Mudra K. The main characteristics of the hydrological regime of the Dniester basin rivers under the climate change conditions.

The dissertation is devoted to the study of the basic characteristics of the hydrological regime of the Dniester River basin rivers, their transformation in the conditions of climate change and the estimation of the river runoff changes for the future. The Dniester River is one of the largest rivers in Eastern Europe and with the Danube, Dnieper and Southern Bug, belongs to the large rivers of the northwestern Black Sea basin. The study of the hydrological regime characteristics of the Dniester River and its tributaries was carried out basis on the data from the hydrometeorological observation points in Ukraine and Moldova. Today, there are 83 active hydrological stations in the Dniester River basin that monitor the runoff. The collected information of the water flow characteristic for the whole observation period at the hydrological stations (h/s) was used in the work in full. Meteorological data from 15 meteorological stations (annual and monthly precipitation, as well as average annual and average monthly air temperatures) were used to estimate future climate change trends. The preliminary estimation of the observations series on homogeneity was performed using statistical and hydrologic-genetic methods. Confirmation or violation of homogeneity makes it possible to speak about the feasibility of using separate data series in further calculations. The results of verification of the homogeneity of water discharge characteristic showed that the most homogeneous are the observations series on the average (89% of the estimated series are homogeneous) and the maximum water discharge (spring high water period - 82% of the series, rain floods - 87% of the series). The observations series of minimum water discharge were less homogeneity. 71% of the estimated data series are homogeneous for the minimum water discharge in summer period, 80% for the minimum water discharge in winter (ice) period.