TEMPERATURE CHANGES IN THE TROPOSPHERE AND LOW STRATOSPHERE OVER CHINA, 1958-1986

The data of 25 radiosonde stations in China has been used to estimate mean-annual and mean-seasonal temperature changes of the earth surface, troposphere and low stratosphere. It has been found that mean-annual temperature has mainly increased in low strotosphere, and has decreased in troposphere over most areas of China with maximum cooling area beginning in Qingzang Plateau, passing through North China and ending in Northeast China. The surface warming and cooling areas have showed a col pattern with warming regions in west and east and cooling regions in south and north over China. If boundary is ordered at 35°N, the Northern China has warmed on surface and the Southern China temperature change has been small. Therefore, surface warming has been found in the whole China as in the-Northern Hemisphere. During the period of 1975-1986, the maximum warming was in North China, and cooling:become strong in other regions. Troposphere cooling over China, different from troposphere warming in the Northern Hemisphere, maybe has some relationship with weaking and southward displacing of middle latitude upper westerlies over East Asia. Obvious surface warming in winter and troposheric cooling in spring have,also been found in most areas of China.