Dispersion Modeling Guidance for Airports Addressing Local Air Quality Health Concerns (2017) / Chapter Skim
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25 Our model evaluation and other analyses have identified several areas of improvement for dispersion models applied to aircraft and airport sources. They include: 1.
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26 Dispersion Modeling Guidance for airports addressing Local air Quality health Concerns can be applied over local, regional and continental areas with progressively finer resolution in a series of nested grids. With the temporal flexibility of the model, simulations can evaluate short-term (weeks to months)
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Future research Needs 27 between 100–250 nanometers (Petzold et al. 1999; Wayson et al.
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28 Dispersion Modeling Guidance for airports addressing Local air Quality health Concerns leave the wing as trailing vortices, which are long lived and can cause safety issues for nearby aircraft. Extensive literature examines WT vortices, or wakes, and their effects on engine exhaust dispersion and concentrations (Garnier, Brunet, and Jacquin 1997; Schumann et al.
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Future research Needs 29 wind; similarly, an elevated crosswind line source could be generated by an aircraft releasing tracer along a path normal to the mean wind. The contractor's final report includes an analytical dose expression for a crosswind line source from which the concentration can be found by dividing the dose by the average time.
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30 Dispersion Modeling Guidance for airports addressing Local air Quality health Concerns AERMOD has a detailed three-tiered approach to predict NO2 given NOx concentrations: (1) the Plume Volume Molar Ratio Method (PVMRM)
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