The role of size-dependent dry deposition of sulfate aerosol in a three-dimensional Eulerian air quality model
Conference
·
OSTI ID:197431
- NOAA, Research Triangle Park, NC (United States)
- MCNC, Research Triangle Park, NC (United States)
The Regional Particulate Model, a three-dimensional Eulerian air quality model, was developed to investigate aerosol particle issues of important to the US EPA and to meet the demands of the Clean Air Act amendments of 1990. In addition to aerosol dynamics such as growth and coagulation, the model includes photochemistry, transport, and deposition. A new formulation of dry deposition as a function of the aerosol size distribution has been incorporated into the model. This formulation allows for the representation of dry deposition of total particle number and total particle mass by deposition velocities specifically formulated for these two quantities as a function of particle size. Results for the dry deposition of sulfate mass from the new model will be compared with those from the Tagged Species Engineering Model for a variety of local conditions. The behavior of the aerosol size distribution responding to the new formulation will also be discussed.
- OSTI ID:
- 197431
- Report Number(s):
- CONF-9405167--
- Country of Publication:
- United States
- Language:
- English
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