An evaluation of an area source diffusion model for carbon monoxide in Rockford, Illinois
Cole, Alan L.
M.S. (Master of Science)
Department of Geography
Carbon monoxide; Air--Pollution--Rockford; Ill
A synoptic model for dispersion of carbon monoxide in a small urban area, Rockford, Illinois, was devised. The model uses automobiles as the sole source for the carbon monoxide and treats these sources mathematically as an area source. The diffusion equations used to simulate dispersion and atmospheric turbulence are those presented in the literature by other workers, and utilize the best empirical data available for estimating vertical plume spread in urban areas. The model is evaluated by comparing actual measurements made in Rockford with the output produced by the model. The evaluation shows a large difference in specific areas of Rockford when compared to reality since the concentrations produced by the model are always below 4.0 ppm with no spatial variation. Possible sources of errors are discussed as well as suggestions for improvements in empirical data available for use in the model. SYMAP produced maps showing contours of concentrations observed in the field are presented.
Krol, Alan, "An evaluation of an area source diffusion model for carbon monoxide in Rockford, Illinois" (1975). Graduate Research Theses & Dissertations. 1218.
Northern Illinois University
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