ABSTRACT
Of the two, it is the effects of clouds which are more readily obvious, as clouds are such a widely varying component, with the potential to make one day sunny and enjoyable, and the next rainy and miserable: unless, of course, you are a farmer. So that is the second major role of clouds; their pivotal role in the hydrological cycle. Since these processes are governed by thermodynamics, it is natural to place a clouds chapter close to that chapter.
