Author(s)

J.L. Polo & J. Barquin

Abstract

The purpose of this paper is an estimation of the concentration of pollutants above the terrain surface based on lagrangian random walk model. Firstly, an estimation of wind fields in a region of interest using the continuity equation, known vertical profile of wind (modelled by an Ekman spiral and ground parametrized modulus profile) and known density is presented. A diagnostic model' based on a proposed merit function which uses the conservation of mass and knowledge of n measurements of the wind field within the region is derived. The model, of reduced order, is then solved by using variational calculus and finite differences. In the second section a Lagrangian model is presented. It is based on stochastic differential equations". It is necessary to relate the parameters of the stochastic d

Keywords