Journal cover Journal topic
Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 4.252 IF 4.252
  • IF 5-year value: 4.890 IF 5-year 4.890
  • CiteScore value: 4.49 CiteScore 4.49
  • SNIP value: 1.539 SNIP 1.539
  • SJR value: 2.404 SJR 2.404
  • IPP value: 4.28 IPP 4.28
  • h5-index value: 40 h5-index 40
  • Scimago H index value: 51 Scimago H index 51
Volume 9, issue 2
Geosci. Model Dev., 9, 451-478, 2016
https://doi.org/10.5194/gmd-9-451-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Geosci. Model Dev., 9, 451-478, 2016
https://doi.org/10.5194/gmd-9-451-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Development and technical paper 04 Feb 2016

Development and technical paper | 04 Feb 2016

Modelling the dispersion of particle numbers in five European cities

J. Kukkonen1, M. Karl2, M. P. Keuken3, H. A. C. Denier van der Gon3, B. R. Denby4,9, V. Singh5,10, J. Douros6, A. Manders3, Z. Samaras6, N. Moussiopoulos6, S. Jonkers3, M. Aarnio1, A. Karppinen1, L. Kangas1, S. Lützenkirchen7, T. Petäjä8, I. Vouitsis6, and R. S. Sokhi5 J. Kukkonen et al.
  • 1Finnish Meteorological Institute, Helsinki, Finland
  • 2Helmholtz-Zentrum Geesthacht, Institute of Coastal Research, Geesthacht, Germany
  • 3TNO, Netherlands Organization for Applied Research, Utrecht, the Netherlands
  • 4Norwegian Institute for Air Research, Kjeller, Norway
  • 5Centre for Atmospheric and Instrumentation Research (CAIR), University of Hertfordshire, Hatfield, UK
  • 6Aristotle University of Thessaloniki, Thessaloniki, Greece
  • 7City of Oslo – Agency for Urban Environment, Oslo, Norway
  • 8University of Helsinki, Helsinki, Finland
  • 9Norwegian Meteorological Institute, Oslo, Norway
  • 10National Atmospheric Research Laboratory, Gadanki, Andhra Pradesh, India

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  ≤ 26% (measured as fractional biases), except for one traffic station in London. This study indicates that it is feasible to model PNCs in major cities within a reasonable accuracy, although major challenges remain in the evaluation of both the emissions and atmospheric transformation of PNCs.

Publications Copernicus
Download
Short summary
For analyzing the health effects of particulate matter, it is necessary to consider not only the mass of particles, but also their sizes and composition. A simple measure for the former is the number concentration of particles. We present particle number concentrations in five major European cities, namely Helsinki, Oslo, London, Rotterdam, and Athens, in 2008, based mainly on modelling. The concentrations of PN were mostly influenced by the emissions from local vehicular traffic.
For analyzing the health effects of particulate matter, it is necessary to consider not only the...
Citation
Share