中文摘要：

通过对亚欧大陆不同季节热力变化的对比分析,发现亚欧大陆冬、春季有明显的经向热力差异,夏、秋季存在准纬向的热力差异.进一步分析还发现大陆冬季经向热力差异与东亚冬季风有很好的正相关关系,即热力差异指数越大（小）,则东亚冬季风越强（弱）;在经向热力异常发生的同时,洋面热力状况也显著不同,从而导致东亚地区不同区域间海陆热力对比发生变化,引起降水分布的不同.

英文摘要：

Through analyzing the characteristics of Eurasian Continental seasonal thermal change,found that the heat difference was obvious meridional in winter and spring,while in summer and autumn it was the quasi-zonal.Further analysis also demonstrated that the meridional heat difference and the East Asian winter monsoon activity has a very good positive correlation,namely the thermal difference index is positive（nagetive）,the East Asian winter monsoon is stronger（weaker）.When the meridional thermal anomaly occurred simultaneously,the ocean thermal condition was significantly different,which led to the land-sea thermal contrast changed on the different regions,and then cause the different precipitation distribution over the East Asia.