The atmospheric reanalyses are used to calculate trends in the total net heat flux from the atmosphere into the ocean, and its components. The ocean reanalyses are used to calculate trends in ocean heat storage, horizontal and vertical temperature advection, and the diffusion of heat. Enhanced transport of heat from the warming ocean is accomplished primarily by increases in the latent heat flux, with secondary support from a reduced solar flux in some regions. The latent heat flux is decomposed into thermal (Claussius-Clapeyron), dynamical (wind speed) and hydrological (vapor pressure depression) components. Dynamically-driven changes in the latent heat flux are similar in magnitude to the thermally-driven changes, and even dominate in some regions.