Location of aerosol single scattering albedo file.
aerosol_ssa_file file
The 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.
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