Trajectory analysis of wet deposition at Whiteface Mountain: A sensitivity study |
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| Institution: | 1. Department of Earth Systems Science, University of California, Irvine, Irvine, CA, United States;2. Department of Advanced Technology Fusion, Konkuk University, Seoul, South Korea;3. Air Quality Research Division, National Institute of Environmental Research, Incheon, South Korea;4. Department of Environmental Science, Hankuk University of Foreign Studies, Yongin, South Korea;5. Environmental Research Center, Hanseo University, Seosan-si, South Korea;6. APM Engineering Co. Ltd., Bucheon-si, South Korea;7. Department of Civil and Environmental Engineering, Konkuk University, Seoul, South Korea |
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| Abstract: | Meteorological trajectory analysis, MAP3S precipitation chemistry data, and hourly precipitation data at Whiteface Mountain (WFM) were used to determine the source direction of sulfate deposited in precipitation for 1978. A sensitivity study was done on source direction from different trajectory models, using different transport layers, and different precipitation information to determine the time deposition occurred. Results obtained from the different precipitation information indicate that precipitation data in 6-h increments or less are essential to correctly identify the trajectories associated with the wet deposition. Bias resulted when trajectories were not only associated with wet deposition. The direction of source regions, defined by 30° sectors, was much less dependent on the trajectory model or transport layer. Results suggest that over one-third of the wet sulfate deposition at WFM in 1978 arrived from the west-southwest, passing through the eastern Great Lakes region. |
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