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ISSUES AND CHALLENGES IN MODELING CHILDREN'S LONGITUDINAL EXPOSURES: AN OZONE STUDY
Citation:
XUE, J., V. G. ZARTARIAN, AND H. A. OZKAYNAK. ISSUES AND CHALLENGES IN MODELING CHILDREN'S LONGITUDINAL EXPOSURES: AN OZONE STUDY. Presented at ISEA/ISEE 2006, Paris, FRANCE, September 02 - 06, 2006.
Impact/Purpose:
The overall goal of this task is to evaluate, refine, and disseminate a peer-reviewed state-of-the science probabilistic model for improving estimates of human exposure and dose to multimedia, multipathway pollutants. The primary objectives of this research are the following:
Evaluate and refine the dietary (food and drinking water) exposure module and incorporate it into the SHEDS-Multimedia code.
Evaluate and refine the residential fugacity-based source-to-concentration module and incorporate it into the SHEDS-Multimedia code.
Improve the simulation of longitudinal exposure.
Develop and evaluate procedures for modeling multiple pollutants simultaneously.
Complete the SHEDS-Multimedia version 3 (aggregate) model with interface and documentation; evaluate with available data sets.
Peer review, publish, and make available the SHEDS-Multimedia model and model components.
Description:
Modeling children's exposures is a complicated, data-intensive process. Modeling longitudinal exposures, which are important for regulatory decision making, especially for most air toxics, adds another level of complexity and data requirements. Because it is difficult to model inter- and intra-personal variability for exposure model inputs, there is potential for inaccurate estimation of upper percentiles of longitudinal exposure distributions