CNR-ISAC&quot;, &quot;CNR-ISAC, Institute of Atmospheric Sciences and Climate, CNR-ISAC&quot;, &quot;CNR-ISAC, Institute of Atmospheric Sciences and Climate, CNR-ISAC&quot;, &quot;CNR-ISAC, Institute of Atmospheric Sciences and Climate, CNR-ISAC&quot;" />
  <attribute name="contributor_name" value="Adelaide Dinoi, Adelaide Dinoi, Adelaide Dinoi, Adelaide Dinoi" />
  <attribute name="contributor_role" value="data submitter, data submitter, 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 (40.3358 18.1245 36.0)" />
  <attribute name="geospatial_bounds_crs" value="EPSG:4979" />
  <attribute name="geospatial_lat_min" type="double" value="40.3358" />
  <attribute name="geospatial_lat_max" type="double" value="40.3358" />
  <attribute name="geospatial_lon_min" type="double" value="18.1245" />
  <attribute name="geospatial_lon_max" type="double" value="18.1245" />
  <attribute name="geospatial_vertical_min" type="double" value="36.0" />
  <attribute name="geospatial_vertical_max" type="double" value="36.0" />
  <attribute name="geospatial_vertical_positive" value="up" />
  <attribute name="time_coverage_start" value="2015-01-01T00:00:00 UTC" />
  <attribute name="time_coverage_end" value="2019-01-01T00:00:00 UTC" />
  <attribute name="time_coverage_duration" value="P0004-00-00T00:00:00" />
  <attribute name="time_coverage_resolution" value="P0000-00-01T00:00:00" />
  <attribute name="timezone" value="UTC" />
  <attribute name="ebas_data_definition" value="EBAS_1.1" />
  <attribute name="ebas_data_license" value="https://creativecommons.org/licenses/by/4.0/" />
  <attribute name="ebas_citation" value="Daniele Contini, Adelaide Dinoi, Daniele Contini, Adelaide Dinoi, Daniele Contini, Adelaide Dinoi, Daniele Contini, Adelaide Dinoi, pm25_mass - low_vol_sampler at Lecce (ECO), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/KR94-2A4Y" />
  <attribute name="ebas_set_type_code" value="TU" />
  <attribute name="ebas_timezone" value="UTC" />
  <attribute name="ebas_file_name" value="KR94-2A4Y.nc" />
  <attribute name="ebas_represents_doi" value="https://doi.org/10.48597/KR94-2A4Y" />
  <attribute name="ebas_contains_doi" value="https://doi.org/10.48597/KR94-2A4Y" />
  <attribute name="ebas_file_creation" value="2023-12-10T08:00:10.954979 UTC" />
  <attribute name="ebas_export_state" value="2019-12-05T09:52:09.697000 UTC" />
  <attribute name="ebas_export_filter" value="exclude-900,exclude-invalid" />
  <attribute name="ebas_startdate" value="20150101000000" />
  <attribute name="ebas_revision_date" value="20191205094948" />
  <attribute name="ebas_version" value="1" />
  <attribute name="ebas_version_description" value="initial revision, automatically and manually inspected" />
  <attribute name="ebas_statistics" value="arithmetic mean" />
  <attribute name="ebas_data_level" value="2" />
  <attribute name="ebas_period_code" value="4y" />
  <attribute name="ebas_resolution_code" value="1d" />
  <attribute name="ebas_sample_duration" value="1d" />
  <attribute name="ebas_orig_time_res" value="1d" />
  <attribute name="ebas_station_code" value="IT0015U" />
  <attribute name="ebas_platform_code" value="IT0015S" />
  <attribute name="ebas_station_name" value="Lecce (ECO)" />
  <attribute name="ebas_station_wdca_id" value="GAWAIT__ECO" />
  <attribute name="ebas_station_gaw_id" value="ECO" />
  <attribute name="ebas_station_gaw_name" value="Lecce Environmental-Climate Observatory" />
  <attribute name="ebas_station_land_use" value="Commercial" />
  <attribute name="ebas_station_setting" value="Suburban" />
