Author(s)

A. Wellens, N. Moussiopoulous & P. Sahm

Abstract

Comparison of a diagnostic model and the MEMO prognostic model to calculate wind fields in Mexico City A. Wellens", N. MoussiopouW, P. Mezzco 0^0 D.F. Mezzco Greece ABSTRACT Wind field models may be classified into diagnostic or prognostic ones. The first type basically undertakes an interpolation on the basis of available observations, while the second type attempts a simulation of the atmospheric boundary layer dynamics by solving the appropriate atmospheric transport equations. In spite of their simplicity and computational effectiveness, diagnostic models may not be applicable for cases where only sparse observations are available. In the present paper the prognostic mesoscale model MEMO and the diagnostic wind model CAPA are applied to the Valley of Mexico. Results of both models are compared to observations which were not used as input to CAPA. The comparison shows that in the urban area of Mexico City (where sufficient observatio

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