comnum.fog_attenuation_db_per_km#

comnum.fog_attenuation_db_per_km(visibility_km, wavelength_nm)#

The attenuation (dB/km) of haze and fog for a visibility visibility_km (Kim et al. 2001).

Parameters:

  • visibility_km (float) – the visibility (km).

  • wavelength_nm (float) – the wavelength (nm).

Returns:

the attenuation (dB/km).

Return type:

float

Raises:

ValueError – for an invalid parameter (the message names it).