Identificación del comportamiento temporal de la precipitación para la distribución de tamaño de gotas (DSD) con la relación reflectividad (z) - rango de lluvia (r), en el páramo de la microcuenca del Zhurucay.

Abstract

Raindrop distribution respondss to the precipitation process into a microphysical level, taking into account variables like N(Di) and the mean (Dm); which classify the rain, through Dm variability on a case of rain. Afterwards, raindrop distribution N(Di) was obtained based on the classification. By this way, it was possible to observe the relationship and differences that exists between each other. In association with DSD, rain characterization is necessary, with relation Z-R, in order to obtain constants (a – b) that fits precisely to each type of obtained rain. Data from precipitation from the disdrometer (Thies Clima), located in Zhurucay micro-basin, were collected. The project included a database of 170 cases corresponding to a two-year period (2012-2014). The DSD worked with 4 types of rain: First Stratiform(FS), Second Stratiform(SS), Initial Convective(IC) and Continue Convective(CC), which were classified by monthly periods. DSD results showed that the raindrop distribution for each type of rain was different, demonstrating the different inclination and forms of raining in specific months. Moreover, April and July generated two types of intence rain, with drop of 8mm of diameter, knowing possible impacts of erosivity in this period. The characterization of Z-R obtained through a regression showed that the constants for each type of rain had different values. The study proved the existence of different types of rain at high mountain areas and the difference among each other through their distribution and in the value of constants that can be useful for future research and conservation studies.