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Calculation of evaporation from measurements of soil water and the soil water characteristic

Authors: Stammers, W.N., Igwe, O.C. And H.R. Whiteley
Description: The determination of evaporation from soil-water and precipitation information is a common practice in hydrologic investigations. For computations of this type a decision must be made concerning the soil-water flux at the lower boundary of the control volume employed. Three alternatives may be considered: (i) the soil-water flux at the lower boundary may be ignored (ii) it may be estimated using laboratory-determined soil-water capillary conductivity and soil-water capillary potential functions or (Hi) under appropriate conditions a time-dependent lower boundary at which the soil-water flux is zero may be used. This paper is concerned with the development of a model for evaporation computation using the third alternative. The developments that follow are based upon a graduate thesis (4).
Keywords: calculation of evaporation from measurements of soil water and the soil water characteristic
Citation: Stammers, W.N., Igwe, O.C. and H.R. Whiteley 1973. CALCULATION OF EVAPORATION FROM MEASUREMENTS OF SOIL WATER AND THE SOIL WATER CHARACTERISTIC. Canadian Agricultural Engineering 15(1):2-5.
Volume: 15
Issue: 1
Start page number: 2
End page number: 5
Date: 1973
Coverage: Canada
Located in: Volume 15 (1973)

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