本文利用欧洲中期天气预报中心1983年的客观分析资料, 对亚洲季风区的热源进行了计算和诊断分析。分析表明: 夏季亚洲存在着两个加热带, 随着入(出)梅过程, 与热带季风槽相应的加热带逐渐北进与大陆加热带靠近, 它们有规律的北进和东西振荡与东亚的季风经向环流和纬向环流的演变一致。分析还发现, 梅雨期及其前后我国东部与季风雨带相联系的热源性质有明显的不同。

In this paper, by using the ECMWF data in summer of 1983, we calculated and diagnostically analysed the atmospheric heat source over the Asian monsoon area. The results show that there are two heating belts over the Asia in summer. The heating belt corresponding to the tropical monsoon trough gradually moved northward and closed to the continental heating belt with the Meiyu season coming in(or going out). The regular movement to north and the east-west oscillation of the heating belts are identical with the evolution of the East Asian monsoon meridional and zonal circulations. The results also show that the characteristics of the atmospheric heat sources relative to monsoon rain belts over the East China obviously have difference before, in and after Meiyu season.