Combined Use of Three Different Approaches to Obtain the Best Estimate of Meso-Beta Surface Winds Over Complex Terrain.

摘要

Three approaches for estimating meso-beta (Delta chi=5-10 km) surfac e winds over complex terrain are applied to obtain best estimates of typical summertime surface flow in Israel, based on a detailed 3-D model, a one-level sigma model and a dense network of surface wind observations. A scheme for combining the three approaches is outlined and illustrated through two examples showing how the approaches complement each other. It is suggested that such a man-machine combination is best for estimation of surface winds over complex terrain. Keywords: Wind prediction; Boundary layer; Mesoscale modelling; Reprints. (JHD)