A method for estimating urban background concentrations in support of hybrid air pollution modeling for environmental health studies.

ABSTRACT: Exposure studies rely on detailed characterization of air quality, either from sparsely located routine ambient monitors or from central monitoring sites that may lack spatial representativeness. Alternatively, some studies use models of various complexities to characterize local-scale air quality, but often with poor representation of background concentrations. A hybrid approach that addresses this drawback combines a regional-scale model to provide background concentrations and a local-scale model to assess impacts of local sources. However, this approach may double-count sources in the study regions. To address these limitations, we carefully define the background concentration as the concentration that would be measured if local sources were not present, and to estimate these backgroun

SUBMITTER: Arunachalam S 

PROVIDER: S-EPMC4210993 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature