Sea surface infrared emissivity with surface reflection

Sea surface infrared emissivity is an important parameter in oceanic remote sensing. Early models of sea surface infrared emissivity ignored the surface reflections, leading to an underestimation with measurements over 0.02 in the 8-12 μm wavelength window for large zenith observation angles. This paper takes into account one surface reflection by using an analytical model. Polarization is also considered. The sea surface emissivity is derived with respect to the zenith observation direction and the wind direction, and is then compared with measurements. The results are in good agreement with measurements after taking one surface reflection into account.