Vertical transport of cloud, considering the settling velocities (left) and the cloud mixing parameter (right). Left panel: Horizontally averaged drift velocities, v_dr [m s⁻¹], for both the active hot and standard HD 209458 b atmospheres at t_cloud = 100 days (see Table 1 and Sect. 2.6). Right panel: Meridional mean of the cloud mixing parameter (ratio of vertical windspeed to drift velocity) as a function of pressure. The red line follows the night-side at λ = 0° and the blue line follows the day-side at λ = 180° with solid as HD 209458 b and dashed as HD 189733 b.