本文用1959、1960年1月和7月青藏高原上及其附近100个站的高空资料作出了距地300米、900米、海拔1500米、3000米、4000米及5000米等六层平均风场图。研究指出: 1.1月自高原中部至云贵一带存在一条辐合带,其厚度约距地1000米。近地层的反气旋性环流中心不在蒙古人民共和国,而在高原东侧的大陆上。天山和祁连山分别对西风都有明显的分支作用。2.7月在高原上的风向辐合更为明显,但和印度北部的内热带辐合带是截然分开的,它北部的反气旋性环流轴线在3000米以下,位于42°-43°N一带,到5000米南退到35°N附近,这与日常天气图上小高压活动的情况相符。3.不论1月和7月风向的日变化都清楚,20时普遍有吹向高原的分风向,且在高原的边缘附近表现最为明显,不少站的风向日变化达到180°。

In this paper the streamfields on 300m and 900m above the surface and 1500m 3000m,4000m,and 5000m levels above the sea level are calculated with data about 100 aerological stations over the Plateau and its surroundings in January and July for 1959-1960.It shows: l.In January, there is a convergent zone which is located from the central part of Plateau to Yunnan and Guizhou Provinces. It's thickness is about 1000m above the surface. The anticyclone center near the surface is not located in the People's Republic of Mongolia and in the East China to the east side of Plateau. 2.In July, the convergent zone over the Plateau is stronger than in January and it is not a part of ITCZ over India.The axis of the anticyclone over the north side of Plateau is located at the zone of 42°-43°N below 3000m, but it moves southward to 35°N on 5000m level. These correspond with the activities of small anticyclones on daily synoptic charts. 3.Either in July or in January all the diurnal variations of wind direction are clear.In general,the wind blows toward the Plateau in the aftecrnoon. The more the station nears the Plateau, the more the wind blows toward the Plateau.The diurnal variations of wind direction for a few stations approach to 180°.