Summary of the drivers of total hemispheric uptake, transport and storage of excess heat over the period 1861-2005. Ensemble mean values (from Figure 1) are shown for the accumulated net radiative flux anomaly at the top of the atmosphere (netTOA), accumulated heat flux anomaly at the ocean surface (ocean heat uptake; OHU) and change in ocean heat storage (ocean heat content; OHC). The accumulated atmospheric and oceanic heat transport inferred from those values is also indicated, with features of the historical experiment labeled according to whether they are primarily driven by GHG forcing (red text) or AA forcing (blue text).