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The vertical profiles of wind velocity under the pressure distribution typical in the winter season have been investigated on the basis of the data acquired from December, 1996 to February, 1997. The observations in the lower layer were made above Fukuoka City by using a Doppler sodar. The data which Fukuoka and Kagoshima meteorological observatories obtained by releasing rawinsondes were used as ones in the upper layer of the atmosphere. A strongly stratified layer is formed between the Ekman layer and the free atmosphere. The existence of the layer makes the vertical profiles of wind velocity complicated. The geostrophic wind velocity in the free atmosphere varies linearly because of the horizontal gradient of temperature. The wind profiles have been analyzed by using a onedimensional model in which the eddy diffusivitiy and the geostrophic wind vary with the height. The analyzed results agree well with the observed ones.

VERTICAL PROFILES OF WIND VELOCITY UNDER THE TYPICAL ATMOSPHERIC PRESSURE DISTRIBUTION IN THE WINTER SEASON