关于黄河流域的降水问题,1954年中国科学院地球物理研究所和黄河规划委员会会共同进行了一项比较全面的工作,包括降水资料的整编、分析与研究。并在1955年出版了“黄河流域降水图集”,其中包括各类降水图143幅;又编写了“黄河流域降水”专刊,其中包括七篇讨论降水、暴雨与洪(?)、以及干旱等问题的论文。本文就是在上述工作的基础上,针对黄河流域的降水特点与干旱同题作—概括论述。

The seasonal variation of rainfall in the Huangho Valley may be summed up by the following characteristics of economic significance:一(1) Scarce in spring: The record of most stations is less than 100 mm of the annual rainfall. (2) Concentrated in summer: Half of the annual rain falls in summer, while in North China Plain 75%. Days with 50 mm rainfall or more are not rare.