Parameterization of Along-Wind Dispersion Coefficients based on Field and Wind Tunnel Data

  • Kang, Sung-Dae (Meteorological Research institute Korea Meterological Administration)
  • Published : 2001.03.01

Abstract

Observations related to the along-wind dispersion of puffs were collected from 12 field sites and from a wind tunnel experiment and used to test simple similarity relations. Because most of the date made use of concentration time series observation from fixed monitors, the basic observation was t, the standard deviation of the concentration time series. This data also allowed the travel time, t, from the source to the receptor to be estimated, from which the puff advective speed ue, could be determined. The along-wind dispersion coefficient, x, was then assumed to equal tue. The data, which extended over four orders of magnitude, supported the similarity relations t=0.1 t and x=1.8 $u^*$t, where t is the travel time and $u^*$ is the friction velocity. About 50% of the observations were within a factor of two of the predictions based on the similarity relations.

Keywords

References

  1. Quart. J. Roy. Met. Soc. v.94 The dispersion of a puff of passive contaminant in the constant stress region Chatwin, P.C.
  2. Atmos. Environ. v.26A A surface-layer similarity model for the dispersion of a skewed passive puff near the ground Van Ulden, A.P.
  3. Atmos. Environ. v.15 Along-wind diffusion of source transients Wilson, D.J.
  4. J. Appl. Meteorol. v.34 Representation of velocity gradient effects in a Gaussian puff model Sykes, R.I.;D.S. Henn
  5. Proc. Roy. Soc. A v.219 Dispersion of soluble matter in solvent flowing slowly through a tube Taylor, G.I.
  6. Phil. Trans. Roy. Soc. London A v.265 The influence of the turning of wind with height on crosswind diffusion. II. Meteorological Aspects of Air Pollution Pasquill, F.
  7. Q. J. Roy. Met. Soc. v.88 The effect of wind-shear on horizontal spread from an instantaneous ground source Saffman, P.G.
  8. J. Atmos. Sci. v.26 Diffusion in an Ekman layer Csanady, G.T.
  9. Q. J. Roy. Meteorol. Soc. v.91 The role of wind shear in horizontal diffusion of ambient particles Smith, F.B.
  10. 4th Conf. on Turb. and Diff., AMS v.45 Some observations of the along-wind dispersion paraameter Draxler, R.R.
  11. Bull. Am. Meteorol. Soc. v.70 The shape of large tropospheric clouds, or very like a whale Gifford, F.A.
  12. Atmos. Environ. v.32 Estimating the statistics of risk from a hazardous source at long range Smith, F.B.
  13. J. Appl. Meteorol. v.4 The variation of horizontal diffusion patterns with time for travel periods of one hour or longer Heffter, J.J.
  14. J. Appl. Meteorol. v.34 Some recent long-range diffusion observations Gifford, F.A.
  15. DPG-FR-97-058, UT 84022-5000 Phase I of DSWA transport and dispersion model validation study Biltoft, C.
  16. NOAA Tech Memo ERL ARL-225 The DSWA Dipole Pride 26 Field Experiment Watson, T.B.;R.E. Keislar;B. Reese;D.H. George;C.A. Biltoft
  17. Proceedings, Int. Conf. and Workshop on Modeling the Consequences of Accidental Releases of Hazardous Materials. AIChE v.3 Testing of the HEGADAS model using the Kit Fox field data Hanna, S.R.;J.C. Chang
  18. Air Poll. Modeling and Its Applic. XI Studies of dense gas dispersion from short-duration transient releases over rough surfaces during stable conditions Hanna, S.R.;K.W. Steinberg
  19. Experimental Description and Data Processing, and Vol. 2 Data Analysis for Enhanced Roughness Tests WRI v.1 Final Report on the 1995 Kit Fox Project Western Research Institute
  20. Report No. 97-7240.1D Characterization of Carbon Dioxide Releases Experiment 2 Coulombe, W.;J. Bowen;R. Egami;D. Freeman;D. Sheesley;J. Nordin;T. Routh;B. King
  21. J. Appl. Meteorol. v.9 An inert gas tracer system for monitoring the real-time history of a diffusing plume or puff Nickola, P.W.;J.D. Ludwick;J.V. Ramsdell, Jr.
  22. Pacific Northwest Laboratories Detailed Time-Histories of Concentrations Resulting from Puff and Short-period Releases of an Inert Radioactive Gas : A Volume of Atmospheric Diffusion Data, BNWL-1272. UC-53 Nickola, P.W.;J.V. Ramsdell, Jr.;J.D. Ludwick
  23. MRI-66-FR-374 v.1 Victoria Diffusion Trials Smith, T.B.;R.L. Miller
  24. MRI-64-FR-860 v.I Shoreline Diffusion Program, Oceanside, CA Smith, T.B.;B.L. Niemann
  25. DPG-FR-97-0001, UT 84022-5000 Phase II of DSWA transport and dispersion model validation study Biltoft, C.
  26. DPG/JCP-94/012, UT 84022-5000 Experimental Design and Results for the Long-Range Overwater Diffusion(LROD) Bowers, J.F.;G.E. Start;R.G. Carter;T.B. Watson;K.L. Clawson;T.L. Crawford
  27. The Geophysical Magazine v.1 no.2 An Analytical Study on Longitudinal Diffusion in the Atmospheric Boundary Layer Sato, J.
  28. Papers in Meteorol. and Geophys. v.32 The longitudinal spread of puff in the short range diffusion experiment Sato, J.;F. Kimura;T. Yoshikawa
  29. Air Pollution VI An experimental study of the dispersion of short-duration emissions in a turbulent boundary layer Robins, A.G.;J.E. Fackrell;C.A. Brebbia(ed.);C.F. Ratto(ed.);H Powers(ed.)