A simple air pollution dispersion model developed in different real urban street canyons

This work presents the development and evaluation of an operational model (Semi-Empirical Urban Street (SEUS)) to estimate the passive pollutants concentration in air within urban canyons. The model depends on vehicular emission, canyon width, urban background concentration and natural and vehicular induced turbulence. SEUS is evaluated with observational information from three real urban canyons in the cities of Birmingham (England), Copenhagen (Denmark) and Buenos Aires (Argentina). The different scatter plots between the estimated and observed concentrations and statistical indicators show that the model, which require few input data and has the advantage of being very simple to operate, is adequately developed.