Аннотация:The paper considers the effect of the optical properties of aerosols and of geometric factors associated with the illumination of the atmosphere by the Sun on the flux of outgoing radiation and on the albedo of the atmosphere-sea surface system. The calculations were carried out for ground measurements of the atmospheric transmittance acquired during research as part of the programme of the Full Radiation Experiment in 1970 in the region of Shevchenko (Eastern shore of the Caspian Sea).