对我国季风气候研究的新探索

此文通过旬相对雨量图的绘制,揭示了我国三种不同属性的季风雨带及其分布、发展、演变的规律和夏季旱涝的关系,西北东部是我国三种不同季风雨带交替出没和四种夏旱类型的过渡地带。结合季风环流分析,证明了我国夏季旱涝及其演变是与西南季风及其雨带的变异和偏转运动密切相关;印度季风低槽东伸,可增强我国西南季风及其降水,但与西太平洋热带辐合带西伸北移,在中南半岛发展密切相关;东南季风与高原季风迭加,是我国大旱之年的基本规律。

A NEW STUDY ON THE MONSOON CLIMATE IN CHINA

The laws of distribution, developments and evolution of three kinds of different monsoon rain zones and the relation to summer drought and flood in China are found out in this paper with the 'ten days relative rainfall' map. The areas of west, north and east China are the transitory ones where happens alternately one of three kinds of different monsoon rain zones or four types of summer drought.According to analysis on the cir- culation of monsoon, it is proved, that the happening and developing of summer drought and flood in China are closely related to the deflection and variation of west-south monsoon and its rain belts. The west south monsoon and its precipitation of China may be reinforced by the extension of depression from Indian monsoon towards the east and closely relaid on the motion of west pacific tropical con- vergence belt towards the west and north, and its developing in the mid- south peninsulas. The basic law of serious drought year in China is essentially resulted from the simultaneous appearence of east-south monsoon and that of plateau.