  <attribute name="ebas_station_gaw_type" value="R" />
  <attribute name="ebas_station_wmo_region" value="6" />
  <attribute name="ebas_station_latitude" value="40.3358" />
  <attribute name="ebas_station_longitude" value="18.1245" />
  <attribute name="ebas_station_altitude" value="36.0 m" />
  <attribute name="ebas_regime" value="IMG" />
  <attribute name="ebas_component" value="pm25_mass" />
  <attribute name="ebas_unit" value="ug/m3" />
  <attribute name="ebas_matrix" value="pm25" />
  <attribute name="ebas_laboratory_code" value="IT06L" />
  <attribute name="ebas_instrument_type" value="low_vol_sampler" />
  <attribute name="ebas_instrument_name" value="Fai_DUAL.Channel_ECO_pm25" />
  <attribute name="ebas_instrument_manufacturer" value="FAI Instruments" />
  <attribute name="ebas_instrument_model" value="SWAM 5A Dual Channel" />
  <attribute name="ebas_method_ref" value="IT06L_pm25_dual" />
  <attribute name="ebas_inlet_description" value="PM25 at ambient humidity inlet, deliverd with sampler, flow 2.3 m3/h" />
  <attribute name="ebas_medium" value="Quartz" />
  <attribute name="ebas_humidity_temperaure_control" value="None" />
  <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head" />
  <attribute name="ebas_organization" value="IT06L, Institute of Atmospheric Sciences and Climate, CNR-ISAC, Section of Bologna, Via Gobetti 101, , 40129, Bologna, Italy" />
  <attribute name="ebas_originator" value="Dinoi, Adelaide, a.dinoi@le.isac.cnr.it, CNR-ISAC, CNR-ISAC, Institute of Atmospheric Sciences and Climate, , Via Gobetti 101, 40129, Bologna, Italy" />
  <attribute name="ebas_submitter" value="Dinoi, Adelaide, a.dinoi@le.isac.cnr.it, CNR-ISAC, CNR-ISAC, Institute of Atmospheric Sciences and Climate, , Via Gobetti 101, 40129, Bologna, Italy" />
  <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  <attribute name="_NCProperties" value="version=2,netcdf=4.9.0,hdf5=1.12.2" />
  <attribute name="Metadata_Conventions" value="Unidata Dataset Discovery v1.0" />
  <attribute name="geospatial_lat_units" value="degrees_north" />
  <attribute name="geospatial_lon_units" value="degrees_east" />
  <attribute name="comment" value="{&#xA;    &quot;Data definition&quot;: &quot;EBAS_1.1&quot;,&#xA;    &quot;Data license&quot;: &quot;https://creativecommons.org/licenses/by/4.0/&quot;,&#xA;    &quot;Citation&quot;: &quot;Daniele Contini, Adelaide Dinoi, Daniele Contini, Adelaide Dinoi, Daniele Contini, Adelaide Dinoi, Daniele Contini, Adelaide Dinoi, pm25_mass - low_vol_sampler at Lecce (ECO), data hosted by EBAS at NILU, DOI: https://doi.org/10.48597/KR94-2A4Y&quot;,&#xA;    &quot;Set type code&quot;: &quot;TU&quot;,&#xA;    &quot;Timezone&quot;: &quot;UTC&quot;,&#xA;    &quot;File name&quot;: &quot;KR94-2A4Y.nc&quot;,&#xA;    &quot;Represents DOI&quot;: &quot;https://doi.org/10.48597/KR94-2A4Y&quot;,&#xA;    &quot;Contains data from DOI&quot;: &quot;https://doi.org/10.48597/KR94-2A4Y&quot;,&#xA;    &quot;File creation&quot;: &quot;2023-12-10T08:00:10.954979 UTC&quot;,&#xA;    &quot;Export state&quot;: &quot;2019-12-05T09:52:09.697000 UTC&quot;,&#xA;    &quot;Export filter&quot;: &quot;exclude-900,exclude-invalid&quot;,&#xA;    &quot;Startdate&quot;: &quot;20150101000000&quot;,&#xA;    &quot;Revision date&quot;: &quot;20191205094948&quot;,&#xA;    &quot;Version&quot;: &quot;1&quot;,&#xA;    &quot;Version description&quot;: &quot;initial revision, automatically and 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;4y&quot;,&#xA;    &quot;Resolution code&quot;: &quot;1d&quot;,&#xA;    &quot;Sample duration&quot;: &quot;1d&quot;,&#xA;    &quot;Orig. time res.