Overwater Dispersion in Coastal Regions

  • Steven R. Hanna
  • Robert J. Paine
  • Llovd L. Schulman


Air pollution sources such as oil platforms and ships are sometimes located near coastlines where the plumes can impact population centers. Models of overwater dispersion must account for the stability of the overwater boundary layer. An overwater dispersion model based on the standard Gaussian formula is described which uses measurements of the air-sea temperature difference, the wind speed, and the mixing depth to predict concentration patterns at the coastline. Internal boundary layers and complex terrain at the coastline are accounted for. This new model is evaluated using the results of three tracer experiments in United States coastal zones.


Boundary Layer Latent Heat Flux Internal Boundary Layer Buoyant Plume American Meteorological Society 
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  1. Briggs, G.A.: 1969, Plume Rise. USAEC Critical Review Series, TID-25075, Clearinghouse for Federal Scientific and Technical Information.Google Scholar
  2. Briggs, G.A.: 1973, ‘Diffusion Estimates for Small Emissions’, ATDL Cont. 79, ATDL, P.O. Box E, Oak Ridge, TN.CrossRefGoogle Scholar
  3. Briggs, G.A.: 1975, ‘Plume Rise Predictions’, Lectures on Air Pollution and Environmental Impact Analyses, American Meteorological Society, Boston, MA, pp 59–111.Google Scholar
  4. Businger, J.A.: 1973, ‘Turbulence Transfer in the Atmospheric Surface Layer’, Workshop 1n Micrometeorology. Am. Meteorol. Soc., 45 Beacon St., Boston, MA 67–100.Google Scholar
  5. Caughey, S.J.: 1982, ‘Observed Characteristics of the Atmospheric Boundary Layer’. Atmospheric Turbulence and Air Pollution Modeling. F.T.M. Nieuwstadt and H. Van Dop (eds.) Reidel Dordecht, Holland.Google Scholar
  6. Deardorff, J.W. and G.E. Willis: 1982, ‘Ground Level Concentrations Due to Fumigation into an Entraining Mixing Layer; Atmos.Environ., 16, 1159–1170.CrossRefGoogle Scholar
  7. Fox, D.G.: 1981, ‘Judging A1r Quality Model Performance: A Summary of the AMS Workshop on Dispersion Model Performance; Bull. Am.Meteorol. Soc., 62, 599–609.CrossRefGoogle Scholar
  8. Gifford, F.A.: 1968, ‘An Outline of Theories of Diffusion in the Lower Layers of the Atmosphere; In: Meteorology and Atomic Energy - 1968. D.H. Slade (ed.). USAEC Report TID-24190, pp 66–116.Google Scholar
  9. Golder, D: 1972, ‘Relations Among Stability Parameters 1n the Surface Layer’, Bound. Lav. Meteorol. 3, 47–58.CrossRefGoogle Scholar
  10. Hanna, S.R.: 1983, ‘A Simplified Scoring Scheme for Air Quality Models; Paper 83–36.6 at Annual A1r Pollution Control Association Meeting, available from APCA, Pittsburgh.Google Scholar
  11. Hanna, S.R., G.A. Briggs, J. Deardorff, B.A. Egan, F.A. Gifford, and F. Pasquill: 1977, ‘AMS Workshop on Stability Classification Schemes and Sigma Curves’, Bull. Am. Meteorol. Soc., 58, 1305–1309.Google Scholar
  12. Hanna, S.R., R.J. Paine and L.L. Schulman: 1984, ‘Users Guide to the Offshore and Coastal Dispersion (OCO) Model; prepared for the U.S. Department of the Interior by ERT, Inc., 696 Virginia Rd., Concord, MA.Google Scholar
  13. Heffter, J.L.: 1965, ‘The Variation of Horizontal Diffusion Parameters with Time for Travel Periods of One Hour or Longer; J. Appl.Meteorol. 4, 153–156.CrossRefGoogle Scholar
