Author(s)

J.R. Varela, R.M. Velasco & C. Reyes

Abstract

Photochemistry and diffusion in Mexico City scenarios J.R. Varela", R.M. Velasco\ C. Reyes" ^Departamento de Ingenieria de Procesos e Hidrdulica, ^Departamento de Fisica, ^Graduate Student, Universidad Autonoma Metropolitana, ABSTRACT Photohemistry, turbulent diffusion and the climate conditions are strongly coupled in the dynamic behavior of a polluted atmosphere. In this work we have constructed a computational package to consider the time evolution of some important pollutant species in Mexico City. To solve the species equations we consider the CBM4M photochemical mech- anism as well as a model for the turbulent diffusivity. Climate conditions such as the average wind velocity and the emission sources are taken from the experimental information. The program structure allows us to con- sider the different models as independent moduli in order to change them according to the actual situation. INTRODUCTION Air quality models require the knowledge of several chara

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