Models of the Equatorial Ocean Circulation.
SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA
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Equatorial ocean dynamics are investigated using analytical and simple numerical models. The steady circulation is first examined using a linear equatorial beta-plane formulation in which continuous density stratification is a key element. The basin is horizontally unbounded and forced by either winds or a surface temperature boundary condition. Two vertically diffusive models are proposed to examine the effects of different turbulence parameterizations. One is characterized by temperature dissipation proportional to temperature itself, the other has biharmonic friction proportional to a fourth derivative of velocity. Both lead to equations for the steady state that are in many ways analogous to the well-known equations governing equatorial wave motion. The analogies are exploited both in obtaining analytical solutions and in describing the flow dynamics.
- Physical and Dynamic Oceanography