Julia Bakker-Arkema ’14 (Carleton College) presents “Laboratory studies of atmospheric chemistry: secondary organic aerosol formation and evolution” on Friday, February 12th at 4:30.
The oxidation of volatile organic compounds (VOCs) in the atmosphere to form secondary organic aerosol (SOA) is known to influence climate by directly scattering and absorbing incoming solar radiation, and by participating in cloud formation and processing. Furthermore, SOA decreases visibility, and negatively impacts human health. It also provides surfaces for heterogeneous and multiphase chemistry to occur, reactions that can alter the composition and properties of the aerosol. However, mechanisms of SOA formation and the chemistry that can occur within and on the surface of the SOA once it forms remain poorly understood. While direct atmospheric particulate measurements are useful, ambient particles can be challenging to analyze due to varying atmospheric conditions, different oxidants and VOCs, and thousands of potential SOA-forming reaction products. Laboratory studies allow us to simplify and control SOA reaction conditions, which can provide insights that improve our understanding of the complex chemistry of the atmosphere.
Pick up cookies and tea from the Moerig Lounge in Anderson Hall on Friday.
Join Zoom Meeting https://carleton.zoom.us/j/97062621266
Meeting ID: 970 6262 1266 Passcode: 945583