Growth and Activation of Multicomponent Atmospheric Particles: The Role of Organics

本课题是对含有机碳气溶胶吸湿生长特性的实验研究。这些研究将涉及产生具有一系列有机和混合有机/无机成分的气溶胶，并使用串联差分迁移率分析仪（TDMA）和云凝结核计数器进行表征。实验系统包括一个扫描电迁移谱仪，可以在几秒的时间尺度内详细测量细微的气溶胶大小分布，并能够产生内部或外部混合的气溶胶。生物烃光氧化过程中产生的有机气溶胶的性质将是提出的工作的主要焦点。

This project is an experimental study of the hygroscopic growth properties of organic carbon-containing aerosols. The studies will involve the generation of aerosols with a range of organic and mixed organic/inorganic compositions and characterization using a Tandem Differential Mobility Analyzer (TDMA) coupled to a Cloud Condensation Nuclei Counter. The experimental system includes a Scanning Electrical Mobility Spectrometer allowing detailed measurements of the fine aerosol size distribution in a time scale of seconds and the ability to produce internally or externally mixed aerosol. The properties of organic aerosol produced during the photo-oxidation of biogenic hydrocarbons will be a major focus of the proposed work.