DOI: 10.1016/j.atmosenv.2015.07.015
Scopus记录号: 2-s2.0-84937900626
论文题名: European and Mediterranean mercury modelling: Local and long-range contributions to the deposition flux
作者: Gencarelli C ; N ; , De Simone F ; , Hedgecock I ; M ; , Sprovieri F ; , Yang X ; , Pirrone N
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 117 起始页码: 162
结束页码: 168
语种: 英语
英文关键词: Deposition
; Mediterranean
; Mercury
; Modelling
Scopus关键词: Atmospheric chemistry
; Atmospheric movements
; Deposition
; Ecosystems
; Meteorological problems
; Models
; Oxidation
; Anthropogenic emissions
; Atmospheric depositions
; Atmospheric oxidation
; Emission inventories
; Marine environment
; Mediterranean
; Oxidation mechanisms
; Toxic methylmercury
; Mercury (metal)
; mercury
; anthropogenic source
; atmospheric chemistry
; atmospheric deposition
; emission inventory
; fish
; food chain
; food consumption
; global change
; health risk
; long range transport
; marine atmosphere
; mercury (element)
; methylmercury
; precipitation (chemistry)
; public health
; Article
; atmospheric deposition
; atmospheric transport
; carbon footprint
; dry deposition
; mathematical model
; oxidation
; precipitation
; priority journal
; simulation
; summer
; wet deposition
; winter
; Europe
; Mediterranean Sea
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: Mercury (Hg) is a global pollutant that is known to have adverse effects on human health, and most human exposure to toxic methylmercury is through fish consumption. Soluble Hg compounds in the marine environment can be methylated in the water column and enter the base of the food chain. Atmospheric deposition is the most important pathway by which Hg enters marine ecosystems. The atmospheric chemistry of Hg has been simulated over Europe and the Mediterranean for the year 2009, using the WRF/Chem model and employing two different gas phase Hg oxidation mechanisms. The contributions to the marine deposition flux from dry deposition, synoptic scale wet deposition and convective wet deposition have been determined. The Hg deposition fluxes resulting from transcontinental transport and local/regional emission sources has been determined using both Br/BrO and O3 /OH atmospheric oxidation mechanisms. The two mechanisms give significantly different annual deposition fluxes (129 Mg and 266 Mg respectively) over the modelling domain. Dry deposition is more significant using the O3 /OH mechanism, while proportionally convective wet deposition is enhanced using the Br/BrO mechanism. The simulations using the Br/BrO oxidation compared best with observed Hg fluxes in precipitation. Local/regional Hg emissions have the most impact within the model domain during the summer. A comparison of simulations using the 2005 and 2010 AMAP/UNEP Hg emission inventories show that although there is a decrease of 33% in anthropogenic emissions between the two reference years, the total simulated deposition in the regions diminishes by only 12%. Simulations using the 2010 inventory reproduce observations somewhat better than those using the 2005 inventory for 2009. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81619
Appears in Collections: 气候变化事实与影响
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作者单位: CNR-Institute of Atmospheric Pollution Research, Division of Rende, UNICAL-Polifunzionale, Rende, Italy; British Antarctic Survey, High Cross, Madingley Road, Cambridge, United Kingdom; CNR-Institute of Atmospheric Pollution Research, Area della Ricerca di Roma 1, Via Salaria km 29, 300, Monterotondo, Rome, Italy
Recommended Citation:
Gencarelli C,N,, De Simone F,et al. European and Mediterranean mercury modelling: Local and long-range contributions to the deposition flux[J]. Atmospheric Environment,2015-01-01,117