Parameters in the Atmospheric Diffusion Equation

The mean wind speed is often represented as a power-law function of height which may be expressed as 

The exponent p is then to be determined on the basis of atmospheric conditions. By differentiating Eq. (9.1) with respect to z, p is found from 

Monin-Obukhov similarity theory, as expressed by (7.10), can be used in (9.2) to give 

A functional representation of the approximate form of the universal function F has been obtained by Huang and Nickerson as (Huang, 1979) 

Monin-Obukhov similarity theory can be used to prescribe the form of Ka in the surface layer. can be expressed as 

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