【摘要】 利用一个冰雹云模式与云化学模式耦合而成的二维积云化学模式 ,研究对流云的输送、微物理转化、云内化学过程、湿清除对SO2 及硫酸盐气溶胶的作用。云化学模式的结果表明 ,由于SO2 在向上输送的过程中可溶解于云水和雨水中 ,从而阻止了SO2 向上部的转移 ,因此对气相SO2 来说 ,云的输送是一个相当无效的过程 ,而液相清除起主要作用。硫酸盐气溶胶的收支分析表明 ,降水清除了 1 67mol的SO2 -4 ,占气溶胶总量的 64% ,其中液态降水清除了 0 72mol,固态降水清除了 0 95mol,说明了冰相过程在硫沉降中的重要性。更多还原

【Abstract】 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更多还原