Articles | Volume 20, issue 12
https://doi.org/10.5194/acp-20-7291-2020
https://doi.org/10.5194/acp-20-7291-2020
Research article
 | 
24 Jun 2020
Research article |  | 24 Jun 2020

Impacts of water partitioning and polarity of organic compounds on secondary organic aerosol over eastern China

Jingyi Li, Haowen Zhang, Qi Ying, Zhijun Wu, Yanli Zhang, Xinming Wang, Xinghua Li, Yele Sun, Min Hu, Yuanhang Zhang, and Jianlin Hu

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Cited articles

Ansari, A. S. and Pandis, S. N.: Water Absorption by Secondary Organic Aerosol and Its Effect on Inorganic Aerosol Behavior, Environ. Sci. Technol., 34, 71–77, https://doi.org/10.1021/es990717q, 2000. 
Asa-Awuku, A., Nenes, A., Gao, S., Flagan, R. C., and Seinfeld, J. H.: Water-soluble SOA from Alkene ozonolysis: composition and droplet activation kinetics inferences from analysis of CCN activity, Atmos. Chem. Phys., 10, 1585–1597, https://doi.org/10.5194/acp-10-1585-2010, 2010. 
Atkinson, R. W., Kang, S., Anderson, H. R., Mills, I. C., and Walton, H. A.: Epidemiological time series studies of PM2.5 and daily mortality and hospital admissions: a systematic review and meta-analysis, Thorax, 69, 660–665, https://doi.org/10.1136/thoraxjnl-2013-204492, 2014. 
Ayers, G. P.: Comment on regression analysis of air quality data, Atmos. Environ., 35, 2423–2425, https://doi.org/10.1016/S1352-2310(00)00527-6, 2001. 
Bergström, R., Denier van der Gon, H. A. C., Prévôt, A. S. H., Yttri, K. E., and Simpson, D.: Modelling of organic aerosols over Europe (2002–2007) using a volatility basis set (VBS) framework: application of different assumptions regarding the formation of secondary organic aerosol, Atmos. Chem. Phys., 12, 8499–8527, https://doi.org/10.5194/acp-12-8499-2012, 2012. 
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Large gaps still exist in modeled and observed secondary organic aerosol (SOA) mass loading and properties. Here we investigated the impacts of water partitioning into organic aerosol and nonideality of the organic–water mixture on SOA over eastern China using a regional 3D model. SOA is increased more significantly in humid and hot environments. Increases in SOA further cause an enhancement of the cooling effects of aerosols. It is crucial to consider the above processes in modeling SOA.
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