The role of precipitation in removal and generation of aerosols

This research is investigating whether the precipitation is the couse of generating aerosols into the air or indeed it remove the aerosols from the air. Then it investigate the role and effect of rain drops in removing and the aerosols ( fine and coarse particles) from the air, as well as the effect of the wind in different speeds during the rain events on the removal and dispersion of aerosols from the air.