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

Giles Fearon (1) , Steven Herbette (2, 1) , Jennifer Veitch , Gildas Cambon , Andrew Lucas , Florian Lemarié (3) , Marcello Vichi

1 Department of Oceanography, University of Cape Town, South Africa
2 LOPS - Laboratoire d'Océanographie Physique et Spatiale
3 UGA - Université Grenoble Alpes

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 (

Mots clés: Inertial oscillations; Land-sea breeze; Diurnal-inertial resonance; Coastal upwelling; Diapycnal mixing; Phytoplankton blooms

Domaines: Océan, Atmosphère

Giles Fearon, Steven Herbette, Jennifer Veitch, Gildas Cambon, Andrew Lucas, et al.. Enhanced Vertical Mixing in Coastal Upwelling Systems Driven by Diurnal‐Inertial Resonance: Numerical Experiments. Journal of Geophysical Research. Oceans, 2020, 125 (9), ⟨10.1029/2020JC016208⟩. ⟨hal-02544118v1⟩