Sensitivity of the upper ocean structure to atmospheric forcing

Type Publication
Date 1996
Language English
Author(s) Karaca M
Source Oceanologica Acta (0399-1784) (Gauthier-Villars), 1996 , Vol. 19 , N. 1 , P. 15-26
Abstract A one-dimensional model of the upper ocean is presented. The model is based on a self-similar temperature profile (called the model-profile) and features special parameterizations of forcing functions in terms of surface heat flux and wind stress. The model-profile is combined with observational data for the Pacific Ocean to produce dynamically consistent fields of mixed-layer temperature, depth, and effective depth. The model for the upper ocean is forced with surface heat fluxes simulated by the UCLA Atmospheric General Circulation Model (AGCM) using both climatological and observed sea-surface temperature (SST) for periods following the 1982-1983 ENSO event. Furthermore, the mixed-layer temperature is taken as the SST used in the AGCM. In this context, the model produces the wind forcing consistent with the prescribed mixed-layer temperatures and surface heat fluxes. It is found that the resulting wind forcing has significant differences with that simulated by the AGCM. A method is suggested, therefore, to evaluate surface fluxes simulated by an AGCM with a view to its eventual coupling to an Oceanic General Circulation Model (OGCM).
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