engleski

A modelling study of the universal stability functions in simple numerical model simulations over idealized urban surface

The aim of this numerical study is to evaluate several formulations of universal stability functions, which characterise turbulent exchange processes in the surface layer in the simple one-dimensional and two-dimensional numerical models. In the first part of the paper, the one-dimensional prognostic model illustrates the basic behaviour of the stability functions and in the second part, the ability of the mentioned functions to provide a physical and numerical successful two-dimensional integration of the urban heat island circulation is examined. The results show that the examined formulations did not succeed in describing the development of the urban heat island circulation.

Monin-Obukhov similarity theory; turbulent eddy coefficients for momentum and heat; urban heat island circulation

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