Decision support system for estimation of potential evapo-transpiration in Pangani Basin

A decision support system for estimation water loss through evaporation was developed for Pangani basin. The model was envisaged to estimate reference potential evapotranspiratiom (PET) at ungauged locations, estimate average catchment PET and can be used to filling missing data for hydrological and...

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Bibliographic Details
Published in:Physics and chemistry of the earth. Parts A/B/C 2003, Vol.28 (20), p.927-934
Main Authors: Moges, S.A, Katambara, Z, Bashar, K
Format: Article
Language:English
Subjects:
Decision support system
E-methods
PET
Stochastic model
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Summary:A decision support system for estimation water loss through evaporation was developed for Pangani basin. The model was envisaged to estimate reference potential evapotranspiratiom (PET) at ungauged locations, estimate average catchment PET and can be used to filling missing data for hydrological and agricultural planning purposes. It was designed to make use of the existing limited data in estimation of PET by using anyone of the available evaporation methods (E-methods). Six evaporation methods are imbedded in the model––Penman, Penman–Montieth, Kimberly–Penman (combination method), Hargreaves (temperature based), Priestly and Taylor and Turc (radiation based). Stochastic time series model was used to transfer information from gauged to ungauged location. The model was effectively used to estimate catchment average PET for HEC-HMS model and filling missing data.
ISSN:1474-7065
1873-5193
DOI:10.1016/j.pce.2003.08.038