The paper aimed at deriving Kc
(AET/PET) for multiple vegetation types and understanding its environmental controls by analyzing the accumulated global eddy flux (FLUXNET) data. We established multiple linear equations for different land covers and seasons to model the dynamics of Kc
as function of LAI, site latitude, and precipitation. Our study extended the applications of the traditional Kc
method for estimating crop water use to estimating AET rates for natural ecosystems.