A Dispersion Model for Ground-Level and Elevated Releases from Continuous Point Sources

  • Ana G. Ulke
  • Nicolás A. Mazzeo
Part of the NATO • Challenges of Modern Society book series (NATS, volume 22)


The application of a dispersion model of pollutants released from near surface and elevated continuous point sources is presented. The model is based on the bidimensional semiempirical equation, with vertical profiles of wind and eddy diffusivity for the atmospheric boundary layer. The suggested model makes use of a continuous description of the dispersion processes in the different regimes of the atmospheric boundary layer and needs meteorological input parameters that can be estimated from routine measurements1. The model is used to simulate the dispersion of non-buoyant, non-depositing releases from several source heights in a variety of atmospheric stability and surface roughness conditions. The observational data were obtained in tracer experiments carried out at Copenhagen (Denmark)2. Lillestrom (Norway)3, Hanford (USA)4 and Cabauw (The Netherlands)5. The predicted cross-wind integrated concentrations were compared with the observed ones. All concentrations were normalized by source strength. Current quantitative measurements and techniques of model evaluation were obtained and applied6,7.


Atmospheric Boundary Layer Dispersion Model Residual Plot Atmospheric Stability Tracer Experiment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


  1. 1.
    A.G. Ulke, Diffusion-deposition of pollutants released in the atmospheric boundary layer. PhD Thesis. University of Buenos Aires, Argentina(1992).Google Scholar
  2. 2.
    S.E. Gryning and E. Lyck, Atmospheric dispersion from elevated sources in an urban area: comparison between tracer experiments and model calculations. J. Climate Appl. Met., 23: 651(1984).CrossRefGoogle Scholar
  3. 3.
    B. Sivertsen and T. Bøhler, Verification of dispersion estimates using tracer data, NILU Report TR 19 85. The Norwegian Institute for Air Research, Lillestrøm, Norway(1985).Google Scholar
  4. 4.
    J. C. Doran and T. W. Horst, An evaluation of Gaussian plume-depletion models with dual-tracer field measurements, Atmos. Env., 19:939(1985).CrossRefGoogle Scholar
  5. 5.
    H. van Duuren and F. T. M. Nieuwstadt, Dispersion experiments from the 213m high meteorological mast at Cabauw in the Netherlands, Atmospheric Pollution, Proc. of the Nth International Colloquium, Paris, M. M. Benarie, ed., 77(1980).Google Scholar
  6. 6.
    S. R. Hanna, J. C. Chang and D.G. Strimaitis, Hazardous gas model evaluation with field observations, Atmos. Env., 27A:2265(1993).Google Scholar
  7. 7.
    H. R. Olesen, Toward the establishment of a common framework for model evaluation, in Air Pollution Modeling and Its Application XI, S.E. Gryning and F.A. Schiermeier, ed., Plenum Press, New York. 519(1996).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • Ana G. Ulke
    • 1
  • Nicolás A. Mazzeo
    • 1
  1. 1.Dept. of Atmospheric SciencesUniversity of Buenos AiresBuenos AiresArgentina

Personalised recommendations