[1] Fdn CMCC, Ctr Euro Mediterraneo Cambiamenti Climatici, Via M Franceschini 31, I-40128 Bologna, Italy
[2] Fdn CMCC, Ctr Euro Mediterraneo Cambiamenti Climatici, Via Augusto Imperatore 16, I-73100 Lecce, Italy
[3] Univ Bologna, Dipartimento Fis & Astron DIFA, Viale Berti Pichat 6-2, I-40127 Bologna, Italy
[4] Ist Nazl Geofis & Vulcanol, Via D Creti 12, I-40128 Bologna, Italy
[5] Natl Oceanog Ctr, 6 Brownlow St, Liverpool L3 5DA, Merseyside, England
[6] Links Management & Technol SPA, Via R Scotellaro 55, I-73100 Lecce, Italy