Comparison of Measured and FAO-56 Modeled Evaporation from Bare Soil
Publication: Journal of Irrigation and Drainage Engineering
Volume 131, Issue 1
Abstract
This paper evaluates how well the FAO-56 style soil water evaporation model simulates measurements of evaporation from bare soil. Seven data sets were identified from the literature and in all but one case, the individuals who took the measurements were contacted and they provided the writers with specific weather and soils data for model input. Missing weather and soils data were obtained from online sources or from the National Climatic Data Center. Simulations for three possible variations of soil data were completed and compared. The measured and the FAO-56 simulated and cumulative evaporation trends and values were similar. Specifically, the average evaporation weighted percent difference between the measured and the simulated cumulative evaporation was between and . This evaluation suggests model accuracy of about with the use of sound weather data and a fairly generalized understanding of soil properties in the location being evaluated.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 131 • Issue 1 • February 2005
Pages: 59 - 72
Copyright
© 2005 ASCE.
History
Received: Jul 22, 2002
Accepted: Aug 11, 2003
Published online: Feb 1, 2005
Published in print: Feb 2005
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