Abstract
Effect of aerosol particle sedimentation on the growth rate of condensation (evaporation) and Brownian coagulation is theoretically discussed. Model calculation suggests that the rate of Brownian coagulation increases about 10 times owing to the aerosol particle sedimentation. Such effect is an important factor controlling global geochemical cycle of particulate matter and related gases in the atmosphere, such as reduction of the stratospheric volcanic clouds which are organized by sulphuric aerosols, ash particles, and gases.
