Actual evapotranspirtion estimation in the upper reaches of the Jinghe River basin with the Advection-Aridity model

KEYWORD: Evapotranspiration; Complementary Relationship; AA model; the Jinghe River ABSTRACT: Evapotranspiration is the largest component of water loss from storage and has a ma- jor influence on all hydrological processes. Based on meteological and hydrological in the upper reaches of the Jinghe River basin, Advection-Aridity model was applied to estimate the actual evapo- transpiration from 1966 to 2012. The results showed that the average annual actual evapotranspira- tion is 529.4 mm in the study area, and the variation of actual evapotranspiration was described as four phases. Model calculation results can reflect the regional evapotranspiration loss and provide the basis for the regional soil moisture and green water analysis.