The impact of climate change on evaporation from the water surface in Ukraine


 Based on the monitoring data, features of long-term changes evaporation from water surface are determined. Data relatively small evaporators and basins located in different regions Ukraine were processed. It was found that during first part observation period, which began 1950s, had tendency to decrease, while second it increased significantly. To determine factors these changes, existing calculated dependences analyzed. In most them, is determined by three arguments: partial pressure saturated vapour, corresponds temperature, actual vapour pressure, wind speed. main factor modern increase accompanied a significant vapour. particular, mean temperature Dnipro Reservoirs May– September 1977–2020 at an average rate 0.65–0.70 °C per decade, air 0.75 decade. important relationship between it, nonlinear. Wind speed does not significantly affect evaporation. addition, recent decades there has been its decrease. An empirical dependence proposed. Its nonlinear form indicates due increase. Currently (1991–2020), near Kyiv ice-free period approximately 650 mm, south reaches 1000 mm. The results additional losses reduction available resources.