气候变化领域集成服务门户(CCPortal): Contrasting Response of Ultrafine Particle Number and PM2.5 Mass Concentrations to Clean Air Action in China

CCPortal

DOI	10.1029/2021GL093886
	Contrasting Response of Ultrafine Particle Number and PM2.5 Mass Concentrations to Clean Air Action in China
	Zhao, S. P.; Yu, Y.; Yin, D. Y.; Qin, D. H.
通讯作者	Zhao, SP ; Yu, Y (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenviornm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou, Peoples R China. ; Zhao, SP (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenviornm & Resources, State Key Lab Cryospher Sci, Lanzhou, Peoples R China.
发表日期	2021
ISSN	0094-8276
EISSN	1944-8007
卷号	48 期号:13
英文摘要	The strictest ever Clean Air Action has been implemented since 2013 at nationwide scale in China. Nevertheless, PM2.5 (particulate matter with aerodynamic diameter smaller than 2.5 mu m) mass and number of ultrafine particles (UFPs, the particles with diameters smaller than 100 nm) exhibited contrasting response to the emission mitigation policies. Unlike reduction of PM2.5 and number of accumulation mode particles, UFPs number decreased from 2012 to 2015, and then has begun to increase sharply since 2016, and annual change of number in nucleation mode particles can reach 40% at noontime during 2017-2019. We examined inter-annual trends of mode diameter, frequency of new particle formation (NPF) events, formation and growth rates, and particles were found to be much finer and NPF events have been more frequent since 2017. The much higher temperature and stronger solar radiation induced by PM2.5 reduction could promote the formation of secondary aerosol particles at noon.
关键词	LONG-TERM OBSERVATIONS SIZE DISTRIBUTIONS BLACK CARBON NUCLEATION EVENTS AEROSOL URBAN TRENDS GROWTH POLLUTION HISTORY
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000694024100003
来源期刊	GEOPHYSICAL RESEARCH LETTERS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253601
作者单位	[Zhao, S. P.; Yu, Y.] Chinese Acad Sci, Northwest Inst Ecoenviornm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou, Peoples R China; [Zhao, S. P.; Qin, D. H.] Chinese Acad Sci, Northwest Inst Ecoenviornm & Resources, State Key Lab Cryospher Sci, Lanzhou, Peoples R China; [Yin, D. Y.] Chinese Acad Sci, Northwest Inst Ecoenviornm & Resources, Key Lab Desert & Desertificat, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Zhao, S. P.,Yu, Y.,Yin, D. Y.,et al. Contrasting Response of Ultrafine Particle Number and PM2.5 Mass Concentrations to Clean Air Action in China[J]. 中国科学院西北生态环境资源研究院,2021,48(13).
APA	Zhao, S. P.,Yu, Y.,Yin, D. Y.,&Qin, D. H..(2021).Contrasting Response of Ultrafine Particle Number and PM2.5 Mass Concentrations to Clean Air Action in China.GEOPHYSICAL RESEARCH LETTERS,48(13).
MLA	Zhao, S. P.,et al."Contrasting Response of Ultrafine Particle Number and PM2.5 Mass Concentrations to Clean Air Action in China".GEOPHYSICAL RESEARCH LETTERS 48.13(2021).