Location of fluorescence file for wavelength dependent fluorescence emission from the bottom surface.  

fluorescence_file file

 
The file must have two columns. Column 1 is the wavelength in nm, and column 2 the corresponding fluorescence. An arbitrary wavelength grid may be chosen as the fluorescence will be interpolated linearely to the wavelength grid used for the radiation calculation. Comments start with #. Empty lines are ignored. Currently only works with the cdisort solver. Furthermore. if raman is not set, wavelength_grid_file must be specified with the same resolution as the source solar file, and the first value must be the value specified by wavelength. The units of the fluorescence should obviously be the same as for the source solar file.