On the correlation of atmospheric aerosol components of mass size distributions in the larger region of a central European city

Autor(en)

Axel Berner, Zsuzsanna Galambos, Peter Ctyroky, Peter Frühauf, Regina Hitzenberger, Bostjan Gomiscek, Helger Hauck, Othmar Preining, Hans Puxbaum

Abstrakt

Mass size distributions of atmospheric aerosols have been sampled in the region of Vienna, a typical city in central Europe, at an urban and a rural site. The aerosol was collected simultaneously by cascade impactors. Two experiments which had a duration of 4 weeks each, were performed in August 1999 and in January/February 2000. Daily sampling periods were from 8:00 to 20:00, and from 20:00 to 8:00. An evaluation of the mass size distributions is represented in this paper. Emphasis is on the relationships of different aerosol components in a local and a regional context. The main results are as follows. The main components of the atmospheric aerosol are a fine aerosol, the accumulation aerosol, and a coarse aerosol. Specific coarse modes with modal diameters of 4.7œm average and geometric standard deviations of about 3 occur at the urban and at the rural site, some times surprisingly strong. The fine and the coarse modes are very likely related to motor-car traffic. Usually the PM2.5 and PM10 aerosols are regionally strongly correlated. Occasionally, this correlation is effectively disturbed by local and/or regional emissions. Time series of correlation coefficients reveal an episodic character of the atmospheric aerosol. Periods of strong inter-site correlations of PM2.5 and PM10 indicate the dominance and the co-variation of the accumulation aerosols or the dominance and the co-variation of the coarse modes. Œ 2004 Elsevier Ltd. All rights reserved.

Organisation(en)

Institut für Analytische Chemie

Externe Organisation(en)

Universität Wien, Österreichische Akademie der Wissenschaften (ÖAW), Technische Universität Wien

Journal

Atmospheric Environment

Band

38

Seiten

3959-3970

Anzahl der Seiten

12

ISSN

1352-2310

DOI

https://doi.org/10.1016/j.atmosenv.2004.02.056

Publikationsdatum

2004

Peer-reviewed

Ja

ÖFOS 2012

1030 Physik, Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/e7270f26-bd03-409f-9f36-b3e894f40bf9