气候变化领域集成服务门户(CCPortal): Solubilities and deposition fluxes of atmospheric Fe and Cu over the Northwest Pacific and its marginal seas

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DOI	10.1016/j.atmosenv.2020.117763
	Solubilities and deposition fluxes of atmospheric Fe and Cu over the Northwest Pacific and its marginal seas
	Yang T.; Chen Y.; Zhou S.; Li H.; Wang F.; Zhu Y.
发表日期	2020
ISSN	1352-2310
卷号	239
英文摘要	Atmospheric input is an important exogenous source of Fe and Cu to the surface ocean. Here, we investigated temporal and spatial variations, solubilities, size distributions and deposition fluxes of aerosol Fe and Cu using a unique, new dataset including 3-year observations at Huaniao Island and two cruises during the springtimes of 2015 in the Northwest Pacific (NWP) and of 2017 in the Yellow and East China Seas (YECS). The mean concentrations of soluble aerosol Fe and Cu showed a seasonal variation over Huaniao Island with the highest and lowest values in winter and summer respectively, whilst the total Fe reached the maximum in spring. Their mean concentrations decreased significantly from the coastal island to the YECS and to the NWP. The solubility of aerosol Fe was inversely and positively correlated with crustal element Al and non-sea-salt-SO42- (nss-SO42-), respectively. Moreover, the size distribution of soluble Fe demonstrated major peaks in accord with nss-SO42- and a minor peak associated with total Fe. Based on the size distributions of total and soluble Fe, anthropogenic contribution and acid-enhanced dissolution were firstly estimated to be 61% and 32% of soluble Fe over Huaniao Island, 55% and 30% over the YECS, and 34% and 47% over the NWP, respectively. Unlike the Fe, the solubility of aerosol Cu was more correlated with relative humidity (RH). Our estimates of dry deposition fluxes of soluble Fe and Cu declined greatly from the coastal island 33.3 and 2.9 μg m−2 d−1 to the open Pacific 3.6 and 0.1 μg m−2 d−1, respectively. The fluxes of soluble Fe and Cu could vary asynchronously as a result of different origins and transport paths of air masses. Our concurrent study on aerosol Fe and Cu is very helpful for understanding the atmospheric deposition of bioavailable Fe and Cu to the ocean and their interactive effect on marine phytoplankton. © 2020 Elsevier Ltd
关键词	Dry deposition East China Sea Northwest Pacific Size distribution Solubility Wet deposition
语种	英语
scopus关键词	Aerosols; Atmospheric humidity; Copper; Deposition; Marine biology; Meteorological problems; Phytoplankton; Size distribution; Solubility; Anthropogenic contribution; Atmospheric depositions; Dry deposition fluxes; Enhanced dissolutions; Interactive effect; Marine phytoplankton; Mean concentrations; Temporal and spatial variation; Iron; copper; iron; aerosol; atmospheric deposition; concentration (composition); copper; phytoplankton; relative humidity; seasonal variation; size distribution; aerosol; Article; atmospheric deposition; autumn; humidity; mineral dust; priority journal; sea; seasonal variation; solubility; spring; summer; winter; China; Huaniao Island; Pacific Ocean; Pacific Ocean (Northwest); Shengsi Islands; Zhejiang; Zhoushan Islands
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/249007
作者单位	Shanghai Key Laboratory of Atmospheric Particle Pollution Prevention, Department of Environmental Science & Engineering, Fudan University, Jiangwan Campus, Shanghai, 200438, China; Institute of Eco-Chongming (IEC), No.3663 Northern Zhongshan Road, Shanghai, 200062, China; Institute of Atmospheric Sciences, Fudan University, Jiangwan Campus, Shanghai, 200438, China
推荐引用方式 GB/T 7714	Yang T.,Chen Y.,Zhou S.,et al. Solubilities and deposition fluxes of atmospheric Fe and Cu over the Northwest Pacific and its marginal seas[J],2020,239.
APA	Yang T.,Chen Y.,Zhou S.,Li H.,Wang F.,&Zhu Y..(2020).Solubilities and deposition fluxes of atmospheric Fe and Cu over the Northwest Pacific and its marginal seas.ATMOSPHERIC ENVIRONMENT,239.
MLA	Yang T.,et al."Solubilities and deposition fluxes of atmospheric Fe and Cu over the Northwest Pacific and its marginal seas".ATMOSPHERIC ENVIRONMENT 239(2020).