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Computations of energy for diapycnal mixing in the Baltic Sea due to internal wave drag acting on wind-driven barotropic currents
Authors:
Nohr, C. and B. G. Gustafsson
Source:
Oceanologia, 2009, 51(4), 461-494
Abstract:
The pathways of energy supply for mixing the deep waters of the Baltic Sea is largely unknown. In this paper, a parameterization of the internal wave drag forces on barotropic motion is developed and implemented into a two-dimensional shallow water model of the Baltic Sea. The model is validated against observed sea levels. The dissipation of barotropic motion by internal wave drag that is quantified from the model results show that breaking internal waves generated by wind forced barotropic motions can contribute significantly to diapycnal mixing in the deep water of the Baltic Sea.
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Key words: Baltic Sea, turbulent mixing and internal waves
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