气候变化领域集成服务门户(CCPortal): Geochemical characteristics and potential biogeochemical effect of water-soluble ions in atmospheric aerosols over the western boundary regions of Pacific Ocean

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DOI	10.1016/j.atmosres.2019.04.024
	Geochemical characteristics and potential biogeochemical effect of water-soluble ions in atmospheric aerosols over the western boundary regions of Pacific Ocean
	Wang Q.; Song J.; Li X.; Yuan H.; Li N.; Duan L.; Ren C.
发表日期	2019
ISSN	0169-8095
起始页码	101
结束页码	111
卷号	227
英文摘要	Atmospheric aerosol samples over the western boundary regions of Pacific Ocean were collected during August 2014–October 2014 and November 2015–February 2016 on R/V Ke Xue, and concentrations of major water-soluble ions, NO3 −, NO2 −, NH4+, PO4 3−, SO4 2−, MSA−, Cl−, and Na+, were determined to study their seasonal distributions, sources and biogeochemical effect. The results showed that the average concentrations of NO3 −, Cl− and Na+ were higher in winter, while the other ions had higher concentrations in summer. Most water-soluble ions presented obvious high-value centers in nearshore, indicating the significant influence of terrestrial input. Terrestrial input and marine emission were two major factors causing variation in concentrations of water-soluble ions, although their relative contributions were different in summer and winter. The average MSA/nss-SO4 2− ratios in summer and in winter were 1.60% and 2.10%, respectively, based on which the contributions of anthropogenic sources to the total SO4 2− were calculated to be 45.7% and 30.1% in summer and winter, respectively. Yet the contribution of biogenic sources to the total SO4 2−, which was 14.9% in summer and 14.4% in winter, showed no seasonal change. Apart from air masses from Asian continent, air masses from Japan as well as from Indonesia were also important terrestrial sources of aerosol ions according to air mass backward trajectories analysis. Based on the distribution patterns of aerosol ions, the studied area was divided into Southeast China coastal sea area and Western Pacific open sea area, and the dry deposition fluxes of DIN for these two areas were 6166 μg m−2 day−1 and 574 μg m−2 day−1, which could support 5.6–19.4% and ~13.8% of the new production in the East China Sea and the Western Pacific, respectively. Therefore, atmospheric aerosols as an important medium for transporting nutrients to the study area should attract much attention. © 2019 Elsevier B.V.
英文关键词	Atmospheric aerosols; Dry deposition flux; MSA/nss-SO4 2− ratios; Sources; Water-soluble ions; Western Pacific
语种	英语
scopus关键词	Atmospheric thermodynamics; Biogeochemistry; Deposition; Elementary particle sources; Ions; Meteorology; Oceanography; Average concentration; Biogeochemical effects; Dry deposition fluxes; Geochemical characteristic; Relative contribution; Seasonal distributions; Water-soluble ions; Western Pacific; Atmospheric aerosols; aerosol; ammonium; biogeochemistry; chlorine; concentration (composition); dry deposition; ion; nitrogen oxides; phosphate; sodium; sulfur compound; Pacific Ocean; Pacific Ocean (West)
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162277
作者单位	CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China
推荐引用方式 GB/T 7714	Wang Q.,Song J.,Li X.,et al. Geochemical characteristics and potential biogeochemical effect of water-soluble ions in atmospheric aerosols over the western boundary regions of Pacific Ocean[J],2019,227.
APA	Wang Q..,Song J..,Li X..,Yuan H..,Li N..,...&Ren C..(2019).Geochemical characteristics and potential biogeochemical effect of water-soluble ions in atmospheric aerosols over the western boundary regions of Pacific Ocean.Atmospheric Research,227.
MLA	Wang Q.,et al."Geochemical characteristics and potential biogeochemical effect of water-soluble ions in atmospheric aerosols over the western boundary regions of Pacific Ocean".Atmospheric Research 227(2019).