The reflectance of clear water is generally low. However, the reflectance is maximum at the
blue end of the spectrum and decreases as wavelength increases. Hence, water appears dark-
bluish to the visible eye. Turbid water has some sediment suspension that increases the
reflectance in the red end of the spectrum and would be brownish in appearance. The reflectance
of bare soil generally depends on its composition. In the example shown, the reflectance
increases monotonically with increasing wavelength. Hence, it should appear yellowish-red to
the eye.
Spectral Reflectance Signature 2
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