A NUMERICAL EXPERIMENT OF THE PBL WITH GEO-STROPHIC MOMENTUM APPROXIMATION

In this paper, a numerical experiment of the motion in the PBL (planetary boundary layer) is perform-ed with geostrophic momentum approximation, in which a nonlinear eddy transfer coefficient is used. Some results are obtained for the boundary layer winds in cyclone-anticyclone and trough-ridge systems. This treat-ment improves W-Bs work. The effects of geostrophic wind tendency and the advection of the geostrophic wind on the winds in the PBL are also discussed.