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Springer Proceedings in Earth and Environmental Sciences

ISSN:2524342

2022

10.1007/978-3-030-99504-1_13

Fields of currents and arrays of energy budget components were investigated with the help of the numerical model of dynamics using hydrological data from 89th cruise of the R/V Professor Vodyanitsky. To implement the procedure of data assimilation, we used a four-dimensional analysis procedure, based on a Kalman filtering, taking into account the heterogeneity and non-isotropy of error estimates of thermohaline characteristics. Wind action and vertical friction made a significant contribution in the change of kinetic energy, vertical turbulent diffusion and advection of potential energy—in the change of potential energy. The following features of circulation were obtained in the numerical experiment for the autumn season of 2016: anticyclonic eddies near Sevastopol, cyclonic and anticyclonic eddies at the south-eastern coasts of Crimea and other parts of area under consideration, a flow of the Rim Current along the Crimean coast. High values of work of the wind force and vertical dissipation were observed in the zones of formation of mesoscale eddies. Negative values of the buoyancy work were noticed to the west of the region and along the eastern coast of Crimea.

Assimilation of observational data, Black sea, Energy analysis, Mesoscale and submesoscale eddies, Numerical modeling