Organic aerosol components derived from 25 AMS datasets across Europe using a newly developed ME-2 based source apportionment strategy
Author:
Crippa M., Canonaco F., Lanz V. A., Äijälä M., Allan J. D.ORCID, Carbone S., Capes G., Dall'Osto M., Day D. A., DeCarlo P. F.ORCID, Di Marco C. F.ORCID, Ehn M.ORCID, Eriksson A., Freney E.ORCID, Hildebrandt Ruiz L., Hillamo R., Jimenez J.-L.ORCID, Junninen H.ORCID, Kiendler-Scharr A.ORCID, Kortelainen A.-M., Kulmala M.ORCID, Mensah A. A.ORCID, Mohr C.ORCID, Nemitz E.ORCID, O'Dowd C., Ovadnevaite J., Pandis S. N., Petäjä T.ORCID, Poulain L.ORCID, Saarikoski S., Sellegri K., Swietlicki E.ORCID, Tiitta P.ORCID, Worsnop D. R., Baltensperger U., Prévôt A. S. H.
Abstract
Abstract. Organic aerosols (OA) represent one of the major constituents of submicron particulate matter (PM1) and comprise a huge variety of compounds emitted by different sources. Three intensive measurement field campaigns to investigate the aerosol chemical composition all over Europe were carried out within the framework of EUCAARI and the intensive campaigns of EMEP during 2008 (May–June and September–October) and 2009 (February–March). In this paper we focus on the identification of the main organic aerosol sources and we propose a standardized methodology to perform source apportionment using positive matrix factorization (PMF) with the multilinear engine (ME-2) on Aerodyne aerosol mass spectrometer (AMS) data. Our source apportionment procedure is tested and applied on 25 datasets accounting for urban, rural, remote and high altitude sites and therefore it is likely suitable for the treatment of AMS-related ambient datasets. For most of the sites, four organic components are retrieved, improving significantly previous source apportionment results where only a separation in primary and secondary OA sources was possible. Our solutions include two primary OA sources, i.e. hydrocarbon-like OA (HOA) and biomass burning OA (BBOA) and two secondary OA components, i.e. semi-volatile oxygenated OA (SV-OOA) and low-volatility oxygenated OA (LV-OOA). For specific sites cooking-related (COA) and marine-related sources (MSA) are also separated. Finally, our work provides a large overview of organic aerosol sources in Europe and an interesting set of highly time resolved data for modeling evaluation purposes.
Publisher
Copernicus GmbH
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