气候变化领域集成服务门户(CCPortal): Effects of emission reductions on major anthropogenic aerosol-radiation-cloud interactions in East Asia in winter during 2007-2020

CCPortal

DOI	10.1016/j.atmosenv.2024.120499
	Effects of emission reductions on major anthropogenic aerosol-radiation-cloud interactions in East Asia in winter during 2007-2020
	Hu, Yaxin; Zhuang, Bingliang; Zhou, Yinan; Gao, Yiman; Gao, Peng; Wang, Tijian; Li, Shu; Xie, Min; Li, Mengmeng
发表日期	2024
ISSN	1352-2310
EISSN	1873-2844
起始页码	327
卷号	327
英文摘要	East Asia (EA) has always been a highly concern region for human-induced climate change. In this study, a welldeveloped regional model RegCM4 is employed to investigate the influences of major anthropogenic aerosol (MAA, including sulfate and primary carbonaceous aerosols) variations from 2007 to 2020 on East Asian climates in winter. Results indicate that high MAA loadings in EA in winter mainly appear in Central to Eastern China. In most area of Asia (5 degrees-55 degrees N, 70 degrees-140 degrees E), the multi-year (2007-2020) mean instantaneous direct and total effective radiative forcing (IDRF and ERF) induced by MAAs are -4.22 and -3.90 W & sdot;m- 2 at the surface in winter, which are 2.29 and 1.96 times of those at the tropopause. In polluted area from southwest to center China (SWCC, 27-33 degrees N, 102-115 degrees E), these forcings are much stronger, which causes a dimmer, cooler and drier surface and further stabilizes the lower atmosphere. The multi-year mean sunshine duration, surface air temperature, precipitation, and boundary layer thickness are changed by -20.32 min & sdot;d- 1, -0.33 K, -0.08 mm & sdot;d- 1, and -12.51 m, respectively in SWCC in winter. Both the aerosol surface IDRF and ERF are weakened by above 30% in SWCC in winter since the Action Plan for Air Pollution Prevention and Control was carried out, which results in less surface dimming and cooling by 9.4 min & sdot;d- 1 and 0.23 K, respectively. During the most outbreak period in COVID-19 epidemic, the aerosol surface IDRF is weakened by approximately 46.87% compared to that before 2013 in SWCC, which may offset the aerosol cooling effect by 0.28 K.
英文关键词	Aerosols; Radiative forcing; Climate effects; RegCM4; East Asia; COVID-19
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001237182500001
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301735
作者单位	Nanjing University; Nanjing Normal University
推荐引用方式 GB/T 7714	Hu, Yaxin,Zhuang, Bingliang,Zhou, Yinan,et al. Effects of emission reductions on major anthropogenic aerosol-radiation-cloud interactions in East Asia in winter during 2007-2020[J],2024,327.
APA	Hu, Yaxin.,Zhuang, Bingliang.,Zhou, Yinan.,Gao, Yiman.,Gao, Peng.,...&Li, Mengmeng.(2024).Effects of emission reductions on major anthropogenic aerosol-radiation-cloud interactions in East Asia in winter during 2007-2020.ATMOSPHERIC ENVIRONMENT,327.
MLA	Hu, Yaxin,et al."Effects of emission reductions on major anthropogenic aerosol-radiation-cloud interactions in East Asia in winter during 2007-2020".ATMOSPHERIC ENVIRONMENT 327(2024).