气候变化领域集成服务门户(CCPortal): Long-range transport of anthropogenic air pollutants into the marine air: insight into fine particle transport and chloride depletion on sea salts

CCPortal

DOI	10.5194/acp-21-17715-2021
	Long-range transport of anthropogenic air pollutants into the marine air: insight into fine particle transport and chloride depletion on sea salts
	Xu L.; Liu X.; Gao H.; Yao X.; Zhang D.; Bi L.; Liu L.; Zhang J.; Zhang Y.; Wang Y.; Yuan Q.; Li W.
发表日期	2021
ISSN	1680-7316
起始页码	17715
结束页码	17726
卷号	21 期号:23
英文摘要	Long-range transport of anthropogenic air pollutants from East Asia can affect the downwind marine air quality during spring and winter. Long-range transport of continental air pollutants and their interaction with sea salt aerosol (SSA) significantly modify the radiative forcing of marine aerosols and influence ocean biogeochemical cycling. Previous studies poorly characterize variations of aerosol particles along with air mass transport from the continental edge to the remote ocean. Here, the research ship R/V Dongfanghong 2 traveled from the eastern China seas (ECS) to the northwestern Pacific Ocean (NWPO) to understand what and how air pollutants were transported from the highly polluted continental air to clean marine air in spring. A transmission electron microscope (TEM) was used to find the long-range transported anthropogenic particles and the possible Cl-depletion phenomenon of SSA in marine air. Anthropogenic aerosols (e.g., sulfur (S)-rich, S-soot, S-metal/fly ash, organic matter (OM)-S, and OM coating particles) were identified and dramatically declined from 87ĝ€¯% to 8ĝ€¯% by number from the ECS to remote NWPO. For the SSA aging, 87ĝ€¯% of SSA particles in the ECS were identified as fully aged, while the proportion of fully aged SSA particles in the NWPO decreased to 29ĝ€¯%. Our results highlight that anthropogenic acidic gases in the troposphere (e.g., SO2, NOx, and volatile organic compounds) could be transported to remote marine air and exert a significant impact on aging of SSA particles in the NWPO. The study shows that anthropogenic particles and gases from East Asia significantly perturb different aerosol chemistry from coastal to remote marine air. More attention should be given to the modification of SSA particles in remote marine areas due to the influence of anthropogenic gaseous pollutants. © Copyright:
语种	英语
scopus关键词	aerosol; air mass; air quality; anthropogenic source; atmospheric pollution; chloride; long range transport; marine atmosphere; radiative forcing; troposphere
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/246390
作者单位	Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, 310027, China; Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, Kumamoto, 862-8502, Japan
推荐引用方式 GB/T 7714	Xu L.,Liu X.,Gao H.,et al. Long-range transport of anthropogenic air pollutants into the marine air: insight into fine particle transport and chloride depletion on sea salts[J],2021,21(23).
APA	Xu L..,Liu X..,Gao H..,Yao X..,Zhang D..,...&Li W..(2021).Long-range transport of anthropogenic air pollutants into the marine air: insight into fine particle transport and chloride depletion on sea salts.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(23).
MLA	Xu L.,et al."Long-range transport of anthropogenic air pollutants into the marine air: insight into fine particle transport and chloride depletion on sea salts".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.23(2021).