Internal mixing state and ice forming capability of atmospheric aerosol particles

大气气溶胶粒子中水溶性物质的体积分数（ε）是与云滴和冰粒活化过程有关的重要参数。为了估算单个粗粉尘颗粒的ε，采用激光共聚焦扫描显微镜直接测量水透析前后单个颗粒的体积差。对参考试验沙尘样品的单个颗粒和亚洲沙尘事件期间的粗颗粒进行了ε分析。为了测量冰的形成能力，使用连续流扩散室，性能评估的基础上的计算流体动力学分析，修改的仪器，和大气气溶胶的测试实验进行。

Volume fraction(ε) of water soluble material in atmospheric aerosol particles is an important parameter relating to activation processes to cloud droplets and ice particles. In order to estimateεof individual coarse dust particle, a confocal scanning laser microscope was applied to direct measurement of volume difference of individual particles before and after water-dialysis. Individual particles of reference test dust samples and coarse particles during Asian dust events were analyzed forε. To measure ice forming capability using a Continuous-Flow Diffusion Chamber, assessment of the performance based on a computational fluid dynamics analysis, modification of the instrument, and a test experiment for atmospheric aerosol were performed.