THREE-DIMENSIONAL TURBULENCE AND EVAPORATION IN THE LOWER ATMOSPHERE, II

Abstract

This paper gives a determination of a power law for the variation of the coefficient of lateral diffusivity with height above ground, and contains a discussion of the application of a previously used law to evaporation problems. The index in the power law is determined by comparison of theory with well-known results giving the variation of peak concentration (i.e. weight of suspended matter per unit volume) with distance down-wind from a continuous point source, such as a single static smoke generator, producing a cloud of air-borne particles of matter. The applications of this empirical law of diffusivity, and of one previously used, to evaporation problems are compared and discussed.