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Equilibrium Radiance Model Applications and Comparisons to Atmospheric Measurements and Rayleigh Models,
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The equilibrium radiance model, which assumes constancy in the source function along the path of sight, predicts equilibrium radiance as a function of the angle from the sun. Measurements made at all altitudes in the troposphere of cloudless sky radiance in the visible spectrum consistently support this prediction. As a result, sky radiances can be used to obtain 1 vertical space- to-sensor scattering transmittance, 2 equilibrium radiance, and 3 path radiance through the atmosphere and in the troposphere. Comparisons are made of the constant equilibrium radiance model predictions of sky radiance, irradiance, and equilibrium radiance to 1 other models for the Rayleigh atmosphere, and 2 to measurements in the troposphere for thin atmospheres. The agreements are good. Additional keywords Reprints, Atmosphere optics, Optical properties, Radiation transmittance, Equations. Author
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