Other Names
IR
Definition
Infrared Radiance is the intensity of infrared
radiation. In radiometery, radiance refers to measure of the
intrinsic radiant intensity emitted by a radiator in a given
direction. Radiance is measured in watts per square meter and
steradian.
Infrared Radiation refers to that portion of the
electromagnetic spectrum lying between visible light and
microwaves. The wavelength range is approximately between 720
and 1 mm. In meteorology, this range is often further divided
into the solar infrared and terrestrial radiation, with the
division occurring around 4 m. Dominant absorbers of infrared
radiation include the earth's surface, clouds, water vapor, and
carbon dioxide. By Kirchhoff's law, these are also good
emitters of infrared radiation. Radiance is a radiometric term
for the rate at which radiant energy in a set of directions
confined to a unit solid angle around a particular direction is
transferred across unit area of a surface (real or imaginary)
projected onto this direction.
Applications
| (1)
Algorithm development |
(4)
Cloud typing |
| (2)
Nighttime imaging |
(5)
Land surface temperatures |
| (3)
Target identification |
(6)
Fire detection |
Spectrum
Infrared (720 nm - 1 mm)
GES DISC Datasets
Atmos Composition
