DOI: 10.1016/j.atmosenv.2014.05.033
Scopus记录号: 2-s2.0-84901056319
论文题名: A simulation study of atmospheric mercury and its deposition in the Great Lakes
作者: Grant S ; L ; , Kim M ; , Lin P ; , Crist K ; C ; , Ghosh S ; , Kotamarthi V ; R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94 起始页码: 164
结束页码: 172
语种: 英语
英文关键词: Chinese emissions
; Deposition
; Integrated planning management
; Reactive gaseous mercury
Scopus关键词: Deposition
; Heavy metals
; Lakes
; Mercury (metal)
; Anthropogenic mercury emissions
; Atmospheric mercury
; Background concentration
; Comprehensive model
; Integrated planning
; Reactive gaseous mercury
; Seasonal variability
; Simulation studies
; Loading
; mercury
; anthropogenic source
; atmospheric deposition
; atmospheric pollution
; experimental study
; integrated approach
; mercury (element)
; pollution exposure
; sublethal effect
; air pollution
; article
; atmospheric deposition
; China
; concentration (parameters)
; dry deposition
; environmental management
; environmental protection
; evaluation study
; integrated planning management
; lake ecosystem
; molecular weight
; planning
; priority journal
; seasonal variation
; simulation
; wet deposition
; China
; Great Lakes [North America]
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The Great Lakes eco-region is one of the largest sources of fresh water in North America; however it is chronically exposed to heavy metal loadings such as mercury. In this study a comprehensive model evaluation was conducted to determine mercury loadings to the Great Lakes. The study also evaluated the relative impact of anthropogenic mercury emissions from China, regional and global sources on deposition to the Great Lakes. For the 2005 study period, CMAQ 4.7.1 model estimated a total of 6.4±0.5 metric tons of mercury deposited in the Great Lakes. The total deposition breakdown showed a net loading for Lake Superior of 1906±246kg/year which is the highest of all the lakes. Lake Michigan followed with 1645±203kg/year and 1511±107kg/year in Lake Huron. The lowest total deposition was seen in Lakes Erie and Ontario amassing annual totals of 837±107kg and 506±63kg, respectively. Wet and dry deposition of mercury were both significant pathways and exhibited strong seasonal variability with higher deposition occurring in the warmer months (June-November) and the lowest in winter. Wet deposition of RGM significantly influenced the deposition proportions accounting for roughly 90% of all mercury deposited. Of the three emission sources (global background, integrated planning management (IPM) and Chinese), global background concentrations represented the maximum impact to deposition loading in the Great Lakes, except for Lake Erie and parts of Lake Michigan. There was minimal seasonality for the global background, but differences in percentage contribution between dry (28-97%) and wet deposition (43-98%) was predicted. The contributions were seen mainly in the northern sections of the Great Lakes further away from IPM point sources. These findings suggest strong localized impact of IPM sources on the southernmost lakes. Deposition as a result of emissions from China exhibited seasonality in both wet and dry deposition and showed significant contributions ranging from 0.2 to 9%. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81066
Appears in Collections: 气候变化事实与影响
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作者单位: Center for Air Quality, Stocker 159, Chemical and Biomolecular Engineering, Ohio University, Athens, OH 45701, United States; Environmental Science Division, Argonne National Laboratory, Argonne, IL, United States
Recommended Citation:
Grant S,L,, Kim M,et al. A simulation study of atmospheric mercury and its deposition in the Great Lakes[J]. Atmospheric Environment,2014-01-01,94