Articles | Volume 19, issue 14
Atmos. Chem. Phys., 19, 9641–9661, 2019
Atmos. Chem. Phys., 19, 9641–9661, 2019
Research article
31 Jul 2019
Research article | 31 Jul 2019

Seasonal differences in formation processes of oxidized organic aerosol near Houston, TX

Qili Dai et al.

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Cited articles

Allen, D. T. and Fraser, M.: An overview of the Gulf Coast Aerosol Research and Characterization Study: The Houston Fine Particulate Matter Supersite, J. Air Waste Manage., 56, 456–466,, 2006. 
Atkinson, D. B., Massoli, P., O'Neill, N. T., Quinn, P. K., Brooks, S. D., and Lefer, B.: Comparison of in situ and columnar aerosol spectral measurements during TexAQS-GoMACCS 2006: testing parameterizations for estimating aerosol fine mode properties, Atmos. Chem. Phys., 10, 51–61,, 2010. 
Bates, T. S., Quinn, P. K., Coffman, D., Schulz, K., Covert, D. S., Johnson, J. E., Williams, E. J., Lerner, B. M., Angevine, W. M., Tucker, S. C., Brewer, W. A., and Stohl, A.: Boundary layer aerosol chemistry during TexAQS/GoMACCS 2006: Insights into aerosol sources and transformation processes, J. Geophys. Res., 113, D00F01,, 2008. 
Short summary
The formation processes of secondary organic aerosol remain to be fully understood. We reported the measurement data from two field campaigns within Houston, TX, to investigate the effects of aqueous-phase chemistry and photochemistry in processing oxygenated organic aerosol (OOA) in winter and summer. Both photochemistry and aqueous-phase processing appear to facilitate more-oxidized OOA formation. The processing mechanism of less-oxidized OOA apparently depended on relative humidity.
Final-revised paper