On Wind?Driven Energetics of Subtropical Gyres

The flow of energy in the wind-driven circulation is examined a combined theoretical and numerical study. Based on multiple-scale analysis, we find mesoscale field ocean interior strongly affected by, but does not feed back onto, ventilated thermocline. In western boundary region, associated currents first appear as coastal jets, conserving mean energy, later separated jet extensions where energized by field. It zone primary loss general to occurs. These ideas are tested an analysis regional 1/12° primitive equation model North Atlantic. predictions theory generally supported results. one exception that topographic irregularities spawn eddies, although these eddies contribute modestly budget. We therefore conclude sink wind input into jet, interior. also shows be much smaller than fluxes; thus, largely recirculates energy.