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Average Bowen-ratio methods of calculating evapotranspiration applied to a Douglas fir forest

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Abstract

Daily evapotranspiration from a Douglas fir forest was calculated using Webb's average Bowen-ratio method. Webb's method is generalized to include the effects of the diabatic wind profile. Over a 17-day period characterized by light winds, the modified Webb method agreed with the daily totals of half-hour energy balance calculations to within 1 1/2 % on the average, while Webb's method overestimated by 26 % on the average.

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Authors and Affiliations

  1. Dept. of Soil Science, University of British Columbia, Vancouver, B.C., Canada

    T. A. Black & K. G. McNaughton

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  1. T. A. Black
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  2. K. G. McNaughton
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Black, T.A., McNaughton, K.G. Average Bowen-ratio methods of calculating evapotranspiration applied to a Douglas fir forest. Boundary-Layer Meteorol 2, 466–475 (1972). https://doi.org/10.1007/BF00821549

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  • DOI: https://doi.org/10.1007/BF00821549

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