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The Effect of Orography on Evaporation

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Abstract

The effect of orography on the spatial variability of surface evaporation is studied numerically for two hill heights and two prescribed forms of surface resistance. A numerical model of the planetary boundary layer carrying scalars of temperature and specific humidity, and with a surface energy balance scheme, is employed. It is found that the difference in mean evaporation between model runs with hills and analogous runs for flat terrain may be explained primarily by an increase in surface area and adiabatic cooling at the hill surface.

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Authors and Affiliations

  1. Institute of Hydrology, Wallingford, OX10 8BB, U.K

    C. Huntingford & E. M. Blyth

  2. Meteorological Office, Bracknell, RG12 2SZ, U.K

    N. Wood, F. E. Hewer & A. Grant

Authors
  1. C. Huntingford
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  2. E. M. Blyth
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  3. N. Wood
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  4. F. E. Hewer
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  5. A. Grant
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Huntingford, C., Blyth, E.M., Wood, N. et al. The Effect of Orography on Evaporation. Boundary-Layer Meteorology 86, 487–504 (1998). https://doi.org/10.1023/A:1000795206459

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  • DOI: https://doi.org/10.1023/A:1000795206459

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