Search

Highly oxygenated molecules (HOM) are crucial in the processes of secondary organic aerosol (SOA). In this thesis, two studies on HOM are carried out. The first one applies a simplified HOM scheme to PyCHAM, a newly developed box mode, to simulate alpha-pinene ozonolysis experiments in the dark environment in two different chambers, and concludes the essential role of the second-generation autoxidation. The second study develops and tests a more mechanistic HOM scheme in PyCHAM to investigate the binary system containing alpha-pinene and isoprene in terms of SOA production. These two studies can contribute to a better understanding of HOM as the precursors of SOA production. A command-line tool that can co-operate with PyCHAM is developed and used in both studies.