暴雨的强度实际上并没有* * * *原因降水的持续时间较短。有一种强烈的* *相关,但不是你可能暗示这(让我回到那个时刻)。首先你必须消除模型,云是一个巨大的容器的水,如果它“雨难”,云会耗尽水更快和雨事件将持续时间更短。雨并没有这样的工作。大气中无处不在(甚至在云)包含了很多很多的水。在稳定的温度、压力、和湿度,湿度非常高兴在完全气态存在。但随着不同的气团(不同的温度和压力)开始碰撞,当地的大气条件可以超出范围,完全可以存在于一个气态水。这被称为露点(http://en.wikipedia.org/wiki/Dew_point)。*云*只是两个不同大气条件已经满足,以及由此产生的冷凝水滴只是还没有足够的重量,来克服空气的上升气流速度。如果空气质量慢慢混合,会发生凝结的速度缓慢,在较长一段时间。 The resulting clouds may simply "evaporate" as the local conditions stabilize, or the condensing water may slowly precipitate over the ground [or the precipitation may never reach the ground at all](http://www.weatherquestions.com/What_causes_precipitation.htm). These gentler atmospheric changes tend to play out over longer periods of time because the air masses are moving more slowly or the relative changes in the atmosphere are less abrupt. ###Here's the part where I talk about intensity If two air masses have widely varying conditions (think warm moist air over the ocean meeting dryer hotter conditions over the land) and they meet more abruptly (higher wind speeds), the moisture from the air has to condense more quickly. This causes a more violet disturbance; the water condenses more quickly, falls faster and harder, and the whole thing ends (relatively speaking) more quickly. But the duration tends to be shorter because the reaction between the differing masses is occurring at a faster rate — so the whole *event* tends play out more quickly. But it is perfectly conceivable that "harder rain" can last much longer if the storm system continues to pull in more moist atmosphere to feed it. In extreme circumstances, that's pretty much what a hurricane is; the storm itself gets so big that it starts to create it's own *system* that pulls in more and more atmosphere around it. The rain doesn't simply stop when all the rain has fallen out of the clouds. It actually (continually) makes new clouds/precipitation as it continues to draw in the atmosphere surrounding. **But generally speaking,** the faster the disturbance occurs, the faster the precipitation will fall, and the more quickly the conditions will stabilize and the rain will stop.