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Cloud electrification and related lightning activity inthunderstorms have their origin in the charge separation and resultingdistribution of charged iced particles within the cloud. So far, the icedistribution within convective clouds has been investigated mainly by meansof ground-based meteorological radars. In this paper we show how theproducts from Cloud Profiling Radar (CPR) on board CloudSat, a polarsatellite of NASA's Earth System Science Pathfinder (ESSP), can be used toobtain information from space on the vertical distribution of ice particlesand ice content and relate them to the lightning activity. The analysis has beencarried out, focusing on 12 convective events over Italy thatcrossed CloudSat overpasses during significant lightning activity.The CPR products considered here are the vertical profiles of cloud icewater content (IWC) and the effective radius (ER) of ice particles, which are comparedwith the number of strokes as measured by a ground lightning network(LINET). Results show a strong correlation between the number of strokes andthe vertical distribution of ice particles as depicted by the 94 GHz CPRproducts: in particular, cloud upper and middle levels, high IWC content andrelatively high ER seem to be favourable contributory causes for CG (cloud to ground) strokeoccurrence

Observing relationships between lightning and cloud profiles by means of a satellite-borne cloud radar