Lars Czeschel
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View article: On the development and stabilisation of symmetrically unstable fronts in the surface mixed layer 
On the development and stabilisation of symmetrically unstable fronts in the surface mixed layer  Open
Destabilising atmospheric forcing can create regions where potential vorticity (PV) takes the opposite sign of the Coriolis parameter, leading to the onset of symmetric instability (SI)—a hybrid convective-inertial perturbation. SI f…
View article: "Energy transfers in surface wave-averaged equations"
"Energy transfers in surface wave-averaged equations" Open
Ocean surface gravity waves play an important role for the air-sea momentum fluxes and the upper ocean mixing, and knowledge of the sea state leads in general circulation models to improved estimates of the ocean energy budget and allows t…
View article: On the role of secondary instabilities for symmetrically unstable fronts in the surface mixed layer
On the role of secondary instabilities for symmetrically unstable fronts in the surface mixed layer Open
Symmetric instability (SI) plays an important role in the energy transfer from geostrophically balanced fronts to turbulent kinetic energy in the oceanic surface mixed layer.  SI can occur when the potential vorticity (PV) takes the o…
View article: Internal Wave Radiation through Surface Mixed Layer Turbulence
Internal Wave Radiation through Surface Mixed Layer Turbulence Open
In a series of large-eddy simulations with different forcing, we study the generation of internal gravity waves at the base of the surface mixed layer. If turbulent eddies act as obstacles and undulate the base of the mixed layer, horizont…