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OLS Field Name OLS Field Data
Main Title Community Scale Air Toxics Modeling with CMAQ.
Author Ching, J. ; Dupont, S. ; Herwehe, J. ; Tang, R. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab. ;National Oceanic and Atmospheric Administration, Oak Ridge, TN. Atmospheric Turbulence and Diffusion Div. ;Computer Sciences Corp., Research Triangle Park, NC.
Publisher 2003
Year Published 2003
Stock Number PB2004-100994
Additional Subjects Air pollution monitoring ; Toxic substances ; Particulates ; Air pollution sources ; Photochemistry ; Urban areas ; Emissions ; Spatial variations ; Concentration ; Human exposure ; Models ; Risk assessment ; CMAQ modeling system ; Community Multiscale Air Quality(CMSQ)
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB2004-100994 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/15/2004
Collation CD-ROM
Abstract
Consideration and movement for an urban air toxics control strategy is toward a community, exposure and risk-based modeling approach, with emphasis on assessments of areas that experience high air toxic concentration levels, the so-called hot spots. This strategy will require information that accurately maps and characterizes the spatial and temporal variability of such pollutants. Many air toxic pollutants are active in photochemistry and ambient concentration levels will, therefore, depend on both the magnitude of the secondary products from the inflow regional background as well as from fresh emissions. In principle, the Community Multi-scale Air Quality (CMAQ) modeling system, using multi-scale modeling attributes can provide the ambient concentrations of air toxics from both regional and local sources and through advanced treatment of chemical, transport and deposition pathways. This paper explores the CMAQ capability to model air toxics at fine scale to meet the desired air toxics assessments objectives.