Article: Development and Application of a Multipollutant Model for Atmospheric Mercury Deposition

ABSTRACT

A multipollutant model, the Community Multiscale Air Quality model paired with the Model of Aerosol Dynamics, Reaction, Ionization, and Dissolution (CMAQ-MADRID), is extended to include a comprehensive treatment of mercury processes and is applied to the simulation of the atmospheric deposition of sulfate and mercury over the United States during 1996. Model performance is evaluated first by comparison with annual sulfate wet deposition data from the National Atmospheric Deposition Program's National Trends Network; the coefficient of determination r^sup 2^ is 0.77, and the model normalized error and bias are 53% and -8%, respectively. When actual precipitation data are used to ...

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