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 PM_2.5. Air mass origin was a secondary influence on NPF, largely through its association with meteorological conditions. Neither a strong dependence on the PM_2.5 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