气候变化领域集成服务门户(CCPortal): Spatial Distribution of Atmospheric Mercury Species in the Southern Ocean

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DOI	10.1029/2021JD034651
	Spatial Distribution of Atmospheric Mercury Species in the Southern Ocean
	Yue F.; Xie Z.; Yan J.; Zhang Y.; Jiang B.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:17
英文摘要	Antarctica and the surrounding Southern Ocean act as an important sink in the global mercury cycle; however, corresponding studies of atmospheric mercury species in these regions are still scarce. Here, we report large-scale observations of atmospheric gaseous elemental mercury (GEM) and gaseous oxidized mercury (GOM) in the Antarctic marine boundary layer (MBL) taken during a summer cruise. There is large variability in the spatial distribution of GOM, which is likely attributable to the diverse land surface types, including coastal Antarctica, sea-ice region, and oceanic region, along the cruise route. In coastal Antarctica, the highest GOM level (56.23 ± 47.74 pg·m−3) might be attributed to the significant in-situ oxidation there. Significant in-situ oxidation of GEM could also occur in the sea-ice region, causing the significant increase of GOM (up to 87.01 pg·m−3), while the uptake of the high content of sea-salt aerosols in sea-ice regions might efficiently eliminate GOM in the air, resulting in generally lower content of GOM (13.10 ± 14.48 pg·m−3) in the sea-ice region. In the oceanic region, the lowest level of GOM (3.95 ± 4.69 pg·m−3) is due to both the uptake of sea-salt aerosols and the seasonal melting of first-year sea-ice. This study provides insight to understand the mechanisms of the atmospheric mercury cycle in various land surface types in the Antarctic MBL. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Antarctica; gaseous oxidized mercury (GOM); marine boundary layer (MBL); sea-ice; spatial distribution
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/237041
作者单位	Department of Environmental Science and Engineering, Institute of Polar Environment & Anhui Key Laboratory of Polar Environment and Global Change, University of Science and Technology of China, Hefei, China; Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China; Key Laboratory of Global Change and Marine-Atmospheric Chemistry & Third Institute of Oceanography, Ministry of Natural Resource, Xiamen, China; School of Atmospheric Sciences, Nanjing University, Nanjing, China
推荐引用方式 GB/T 7714	Yue F.,Xie Z.,Yan J.,et al. Spatial Distribution of Atmospheric Mercury Species in the Southern Ocean[J],2021,126(17).
APA	Yue F.,Xie Z.,Yan J.,Zhang Y.,&Jiang B..(2021).Spatial Distribution of Atmospheric Mercury Species in the Southern Ocean.Journal of Geophysical Research: Atmospheres,126(17).
MLA	Yue F.,et al."Spatial Distribution of Atmospheric Mercury Species in the Southern Ocean".Journal of Geophysical Research: Atmospheres 126.17(2021).