Consistency in Z-R Relationship Variability Regardless Precipitating Systems, Climatic Zones Observed from Two Types of Disdrometer

摘要: Data from rain Drop Size Distributions gathered on five sites in Africa as well those of the pilot site Kourou (French Guyana, South America), located different climatic zones, and collected by two types disdrometer (the impact JW RD-69 Optical Spectro-Pluviometer, OSP) are used to study consistency reflectivity factor-rain rate at ground (Z-R) relationship variability. The results clearly confirm that Z-R knows a large spatial variability, type precipitation another within same regardless for DSD measurements. Base similarity relations ratio median volume diameter over total number drops-rain rate, variability coefficients (A, b) through simultaneously implication size drops which characterize was exhibited. It shown relationships A-α b-β designed understand involvement parameters D0 NT similar used. However, Sahelian region appear deviate Guinean, equatorial Soudanian zones. plausible reasons were discussed.