With LANDSAT satellite images, the heat fluxes were estimated
using SEBAL model and calculated using Arc/Info 9.0 Macro Language (AML) and Compaq VisualFORTRAN6.5 mixed-language programming in this study (Bastiaanssen et al., 1998a,b). Our SEBALbased computer package can be operated in a Microsoft Windows system using the ESRI GRID module as the major data format. To ease the application of the radiance transfer equation, Qin et al.