Seasonality of New Particle Formation in Vienna, Austria - Influence of Air Mass Origin and Aerosol Chemical Composition

0446562 - ÚCHP 2016 RIV GB eng J - Článek v odborném periodiku
Wonaschütz, A. - Demattio, A. - Wagner, R. - Burkart, J. - Zíková, Naděžda - Vodička, Petr - Ludwig, W. - Steiner, G. - Schwarz, Jaroslav - Hitzenberger, R.
Seasonality of New Particle Formation in Vienna, Austria - Influence of Air Mass Origin and Aerosol Chemical Composition.
Atmospheric Environment. Roč. 118, OCT 2015 (2015), s. 118-126. ISSN 1352-2310. E-ISSN 1873-2844
Grant CEP: GA MŠMT 7AMB12AT021; GA ČR(CZ) GBP503/12/G147
Grant ostatní: FWF(AT) P19515-N20
Institucionální podpora: RVO:67985858
Klíčová slova: urban aerosol * aerosol chemical composition * new particle formation
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
Impakt faktor: 3.459, rok: 2015

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 shortterm 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 mm) and the mass size distribution, and less important for chemical composition of the fine fraction (<1.5 mm). 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.
Trvalý link: http://hdl.handle.net/11104/0250264