气溶胶核化清除的化学效应 I：云滴化学非均匀性的研究

本文将水汽在云滴上凝结增长的物理过程与气溶胶、气体的化学过程相结合，对气溶胶核化清除的化学效应进行了研究。 计算结果表明:气溶胶的核化清除造成了云滴化学成分随云滴大小分布的非均匀性，这种非均匀性又对云滴内发生的气体吸收、液相氧化产生影响。 本文还比较了不同污染状况下，不同大小的云滴内气溶胶核化清除与液相氧化对云滴化学的相对贡献的差异。 因此，这种云滴化学的非均匀性(云微化学)的研究对于云化学的野外观测及数值模拟都是重要的。

Chemical Consequences of Nucleation Scavenging of Aerosol Particles. Part I: Chemical Inhomogeneities among Cloud Droplets

The physical processes of the growth of water vapor by condensation on cloud droplets and thechemical processes of aerosols and gases in cloud droplets are coupled to study the chemical conse-quences of nucleation scavenging of aerosols. The results show that the nucleation scavenging of aerosols can result in chemical inhomogeneities among cloud droplets and also the inhomogeneities caninfluence the chemical processes inside cloud droplets (e.g. the uptake of the gases by cloud droplets andthe aqueous oxidations in cloud droplets).The relative contributions of nucleation scavenging of aerosols and aqueous oxidations to the clouddroplet chemistry among cloud droplets are compared for three different pollutions. Thus, theinhomogeneities of cloud droplet chemistry (so called cloud micro-chemistry) are very important tofield measurements and numerical investigations of cloud chemistry.