Explanation

Long-wave (terrestrial) radiation is the infrared energy emitted by Earth's surface and atmosphere; conduction, convection and radiation are the modes transferring this heat within the earth–atmosphere system. Scattering, by contrast, is the deflection of short-wave incoming solar radiation by atmospheric particles (it makes the sky blue) and is not part of the long-wave emission process. Hence scattering is not a part of long-wave radiation.