Figure 8. The spectrum of a dry leaf (top) and with incr easing amounts of water added using Hapke radiative transfer model. Top to bottom are: no added water, 10%, 20%, 30%, 40%, 50%, 60%, 70% and 80% added water. Note how the apparent band minimum at 1.73 µm shifts to longer wavelengths with increasing water, and how the structure in the 2.3-µm band becomes approximately a straight line with increasing water. The sequence shows the necessity of accurately removing the water signature to recover the spectral signatures of the other chemical components of the leaf.