Massimiliano Alvioli¹, Massimo Melillo², Fausto Guzzetti³, Mauro Rossi⁴, Elisa Palazzi⁵, Jost von Hardenberg⁶, Maria Teresa Brunetti⁷ and Silvia Peruccacci⁷, (1)CNR-IRPI National Research Council, Bari, Italy, (2)CNR-IRPI National Research Council, Perugia, Italy, (3)CNR Institute of Research on Hydrogeological Hazards in Southern Italy and Islands, Perugia, Italy, (4)IRPI CNR, Perugia (Pg), Italy, (5)National Research Council (CNR), Institute of Atmospheric Sciences and Climate (ISAC), Torino, Italy, (6)CNR Institute of Atmospheric Sciences and Climate, Bologna, Italy, (7)CNR, Perugia, Italy