Cloud profiles under different eddy diffusivity parameters K_zz, which serve as effective vertical turbulence. Left: total cloud mixing ratio (solid lines) and Fe vapor mixing ratio (dashed lines) as an example. Right: nuclei mixing ratio (solid lines) and particle size (dashed lines). Similar to Figure 3, the location where the cloud optical depth reaches unity is shown in the left panel by the horizontal bands with corresponding colors. We note that there is no blue band corresponding to K_zz = 10⁴ cm²s⁻¹, because the cloud optical depth never reaches 1.