The method of comparison of vertical motion characteristics for spherical and fractal-like aerosol particles in the stationary atmosphere and in the atmosphere under action of the averaged vertical wind is presented. It consists in introduction of a suitable equivalent radius (sedimentation radius) for fractal-like particles and in comparison of subsidence velocities of introduced spherical particle and the real aggregate identical by mass. It is shown, that subsidence velocities of compact spherical and fractal-like particles can differ essentially in this case.
aerosol, fractal-like particles, vertical wind