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The Number of Equivalent Drought Days and the Synthetic Index of Drought Intensity. Using data from seven meteorological stations and 27 rainfall gauges from the eastern part of Romania, the present paper desires to evidence more clearly the real significance of drought phenomena. This was done with the help of two distinct expressions, resulted from the processing of daily values of the climatic parameters: equivalent drought and the synthetic index of drought intensity. Equivalent drought shows the length of the interval lacking precipitations, characterized by similar consequences in different temperature conditions, and it was computed by reporting water consumption (evapotranspiration) according to a series of elements standard considered. The synthetic index of drought intensity (severity) has been proposed taking into consideration both the length of the drought interval as well as its mean temperature (practically expressing water consumption), to which is added and the sum of precipitations from a previous interval (to approximate the easily and directly accessible crop water reserves).

Keywords: climatic parameters, daily values, equivalent drought, drought intensity.