气候变化领域集成服务门户(CCPortal): Secondary Inorganic Ions Characteristics in PM2.5 Along Offshore and Coastal Areas of the Megacity Shanghai

CCPortal

DOI	10.1029/2021JD035139
	Secondary Inorganic Ions Characteristics in PM2.5 Along Offshore and Coastal Areas of the Megacity Shanghai
	Sun J.; Chen H.; Mao J.; Zhao J.; Zhang Y.; Wang L.; Wang X.; Ouyang H.; Tang X.; George C.; Chen J.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:20
英文摘要	Secondary inorganic ions are important constituents of PM2.5 that play an important role in global climate change through direct and indirect radiative forcing. To investigate the influence of ship emissions on coastal cities, we launched a cruise ship campaign offshore of the East China Sea (ECS) and two field observation sites in the megacity of Shanghai using 1-hr time-resolved water-soluble ion chromatography from June 3 to June 27, 2017. Three main secondary inorganic soluble ions in the atmosphere of the ECS, that is, non-sea-salt sulfate (nss-SO42−), NO3− and NH4+, were 8.87, 4.94, and 4.65 μg m−3, respectively. While their values at the Pudong (PD) station in urban Shanghai were 6.33, 9.47, and 4.74 μg m−3 and at the Dianshanhu (DSH) station in suburban Shanghai were 7.33, 10.01, and 6.78 μg m−3, respectively. Nss-SO42− was dominant in the PM2.5 in the atmosphere of the ECS (nss-SO42−/NO3− = 1.8), and mainly distributed near the Zhoushan Islands of the ECS. This indicated significant contributions from ship emissions. Based on the Community Multiscale Air Quality model, two main sources of nss-SO42− were identified: emissions and horizontal transport. These comprised over 90% of the nss-SO42−. The influence of ship emissions reached up to 31.6% of the total nss-SO42− alongside the cruise ship and near coastal parking ports in the Yangtze River Delta area, suggesting that more attention should be paid to ship emissions. © 2021. The Authors.
英文关键词	East China Sea; secondary inorganic ions; ship emission
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236954
作者单位	Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan Tyndall Center, Fudan University, Shanghai, China; CNRS, IRCELYON, University of Lyon, Université Claude Bernard Lyon 1, Villeurbanne, France; IRDR International Center of Excellence on Risk Interconnectivity and Governance on Weather/Climate Extremes Impact and Public Health, Fudan University, Institute of Atmospheric Sciences, Shanghai, China
推荐引用方式 GB/T 7714	Sun J.,Chen H.,Mao J.,et al. Secondary Inorganic Ions Characteristics in PM2.5 Along Offshore and Coastal Areas of the Megacity Shanghai[J],2021,126(20).
APA	Sun J..,Chen H..,Mao J..,Zhao J..,Zhang Y..,...&Chen J..(2021).Secondary Inorganic Ions Characteristics in PM2.5 Along Offshore and Coastal Areas of the Megacity Shanghai.Journal of Geophysical Research: Atmospheres,126(20).
MLA	Sun J.,et al."Secondary Inorganic Ions Characteristics in PM2.5 Along Offshore and Coastal Areas of the Megacity Shanghai".Journal of Geophysical Research: Atmospheres 126.20(2021).