Contributions of global and regional sources to mercury deposition in New York State

A global/continental atmospheric modeling system was used to obtain preliminary estimates of the contributions of major source areas to mercury deposition in New York State. A modeling system that includes a global chemical transport model (CTM) and a nested continental CTM (TEAM) was used to simula...

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Veröffentlicht in:Environmental pollution (1987) 2003-01, Vol.123 (3), p.365-373
Hauptverfasser: Seigneur, Christian, Lohman, Kristen, Vijayaraghavan, Krish, Shia, Run-Lie
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container_end_page 373
container_issue 3
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container_title Environmental pollution (1987)
container_volume 123
creator Seigneur, Christian
Lohman, Kristen
Vijayaraghavan, Krish
Shia, Run-Lie
description A global/continental atmospheric modeling system was used to obtain preliminary estimates of the contributions of major source areas to mercury deposition in New York State. A modeling system that includes a global chemical transport model (CTM) and a nested continental CTM (TEAM) was used to simulate the atmospheric transport, transformations and deposition of mercury (Hg). Three scenarios were used: (1) a nominal scenario, (2) a scenario conducive to local deposition and (3) a scenario conducive to long-range transport. Deposition fluxes of Hg were analyzed at three receptor locations in New York State. For the nominal scenario, the anthropogenic emission sources (including re-emission of deposited Hg) in New York State, the rest of the contiguous United States, Asia, Europe, and Canada contributed 11–21, 25–49, 13–19, 5–7, and 2–5%, respectively to total Hg deposition at these three receptors. Natural sources contributed 16–24%. The results from the local deposition and long-range transport scenarios varied only slightly from these results. However, there are still uncertainties in our understanding of the atmospheric chemistry of Hg that are likely to affect these estimates of local, regional and global contributions. Comparison of model simulation results with data from the Mercury Deposition Network suggests that local and regional contributions may currently be overestimated.
doi_str_mv 10.1016/S0269-7491(03)00027-7
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subjects Air Pollutants - analysis
Applied sciences
Asia
Atmospheric model
Atmospheric pollution
Canada
Chemical transport model
Computer Simulation
Europe
Exact sciences and technology
Hg model
Industrial Waste
Mercury - analysis
Mercury model
Models, Chemical
Multi-scale modeling
New York
Pollutants physicochemistry study: properties, effects, reactions, transport and distribution
Pollution
Source contributions
United States
title Contributions of global and regional sources to mercury deposition in New York State
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