Contribution to the overall spectral brightness of the successive scattering events that the simulated photons undergo in the atmosphere at λ = 500 nm (purple lines), 600 nm (blue lines), 724 nm (yellow lines), and 884 nm (red lines). At each wavelength, the maximum photon contribution to the overall brightness of the spectrum is normalized to 1. Each column corresponds to a phase angle: 37° (left), α = 85° (middle), and α = 123° (right). Each row corresponds to a cloud scenario, as indicated in the labels. Also included are the thick-cloud-scenario retrievals forvalues of r_eff = 0.10 and 2.0 μm (see Sect. 5.2).