10.2190/6CKR-LJRB-UMAD-J7UC 6CKRLJRBUMADJ7UC 2 Modeling and Evaluation of Dispersion Parameters For Odors From Agricultural Sources 27 39 20020509 20020509 20020509 20020509 6CKRLJRBUMADJ7UC.pdf http://baywood.metapress.com/link.asp?target=contribution&id=6CKRLJRBUMADJ7UC 1 Yong Cheng Chen Steven J. Hoff Dwaine S. Bundy Iowa State University, Ames This article presents an evaluation of four models that are widely used in developing Gaussian plume models, based on the atmospheric stability class and the Pasquill-Gifford curves. the four statistics used to evaluate the models are the sum of residuals, the minimized sum of the squared residuals, the correlation coefficient, and the estimated error standard deviation. Evaluation shows that all of the four models have problems in fitting the Pasquill-Gifford data when the downwind distance increases from the source. A new model has been developed which fits the Pasquill-Gifford data more effectively than the previously developed models studied. F. Pasquill, Atmospheric Dispersion of Pollution, <i>Journal of the Royal Meteorological Society, 97</i>, pp. 369-395, 1971. F. L. Ludwig, L. S. Gasiorek, and R. E. Ruff, Simplification of a Gaussian Puff Model for Real-Time Minicomputer Use, <i>Atmospheric Environment, 11</i>, pp. 431-436, 1977. F. Pasquill and F. B. Smith, <i>Atmospheric Diffusion</i> (3rd Edition), Ellis Horwood Limited, New York, 1983. S. E. Gryning, A. A. Holtslag, J. S. Irwin, and B. Sivertseb, Applied Dispersion Modeling Based on Meteorological Scaling Parameters, <i>Atmospheric Environment, 21</i>, pp. 79-89, 1987. P. Zannetti, <i>Air Pollution Modeling</i>, Van Nostrand Reinhold, New York, 1990. D. B. Turner, <i>Workbook of Atmospheric Dispersion Estimates</i> (2nd Edition), CRC Press, Inc., Boca Raton, 1994. M. Sharan, A. K. Yadav, and M. P. Singh, Comparison of Sigma Schemes for Estimation of Air Pollution Dispersion in Low Winds, <i>Atmospheric Environment, 29</i>:16, pp. 2051-2059, 1995. K. A. Janni, Modeling Dispersion of Odorous Gases from Agricultural Sources, <i>Transactions of the ASAE, 25</i>, pp. 1721-1723, 1982. P. G. Carney and V. A. Dodd, A Comparison between Predicted and Measured Values for the Dispersion of Malodors from Slurry, <i>Journal of Agricultural Engineering Research, 44</i>, pp. 67-76, 1989. R. J. Smith, Dispersion of Odors from Ground Level Agricultural Sources, <i>Journal of Agricultural Engineering Research, 54</i>, pp. 187-200, 1993. J. Li, D. S. Bundy, S. J. Hoff, and Q. Liu, <i>Field Odor Measurement and Application of Gaussian Plume Model</i>, ASAE Paper No. 944054, ASAE, St. Joseph, 1994. A. E. Green, R. P. Singhal, and R. Venkateswar, Analytic Extensions of the Gaussian Plume Model, <i>Journal of Air Pollution Control Association, 30</i>:7, pp. 773-776, 1980. J. F. Bowers, J. R. Bjorkland, and C. S. Cheney, <i>Industrial Source Complex (ISC) Dispersion Odel User's Guide</i>, Report EPA-450/4-79-030, U. S. Environmental Protection Agency, 1979. R. W. McMullen, the Change of Concentration Standard Deviations with Distance, <i>Journal of the Air Pollution Control Association, 25</i>:10, pp. 1057-1058, 1975. R. C. Koch and S. D. Thayer, <i>Validation and Sensitivity Analysis of the Gaussian Plume Multiple Source Urban Diffusion Model</i>, National Technical Information Service, No. NTIS-PB-206951, Springfield, VA 22161, 1971. F. A. Gifford, Use of Routine Meteorological Observations for Estimating the Atmospheric Dispersion, <i>Nuclear Safety, 2</i>:4, pp. 47-57, 1961. G. Lorimer, <i>The AUSPLUME Gaussian Plume Dispersion Model</i>, Contract EPA/86-02, Environment Protection Authority, Melbourne, Victoria, Australia, 1986. J. V. Beck and K. J. Arnold, <i>Parameter Estimation in Engineering and Science</i>, John Wiley & Sons, New York, 1977. L. Blank, <i>Statistical Procedures for Engineering, Management, and Science</i>, McGraw-Hill Book Company, New York, 1980. R. L. Mason, R. F. Gunst, and J. L. Hess, <i>Statistical Design and Analysis of Experiments</i>, John Wiley & Sons, New York, 1989. J. M. Sweeten, D. L. Reddell, L. Schake, and B. Garner, Odor Intensities at Cattle Feedlots, <i>Transactions of the ASAE, 20</i>:3, pp. 502-508, 1977. J. R. Miner, <i>Avoiding Odor Nuisance Litigation</i>, in Proceedings: Nuisance Concerns in Animal Manure Management, University of Florida, Gainesville, Florida, 1995.