Left: emergent bolometric intensity at the top of the horizontal xy plane for the 148 simulations in the CIFIST grid. The figures are ordered with 1) increasing log g; 2) increasing T_eff; and 3) decreasing [Fe/H]. The atmospheric parameters and the rms intensity contrast with respect to the mean intensity are given above the snapshots. The length of the upper bar in the top right is 10 times the pressure scale height at τ_R ~ 1. Center: mean power spectra as a function of the horizontal wavenumber (2π/λ) averaged over snapshots of the intensity map. Right: relative intensity distribution with the Mach and logarithm of Péclet numbers (both evaluated at ⟨ τ_R ⟩  = 1) identified on the panel.