Variability of Fresnel surface emissivity of Persian Gulf water in a nadir-viewing direction at C- band

In this study, the variability of vertical and horizontal polarizations of Fresnel emissivity over the Persian Gulf water at 5 GHz in a nadir-viewing direction are investigated by using Fresnel's equations. Data sets used to compute Fresnel reflection coefficients were provided from our previous studies on hydrodynamic and electromagnetic properties of Persian Gulf water. The calculations indicated that spatial variability of Fresnel emissivity for both vertical and horizontal polarizations were relatively large compared to its temporal variability. The annual domain-averaged mean for vertical emissivity at the C- band was 0.3914, whereas for the horizontal polarization of the emissivity, it was 0.3645 in a nadir-viewing direction.

Source: Journal of Radiation Research and Applied Sciences - November 6, 2015 Category: Physics Source Type: research