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Information × Registration Number 0222U001578, 0119U002260 , R & D reports Title Climate changes and their impact on hydrologic and hydroecologic bahaviours for limans of north-west Black Sea coast popup.stage_title Head Hohlov Valerii M, Доктор географічних наук Registration Date 28-01-2022 Organization Odessa State Ecological University popup.description2 The study quantifies regional climate change that has occurred and is expected in the near future in the north-western Black Sea coast in order to determine their impact on the water balance of "choked" lagoons under anthropogenic activities in watersheds, to identify effective ways to stabilize hydrological and hydroecological regimes of lagoons in current and future climatic conditions. Statistical characteristics of hydrometeorological observations in the north-western Black Sea coast and climate change runs according to the RCP 4.5 and RCP 8.5 scenarios of the Euro-CORDEX regional climate model ensemble were studied. Hydrological and hydroecological regimes of lagoons were simulated using numerical hydrodynamic models. It is shown that the trend towards a warmer and drier climate is expected in the near future. The components of the water balance of "choked" lagoons were determined for the current 2000-2018 and future 2021-2050 periods compared to the period before the climate change of 1961-1990. For these periods, the components of the fresh water balance of lagoons (precipitation, fresh water inflow from rivers, evaporation from the water surface of lagoons) were determined and a residual (deficit) annual balance was estimated. Comparing these estimates with the lagoons water volumes, the lagoons were ranked according to their vulnerability to climate change. For those lagoons, for which the urgent task is the stabilization of their hydrological regime and hydroecological status under the expected future conditions, scenario numerical modeling for intra-annual variability of hydrological characteristics and mineralization of their waters under different options of water and environmental management. Using the model results, the most effective options for the implementation of environmental measures approached to compensate the deficit of the annual water balance, to stabilize hydrological and hydroecological regimes of the studied lagoons were identified.  Product Description popup.authors Kozlov Mykhailo O Kushnir Dmytro V Loboda Natalia S Nedostrelova Larysa V Sierha Eduard M Tuchkovenko Oksana A Tuchkovenko Yurii S Khokhlov Valeriy M popup.nrat_date 2022-03-09 Close