&quot;: &quot;1d&quot;,&#xA;    &quot;Station code&quot;: &quot;IT0015U&quot;,&#xA;    &quot;Platform code&quot;: &quot;IT0015S&quot;,&#xA;    &quot;Station name&quot;: &quot;Lecce (ECO)&quot;,&#xA;    &quot;Station WDCA-ID&quot;: &quot;GAWAIT__ECO&quot;,&#xA;    &quot;Station GAW-ID&quot;: &quot;ECO&quot;,&#xA;    &quot;Station GAW-Name&quot;: &quot;Lecce Environmental-Climate Observatory&quot;,&#xA;    &quot;Station land use&quot;: &quot;Commercial&quot;,&#xA;    &quot;Station setting&quot;: &quot;Suburban&quot;,&#xA;    &quot;Station GAW type&quot;: &quot;R&quot;,&#xA;    &quot;Station WMO region&quot;: &quot;6&quot;,&#xA;    &quot;Station latitude&quot;: &quot;40.3358&quot;,&#xA;    &quot;Station longitude&quot;: &quot;18.1245&quot;,&#xA;    &quot;Station altitude&quot;: &quot;36.0 m&quot;,&#xA;    &quot;Regime&quot;: &quot;IMG&quot;,&#xA;    &quot;Component&quot;: &quot;pm25_mass&quot;,&#xA;    &quot;Unit&quot;: &quot;ug/m3&quot;,&#xA;    &quot;Matrix&quot;: &quot;pm25&quot;,&#xA;    &quot;Laboratory code&quot;: &quot;IT06L&quot;,&#xA;    &quot;Instrument type&quot;: &quot;low_vol_sampler&quot;,&#xA;    &quot;Instrument name&quot;: &quot;Fai_DUAL.Channel_ECO_pm25&quot;,&#xA;    &quot;Instrument manufacturer&quot;: &quot;FAI Instruments&quot;,&#xA;    &quot;Instrument model&quot;: &quot;SWAM 5A Dual Channel&quot;,&#xA;    &quot;Method ref&quot;: &quot;IT06L_pm25_dual&quot;,&#xA;    &quot;Inlet description&quot;: &quot;PM25 at ambient humidity inlet, deliverd with sampler, flow 2.3 m3/h&quot;,&#xA;    &quot;Medium&quot;: &quot;Quartz&quot;,&#xA;    &quot;Humidity/temperature control&quot;: &quot;None&quot;,&#xA;    &quot;Humidity/temperature control description&quot;: &quot;filter kept at ambient conditions together with sampling head&quot;,&#xA;    &quot;Organization&quot;: &quot;IT06L, Institute of Atmospheric Sciences and Climate, CNR-ISAC, Section of Bologna, Via Gobetti 101, , 40129, Bologna, Italy&quot;,&#xA;    &quot;Originator&quot;: &quot;Dinoi, Adelaide, a.dinoi@le.isac.cnr.it, CNR-ISAC, CNR-ISAC, Institute of Atmospheric Sciences and Climate, , Via Gobetti 101, 40129, Bologna, Italy&quot;,&#xA;    &quot;Submitter&quot;: &quot;Dinoi, Adelaide, a.dinoi@le.isac.cnr.it, CNR-ISAC, CNR-ISAC, Institute of Atmospheric Sciences and Climate, , Via Gobetti 101, 40129, Bologna, Italy&quot;,&#xA;    &quot;Acknowledgement&quot;: &quot;Request acknowledgement details from data originator&quot;&#xA;}" />
  <attribute name="standard_name_vocabulary" value="CF-1.7, ACDD-1.3" />
  <attribute name="history" value="None" />
  <attribute name="creator_url" value="ebas.nilu.no" />
  <attribute name="_CoordSysBuilder" value="ucar.nc2.internal.dataset.conv.CF1Convention" />
  <dimension name="time" length="1461" />
  <dimension name="tbnds" length="2" />
  <dimension name="metadata_time" length="4" />
  <dimension name="pm25_mass_qc_flags" length="1" />
  <group name="CFMetadata">
    <attribute name="time_coverage_start" value="2015-01-01T12:00:00Z" />
    <attribute name="time_coverage_end" value="2018-12-31T12:00:00Z" />
    <attribute name="time_coverage_units" value="seconds" />
    <attribute name="time_coverage_resolution" value="86400.0" />
    <attribute name="time_coverage_duration" value="P0Y0M1460DT0H0M0.000S" />
  </group>
  <group name="NCISOMetadata">
    <attribute name="metadata_creation" value="2026-05-17" />
    <attribute name="nciso_version" value="2.4.8" />
  </group>
