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Published February 20, 1998 | public
Journal Article

Size-resolved and chemically resolved model of atmospheric aerosol dynamics


A three-dimensional, size-resolved and chemically resolved aerosol model is developed. Gas-to-particle conversion is represented by dynamic mass transfer between the gas and aerosol phases. Particle-phase thermodynamics is computed by a new thermodynamic model, Simulating Composition of Atmospheric Particles at Equilibrium 2. The aerosol model is applied to simulate gas and aerosol behavior in the August 27–29, 1987, episode in the South Coast Air Basin of California. The assumption that volatile inorganic species such as NH₄NO₃ are at instantaneous, local equilibrium is examined.

Additional Information

This work was supported by the Electric Power Research Institute (EPRI), the IBM Environmental Research Program, and the General Motors Corporation. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of EPRI and/or the IBM Corporation.

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August 22, 2023
October 25, 2023