Keywords: the Black Sea, oceanographic parameters, modelling of variability, results verification

Results of application of the complex of coupled numerical models Delft3D Flow Flexible Mesh (D-Flow FM) and D-Waves (spectral wave model SWAN) to the oceanographic conditions of the Black Sea and its north-western part during stormy periods in November 2023 are discussed. The modelling complex was set up in simulation mode to reproduce the spatial and temporal variability of oceanographic parameters in the water areas under consideration. Simulation was performed as a part of the modelling complex verification procedure. Meteorological data obtained from the forecast archive of the GFS (Global Forecasting System) global numerical weather prediction model was used as atmospheric forcing. Simulation results were compared against the observational data on oceanographic parameters at coastal hydrometeorological stations located in the ports of the Odessa region at the north-western coast of the Black Sea (Chornomorsk, Odesa, Pivdennyi). In addition, results of wind wave simulation, obtained from the modelling complex, were compared with the results of independent modelling via spectral wave model WAM Cycle 6 that assimilates wind reanalysis data from the European Centre for Medium-Range Weather Forecasts (ECMWF). The use of the modelling complex made it possible to reconstruct a complete picture of the spatial and temporal variability of oceanographic parameters during the stormy periods of November 2023 both in the entire Black Sea basin and in its north-western part. Good quantitative and qualitative consistency between the modelling results of sea level variability, wind wave heights, sea water temperature and observational data, collected at hydrometeorological stations in the area of seaports of the Odessa region, was obtained. The conclusion was made that the aforementioned complex of coupled numerical models D-Flow FM + D-Waves (SWAN) has good prospects for use in the system of hindcast and operative forecast of variability of oceanographic parameters of marine environment in the Black Sea and its distinct areas.

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