Upper panels: Observables of the (“transparent” atmospheres. The CO₂ partial pressure is 1.e-7 bar, except for the (“transparent” case where the observables have been calculated for P_CO2 =1.e-15 bar. For the “no CIA” case, the collision-induced absorptions have not been included in the opacity computation. Lower panels: Temperature profile and map for the 10 bar case. The atmosphere is very well mixed, but there is no efficient coupling with the surface, and the surface has a hot dayside and cold nightside.