Location of aerosol asymmetry parameter file specified by  

aerosol_gg_file file_name

 
The file must have two columns. Column 1 is the altitude in km. Column 2 is the asymmetry parameter of each layer. The asymmetry parameter defined with this option is constant with wavelength. If you require spectral dependence please use aerosol_files. Comments start with #. Empty lines are ignored.