Comparison of atmospheric new particle formation events in three Central European cities

Autor(en)

Zoltán Németh, Bernadette Rosati, Naděžda Zíková, Imre Salma, László Bozó, Carmen Dameto de España, Jaroslav Schwarz, Vladimír Ždímal, Anna Wonaschütz

Abstrakt

Simultaneous particle number size distribution measurements were performed in the urban environment of Budapest, Vienna, and Prague, three Central European cities located within 450 km of each other. The measurement days from the continuous, 2-year long campaign were classified for new particle formation (NPF) events using an adapted classification scheme for urban sites. The total numbers of NPF event days were 152 for Budapest, 69 for Vienna, and 143 for Prague. There were 12 days when new particle formation took place at all three sites, and 11 out of these 12 days were in spring and in summer. There were only 2 (Budapest-Vienna), 19 (Budapest-Prague), and 19 (Vienna-Prague) nucleation days, when NPF did not occur on the third site. The main difference was related to source and sink terms of gas-phase sulphuric acid. Air mass origin and back-trajectories did not show any substantial influence on the atmospheric nucleation phenomena. The relative contribution of particles from NPF with respect to regional aerosol to the particles originating from all sources was expressed as nucleation strength factor. The overall mean nucleation strength factors were 1.58, 1.54, and 2.01 for Budapest, Vienna, and Prague, respectively, and showed diurnal and seasonal variations. The monthly mean NSF varied from 1.2 to 3.2 in Budapest, from 0.7 to 1.9 in Vienna, and from 1.0 to 2.3 in Prague. This implies that the new particle formation in cities is a significant source of ultrafine (UF) particles, and the amount of them is comparable to the directly emitted UF particles.

Organisation(en)

Aerosolphysik und Umweltphysik

Externe Organisation(en)

Eötvös Loránd University Budapest, Aarhus University, Czech Academy of Sciences, Országos Meteorológiai Szolgálat

Journal

Atmospheric Environment

Band

178

Seiten

191-197

Anzahl der Seiten

7

ISSN

1352-2310

DOI

https://doi.org/10.1016/j.atmosenv.2018.01.035

Publikationsdatum

01-2018

Peer-reviewed

Ja

ÖFOS 2012

105204 Klimatologie, 105904 Umweltforschung, 103039 Aerosolphysik, 105206 Meteorologie

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeine Umweltwissenschaft, Atmospheric Science

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/1cf08d71-f699-46dc-adbe-054da9e35ce4