Modeling of pollutant transport and removal during a regional sulfate episode |
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Authors: | Halük Özkaynak P. Barry Ryan Lance F. Bosart |
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Affiliation: | 1. Atmospheric and Environmental Research, Inc., 840 Memorial Drive, 02139, Cambridge, MA, USA 4. Department of Atmospheric Sciences, State University of New York at Albany, 1400 Washington Avenue, 12222, Albany, NY, USA
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Abstract: | As part of a multidisciplinary study performed for the National Commission on Air Quality, the phenomena of atmospheric transport and the removal of SO2 and SO4 ? during a major regional sulfate episode (the period July 18–25, 1978 in the eastern U.S.) had been examined. The main objective of this study was the evaluation and the quantification of varying source/receptor relationships under atmospheric conditions conducive to long-range transport of fine particulate matter. In the case study presented here, air mass trajectories were obtained using the numerical NMC trajectory predictions and the results of the isobaric trajectory computations at the 850 mb level. The effects of alternative regional SO2 emission reduction scenarios on the predicted ambient SO2 and SO4 ? concentrations were also investigated using the new modeling methods that were specifically developed for this purpose. |
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