Oceanic convection remains poorly understood even though it is one of the main driver of the oceanic dynamics. Convection can be penetrative (entrain water from below the mixed layer) or non-penetrative. While it is reasonably straightforward to formulate conceptual parameterizations of non penetrative convection in idealized settings, it remains challenging to extend the formalism to realisticpar bderembl - Thèses hors de l'EDPIF