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Accurate estimation of marine surface winds is necessary to a numerical model for the prediction of oceanic wind waves.In this paper,a method of marine surface winds estimation based on a two layer model of the atmospheric boundary layer is described.The atmospheric boundary layer is assumed to be separated into two regions:surface layer and Ekman layer.According to the viewpoint of similarity theory of the boundary layer,the effects of thermal stratification on the surface layer wind distribution of the atmosphere are taken into account.The universal funtions,in the equation that represents the vertical wind profile in this layer,are gives from the relationships derived by Businger etc (1971).In the Ekman layer,the vertical wind profile is specified by the Ekman}s solution,taking into account the baroclinic effects.To examine the model computation of the winds has been made and it is found that the marine surface wind fields from the computation,in the main,agree with those obtained from the analysis based on ship observations.Forecasting tests were made by use of the boundary layer model combined with numerical weather prediction model and it is expected that this model can be used in the routine operation.
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