The Study of the Impact of Cumulus Cloud upon Sulfur Dioxide and Sulfate Aerosols
积云对二氧化硫和硫酸盐气溶胶作用的研究

A two-dimensional cumulus cloud chemistry model which coupled a hailstorms model with cloud chemistry module was used to study the role of deep-convective transport, microphysics conversion, chemistry process in the cloud and wet scavenging on SO 2 and sulfate aerosols The results of cloud chemistry model show that the uptake of SO 2 in cloud water and rain water hinders the transfer of SO 2 to the upper level Therefore the transport of SO 2 was a rather inefficient process, but the scavenging by liquid phase plays an important role The budget of sulfate aerosols shows 1 67 mol SO 2- 4 , about 64% total sulfate is scavenged by precipitation in which 0 72 mol SO 2- 4 by rain, 0 95 mol SO 2- 4 by graupel, it shows the importance of ics phase process in acid deposition