THE RECOVERING OF THE LARGE-SCALE CIRCULA TION IN THE OPEN-OCEAN REGION BY VARIATIONAL TECHNIQUE

The variational ''optimal control'' method is used to determine large- scale curculation in the open region of the North Atlantic. The Levitu s hydrological information and Bunker atlas sea surface data are combi ned with a priory statistics describing data errors and spatialtempora l spectra of the circulation under consideration to get the most proba ble oceanic state, satisfying geostrophic thermocline dynamics equatio ns. The resulting solution and its covariance structure are discussed.