青藏高原地表热状况与华西秋雨

Relationship between the Surface Heating Fields over QinghaiXizang Plateau and Precipitation of Southwest China in Autumn

利用 196 1- 1995年青藏高原及其邻近地区 148个测站的月平均资料 ,分析研究了高原地面热源与华西秋雨的联系。结果表明 ,高原东部地面热源与华西秋雨存在着显著的负相关关系。高原东部地面热源异常强迫 5 0

Surface heating fields over the QinghaiXizang plateau were estimated using the 35 years(1961—1995) data set of 148 observation stastions in the QinghaiXizang plateau and near area, the relationship between the surface heating fields over the plateau and precipitation in the southwest China in autumn is anlysed. The results are as follows: (1) There are negative correlations between the surface heating over eastern part of QinghaiXizang plateau and precipitation in southwestern China in autumn. (2) Anomaly of 500 hPa atmospheric circulation over the AsiaEurope forced by abnormal of surface heating over the Plateau is able to restrict amount of precipitation in the southwestern part of China in autumn.