A Study of the Extraordinary Ekman Spirals and the Characters of the Turbulent Second-Order in the Stable Boundary Layer

The characters of the Ekman spirals over a slopped terrain have been discussed by using the second–order model. The results show that under a certain condition of environmental geostrophic wind field, the Ekman spirals will change into counter clock–wise ones in the northern hemisphere. In addition, effects of the terrain on the structure and the vertical distribution of the turbulent second–order in the stable boundary layer have been discussed.