Resumen

GARCIA RODRIGUEZ, Dianelis; DURAN LLACER, Iongel  y  LAPINEL PEDROSO, Braulio. Amount of rainy days and drought significant events in central Cuba. Rev. Cubana Met. [online]. 2020, vol.26, n.1  Epub 01-Mar-2020. ISSN 2664-0880.

The climatic trends observed throughout the Caribbean in the last decades show an increase in the frequency and intensity of the drought. In Cuba exists a close link between the significant drought events and the influence of strong anticyclonic systems, that acts against the development of any kind of rain amount. Therefore, the importance of researching how much it rains and how often and the intensity of it. This work analyzes the behavior of the amount of rainy days in total and by intervals in the central regions of Cuba, the possible relation with the occurrence of significant droughts events from 1981 to 2010. The statistical software Statgraphics 5.1 and Microsoft Office Excel 2016 were used to obtain the trend and statistical parameters of rainy days in 19 weather stations. The spatial distribution was made through the Geographic Information System ArcGIS (v 2.14). The decile method was used to analyze the highest deficit periods of rainy days and It were related to meteorological variables, that reflect the atmospheric processes influence in the drought´s development, such as Geopotential surfaces and Omega. The results confirmed a greater distribution of rainy days in the interior and mountainous areas, with a greater concentration in the intervals less than 50 mm of precipitation, an increasing trend but only statistically significant about the 0.1 m to 10 mm and a great relationship between rainy days and significant periods of drought were found.

Palabras clave : rainy days; geopotentials; omega; drought; Cuba.

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