Winds in Complex Terrain - Wind Energy Meteorology: Atmospheric Physics for Wind Power Generation - page 75

Fig. 4.1 Principal sketch of the vertical structure of boundary layers in mountainous terrain

Fig. 4.2 SODAR measurements of the diurnal variation of the horizontal wind field in an Alpine
valley demonstrating the diurnal change between mountain winds at night and valley wind at
daytime as well as the channelling of the wind in this valley. The wind data have been averaged
over 30 min in time and 30 m in the vertical. The abscissa shows 24 h from local midnight to
midnight, the vertical axis gives the height in m. Direction of arrows gives horizontal wind
direction and length of arrows gives wind speed