This work aims at developing new approaches for parameterizing mesoscale eddy effects in eddy-permitting ocean circulation models.
Several emerging approaches will be briefly discussed to provide the context.
The idea in focus is to approximate transient eddy flux divergence in a simple way, by roughening the resolved flow field.
It is demonstrated that this works well for representing eddy backscatter maintaining the western boundary current eastward-jet extension.
Due to its utmost simplicity, the approach has strong practical potential.