Figure 3.

The regressions of Libya desert 4 reflectance measurement of band 3 and 8 in year 2003 using semi-empirical model. The plots are the measurements from both Aqua and Terra R^A⊕αT with optimized ratio against the modeled values k₀ + k₁f₁^A⊕T + k₂f₂^A⊕T. Each symbol presents the average of reflectance measurement of the pixels in one granule. The black diamonds are Aqua measurements and the red squares are Terra measurements adjusted by the optimized ratio factor. The blue lines represent the model fitting.