Session 2 Secondary Organic Aerosols: Formation, Properties, and Atmospheric Evolution

Monday, 23 January 2017: 4:00 PM-5:30 PM
401 (Washington State Convention Center )
Host: 19th Conference on Atmospheric Chemistry
Alla Zelenyuk, PNNL, Richland, WA and Manishkumar Shrivastava, PNNL, Richland, WA

Recent laboratory and field studies provide new insights into the formation, growth, phase, viscosity, and volatility of secondary organic aerosols (SOA). These data indicate that under many atmospherically-relevant conditions SOA particles are significantly more viscous and orders of magnitude less volatile than assumed in traditional modeling approaches; SOA formation yields can be significantly higher than previously reported values; and anthropogenic pollution enhance loadings of SOA from biogenic precursors.

4:00 PM
Growth Kinetics of Viscous Secondary Organic Aerosol
Rahul A. Zaveri, PNNL, Richland, WA; and J. Shilling, A. Zelenyuk, J. Liu, D. Bell, E. D'Ambro, C. J. Gaston, J. A. Thornton, A. Laskin, P. Lin, R. Easter, A. Guenther, J. H. Seinfeld, A. K. Bertram, S. T. Martin, J. Wang, C. Kuang, A. Setyan, Q. Zhang, D. J. Cziczo, W. B. Knighton, C. Floerchinger, J. D. Fast, J. Tomlinson, T. Onasch, and D. Worsnop

4:15 PM
Mechanistic Insights into Isoprene SOA Formation Utilizing Measurements and Modeling
Emma D'Ambro, Univ. of Washington, Seattle, WA; and K. Moller, H. Kjaergaard, S. Schobesberger, F. D. Lopez-Hilfiker, J. Liu, J. Shilling, B. H. Lee, and J. A. Thornton
4:45 PM
Effect of Atmospherically-Relevant Organic Coatings, Humidity, and Aerosol Acidity on Multiphase Chemistry of Isoprene Epoxydiols
Alla Zelenyuk, PNNL, Richland, WA; and M. Riva, D. Bell, A. M. K. Hansen, G. T. Drozd, Z. Zhang, A. Gold, D. Imre, J. D. Surratt, and M. Glasius
5:00 PM
Sensitivity Analysis of Simulated SOA Loadings Using a Variance-Based Statistical Approach
Manishkumar Shrivastava, PNNL, Richland, WA; and C. Zhao, R. Easter, Y. Qian, A. Zelenyuk, J. Fast, Y. Liu, Q. Zhang, and A. Guenther
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