David Cocker, Professor and Chair of Chemical and Environmental Engineering, University of California Riverside
"Improving Secondary Organic Aerosol Prediction through Environmental Chamber Experiments"
Coffee and snacks will precede the lecture at 3 p.m. in the first floor atrim of Ford ES&T
Secondary organic aerosol (SOA) is a major contributor to fine particle air pollution in Southern California along with many regions across the globe. SOA is formed via atmospheric reaction of volatile organic compounds leading to oxidation products of lower vapor pressure that can enter the aerosol phase. Traditionally, SOA in areas such as the Southern California Air Basin is attributed to anthropogenic precursors such as unburnt or partially combusted fuels. This presentation will describe the newest enhancements to the UCR 120 m3 indoor environmental chamber and lessons learned from its characterization and explore SOA formation from emerging chemicals of interest in the atmosphere (e.g., volatile chemical products (VCPs)) that were recently identified as major precursors to ozone and secondary organic aerosol formation within the Southern California Air Basin. The work will discuss some of the measurement challenges encountered and overcome for these novel SOA precursors as well as lessons learned about differences between individual VCP behavior and that of a consumer product. As time permits, the presentation will also discuss recent primary emissions work from modern container ships.
David Cocker is Professor and Chair of Chemical and Environmental Engineering at the University of California Riverside. He completed received his PhD in Environmental Engineering Science from the California Institute of Technology in 2001. He has published 150+ peer reviewed journal articles in the areas of secondary organic aerosol formation, detailed primary source emissions characterization, air quality systems, and health impacts of fine particulate matter.