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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
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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). |
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