481 
Figure 1. Examples of scatter plot of measured emissivities of fully grown vegetation at 
3.1 and 10.2 GHz (6=50). Clusters for wheat, potatoes, com and sugar beets are shown 
(from Wegmiiller. 1993). 
Single Scattering Albedo Optical Depth 
Figure 2. Time series of derived optical depths (T) and single scattering albedo (T) using 
SMMR observations at 37GHz. (from Van de Griend and Owe, 1993).