  14. Holland, J.Z.: 1981, ‘Contributions of GARP to our Knowledge of Tropical Atmospheric Phenomena’, AAAS Annual Meeting, Toronto, Canada, 8 January.Google Scholar
  15. Hosker, R.P.: 1974, ‘A Comparison of Estimation Procedures for Overwater Plume Dispersion’, Proceedings of the Symposium on Atmospheric Diffusion and Air Pollution. American Meteorological Society, 281–288.Google Scholar
  16. Hsu, S.A.: 1979, ‘An Operational Forecasting Model for the Variation of Mean Maximum Mixing Heights across the Coastal Zone’, Bound.Lay. Meteorol., 16, 93–98.Google Scholar
  17. Jackson, N.A.: 1976, ‘The Propagation of Modified Flow Downstream of a Change in Roughness’, Q.J. Roy. Met. Soc., 102. 924.Google Scholar
  18. Kondo, J.: 1975, ‘Air-Sea Bulk Transfer Conditions 1n Diabatic Conditions’, Bound. Lav. Meteorol., 9, 91–112.Google Scholar
  19. Lenschow, D.H., J.C. Wyngaard, and W.T. Pennell: 1980, ‘Mean Field and Second-Moment Budgets in a Baroclinic, Convective Boundary Layer’, J. Atmos. Sci.37: 1313–1326.CrossRefGoogle Scholar
  20. Lyons, W.A.: 1975, ‘Turbulent Diffusion and Pollutant Transport in Shoreline Environments’, Lectures on Air Poll, and Environ.Impact Analyses. American Meteorological Society, 136–208.Google Scholar
  21. Nieuwstadt, F.T.M.: 1977, ‘The Dispersion of Pollutants over a Water Surface”, Eight Int. Tech. Meeting on Air Poll. Modeling and its Applic. NATO/CCMS Doc. No. 80, 337–359.Google Scholar
  22. Panofsky, H.A. and G.W. Brier: 1963, ‘Some Applications of Statistics to Meteorology’. The Pennsylvania State University Press, University Park, PA, 224 pp.Google Scholar
  23. Panofsky, H.A., H. Tennekes, D.H. Lenschow and J.C. Wyngaard: 1977, ‘The Characteristics of Turbulent Velocity Components in the Surface Layer under Convective Conditions; Bound. Lay. Meteorol., 11. 355–361.CrossRefGoogle Scholar
  24. Raynor et al.: 1979, ‘Formation and Characteristics of Coastal Internal Boundary Layers During Onshore Flow’, Bound. Lav.Meteorol., 16, 487–514.CrossRefGoogle Scholar
  25. Schacher, G.E., K.L. Davidson and C.W. Fairall: 1982, ‘Atmospheric Marine Boundary Layer Convective Mixing Velocities in the California Coastal Region’, Atmos. Environ., 16. 1183–1192.CrossRefGoogle Scholar
  26. Schulman, L.L. and J.S. Scire: 1980, ‘Development of an Air Quality Dispersion Model for Aluminum Reduction Plants’, Document P07304A. Environmental Research & Technology, Inc., Concord, MA.Google Scholar
  27. Strimaitis, D.G., A. Venkatram and T.F. Lavery: 1983, ‘A Model to Estimate Concentrations during Plume Impingement’, Preprints.Sixth Symposium on Turbulence and Diffusion. Am. Meteorol. Soc., 28–31.Google Scholar
  28. Turner, D. 1969, Workbook of Atmospheric Dispersion Estimates. Office of Air Programs Publication No. AP-26. ILS. EPA, Research Triangle Park, NC.Google Scholar
  29. Zilitinkevich, S.S.: 1975, ‘Resistance Laws and Prediction Equations for the Depth of the Planetary Boundary Layer’, J. Atmos. Sci. 32, 741–752.CrossRefGoogle Scholar

Copyright information

© D. Reidel Publishing Company, Dordrecht, Holland 1984

Authors and Affiliations

  • Steven R. Hanna
    • 1
  • Robert J. Paine
    • 1
  • Llovd L. Schulman
    • 1
  1. 1.Environmental Research & Technology Inc.ConcordUSA

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