Abstract
A numerical model of planetary boundary-layer flow above two-dimensional gentle topography is developed as an extension of the surface-layer model described by Taylor (1977). Comparisons are made with surface-layer predictions for flow over Gaussian hills; and the flow at various angles above hills, valleys and escarpments is modelled. Some simple case studies of the influence of gentle two-dimensional topography on pollutant dispersion are made which indicate relatively minor effects on surface pollutant concentrations in comparison with results for dispersion above a plane surface.
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Arguchintsev, V. K., Gutman, L. N., Penenko, V. V., and Sokhov, T. Z.: 1975, ‘A Three Dimensional Model of the Mesometeorological Boundary-Layer’, Izv. Atmos. Oceanic Phys. 11, 331–339; (199–204 in English Translation).
Berlyand, M. E.: 1972, ‘Investigations of Atmospheric Diffusion Providing a Meteorological Basis for Air Pollution Control’, Atmos. Environ. 6, 379–388.
Bessemoulin, P. and Benarie, M.: 1974, ‘Contribution à l'étude de la diffusion des pollutants gazeux dans l'atmosphère’, Atmos. Environ. 8, 261–279.
Blackadar, A. K.: 1962, ‘The Vertical Distribution of Wind and Turbulent Exchange in a Neutral Atmosphere’, J. Geophys. Res. 67, 3095–3102.
Blackadar, A. K.: 1965, ‘A Single Layer Theory of the Vertical Distribution of Wind in a Baroclinic Neutral Atmospheric Boundary Layer’, Final report, AFCRL-65-631, Dept. of Meteorology, Pennsylvania State University, 22 pp.
Danard, M. B.: 1972, ‘A Numerical Model for Meso-Scale Orographic Influences on Surface Wind Speed and Direction’, Report prepared for Pollution Control Branch, British Columbia Water Resources Service. Dept. of Mech. Eng., University of Waterloo, December 1972, 52 pp.
Defant, F.: 1951, ‘Local Winds’, in T. F. Malone (ed.), Compendium of Meteorology, Amer. Meteorol. Soc., Boston, pp. 655–672.
Estoque, M. A., Gross, J., and Lai, H. W.: 1976, ‘A Lake Breeze over Southern Lake Ontario’, Monthly Weather Rev. 104, 386–396.
Gent, P. R. and Taylor, P. A.: 1976, ‘A Numerical Model of the Airflow Above Water Waves’, J. Fluid Mech. 77, 105–128.
Hinze, J. O.: 1959, Turbulence, McGraw-Hill, New York, 586 pp.
Howarth, L.: 1959, ‘Laminar Boundary Layers’, in C. Truesdell (ed.), Encyclopaedia of Physics, VIII/I, Springer, Berlin.
Jackson, P. S. and Hunt, J. C. R.: 1975, ‘Turbulent Wind Flow over a Low Hill’, Quart. J. Roy. Meteorol. Soc. 101, 929–956.
Lumley, J. L. and Khajeh-Nouri, B.: 1974, ‘Computational Modelling of Turbulent Transport’, Adv. Geophys. 18A, 169–192.
Mahrer, Y. and Pielke, R. A.: 1975, ‘A Numerical Study of the Air Flow over Mountains using the Two Dimensional Version of the University of Virginia Mesoscale Model’, J. Atmos. Sci. 32, 2144–2155.
Munn, R. E.: 1966, Descriptive Micrometeorology, Academic Press, New York, 245 pp.
Tapp, M. C. and White, P. W.: 1976, ‘A Non-Hydrostatic Mesoscale Model’, Quart. J. Roy. Meteorol. Soc. 102, 277–296.
Taylor, P. A.: 1969, ‘On Planetary Boundary-Layer Flow under Conditions of Neutral Thermal Stability’, J. Atmos. Sci. 26, 427–431.
Taylor, P. A.: 1976, ‘Numerical Modelling of the Effects of Gentle Topography on Airflow and Pollutant Dispersal in the Surface and Planetary Boundary-Layers’, Final Report SZ01.KM601–5–0472, Atmospheric Environment Service, Downsview.
Taylor, P. A.: 1977, ‘Some Numerical Studies of Surface Boundary-Layer Flow above Gentle Topography’, Boundary-Layer Meteorol. 11, 439–465.
Taylor, P. A. and Delage, Y.: 1971, ‘A Note on Finite Difference Schemes for the Surface and Planetary Boundary Layers’, Boundary-Layer Meteorol. 2, 108–121.
Taylor, P. A., Gent, P. R., and Keen, J. M.: 1976, ‘Some Numerical Solutions for Turbulent Boundary-Layer Flow above Fixed, Rough, Wavy Surfaces’, Geophys. J. Roy. Astron. Soc. 44, 177–201.
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Taylor, P.A. Numerical studies of neutrally stratified planetary boundary-layer flow above gentle topography. Boundary-Layer Meteorol 12, 37–60 (1977). https://doi.org/10.1007/BF00116397
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DOI: https://doi.org/10.1007/BF00116397