  <variable name="time_bnds" shape="time tbnds" type="double">
    <attribute name="long_name" value="time bounds for measurement" />
  </variable>
  <variable name="metadata_time_bnds" shape="metadata_time tbnds" type="double">
    <attribute name="long_name" value="time bounds for ebas metadata intervals" />
  </variable>
  <variable name="pm25_mass" shape="time" type="double">
    <attribute name="_FillValue" type="double" value="NaN" />
    <attribute name="standard_name" value="mass_concentration_of_pm2p5_ambient_aerosol_particles_in_air" />
    <attribute name="missing_value" type="double" value="NaN" />
    <attribute name="units" value="ug/m3" />
    <attribute name="ancillary_variables" value="pm25_mass_qc pm25_mass_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="20191205094948" />
    <attribute name="ebas_version" value="1" />
    <attribute name="ebas_version_description" value="initial revision, automatically and manually inspected" />
    <attribute name="ebas_statistics" value="arithmetic mean" />
    <attribute name="ebas_data_level" value="2" />
    <attribute name="ebas_sample_duration" value="1d" />
    <attribute name="ebas_orig_time_res" value="1d" />
    <attribute name="ebas_station_code" value="IT0015U" />
    <attribute name="ebas_platform_code" value="IT0015S" />
    <attribute name="ebas_station_name" value="Lecce (ECO)" />
    <attribute name="ebas_station_wdca_id" value="GAWAIT__ECO" />
    <attribute name="ebas_station_gaw_id" value="ECO" />
    <attribute name="ebas_station_gaw_name" value="Lecce Environmental-Climate Observatory" />
    <attribute name="ebas_station_land_use" value="Commercial" />
    <attribute name="ebas_station_setting" value="Suburban" />
    <attribute name="ebas_station_gaw_type" value="R" />
    <attribute name="ebas_station_wmo_region" value="6" />
    <attribute name="ebas_station_latitude" value="40.3358" />
    <attribute name="ebas_station_longitude" value="18.1245" />
    <attribute name="ebas_station_altitude" value="36.0 m" />
    <attribute name="ebas_regime" value="IMG" />
    <attribute name="ebas_component" value="pm25_mass" />
    <attribute name="ebas_unit" value="ug/m3" />
    <attribute name="ebas_matrix" value="pm25" />
    <attribute name="ebas_laboratory_code" value="IT06L" />
    <attribute name="ebas_instrument_type" value="low_vol_sampler" />
    <attribute name="ebas_instrument_name" value="Fai_DUAL.Channel_ECO_pm25" />
    <attribute name="ebas_instrument_manufacturer" value="FAI Instruments" />
    <attribute name="ebas_instrument_model" value="SWAM 5A Dual Channel" />
    <attribute name="ebas_method_ref" value="IT06L_pm25_dual" />
    <attribute name="ebas_inlet_description" value="PM25 at ambient humidity inlet, deliverd with sampler, flow 2.3 m3/h" />
    <attribute name="ebas_medium" value="Quartz" />
    <attribute name="ebas_humidity_temperaure_control" value="None" />
    <attribute name="ebas_humidity_temperaure_control_description" value="filter kept at ambient conditions together with sampling head" />
    <attribute name="ebas_organization" value="IT06L, Institute of Atmospheric Sciences and Climate, CNR-ISAC, Section of Bologna, Via Gobetti 101, , 40129, Bologna, Italy" />
    <attribute name="ebas_acknowledgement" value="Request acknowledgement details from data originator" />
  </variable>
  <variable name="pm25_mass_qc" shape="pm25_mass_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="pm25_mass_ebasmetadata" shape="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>
</netcdf>
