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Reduced mercury deposition in New Hampshire from 1996 to 2002 due to changes in local sources |
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| Authors: | Han Young-Ji Holsen Thomas M Evers David C Driscoll Charles T |
| Institution: | a Department of Environmental Science, Kangwon National University, 192-1, Hyoja-2-dong, Chuncheon, Kangwon-Do 200-701, Republic of Korea b Department of Civil and Environmental Engineering, W.J. Rowley Laboratory, Box 5710, Clarkson University, Potsdam, NY 13699-5710, USA c BioDiversity Research Institute, 19 Flaggy Meadow Road, Gorham, ME 04038, USA d Department of Civil and Environmental Engineering, 151 Link Hall, Syracuse University, Syracuse, NY 13244, USA |
| Abstract: | Changes in deposition of gaseous divalent mercury (Hg(II)) and particulate mercury (Hg(p)) in New Hampshire due to changes in local sources from 1996 to 2002 were assessed using the Industrial Source Complex Short Term (ISCST3) model (regional and global sources and Hg atmospheric reactions were not considered). Mercury (Hg) emissions in New Hampshire and adjacent areas decreased significantly (from 1540 to 880 kg yr−1) during this period, and the average annual modeled deposition of total Hg also declined from 17 to 7.0 μg m−2 yr−1 for the same period. In 2002, the maximum amount of Hg deposition was modeled to be in southern New Hampshire, while for 1996 the maximum deposition occurred farther north and east. The ISCST3 was also used to evaluate two future scenarios. The average percent difference in deposition across all cells was 5% for the 50% reduction scenario and 9% for the 90% reduction scenario. |
| Keywords: | Mercury Deposition ISCST3 New Hampshire Coal utilities |
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