| Variable Name and Aliases | Default Value | Arguments, Unit, Description |
| surface.conf |
| dir_base|dir_base_directory | | base directory in which all subordinated files can be found |
| b_use_relief_data|b_relief | no | use topograhic surface altitude data? |
| fn_relief_data_file|fn_relief | file | file which holds the ground relief data... |
| b_specular_reflection_at_surface|b_Fresnel_reflection | no | Fresnel reflection at the surface? |
| fn_refractive_index | file | [nm re im] refractive index table for surface |
| wind_speed | 0.000000 | [m/s] wind speed at the sea surface |
| wind_direction|wind_azimuth | 0.000000 | [degree] wind direction relative to North |
| b_sea_surface | no | use Cox & Munks 1954 sea surface slope PDF for simulation of specular reflection? |
| crosswind_resolution | 100 | sea surface crosswind axis slope map resolution |
| upwind_resolution | 100 | sea surface upwind axis slope map resolution |
| ground_albedo|albedo | 0.000000 | homogeneously grey surface albedo value |
| b_use_albedo_map | no | use detailed albedo map? |
| b_use_reflectance_spectra | no | use reflectance spectra? |
| fn_ground_reflectance_spectra|fn_spectral_albedo_data | file | file with data table of reflectance spectra |
| fn_ground_pixel_map | file | ground pixel map instead of albedo |
| b_use_specific_albedo_map_grid | no | use specific albedo map grid? |
| b_use_equidistant_albedo_map_grid | no | use equidistant albedo map grid? |
| AlbedoMapXA | 0.000000 | albedo map XA |
| AlbedoMapXB | 0.000000 | albedo map XB |
| AlbedoMapYA | 0.000000 | albedo map YA |
| AlbedoMapYB | 0.000000 | albedo map YB |
| AlbedoMapDeltaX | 0.000000 | x size of albedo map tile |
| AlbedoMapDeltaY | 0.000000 | y size of albedo map tile |
| fn_albedo_map_x_grid | file | x grid file for albedo map |
| fn_albedo_map_y_grid | file | y grid file for albedo map |