Abstract
A practical numerical scheme has been developed for simulating the dispersion of airborne pollutants in the atmosphere. The diffusion model can be used as a primary tool in air-quality control and environment planning management. A systematic perturbation method is introduced into the diffusion equation system which possesses altitude-dependent turbulent diffusion coefficients in obtaining an improved gaussian-type basic dispersion formula. The receptor-oriented urban dispersion model is modified to include the concentration calculation of finite-length and random oriented line sources of variable source height. Hourly averaged concentration distributions of the relatively inert carbon monoxide released by motor vehicles and industrial sources over a typical urban area are calculated for several representative traffic and meteorological conditions. Depending on the height of the inversion layer, urban size, pollution inventory and other relevant meteorological conditions, the accumulative contribution due to the altitude-dependent turbulent diffusion coefficients on the pollutant concentration distribution can be significant. (Author/TRRL)
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
