中文摘要：

利用1979-2011年ECMWF月平均再分析资料、逐月青藏高原地面加热场强度距平指数（B-H）以及中国地面国际交换站逐日24 h降水量,研究了高原热力作用与高原夏季风之间的联系,结果表明：B-H与传统高原季风指数（TPMI）之间存在较好的同时相关关系,B-H与动态高原季风指数（DPMI）之间存在较好的超前1~3个月的相关关系,这种关系在干季尤为明显。前期2月青藏高原热力作用偏强将会导致高原夏季风爆发偏早,爆发初期强度偏强。

英文摘要：

In order to discuss whether there exist some indicative significance of thermal effects over QinghaiXizang Plateau to the onset of plateau summer monsoon,the relationship between plateu thermal effects and plateau summer monsoon were studied by utilizing monthly mean ECMWF reanalysis data,monthly index of intensity departure of surface heating fields over the Qinghai-Xizang Plateau（B-H）and daily precipitation data from China meteorological data sharing service system during 1979 2011. The correlation analysis and composite analysis are the main statistical methods to process the data. The results show that B-H is well correlated with Traditional Plateau Monsoon Index（TPMI）and Dynamic Plateau Monsoon Index（DPMI）. But there is a time lag of 1~3 months between B-H and DPMI,especially in the dry season. When the thermal effects over Plateau are stronger in February,the earlier onset of the plateau summer monsoon and the stronger intensity in the beginning of the onset period can be caused.