4:05 PM - 4:20 PM
[AOS13-09] Effect of irrigation water withdrawals on water and energy balance in the Mekong River Basin using an improved VIC land surface model
Keywords:Irrigation water withdrawals, Runoff, Mekong River
model was generally good, with an overall Nash–Sutcliffe Efficiency of 0.86 for the validation period 1986–1993; (2) the volume-based total Net Irrigation Water Requirement was about 24×109m3/year for the period 1979–2000; (3) including the irrigation water withdrawals from runoff, river channels and dams decreases the total monthly runoff by 32% compared to the “no irrigation” baseline; (4) the period-averaged Bowen Ratio decreased by 6.8% in the dry season as a result of irrigation effects; (5) this significant decrease in Bowen Ratio resulted in a decrease in average surface temperature of 9.3×10−2% and a maximum of 4.8% over irrigated areas during the dry season.