Identification of dry and wet years in eastern Slovakia using indices

Abstract

The aim of the paper was to evaluate dry and wet periods in selected climatic stations in eastern Slovakia using the drought indices. We evaluated drought occurrence using the following indexes: standardized precipitation index (SPI), streamflow drought index (SDI), drought reconnaissance index (RDI) and standardized evapotranspiration index (SPEI) in a 12-month step over the period 1960-2015. The evaluation of the results showed alternation of wet and dry periods. The result of the work is identification of the dry and wet years according the separate indexes during the evaluated period.