Numerical simulations show that underwater radiances, irradiances, and reflectances are sensitive to the shape of the scattering phase function at intermediate and large scattering angles, although the exact shape of the phase function in the backscatter directions (for a given backscatter fraction) is not critical if errors of the order of 10% are acceptable. We present an algorithm for generating depth- and wavelength-dependent Fournier-Forand phase functions having any desired backscatter fraction. Modeling of a comprehensive data set of measured inherent optical properties and radiometric variables shows that use of phase functions with the correct backscatter fraction and overall shape is crucial to achieve model-data closure.
© 2002 Optical Society of America
Original Manuscript: June 11, 2001
Revised Manuscript: October 18, 2001
Published: February 20, 2002
Curtis D. Mobley, Lydia K. Sundman, and Emmanuel Boss, "Phase function effects on oceanic light fields," Appl. Opt. 41, 1035-1050 (2002)