Session 3D.3 Exchange coefficients and air-sea interaction in tropical cyclones

Monday, 28 April 2008: 1:45 PM
Palms I (Wyndham Orlando Resort)
Kevin J.E. Walsh, University of Melbourne, Parkville, Vic., Australia; and G. Brassington and P. Sandery

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Numerical ocean simulations with intense tropical cyclone forcing are employed to investigate the effect of various representations of air-sea interaction processes on the surface and sub-surface ocean. Both one-dimensional and three-dimensional models are used to study the ocean response which is compared to both ocean reanalyses and satellite observations. We discuss differences found between the 1-D and 3-D ocean responses, as well as between simulations using different parameterizations of surface fluxes. From comparison with available ocean observations, we identify the parameterisation of air-sea interaction processes at extreme wind speeds that provides the most realistic ocean simulations.
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