1. National Research Council, Institute of Atmospheric Sciences and Climate; Lecce Italy
2. National Research Council, Institute of Atmospheric Sciences and Climate; Turin Italy
3. Department of Pure and Applied Sciences (DiSPeA); Università degli Studi di Urbino ‘Carlo Bo’; Italy
4. National Inter-University Consortium for Physics of the Atmosphere and Hydrosphere (CINFAI); Rome Italy
5. Dipartimento di Fisica; Università di Torino; Italy