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Seasonality of new particle formation in Vienna, Austria - Influence of air mass origin and aerosol chemical composition

Autor(en)
Anna Wonaschütz, Anselm Demattio, Robert Wagner, Julia Burkart, Nadezda Zikova, Petr Vodicka, Wolfgang Ludwig, Gerhard Steiner, Jaroslav Schwarz, Regina Hitzenberger
Abstrakt

The impact of air mass origin and season on aerosol chemical composition and new particle formation and growth events (NPF events) in Vienna, Austria, is investigated using impactor samples from short-term campaigns and two long-term number size distribution datasets. The results suggest that air mass origin is most important for bulk PM concentrations, chemical composition of the coarse fraction (>1.5 μm) and the mass size distribution, and less important for chemical composition of the fine fraction (<1.5 μm). Continental air masses (crustal elements) were distinguished from air masses of marine origin (traces of sea salt). NPF events were most frequent in summer (22% of measurement days), and least frequent in winter (3% of measurement days). They were associated with above-average solar radiation and ozone concentrations, but were largely independent of PM2.5. Air mass origin was a secondary influence on NPF, largely through its association with meteorological conditions. Neither a strong dependence on the PM2.5 loading of the air masses, nor indications of a source area for NPF precursors outside the city were found.

Organisation(en)
Aerosolphysik und Umweltphysik
Externe Organisation(en)
University of Toronto, Czech Academy of Sciences, Leopold-Franzens-Universität Innsbruck, University of Helsinki, Universität Wien
Journal
Atmospheric Environment
Band
118
Seiten
118-126
Anzahl der Seiten
9
ISSN
1352-2310
DOI
https://doi.org/10.1016/j.atmosenv.2015.07.035
Publikationsdatum
10-2015
Peer-reviewed
Ja
ÖFOS 2012
103037 Umweltphysik, 103039 Aerosolphysik
Schlagwörter
ASJC Scopus Sachgebiete
Allgemeine Umweltwissenschaft, Atmospheric Science
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/c716232d-43d8-47d0-bca2-5b05665ae21c