668 
o Doubling-Adding; • Monte Carlo 
O Doubling-Adding; • Monte Carlo 
Viewing Angle (degree) 
Fig. 1: Reflectance and polarization rate in the principal plane computed with the 
Monte Carlo code (solid circles) and with the doubling-adding code of Takashima 
(1984) (open circles). Sun zenith angle is 30°, wind speed is 5 ms"^, and wavelength 
is 450 nm. Aerosols are of "water soluble" type; they are located below 800 mb and 
have an optical thickness of 0.25. The water body is Lambertian, with a reflectance of 
2 %.