Articles | Volume 20, issue 10
https://doi.org/10.5194/acp-20-5911-2020
https://doi.org/10.5194/acp-20-5911-2020
Research article
 | 
19 May 2020
Research article |  | 19 May 2020

Hygroscopic properties and cloud condensation nuclei activity of atmospheric aerosols under the influences of Asian continental outflow and new particle formation at a coastal site in eastern Asia

Hing Cho Cheung, Charles Chung-Kuang Chou, Celine Siu Lan Lee, Wei-Chen Kuo, and Shuenn-Chin Chang

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Cited articles

Chang, S.-C., Chou, C. C.-K., Chen, W.-N., and Lee, C.-T.: Asian dust and pollution transport – A comprehensive observation in the downwind Taiwan in 2006, Atmos. Res., 95, 19–31, https://doi.org/10.1016/j.atmosres.2009.07.012, 2010. 
Cheung, H. C., Morawska, L., and Ristovski, Z. D.: Observation of new particle formation in subtropical urban environment, Atmos. Chem. Phys., 11, 3823–3833, https://doi.org/10.5194/acp-11-3823-2011, 2011. 
Cheung, H. C., Chou, C. C.-K., Huang, W.-R., and Tsai, C.-Y.: Characterization of ultrafine particle number concentration and new particle formation in an urban environment of Taipei, Taiwan, Atmos. Chem. Phys., 13, 8935–8946, https://doi.org/10.5194/acp-13-8935-2013, 2013. 
Cheung, H. C., Chou, C. C.-K., Chen, M.-J., Huang, W.-R., Huang, S.-H., Tsai, C.-Y., and Lee, C. S. L.: Seasonal variations of ultra-fine and submicron aerosols in Taipei, Taiwan: implications for particle formation processes in a subtropical urban area, Atmos. Chem. Phys., 16, 1317–1330, https://doi.org/10.5194/acp-16-1317-2016, 2016. 
Chou, C. C.-K., Huang, S.-H., Chen, T.-K., Lin, C.-Y., and Wang, L.-C.: Size-segregated characterization of atmospheric aerosols in Taipei during Asian outflow episodes, Atmos, Res., 75, 89–109, https://doi.org/10.1016/j.atmosres.2004.12.002, 2005. 
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Short summary
Air pollution can result in changes to the amount and properties of aerosols, which in turn could influence climate by acting as cloud condensation nuclei (CCN). This study investigated the composition and hygroscopicity of aerosols (PM2.5) at a station under influences of eastern Asian (EA) outflows and local air mass during respective seasons. The results show that the EA aerosols were more hygroscopic, whereas new particle formation and coagulation could also influence local CCN activity.
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