Regional evaporation estimates in the eastern monsoon region of China: Assessment of a nonlinear formulation of the complementary principle

The performance of a nonlinear formulation of the complementary principle for evaporation estimation was investigated in 241 catchments with different climate conditions in the eastern monsoon region of China. Evaporation ( Ea) calculated by the water balance equation was used as the reference. Ea e...

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Bibliographic Details
Published in:Water resources research 2016-12, Vol.52 (12), p.9511-9521
Main Authors: Liu, Xiaomang, Liu, Changming, Brutsaert, Wilfried
Format: Article
Language:English
Subjects:
Analogs
Aridity
Aridity index
Calibration
Catchment area
Catchments
Climate
Climatic conditions
Coastal zone
complementary principle
Drying
Estimates
Evaporation
Evaporation estimation
Humid areas
Mathematical analysis
Mathematical models
Meteorological data
Methods
Monsoons
Nonlinearity
Regional analysis
Water
Water balance
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Summary:The performance of a nonlinear formulation of the complementary principle for evaporation estimation was investigated in 241 catchments with different climate conditions in the eastern monsoon region of China. Evaporation ( Ea) calculated by the water balance equation was used as the reference. Ea estimated by the calibrated nonlinear formulation was generally in good agreement with the water balance results, especially in relatively dry catchments. The single parameter in the nonlinear formulation, namely αe as a weak analog of the alpha parameter of Priestley and Taylor (), tended to exhibit larger values in warmer and humid near‐coastal areas, but smaller values in colder, drier environments inland, with a significant dependency on the aridity index (AI). The nonlinear formulation combined with the equation relating the one parameter and AI provides a promising method to estimate regional Ea with standard and routinely measured meteorological data. Key Points Ea estimated by the calibrated nonlinear formulation was in good agreement with the water balance results The single parameter in the nonlinear formulation was shown to depend significantly on the aridity index (AI) The nonlinear formulation combined with the equation relating the one parameter and AI provides a promising method to estimate Ea
ISSN:0043-1397
1944-7973
DOI:10.1002/2016WR019340