Modelling the dispersion of particle numbers in five European cities

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Kukkonen , J , Karl , M , Keuken , M P , van der Gon , H A C D , Denby , B R , Singh , V , Douros , J , Manders , A , Samaras , Z , Moussiopoulos , N , Jonkers , S , Aarnio , M , Karppinen , A , Kangas , L , Lutzenkirchen , S , Petäjä , T , Vouitsis , I & Sokhi , R S 2016 , ' Modelling the dispersion of particle numbers in five European cities ' Geoscientific Model Development , vol. 9 , no. 2 , pp. 451-478 . DOI: 10.5194/gmd-9-451-2016

Title: Modelling the dispersion of particle numbers in five European cities
Author: Kukkonen, J.; Karl, M.; Keuken, M. P.; van der Gon, H. A. C. Denier; Denby, B. R.; Singh, V.; Douros, J.; Manders, A.; Samaras, Z.; Moussiopoulos, N.; Jonkers, S.; Aarnio, M.; Karppinen, A.; Kangas, L.; Lutzenkirchen, S.; Petäjä, T.; Vouitsis, I.; Sokhi, R. S.
Contributor: University of Helsinki, Institute for Atmospheric and Earth System Research
Date: 2016
Language: eng
Number of pages: 28
Belongs to series: Geoscientific Model Development
ISSN: 1991-959X
URI: http://hdl.handle.net/10138/176848
Abstract: We present an overview of the modelling of particle number concentrations (PNCs) in five major European cities, namely Helsinki, Oslo, London, Rotterdam, and Athens, in 2008. Novel emission inventories of particle numbers have been compiled both on urban and European scales. We used atmospheric dispersion modelling for PNCs in the five target cities and on a European scale, and evaluated the predicted results against available measured concentrations. In all the target cities, the concentrations of particle numbers (PNs) were mostly influenced by the emissions originating from local vehicular traffic. The influence of shipping and harbours was also significant for Helsinki, Oslo, Rotterdam, and Athens, but not for London. The influence of the aviation emissions in Athens was also notable. The regional background concentrations were clearly lower than the contributions originating from urban sources in Helsinki, Oslo, and Athens. The regional background was also lower than urban contributions in traffic environments in London, but higher or approximately equal to urban contributions in Rotterdam. It was numerically evaluated that the influence of coagulation and dry deposition on the predicted PNCs was substantial for the urban background in Oslo. The predicted and measured annual average PNCs in four cities agreed within approximately
Subject: CONCENTRATION MEASUREMENTS NEARBY
TRANSBOUNDARY AIR-POLLUTION
BLACK CARBON CONCENTRATIONS
ULTRAFINE PARTICLES
SIZE DISTRIBUTIONS
MAJOR ROAD
NANOPARTICLE EMISSIONS
PARTICULATE MATTER
URBAN AREA
INTERNATIONAL-AIRPORT
1171 Geosciences
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