WSEAS Transactions on Environment and Development
Print ISSN: 1790-5079, E-ISSN: 2224-3496
Volume 20, 2024
Computing Method Applied for Simulation and Forecast of Hydrophysical Fields in the Southeastern Black Sea
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Abstract: In this paper, a numerical regional model of the Black Sea hydrodynamics with a spatial resolution of 1 km is applied to simulate and forecast the mesoscale circulation and thermohaline structure in the southeastern part of the Black Sea. The regional model is based on a nonlinear nonstationary system of differential equations in z coordinates, describing the evolution of three-dimensional fields of currents, temperature, salinity, and density. The solution of the equation system is based on the use of finite-difference methods, in particular, on the method of multicomponent splitting of the differential operator of the original problem into simpler operators. To illustrate the implementation of the numerical model, the paper presents the calculated fields of flow, temperature, and salinity for the summer season of 2020 under real atmospheric forcing derived from the atmospheric model SCIRON. The influence of basin-scale processes on regional processes was taken into account by boundary conditions on the liquid boundary separating the regional area from the open part of the sea basin. A comparison of the forecast results with available satellite data shows that the model reproduces well the basic peculiarities of hydrophysical fields.
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Keywords: Black Sea, circulation, system of equations, boundary conditions, splitting method, atmospheric forcing, mesoscale eddies
Pages: 662-671
DOI: 10.37394/232015.2024.20.64