气候变化领域集成服务门户(CCPortal): The effect of COVID-19 restrictions on atmospheric new particle formation in Beijing

CCPortal

DOI	10.5194/acp-22-12207-2022
	The effect of COVID-19 restrictions on atmospheric new particle formation in Beijing
	Yan, Chao; Shen, Yicheng; Stolzenburg, Dominik; Dada, Lubna; Qi, Ximeng; Hakala, Simo; Sundstrom, Anu-Maija; Guo, Yishuo; Lipponen, Antti; Kokkonen, Tom, V; Kontkanen, Jenni; Cai, Runlong; Cai, Jing; Chan, Tommy; Chen, Liangduo; Chu, Biwu; Deng, Chenjuan; Du, Wei; Fan, Xiaolong; He, Xu-Cheng; Kangasluoma, Juha; Kujansuu, Joni; Kurppa, Mona; Li, Chang; Li, Yiran; Lin, Zhuohui; Liu, Yiliang; Liu, Yuliang; Lu, Yiqun; Nie, Wei; Pulliainen, Jouni; Qiao, Xiaohui; Wang, Yonghong; Wen, Yifan; Wu, Ye; Yang, Gan; Yao, Lei; Yin, Rujing; Zhang, Gen; Zhang, Shaojun; Zheng, Feixue; Zhou, Ying; Arola, Antti; Tamminen, Johanna; Paasonen, Pauli; Sun, Yele; Wang, Lin; Donahue, Neil M.; Liu, Yongchun; Bianchi, Federico; Daellenbach, Kaspar R.; Worsnop, Douglas R.; Kerminen, Veli-Matti; Petaja, Tuukka; Ding, Aijun; Jiang, Jingkun; Kulmala, Markku
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	12207
结束页码	12220
卷号	22 期号:18 页码:14
英文摘要	During the COVID-19 lockdown, the dramatic reduction of anthropogenic emissions provided a unique opportunity to investigate the effects of reduced anthropogenic activity and primary emissions on atmospheric chemical processes and the consequent formation of secondary pollutants. Here, we utilize comprehensive observations to examine the response of atmospheric new particle formation (NPF) to the changes in the atmospheric chemical cocktail. We find that the main clustering process was unaffected by the drastically reduced traffic emissions, and the formation rate of 1.5 nm particles remained unaltered. However, particle survival probability was enhanced due to an increased particle growth rate (GR) during the lockdown period, explaining the enhanced NPF activity in earlier studies. For GR at 1.5-3 nm, sulfuric acid (SA) was the main contributor at high temperatures, whilst there were unaccounted contributing vapors at low temperatures. For GR at 3-7 and 7-15 nm, oxygenated organic molecules (OOMs) played a major role. Surprisingly, OOM composition and volatility were insensitive to the large change of atmospheric NOx concentration; instead the associated high particle growth rates and high OOM concentration during the lockdown period were mostly caused by the enhanced atmospheric oxidative capacity. Overall, our findings suggest a limited role of traffic emissions in NPF.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000855112100001
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/273172
作者单位	Beijing University of Chemical Technology; University of Helsinki; Tsinghua University; Nanjing University; Finnish Meteorological Institute; Finnish Meteorological Institute; Fudan University; Chinese Academy of Meteorological Sciences (CAMS); Chinese Academy of Sciences; Chinese Academy of Meteorological Sciences (CAMS); Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS; Carnegie Mellon University; Aerodyne Research; Chinese Research Academy of Environmental Sciences
推荐引用方式 GB/T 7714	Yan, Chao,Shen, Yicheng,Stolzenburg, Dominik,et al. The effect of COVID-19 restrictions on atmospheric new particle formation in Beijing[J],2022,22(18):14.
APA	Yan, Chao.,Shen, Yicheng.,Stolzenburg, Dominik.,Dada, Lubna.,Qi, Ximeng.,...&Kulmala, Markku.(2022).The effect of COVID-19 restrictions on atmospheric new particle formation in Beijing.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(18),14.
MLA	Yan, Chao,et al."The effect of COVID-19 restrictions on atmospheric new particle formation in Beijing".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.18(2022):14.