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R-LINE: A Line Source Dispersion Model for Near-Surface Releases
Citation:
Heist, D., V. Isakov, AND S. Perry. R-LINE: A Line Source Dispersion Model for Near-Surface Releases. Presented at To Another Federal Agency, RTP, NC, March 12, 2014.
Impact/Purpose:
The National Exposure Research Laboratory (NERL) Atmospheric Modeling and Analysis Division (AMAD) conducts research in support of EPA mission to protect human health and the environment. AMAD research program is engaged in developing and evaluating predictive atmospheric models on all spatial and temporal scales for forecasting the air quality and for assessing changes in air quality and air pollutant exposures, as affected by changes in ecosystem management and regulatory decisions. AMAD is responsible for providing a sound scientific and technical basis for regulatory policies based on air quality models to improve ambient air quality. The models developed by AMAD are being used by EPA, NOAA, and the air pollution community in understanding and forecasting not only the magnitude of the air pollution problem, but also in developing emission control policies and regulations for air quality improvements
Description:
Based on Science Advisory Board and the National Research Councilrecommendations, EPA-ORD initiated research on near-road air quality andhealth effects. Field measurements indicated that exposures to traffic-emitted air pollutants near roads can be influenced by complexities of roadway configurations(noise walls, depressed sections, etc.); to improve exposure metrics for future health studies, ORD initiated the development of a line-source dispersion model, R-LINE, to account for these important parameters.