globalchange  > 气候减缓与适应
DOI: 10.1029/2018JD028350
Scopus记录号: 2-s2.0-85053309523
论文题名:
Assessment of Regional Mercury Deposition and Emission Outflow in Mainland China
作者: Wang X.; Lin C.-J.; Feng X.; Yuan W.; Fu X.; Zhang H.; Wu Q.; Wang S.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:17
起始页码: 9868
结束页码: 9890
语种: 英语
英文关键词: CMAQ-Hg ; deposition ; emission outflow ; mass balance ; mercury pollution
英文摘要: Mainland China is the largest emission region of anthropogenic mercury (Hg) in the world. There have been concerns regarding the emission outflow and chemical transport budget of Hg in the region. Earlier assessments of Hg chemical transport were based on relatively outdated emission data. Recent estimates for anthropogenic (Wu et al., 2016, https://doi.org/10.1021/acs.est.6b04308) and natural Hg emissions (X. Wang, Lin, et al., 2016, https://doi.org/10.5194/acp-16-11125-2016) show substantial differences from earlier emission inventories. In this study, we applied the updated Hg emission estimates to reassess the regional transport budget using Community Multiscale Air Quality-Hg v5.1. Our results show that the variation of simulated concentration, deposition, and associated emission outflow of Hg are primarily influenced by the spatial-temporal variation of Hg emissions, monsoon shifts, and particulate matter pollution in China. Total Hg deposition in Mainland China is estimated to be 422 Mg/year, and approximately two thirds of the deposition is contributed by domestic emissions. The net Hg transport budget from Mainland China is 511 Mg/year, contributing to 10% of Hg deposition in other regions of the world. This reassessment points to a ~25% reduction in total annual outflow compared to the previous estimate by Lin et al. (2010, https://doi.org/10.5194/acp-10-1853-2010). Such reduction is mainly caused by changes in Hg emission quantity, speciation, and spatial/temporal distributions. More modeling studies focusing on reducing uncertainties of emission inventories and Hg atmospheric chemistry are needed for continuous assessment of Hg emission outflow in this emission-intensive region. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113179
Appears in Collections:气候减缓与适应

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作者单位: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, China; University of Chinese Academy of Sciences, Huairou, China; Center for Advances in Water and Air Quality, Lamar University, Beaumont, TX, United States; Department of Civil and Environmental Engineering, Lamar University, Beaumont, TX, United States; State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing, China

Recommended Citation:
Wang X.,Lin C.-J.,Feng X.,et al. Assessment of Regional Mercury Deposition and Emission Outflow in Mainland China[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(17)
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