WIT Press

Modelling Of Air Pollution Transport Over A Patchwork Of Surface Features

Price

Free (open access)

Paper DOI

10.2495/AIR940101

Volume

3

Pages

8

Published

1994

Size

556 kb

Author(s)

J. Levitin

Abstract

Modelling of air pollution transport over a patchwork of surface features J. Levitin Department of Research, Israel Meteorological Service, P.O. Box 25, Bet Dagan, Israel ABSTRACT The numerical model of pollution transport over a nonhomogeneous earth surface is presented. The model is based on the semi - empirical theory of the atmospheric bounder layer (ABL). Pollu- tion transport is described by the turbulent diffusion equation. In this equation vertical profiles of diffusivity and wind speed are modified under the influence of the temperature and rough- ness discontinuity between different surfaces. Such modification of the ABL parameters is interpreted as an internal boundary layer (IBL). Computed results for two typical examples are given, namely formation of a convective IBL in a coastal area and a stable IBL under land-water transition. INTRODUCTION The transport processes of air pollution over a nonhomogeneo

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