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Titel |
Carbonaceous aerosols in the Western Mediterranean during summertime and their contribution to the aerosol optical properties at ground level: First results of the ChArMEx-ADRIMED 2013 intensive campaign in Corsica |
VerfasserIn |
Jean Sciare, François Dulac, Anaïs Féron, Vincent Crenn, Roland Sarda Estève, Dominique Baisnee, Nicolas Bonnaire, Eric Hamonou, Marc Mallet, Dominique Lambert, José B. Nicolas, Thierry Bourrianne, Jean-Eudes Petit, Olivier Favez, Francesco Canonaco, André Prévôt, Griša Močnik, Luka Drinovec, Alexandre Marpillat, Wilfrid Serrie |
Konferenz |
EGU General Assembly 2014
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Medientyp |
Artikel
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Sprache |
Englisch
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Digitales Dokument |
PDF |
Erschienen |
In: GRA - Volume 16 (2014) |
Datensatznummer |
250088270
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Publikation (Nr.) |
EGU/EGU2014-2358.pdf |
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Zusammenfassung |
As part of the Chemistry-Aerosol Mediterranean Experiment (ChArMEx,
http://charmex.lsce.ipsl.fr/), the CORSiCA (http://www.obs-mip.fr/corsica) and the
ANR-ADRIMED programs, a large set of real-time measurements of carbonaceous
aerosols was deployed in June 2013 at the Cape Corsica atmospheric supersite
(http://gaw.empa.ch/gawsis/reports.asp?StationID=2076203042).
Submicron organic aerosols (OA) were monitored every 30 min using an Aerosol
Chemical Speciation Monitor (ACSM; Aerodyne Res. Inc. MA, USA); Fine (PM2.5) Organic
Carbon (OC) and Elemental Carbon (EC) were measured every 2h using an OCEC Sunset
Field Instrument (Sunset Lab, OR, USA) and every 12h using a low-vol (Leckel) filter
sampler running at 2.3m3/h. Equivalent Black Carbon (BC) was monitored using two
Aethalometers (models AE31 and AE33, Magee Scientific, US & Aerosol d.o.o., Slovenia)
and a MAAP instrument (Thermo).
Quality control of this large dataset was performed through chemical mass closure studies
(using co-located SMPS and TEOM-FDMS) and direct comparisons with other real-time
instruments running in parallel (Particle-Into-Liquid-Sampler-Ion-Chromatograph for ions,
filter sampling, -¦).
Source apportionment of OA was then performed using the SourceFinder software
(SoFi v4.5, http://www.psi.ch/acsm-stations/me-2) allowing the distinction between
hydrogen- and oxygen-like organic aerosols (HOA and OOA, respectively) and
highlighting the major contribution of secondary OA in the Western Mediterranean during
summer.
Using this time-resolved chemical information, reconstruction of the optical aerosol
properties were performed and compared with integrating nephelometer (Model 3563, TSI,
US) and photoacoustic extinctiometer (PAX, DMT, US) measurements performed in
parallel.
Results of these different closure studies (chemical/physical/optical) are presented and
discussed here in details. They highlight the central role of carbonaceous aerosols on the
optical properties of aerosols at ground level in the Western Mediterranean Sea during
summertime.
Acknowledgements: Aerosol measurements performed at Cape Corsica Station were
mainly funded by ANR, CNRS-INSU, ADEME, Collectivité Territoriale de Corse through
EU-FEDER Operational program 2007-2013, CEA, METEO-FRANCE, MGR-KROP,
AEROSOL D.O.O., ECOMESURE, and ENVICONTROL |
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