Enhanced Vertical Mixing in Coastal Upwelling Systems Driven by Diurnal-Inertial Resonance: Numerical Experiments

The land-sea breeze is resonant with the inertial response of the ocean at the critical latitude of 30 degrees N/S. 1-D vertical numerical experiments were undertaken to study the key drivers of enhanced diapycnal mixing in coastal upwelling systems driven by diurnal-inertial resonance near the critical latitude. The effect of the land boundary was implicitly included in the model through the Craig approximation for first-order cross-shore surface elevation gradient response. The model indicates that for shallow water depths (