The radiation emitted in the spectral wavelength greater than 4 micrometers corresponding to the radiation emitted from the Earth and atmosphere. It is sometimes referred to as terrestrial radiation or infrared radiation, although somewhat imprecisely.
radiation at wavelengths greater than 3 mm, typically originating from sources at terrestrial temperatures (e.g., ground and other terrestrial objects) [W/m2] langwellige Strahlung (Wärmestrahlung)
Heat emitted by the Earth. It has lower energy and thus a longer wavelength than the incoming sunlight. See shortwave radiation.
A reference to radiation emitted by Earth. Wavelengths are roughly 20 times longer than those emitted by the sun.
in meteorology, radiation having a wavelength greater than that of visible light
Infrared radiation, radiation with wavelengths greater than those of the visible light (at about 8000 Angstroms or 800 nanometers(nm)) but shorter than those of microwaves (at about 1,000,000 Angstroms or 800,000 nm). Longwave radiation is associated with heat energy.
A term most often used to describe the IR energy emitted by Earth and the atmosphere. Terrestrial radiation.