aerosol_ssa_file fileThe file must have two columns. Column 1 is the altitude in km. The altitude grid must be exactly equal to the altitude grid specified in the file atmosphere_file. Column 2 is the single scattering albedo of each layer. The single scattering albedo defined with this option is constant with wavelength. If you require spectral dependence please use aerosol_files. Comments start with #. Empty lines are ignored.