Equatorially averaged T–P profiles for three models: A (green), J (yellow) and K (orange). The orange (K) and yellow (J) models have had their outer atmosphere cooling modified such that T_eq = 2200 K or 1200 K, respectively. The solid lines represent the equilibrium T–P profiles whilst the dashed lines represent the T–P profiles 200 yr after the outer atmosphere forcing was adjusted (shown in dark grey for each model). We note that after 200 yr of “modified” evolution, only the 2200 K model has not reached equilibrium.