IUPAC definition : The redirection of a light beam due to interactions with molecules (Rayleigh and Raman
scattering) and aerosols (Mie scattering). Scattered light received at any point in
the atmosphere (sometimes called i sky /i radiation) is a very important component
of the total radiation received from the sun; it is dependent on the solar zenith
angle, elevation aerosol concentration etc.;
The redirection of a light beam due to interactions with molecules (Rayleigh and Raman
scattering) and aerosols (Mie scattering). Scattered light received at any point in
the atmosphere (sometimes called i sky /i radiation) is a very important component
of the total radiation received from the sun; it is dependent on the solar zenith
angle, elevation aerosol concentration etc.
Currated CISMeF NLP mapping