Record Display for the EPA National Library Catalog


Main Title Air Quality Modeling at Neighborhood Scales to Improve Human Exposure Assessment.
Author Ching, J. K. S. ; Lacser, A. ; Byun, D. ; Benjey, W. ;
CORP Author National Oceanic and Atmospheric Administration, Research Triangle Park, NC. Atmospheric Sciences Modeling Div. ;Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.
Publisher 2000
Year Published 2000
Stock Number PB2001-102832
Additional Subjects Air pollution monitoring ; Toxic substances ; Air quaity ; Urban areas ; Modeling ; Risk assessments ; Human exposures ; Spatial variations ; Concentrations ;
Library Call Number Additional Info Location Last
NTIS  PB2001-102832 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 6p
Air quality modeling is an integral component of risk assessment and of subsequent development of effective and efficient management of air quality. Urban areas introduce of fresh sources of pollutants into regional background producing significant spatial variability of the concentration fields and corresponding human exposures. Typically, air pollutant concentration data in urban areas used by exposure models are from central site monitors that provide limited or no information on spatial variability. This paper describes a methodology for bridging air quality dispersion modeling and exposure approaches to provide a basis for assessing the impacts of such concentration variation on human exposures. For this approach the Models-3 Community Multiscale Air Quality Modeling System (CMAQ) (Byun and Ching, 1999) spatial resolution was refined from 4km to 1.33 km. This preliminary sensitivity study will illustrate human exposure to several pollutants as a function of these grid sizes. The approach sets the stage for the modeling of exposure to air toxics.