赤道太平洋对流活动异常对我国夏季降水和气温的影响

Effects of the Tropical Pacific Convective Activities on Precipitation and Temperature over China in Summer

利用月平均ＯＬＲ、降水和气温资料，研究了ＥＮＳＯ期间赤道太平洋对流活动与我国夏季降水和气温的关系。结果表明：春季、夏季中、西太平洋对流活动异常与我国夏季江淮地区的降水有密切关系；春季和前一年冬季西太平洋对流活动异常与东北地区夏季降水有显著相关。前一年冬季中、西太平洋对流活动异常与我国降水的显著相关区是不同的，前者为华南、西南地区，后者为东北至内蒙古一带。气温与同期中、西太平洋对流活动的相关不显著。

ased on monthly mean OLR data over the tropical Pacific, precipitation data, air temperature data, and with the application of correlation analysis, the relationship between the convective activities over the central and western Pacific and the precipitation and temperature patterns over China in summer was studied. The results show that the summer precipitation anomalies in the regions between the Yangtze River and Huaihe basins are related to the earlier tropical Pacific convective activities anomalies (OLRC and OLRW) in spring and summer. Besides, the Summer precipitation over Northeast China is correlated with OLRW in last winter and spring, but not with OLRC over the central tropical Pacific. OLR anomalies over the central Pacific and the western Pacific in last winter exerts an obvious effects on temperares over China in summer. The affected areas are different. The former is southern China and Southwest China while the latter is Northeast China and Inner Mongolia. The instantaneous correlation between OLR over the tropical Pacific and temperature in China is not statistically significant.