Empirical equation for the index of refraction of seawater

The authors have determined an empirical equation for the index of refraction of water as a function of temperature, salinity, and wavelength at atmospheric pressure. The experimental data selected by Austin and Halikas (1976) were fitted to power series in the variables. A ten-parameter empirical equation that reproduces the original data to within its experimental errors was obtained.

X. Quan, E. S. Fry, "Empirical equation for the index of refraction of seawater," Appl. Opt.,34, 3477- 3480 (1995).