Scaling properties of rainfall time series

Rainfall strongly affects our everyday life, very often in terms of fatalities, unfortunately. Therefore, it is crucial to examine closely the rainfall characteristics, such as the rainfall statistical structure at different time scales, that is a key issue in many Hydrological problems. The large amount of literature produced in the last twenty years about this issue deals with the validation of a power law dependence of all statistical moments on the scale of aggregation (scale invariance). This paper focuses on the analysis of the scale invariance properties of rainfall time series from a high density rain gauge network covering the Romes urban area. The network consists of 24 sites, and the gauge record at each site has 10- minute time resolution and about 12-year length. The aim of our work is that of determining the eventual existence of scale invariance regimes and their intervals of validity.