气候变化领域集成服务门户(CCPortal): Increased new particle yields with largely decreased probability of survival to CCN size at the summit of Mt. Tai under reduced SO2emissions

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DOI	10.5194/acp-21-1305-2021
	Increased new particle yields with largely decreased probability of survival to CCN size at the summit of Mt. Tai under reduced SO2emissions
	Zhu Y.; Xue L.; Gao J.; Chen J.; Li H.; Zhao Y.; Guo Z.; Chen T.; Wen L.; Zheng P.; Shan Y.; Wang X.; Wang T.; Yao X.; Wang W.
发表日期	2021
ISSN	1680-7316
起始页码	1305
结束页码	1323
卷号	21 期号:2
英文摘要	Because anthropogenic sulfur dioxide (SO2) emissions have decreased considerably in the last decade, PM2.5 pollution in China has been alleviated to some extent. However, the effects of reduced SO2 on the particle number concentrations and subsequent contributions of grown new particles to cloud condensation nuclei (CCN) populations, particularly at high altitudes with low aerosol number loadings, are poorly understood. In contrast, the increase in provincial forest areas in China with rapid afforestation over the last few decades expectedly increases the biogenic emissions of volatile organic compounds and their oxidized products as nucleating precursors therein. In this study, we evaluated the campaign-based measurements made at the summit of Mt. Tai (1534 m a.s.l.) from 2007 to 2018. With the decrease in SO2 mixing ratios from 15 ± 13 ppb in 2007 to 1.6 ± 1.6 ppb in 2018, the apparent formation rate (FR) of new particles and the net maximum increase in the nucleation-mode particle number concentration (NMINP) in the spring campaign of 2018 was 2- to 3-fold higher than those in the spring campaign of 2007 with almost the same occurrence frequency of new particle formation (NPF) events. In contrast, the campaign-based comparison showed that the occurrence frequency, in which the maximum geometric median diameter of the grown new particles (Dpgmax) was > 50 nm, decreased considerably from 43 % 78 % of the NPF events before 2015 to < 12 % in 2017 2018. Assuming > 50 nm as a CCN threshold size at high supersaturations, the observed net CCN production decreased from 3.7 × 103 cm-3 (on average) in the five campaigns before 2015 to 1.0 × 103 cm-3 (on average) in the two campaigns in 2017 2018. We argue that the increases in the apparent FR and NMINP are mainly determined by the availability of organic precursors that participate in nucleation and initial growth, whereas the decrease in the growth probability is caused by the reduced emissions of anthropogenic precursors. However, large uncertainties still exist because of a lack of data on the chemical composition of these smaller particles. © 2021 Author(s).
语种	英语
scopus关键词	atmospheric pollution; biogenic emission; cloud condensation nucleus; particulate matter; probability; sulfur dioxide; survival; volatile organic compound; China; Shandong; Tai Shan
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247192
作者单位	Environment Research Institute, Shandong University, Qingdao, 266237, China; State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Collaborative Innovation Center for Climate Change, Jiangsu Province, Nanjing, 210023, China; Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China; Taishan National Reference Climatological Station, Tai'an, 271000, China; Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hong Kong, 99907, Hong Kong; Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
推荐引用方式 GB/T 7714	Zhu Y.,Xue L.,Gao J.,et al. Increased new particle yields with largely decreased probability of survival to CCN size at the summit of Mt. Tai under reduced SO2emissions[J],2021,21(2).
APA	Zhu Y..,Xue L..,Gao J..,Chen J..,Li H..,...&Wang W..(2021).Increased new particle yields with largely decreased probability of survival to CCN size at the summit of Mt. Tai under reduced SO2emissions.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(2).
MLA	Zhu Y.,et al."Increased new particle yields with largely decreased probability of survival to CCN size at the summit of Mt. Tai under reduced SO2emissions".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.2(2021).