Nucleation Processes under the Complex Air Pollution in China

摘要

The nucleation of gaseous precursors and subsequent growth is a crucial secondary formation process. The freshly nucleated particles can grow into sizes to act as cloud condensation nuclei (CCN). The current nucleation mechanisms are developed based on the observation in clean environment. Thus, a scientific question addressed in our studies is the mechanism of new particle formation (NPF) in the polluted atmosphere with high oxidation capacity. The presentation summarizes recent NPF studies under the complex air pollution in China, and discusses the roles of organic in the formation and growth of NPF.