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Evaluation and Computation of Potential Evaporation in the Tropics

Published online by Cambridge University Press:  03 October 2008

D. A. Rijks  and
J. T. Walker
D. A. Rijks
Affiliation:
Cotton Research Corporation, Cotton Research Station, Namulonge, P.O. Box 7084, Kampala, Uganda
J. T. Walker
Affiliation:
Cotton Research Corporation, Cotton Research Station, Namulonge, P.O. Box 7084, Kampala, Uganda
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Summary

The problems involved in the estimation of potential evaporation in the tropics are discussed, and available methods for calculating potential evaporation are assessed. A computer programme is described which evaluates Penman's formula, accommodating data from the very wide range of conditions experienced in tropical agriculture. The programme conforms with recent W.M.O. recommendations and is written for computers available in many parts of the world. An important component of the programme is a strict data validation procedure. The output includes daily and mean ten-day estimates of E, using the reflection coefficients for open water and for a crop as well as both calculated and, where available, measured values of radiation.

Type
Research Article
Information
Experimental Agriculture , Volume 4 , Issue 4 , October 1968 , pp. 351 - 357
Copyright
Copyright © Cambridge University Press 1968

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