Investigating three patterns of new particles growing to cloud condensation nuclei size in Beijing's urban atmosphere

doi:10.5194/acp-2019-1151

GSTDTAP > 地球科学

DOI	10.5194/acp-2019-1151
	Investigating three patterns of new particles growing to cloud condensation nuclei size in Beijing's urban atmosphere
	Liya Ma, Yujiao Zhu, Mei Zheng, Yele Sun, Lei Huang, Xiaohuan Liu, Yang Gao, Yanjie Shen, Huiwang Gao, and Xiaohong Yao
	2020-05-04
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
英文摘要	The growth of newly formed particles with diameters from ~ 10 nm to a larger size was investigated in Beijing's urban atmosphere on 10–23 December 2011, 12–27 April 2012 and through June–August 2014. The maximum geometric median diameter (D_pgmax) of newly formed particles in 11/27 new particle formation (NPF) events through June–August exceeded 75 nm, and the grown new particles may contribute to the population of cloud condensation nuclei. In contrast, no apparent growth in new particles with D_pgmax < 20 nm was observed in all of the events occurring in December, in approximately half of the NPF events occurring in April and only 2/27 of the NPF events occurring in June–August. New particles observed in the latter NPF events were too small to be activated as cloud condensation nuclei. Apparent new particle growth with D_pgmax ≤ 50 nm was observed in the remaining NPF events. The 11/27 NPF events with D_pgmax exceeded 75 nm were thereby analyzed in-depth. They are clearly three particle growth pattern classifications: one-stage growth, which is characterized by a continuous increase in D_pgmax ≥ 80 nm (4/11 NPF events), and two-stage growth-A and growth-B, which are characterized by either no apparent growth (two-stage growth-A) or a shrinkage of particles (two-stage growth-B) in the middle 2–4 hours of the growth period (7/11 NPF events). Combining the observations of gaseous pollutants and the measured (or modeled) concentrations of particulate chemical species, the three growth patterns were discussed in terms of the spatial heterogeneity of NPF, the formation of secondary aerosols and the evaporation of semi-volatile particulates. Secondary organic species and NH₄NO₃ were argued to be two major contributors to the growth in new particles, but NH₄NO₃ likely contributed to growth only in the late afternoon and/or at nighttime.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/248842
专题	地球科学
推荐引用方式 GB/T 7714	Liya Ma, Yujiao Zhu, Mei Zheng, Yele Sun, Lei Huang, Xiaohuan Liu, Yang Gao, Yanjie Shen, Huiwang Gao, and Xiaohong Yao. Investigating three patterns of new particles growing to cloud condensation nuclei size in Beijing's urban atmosphere[J]. Atmospheric Chemistry and Physics,2020.
APA	Liya Ma, Yujiao Zhu, Mei Zheng, Yele Sun, Lei Huang, Xiaohuan Liu, Yang Gao, Yanjie Shen, Huiwang Gao, and Xiaohong Yao.(2020).Investigating three patterns of new particles growing to cloud condensation nuclei size in Beijing's urban atmosphere.Atmospheric Chemistry and Physics.
MLA	Liya Ma, Yujiao Zhu, Mei Zheng, Yele Sun, Lei Huang, Xiaohuan Liu, Yang Gao, Yanjie Shen, Huiwang Gao, and Xiaohong Yao."Investigating three patterns of new particles growing to cloud condensation nuclei size in Beijing's urban atmosphere".Atmospheric Chemistry and Physics (2020).