中文摘要：

根据NCEP／NCAR提供的1950-2007年南半球12～2月、6～8月500hPa位势高度的月平均再分析资料，采用合成分析方法讨论与中国夏季3类雨型相对应的南半球500hPa距平高度场的分布特征；运用多变量方差分析方法确定12～2月和6～8月与3类雨型相对应的南半球西风指数波动关键区A；分析关键区A的西风波动与中国夏季降水之间的关系；寻找南、北半球西风相互作用影响中国夏季降水分布的可能途径。分析表明，6～8月与3类雨型相对应的南半球500hPa距平高度场显示出不同的距平分布形式，并存在显著差异区在（35°N～50°N，35°E～80°E）。12～2月南半球的西风指数变化关键区A在22．5°W-2．5°W，6～8月关键区A在10°E～55°E。南半球关键区A的西风指数强弱变化与中国夏季降水的关系密切，且12～2月南半球的西风波动对北半球夏季关键区的西风环流的变化有预测意义，而前期南半球关键区A的平均西风指数与北半球夏季高度场的显著负相关区在贝加尔湖。南、北半球大气环流经向传播是两半球西风相互作用的可能途径，前期南半球的异常西风使夏季贝加尔湖的平均槽强度变化，进而造成北半球关键区的西风环流异常，从而影响中国夏季雨型的分布。

英文摘要：

Based on the monthly mean reanalysis data of geopotential height at 500 hPa from the NCEP/NCAR during 1950 - 2007, the characteristics of the anomaly height fields at 500 hPa from December to February and from June to August in the Southern Hemisphere corresponding to the three rain patterns in China during summer were discussed. The multivariate analysis of variance was used to find the key area A of zephyr index corresponding to the rain patterns, and the relationship between zephyr index in key area A and the precipitation during summer in China had been investigated. It was also analyzed to find an affiliation which the abnormal zephyr in the Southern Hemi- sphere from December to February would affect the zephyr in the Northern Hemisphere in summer, thereby impac- ted the distribution of rain patterns in China. According to the study, the anomaly height fields corresponding to the rain patterns exhibited different distributions, and the significant discrepancy area was in （35°N- 50°N, 35°E- 80°E）. The key area A from December to February located in 22. 5°W - 2. 5°W, and from June to August was in 10°E - 55°E.The precipitation in China in summer was linked to the fluctuation of zephyr index in the key area A The abnormality of zephyr in the Southern Hemisphere in winter could forecast the variation of zephyr in the key area in the Northern Hemisphere in summer. The significant anticorrelation area of zephyr index in the Southern Hemisphere from December to February and the height field in the Northern Hemisphere in summer distributed in Lake Baikal. The latitudinal transmit of atmospheric circulation between the Southern and the Northern Hemispheres was one of the trace of the interaction between zephyr in the Southern Hemisphere and that in the Northern Hemisphere possibly. The abnormal zephyr in the Southern Hemisphere in winter would affect the intensity of trough in Lake Baikal, with which the zephyr in the key area was abnormal in the Northern Hemisphere, thereby affecting the distribution of