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During the research project RIADE (Ricerca Integrata per l'Applicazione di\udtecnologie e processi innovativi per la lotta alla DEsertificazione),\uddevoted to the study on the potential risk of desertification in Southern\udItaly, a particular attention has been paid also to the analysis of\udprecipitations from three surface stations (Licata, Sicily; Rotondella,\udBasilicata; Surigheddu, Sardinia) in order to improve the knowledge derived\udfrom the most modern climatological studies related to this subject. The\udpoint of view adopted is to better define the precipitation microphysical\udproperties (in particular, the Drop Size Distribution, DSD, and its\udmoments), which are deeply related to the cloud system that generates the\udprecipitation events. In particular we have used a newly introduced\udConvective Stratiform discrimination technique, that allowed us to observe a\udprevalence of events, concentrated along Winter (Wi) season, of different\udmicrophysical nature. In fact the prevailing Stratiform nature is related to\udLicata station, while for Surigheddu and for Rotondella the nature is mainly\udConvective. This distinction is related to the presence of drops of bigger\uddimensions and more intense precipitations in the latter case, while, in the\udformer case, a prevalence of smaller drops and a less intense precipitation\udis recorded. This confirms the distinctive belonging to three different\udclimatic regions, as indicated in the study by Brunetti et al. (2006). Our\udfindings are important in the framework of desertification studies, because\udthe cause of desertification can be related either to fertile soils removal\ud(in the case of Convective events) or to lack of precipitated water (in the\udcase of Stratiform events). We have also analysed a sub-set of ten events,\udwith contemporary presence of data from VIS/IR channels of METEOSAT-7, SSM/I\uddata from F13 and MODIS data from Terra platform. This has been done both to\udconfirm the findings of PLUDIX data analysis (which is, in fact, confirmed)\udand to show the capability of PLUDIX to detect the fast local variations\udrelated to the temporal evolution of more extended systems. The potentiality\udof PLUDIX as a real-time detector of precipitation events, together with the\uddevelopment of an adequate number of algorithms, that give a complete\udmicrophysical description of the observed events, finally, opens the way for\uddeveloping a new Present Weather Sensor

Contemporary ground-based and satellite precipitating system characterization for desertification studies in Southern Italy