暴雨,是较常见的天气现象。一般在24小时内雨量超过50毫米的降雨,通常称为暴雨。在我国某些地区常因暴雨成灾,因此暴雨更加受到人们的注意。降雨的两个条件暴雨和其他等级降雨(如大、中、小雨)的差别只是数量的不同,等级的划分是人为的。从根本上说,各种等级降雨的原因相同。地表面随时随地都有水汽蒸发到空气中去。正如不同的人饭量各有一定限度一样,温度不同的空气容纳水汽的“饭量”也各有一定限度。达到这个限度称为“饱和”。超过这个限度,多余的水汽就要凝结成水滴了。空气的温度越高,它能 Heavy rain is the more common weather phenomenon. Rainfall that typically exceeds 50 millimeters of rainfall within 24 hours is commonly referred to as heavy rain. In some areas of our country, torrential rains often cause disasters, so heavy rain has attracted more attention. The two conditions of rainfall, rainstorms and other grades of rainfall (such as large, medium and light rains) differ only in quantity, and the division of grades is artificial. Fundamentally, the reasons for the various levels of rainfall are the same. Water vapor evaporates into the air anywhere on the surface. Just as different people’s appetites have certain limits, so does the “appetite” of air with different temperatures. Reaching this limit is called “saturation.” Exceeding this limit, excess water vapor will condense into water droplets. The higher the temperature of the air, it can