URBAN WATER AND CLIMATE CHANGE

摘要

There is no chance to deny that the world's climate is changing, at least in the last decades. This is clearly perceived by the common sense, at least in the European countries, and especially in the Mediterranean area. The question is still open, and to give a satisfactory answer is a very difficult task, because there are several phenomena not yet completely understood and many points still need to be investigated. There are two possible interpretations concerning, respectively, a persistent trend with sharp characteristics, and the occurrence of long period oscillations with very high extreme values.