PARAMETERIZATION OF WAVE EFFECTS UPON LARGE-SCALE BOTTOM BOUNDARY-LAYER FLOW

The oceanic bottom boundary layer is governed by non-linear, dynamic interactions between large-scale, wave, and turbulent flows. Large-scale modelling requires simple parameterizations of wave effects. Special cases tum out to allow rational simplifications. Utilization of these, with interpolations, give a simple description of the wave-affected large-scale boundary layer flow. The available data support the general behaviour of the present and comparable models, but are too few and scattered to allow a detailed model identification. The parameterization is expected to be reasonably realistic over wide intervals of possible flow conditions so that it is useful for large-scale flow modelling.