东亚地区春季二氧化硫的输送与转化过程研究I.模式及其验证

结合新近评估的东亚地区污染源资料,作者利用一个耦合的区域化学输送模式系统以探讨东亚地区春季期间气象过程、气相与液相化学过程、非均相化学过程、气溶胶过程和干湿沉降过程对二氧化硫输送及转化过程的影响,并研究二氧化硫和硫酸盐气溶胶的空间分布及变化特征.模拟的二氧化硫和硫酸盐气溶胶的浓度值与2001年春季飞机和地面获取的观测值进行了比较.比较结果显示,模拟值与观测值具有很好的一致性,模式系统很好地反映了二氧化硫和硫酸盐气溶胶的分布特征和变化规律,再现了许多观测到的重要特征,为进一步分析模拟结果奠定了基础.

A Study of Sulfur Transport and Transformation over East Asia in the Springtime I. Model System and Its Verification

A coupled regional chemical transport modeling system is applied to East Asia to investigate the impacts of meteorological processes, gas phase chemistry, aqueous phase chemistry, aerosol processes, heteorogeneous chemistry and deposition processes upon sulfur transport and transformation in the springtime on the basis of recently estimated emission inventory for East Asia Modeled values of sulfur dioxide and nitrate aerosol mixing ratios were compared with the observations obtained on the ground and on the aircraft during TRACE P and ACE Asia field campaigns in 2001 Comparison shows that the simulated values agree well with the observations, and the modeling system simulates the distributions and variations of sulfur dioxide and nitrate aerosol concentrations quite well, and reproduces many of the observed important features The good agreement between the simulated results and the observations provides confidence in future analysis of the simulated results