Figure 1
From: A new simple concept for ocean colour remote sensing using parallel polarisation radiance

The upward total radiance and PPR at the TOA simulated by PCOART.
The radiances were observed in the specular plane corresponding to the solar incident direction with units of mW/(cm2·μm·sr). The solar zenith angles were taken from 0° to 70° with a step of 1°. It should be noted that the discrete peaks (sun glint) were caused by the discrete solar zenith angles with a step of 1° and the actual sun glint should be a continuous curve. (a) The total radiance at 443 nm, (b) PPR at 443 nm, (c) total radiance at 670 nm, (d) PPR at 670 nm.