To evaluate how these responses affect ocean heat uptake, we use the output of the comprehensive climate model simulations to force a comprehensively configured ocean general circulation model (OGCM). Perturbation experiments apply a change in wind stress, freshwater fluxes, and downwelling shortwave radiation to this forcing according to the fields' direct response to quadrupling atmospheric CO2. The results of the perturbation OGCM simulations show that the direct changes in surface winds, which are a significant fraction of the total changes in Southern Ocean westerlies, alters the overturning circulation in both the Pacific and Atlantic Oceans. This in turn, has a cooling effect on the ocean at shallow depths. In contrast, the changes in freshwater fluxes and shortwave radiation have a modest influence on the global circulation with a correspondingly small effect on the global surface energy balance. Guided by the OGCM simulations, we formulate a revised two-box (surface and deep ocean) energy balance model to account for the ocean heat content's direct response to surface wind changes.