Horizontally propagating wave solution forms are assumed for mid-ocean mesoscale currents (i.e., those with spatial and temporal cycles of a few hundred kilometers and several months). The wave environment-defined to include the Coriolis parameter, bottom topography, and mean currents-is assumed to be inhomogeneous, but only on much larger scales. Mutual compatibility between these assumptions is derived....
McWilliams, James C.. 1976. "Large scale inhomogeneities and mesoscale ocean waves: A single, stable wave field." Journal of Marine Research 34, (3). https://elischolar.library.yale.edu/journal_of_marine_research/1369