Advances in Geosciences www.adv-geosci.net 1680-7340 1680-7359 7 7th Plinius Conference on Mediterranean Storms (2005) 2006 10.5194/adgeo-7-15-2006 http://www.adv-geosci.net/7/15/2006/ http://www.adv-geosci.net/7/15/2006/adgeo-7-15-2006.html http://www.adv-geosci.net/7/15/2006/adgeo-7-15-2006.pdf 15 18 2006-01-13 Warm season precipitation climatology: first European results V. Levizzani R. Ginnetti A. G. Laing R. E. Carbone National Research Council, Institute of Atmospheric Sciences and Climate, Bologna, Italy National Center for Atmospheric Research, Boulder, CO, USA To date very low scores are associated to quantitative precipitation forecasts (QPF) of warm season precipitation, a fact mostly due to the little knowledge of the mechanisms driving these phenomena. The study aims to produce a five-year climatology (1999–2003) of warm season precipitation systems (MJJA) over Europe using Meteosat IR brightness temperatures as a contribution to a global study launched by the World Weather Research Programme (WWRP). Cold cloud persistence, span and duration of weather systems were determined to derive the zonal propagation speed and daily cycles.