thermal_bands__file fileThe following three columns are expected: center (or reference) wavelength, lower wavelength limit, upper wavelength limit [nm]. thermal_bands_file defines the wavelength grid for the radiative transfer calculation. The RTE solver is called for each of the wavelengths in the first column. The atmospheric (scattering, absorption, etc) properties are also evaluated at these wavelengths. For thermal radiation calculations, the Planck function is integrated over the wavelength bands defined in the second and third columns. The result will therefore be a band-integrated irradiance which does only make sense when the solar_file grid equals the thermal_bands_file grid.