Stationary eddies
From Glossary of Meteorology
stationary eddies
(Also called standing eddies.) In studies of the general circulation, the eddies are the departures of a field (e.g., temperature
or relative vorticity) from the zonal mean of that field; the stationary eddies are the time-averaged, or time-invariant, component of the eddy field.
or relative vorticity) from the zonal mean of that field; the stationary eddies are the time-averaged, or time-invariant, component of the eddy field.