We have developed a Monte Carlo program that is capable of calculating both the scalar and the Stokes vector radiances in an atmosphere–ocean system in a single computer run. The correlated sampling technique is used to compute radiance distributions for both the scalar and the Stokes vector formulations simultaneously, thus permitting a direct comparison of the errors induced. We show the effect of the volume-scattering phase function on the errors in radiance calculations when one neglects polarization effects. The model used in this study assumes a conservative Rayleigh-scattering atmosphere above a flat ocean. Within the ocean, the volume-scattering function (the first element in the Mueller matrix) is varied according to both a Henyey–Greenstein phase function, with asymmetry factors G = 0.0, 0.5, and 0.9, and also to a Rayleigh-scattering phase function. The remainder of the reduced Mueller matrix for the ocean is taken to be that for Rayleigh scattering, which is consistent with ocean water measurements.
© 1993 Optical Society of America
Original Manuscript: May 18, 1992
Published: August 20, 1993
Charles N. Adams and George W. Kattawar, "Effect of volume-scattering function on the errors induced when polarization is neglected in radiance calculations in an atmosphere–ocean system," Appl. Opt. 32, 4610-4617 (1993)