中文摘要：

在那里存在西藏的高原(TP ) 和 TP 的平凡东方之间，并且在在东亚的土地和海之间的热差别。陆地海的影响在华东的降水上的热对比广泛地被调查了；然而，一些研究注意了 TP 平原热差别的角色。因此，从 1951 ～ 2007 为大气的研究(NCEP/NCAR ) 分析数据和中国的观察数据的环境预言 / 公民中心使用国家中心， TP 之间的区域平均数温度差别(27.5 南极高原，屋顶 A 被收到了国际注意。在这篇论文，在在 20052007 的屋顶 A 的一个自动气象站(AWS ) 的观察数据被用来在 10 m 的深度以内在扎根并且下雪的温度附近分析空气温度的季节的变化。空气温度上的分析证明无核心的冬季的一个典型特征，和强壮的倒置在长冬季期间维持。因此，地面附近的层化由在中立附近的稳定的国家被统治。雪温度的季节的变化在振幅减少并且与深度增加在阶段落后，它在 10 m 的深度以内导致不同季节的温度侧面。吝啬的年度空气温度近扎根了的大小表演是大约 5 ????€ ???吠湍?????低′???????????????????????????????吗??????慃??牓???閬я閬я？

英文摘要：

There exist thermal differences between the Tibetan Plateau （TP） and the plain east of the TP, and between land and sea in East Asia. The influence of the land-sea thermal contrast on the precipitation in East China has been widely investigated; however, a few studies have paid attention to the role of the TP-plain thermal difference. Thus, using the National Center for Environmental Prediction/National Center for Atmospheric Research （NCEP/NCAR） reanalysis data and the observation data of China from 1951 to 2007, the area-mean temperature difference between the TP （27.5°-40°N, 80°-100°E） and the plain （27.5°-40°N,110°-120°E） at 500 hPa is defined as an index （dexr_c） of the TP-plain thermal difference in East Asia. The relationship between the deXT-C and East Asian general circulation and the rainfall in China in the summer has been explored. Diagnostic analysis and numerical simulation show that the TP-plain thermal difference is closely related to the rainfall over West China （90°-110°E） in the summer. High values of the dexT-C correspond to the large thermal difference between the TP and the plain, strengthening the heat low over the TP, southward of the northwestern Pacific subtropical high, southern flood and northern drought in West China （90°-110°E）, and vice versa. From 1951 to 2007, the variation in deXT-Cexhibits a remarkable oscillation and ascending trend, and the abnormal rainfall pattern over West China （90°-110°E） also changes from ＂northern flood and southern drought＂ to ＂southern flood and northern drought＂. The above research is favorable to knowing how the two-stage thermal differences influence summer rainfall in China.