1. Consiglio per la ricerca in agricoltura e l'analisi dell' economia agraria, Council for Agricultural Research and Economics, Unit of Agricultural Climatology and Meteorology (CREA-CMA), Rome, Italy
2. Italian National Research Council, Institute of Environmental Geology and Geoengineering (CNR-IGAG), Monterotondo, Italy
3. Department of Environmental Biology, University of Rome La Sapienza Rome, Italy.