Mixed layer sub-mesoscale parameterization – Part 2: Results for coarse resolution OGCMs

Abstract. Recent studies have shown that sub-mesoscales (SM, ~1 km) play an important role in mixed layer dynamics and have concluded that it has become necessary to include them in ocean global circulation models, OGCMs. In part A, we developed and assessed a parameterization of the vertical SM tracer flux for OGCMs that resolve mesoscales M but not SM. In the present paper, we derive a parameterization of the vertical SM tracer flux for OGCMs that do not resolve either M or SM, as those used in climate studies.