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Simulation of traffic induced air pollution on regional to local scales
Published May 31, 1999 by Technical University of Graz in Austria
The order to consider regional atmospheric transport and air chemistry in local scale air pollution simulations sufficiently, the model system CARLOS (Chemistry and Atmospheric transport in Regional and Local Scale) has been developed. The system has been applied to a photochemical smog episode in summer 1997. Multiple nested simulations from European scale to the city of Wuppertal, Germany were carried out. The emission inventory for Wuppertal is based on microscopic traffic flow simulations. The simulated concentration pattern in Wuppertal is strongly influenced by local effects like terrain and emission structure as well as by larger scale factors such as urban plumes of cities nearby. The comparison with observations shows the ability of CARLOS to resolve most relevant effects on the evolution of photochemical smog in urban and industrial areas even for non-stationary situations.