Periodic change of the wind direction during day - night time. Anabatic (up slope) flow - wind direction east - observed during the day. Katabatic (down slope) flow - wind direction west - observed during the night. Characteristic sudden change of the wind direction during the transition time (sunset, sunrise). Measurements using sonic anemometers at two altitudes (4m and 14m) of the meteorological tower during Oct. 3 - 5, 2000.

Wind direction during anabatic - katabatic flow fluctuations

Wind velocity during anabatic - katabatic flow fluctuations

Temperature variations during anabatic - katabatic flow fluctuations