Indoor–Outdoor Relationships of Particle Number and Mass in European Cities

2013 ◽  
pp. 321-337 ◽  
Author(s):  
Gerard Hoek ◽  
Otto Hänninen ◽  
Josef Cyrys
Keyword(s):  
Particle Number ◽  
European Cities

scholarly journals Modelling the dispersion of particle numbers in five European cities

2016 ◽  
Vol 9 (2) ◽  
pp. 451-478 ◽  
Author(s):  
J. Kukkonen ◽  
M. Karl ◽  
M. P. Keuken ◽  
H. A. C. Denier van der Gon ◽  
B. R. Denby ◽  
...  
Keyword(s):  
Particle Number ◽  
Atmospheric Dispersion ◽  
Emission Inventories ◽  
Vehicular Traffic ◽  
Background Concentrations ◽  
Reasonable Accuracy ◽  
Annual Average ◽  
Urban Background ◽  
European Cities ◽  
Regional Background

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.

Characterization of parameters influencing the spatio-temporal variability of urban particle number size distributions in four European cities

2013 ◽  
Vol 77 ◽  
pp. 415-429 ◽  
Author(s):  
Clemens von Bismarck-Osten ◽  
Wolfram Birmili ◽  
Matthias Ketzel ◽  
Andreas Massling ◽  
Tuukka Petäjä ◽  
...  
Keyword(s):  
Temporal Variability ◽  
Particle Number ◽  
Size Distributions ◽  
European Cities ◽  
Spatio Temporal

Evaluation of a statistical forecast model for size-fractionated urban particle number concentrations using data from five European cities

2013 ◽  
Vol 66 ◽  
pp. 96-110 ◽  
Author(s):  
Bjarke Mølgaard ◽  
Wolfram Birmili ◽  
Sam Clifford ◽  
Andreas Massling ◽  
Kostas Eleftheriadis ◽  
...  
Keyword(s):  
Particle Number ◽  
Forecast Model ◽  
European Cities ◽  
Using Data

scholarly journals Associations between sources of particle number and mortality in four European cities

2021 ◽  
Vol 155 ◽  
pp. 106662
Author(s):  
Ioar Rivas ◽  
Laia Vicens ◽  
Xavier Basagaña ◽  
Aurelio Tobías ◽  
Klea Katsouyanni ◽  
...  
Keyword(s):  
Particle Number ◽  
European Cities

Indoor–outdoor relationships of particle number and mass in four European cities

2008 ◽  
Vol 42 (1) ◽  
pp. 156-169 ◽  
Author(s):  
Gerard Hoek ◽  
Gerard Kos ◽  
Roy Harrison ◽  
Jeroen de Hartog ◽  
Kees Meliefste ◽  
...  
Keyword(s):  
Particle Number ◽  
European Cities

Short-term associations between traffic-related noise, particle number and traffic flow in three European cities

2015 ◽  
Vol 103 ◽  
pp. 25-33 ◽  
Author(s):  
X. Morelli ◽  
M. Foraster ◽  
I. Aguilera ◽  
X. Basagana ◽  
E. Corradi ◽  
...  
Keyword(s):  
Traffic Flow ◽  
Particle Number ◽  
Short Term ◽  
European Cities

scholarly journals Modelling the dispersion of particle numbers in five European cities

2015 ◽  
Vol 8 (7) ◽  
pp. 5873-5930 ◽  
Author(s):  
J. Kukkonen ◽  
M. Karl ◽  
M. P. Keuken ◽  
H. A. C. Denier van der Gon ◽  
B. R. Denby ◽  
...  
Keyword(s):  
Dry Deposition ◽  
Particle Number ◽  
Atmospheric Dispersion ◽  
Emission Inventories ◽  
Vehicular Traffic ◽  
Dispersion Modelling ◽  
Annual Average ◽  
Urban Background ◽  
European Cities ◽  
Atmospheric Dispersion Modelling

Abstract. We present an overview of the modelling of particle number concentrations (PNC's) 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 use atmospheric dispersion modelling for PNC's in the five target cities and on a European scale, and evaluate the predicted results against available measured concentrations. The concentrations of PN in the selected cities were mostly influenced by the emissions originated from local vehicular traffic; however, in some of the cities, also harbour and airport activities were significant. The highest values of the predicted PNC's were higher in the megacities, London and Athens, and also in Rotterdam, whereas these were lower in Helsinki and Oslo. It was numerically evaluated that the influence of coagulation and dry deposition on the predicted PNC's was substantial for urban background in Oslo. The predicted and measured annual average PNC's in four cities agreed within approximately ≤ 36 % (measured as fractional biases), except for one traffic station in London. The indexes of agreement (IA) for the comparisons of hourly measured and predicted time-series in Oslo and Helsinki ranged from 0.75 to 0.79.

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