Temperature difference ΔT between the P–T profiles in the right-hand panel of Fig. 8, which are from the model with a 800 K hotter initial condition compared to the global 1D mean, and the P–T profiles in Fig. 7, which are from the model initialised with the global 1D mean P–T profile. Temperature differences are small for P ≲105 bar, while the models have clearly not reached a steady-state for P ≳105 bar. Results are similar for the case with a 400 K hotter initial condition. Lines are as in Fig. 7.