||Application of Fine Scale Air Toxics Modeling with CMAQ (Community Multiscale Air Quality) to HAPEM5 (Hazardous Air Pollutant Exposure Model 5).
Ching, J. ;
Pierce, T. ;
Palma, T. ;
Hutzell, W. ;
Tang, R. ;
||Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.
Air quality ;
Toxic substances ;
Air pollution monitoring ;
Air pollution sources ;
Urban areas ;
Environmental transport ;
Human exposure ;
Risk assessment ;
Public health ;
Computerized simulation ;
CMAQ modeling system ;
Community Multiscale Air Quality(CMAQ) ;
Hazardous Air Pollutant Exposure Model(HAPEM)
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||The USEPA is developing the capability to link air toxics (AT) concentrations from an advanced photochemical grid model to the HAPEM (Hazardous Air Pollutant Exposure Model). The basis for AT modeling is the Community Multiscale Air Quality (CMAQ) modeling system, a one-atmosphere chemical transport model. Because the AT model must simulate the spatial distribution of toxic hot spots across an urban area, the CMAQ system needs to account for specific toxic compounds at a fine-scale grid resolution. This paper provides a preliminary demonstration towards applying the EPA neighborhood scale modeling paradigm for air toxics using CMAQ to the EPA advanced exposure model HAPEM5. For the HAPEM, the Version 5 replaces a previous version to be able to broaden the potential exposure to both temporal and spatial (sub-grid) variabilities in pollutant concentration.
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||68A; 68G; 57U; 91A