Time-clustering analysis of rainfall fluctuations

Point processes, like other geophysical phenomena, such as earthquakes or avalanches, are well suited to model rain event sequences. Time-clustering analysis has been performed over rainfall sequences by using the statistical approaches of Fano Factor and Allan Factor. The obtained results suggest the presence of clustering in the time distribution of the sequence of rain events, with scaling exponent a ranging between similar to 0.35 and similar to 0.42.