Simulations of atmospheric dispersion in an urban stable boundary layer
by E. Ferrero, D. Anfossi, G. Tinarelli
International Journal of Environment and Pollution (IJEP), Vol. 16, No. 1/2/3/4/5/6, 2001

Abstract: The results of numerical simulations of tracer dispersion in an urban stable boundary layer are presented. Both Gaussian approximation and fourth order closure are considered and a Gram-Charlier probability density function is used in our Lagrangian stochastic model. Different parameterisations for the boundary-layer height and different values of kurtosis are tested. The model is based on the generalised Langevin equation, whose coefficients are solution of the Fokker-Planck equation and plume rise is taken into account. The model accuracy is assessed by means of a model evaluation based on the predicted and observed crosswind integrated concentrations, maximum on the arc and standard deviation of the crosswind concentration distribution on the arc.

Online publication date: Fri, 18-Jul-2003

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