Trend dei deflussi in Sicilia

[automatically translated] The effects of climate change are occurring appreciably in the changes undergone by precipitation, temperature and outflows, in many places of the planet, not only as regards their entities, most frequently investigated, but also about their variability during the year. In reference to this second aspect, the work reported here, we wanted to investigate the existence or not of a trend in the length of the seasons and the amount of water resource produced during the seasons themselves. These typically are identified by criteria linked to monthly rhythms that take into account only briefly effective climate seasonal variation; to obviate this drawback is using an original methodology to identify the sequence of dry and wet season, and thus their respective duration, in time series of runoff related to Sicilian river basins. The identification of trends was conducted by the non-parametric test application of Mann-Kendall. Upon completion of the study, the same analysis was performed on the time series of annual runoff, monthly and quarterly the same basins.