Monte Carlo calculations of the Earth's twilight limb spectral radiance and coloration in a model of the spherical atmosphere are carried out for layered vertical distributions of ozone and aerosol. The possibility of space monitoring of ozone and aerosol stratification based on the panoramic twilight limb observations is studied. It is shown that for background aerosol conditions, stratospheric ozone layers 2--3 km in thickness manifest themselves in the twilight limb in the form of blue bands with increased color saturation. In the case of greatly enhanced aerosol content (compared with background conditions) the layered twilight coloration in the tropospheric and low stratospheric region is caused by aerosol layers. ¿American Geophysical Union 1991