Abstract
Observations of flow over complex terrain taken at Risø during June–July 1978 and numerical studies confirm earlier findings that small variations in surface elevation have significant effects on mean wind profiles. Measured shear stresses in the nonequilibrium region of the flow are consistent with theory but quite different from those obtained assuming simple flux-profile relationships. These findings imply that flux-profile relationships can be quite complicated over other than simple homogeneous terrain.
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References
Elliott, W. P.: 1958, ‘The growth of the Atmospheric Internal Boundary-Layer’, Trans. Amer. Geophys. Union 39, 1048–1054.
Jensen, N. O. and Peterson, E. W.: 1978 ‘On the Escarpment Wind Profile’, Quart. J. Roy. Meteorol. Soc. 104, 719–728.
Norman, J. M., Perry, S. G., and Panofsky, H. A.: 1976, ‘Measurement and Theory of Horizontal Coherence at a Two-Meter Height’. Preprints Third Symp. Atmosphere Turbulence Air Quality, Raleigh, NC, Amer. Meteor. Soc., 26–31.
Panofsky, H. A. and Petersen, E. L.: 1972, ‘Wind Profiles and Change of Terrain Roughness at Risø’, Quart. J. Roy. Meteorol. Soc. 98, 845–854.
Petersen, E. L., and Taylor, P. A.: 1973, ‘Some Comparison Between Observed Wind Profiles at Risø and Theoretical Prediction for Flow over Inhomogeneous Terrain’, Ibid.Quart. J. Roy. Meteorol. Soc. 99, 329–336.
Peterson, E. W.: 1969, ‘Modification of Mean Flow and Turbulent Energy by a Change in Surface Roughness Under Conditions of Neutral Stability’, Ibid. Quart. J. Roy. Meteorol. Soc. 95, 561–575.
Peterson, E. W.: 1972, ‘Relative Importance of Terms in the Turbulent-Energy and Momentum Equations as Applied to the Problem of a Surface Roughness Change’, J. Atmos. Sci. 29, 1470–1476.
Peterson, E. W.: 1975, ‘The Risø Profiles: A Study of Wind and Temperature Data from the 123 m Tower at Risø, Denmark’, Quart. J. Roy. Meteorol. Soc. 101, 107–117.
Peterson, E. W., Kristensen, L., and Su, C. C.: 1976, ‘Some Observations and Analysis of Wind over Non-Uniform Terrain’, Ibid. Quart. J. Roy. Meteorol. Soc. 102, 857–869.
Peterson, E. W., Jensen, N. O., and Højstrup, J.: 1979, ‘Observations of Downwind Development of Wind Speed and Variance Profiles at Bognaes and Comparison with Theory’, Ibid. Quart. J. Roy. Meteorol. Soc. 105, 521–529.
Rao, K. S., Wyngaard, J. C., and Coté, O. R.: 1974, ‘The Structure of a Two-Dimensional Internal Boundary-Layer over a Sudden Change of Surface Roughness’, J. Atmos. Sci. 31, 738–746.
Taylor, P. A.: 1969, ‘On the Wind and Shear Stress Profiles above a Change in Surface Roughness’, Quart., J. Roy. Meteorol. Soc. 95, 77–91.
Taylor, P. A.: 1977, ‘Some Numerical Studies of Surface Boundary-Layer Flow above Gentle Topography’, Boundary-Layer Meteorol. 11, 439–465.
Taylor, P. A.: 1978, ‘A Numerical Model of Flow above Gentle Topography with Changes in Surface Roughness’, Proc. 9th NATO/CCMS Intnl. Tech. Meeting on Air Pollution Modelling and its Application, Downsview, Canada, August 1978.
Thomson, D. W.: 1980, ‘Risø 78: Mean Profile and Turbulence Measurement at a Shoreline Escarpment’, Risø Report No. 410, Risø National Laboratory, DK-4000 Roskilde, Denmark.
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Peterson, E.W., Taylor, P.A., Højstrup, J. et al. Risø 1978: Further investigations into the effects of local terrain irregularities on tower-measured wind profiles. Boundary-Layer Meteorol 19, 303–313 (1980). https://doi.org/10.1007/BF00120594
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DOI: https://doi.org/10.1007/BF00120594