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Infrared Radiance

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

Quick Search for 'Infrared Radiance' with Mirador
Click on the corresponding 'Data access' links in the table below to access products containing specific parameter.

Parameter Units Platform /Instrument Data Products
Begin Date End Date Data Access Doc
Infrared Radiance   TRMM/VIRS 1997-12-07 Current TRMM_1A01 Y
TRMM_1B01 Y
Aqua/AIRS 2002-08-30 Current AIRIBRAD Y
AIRVBRAD Y
AIRIBQAP Y
AIRVBQAP Y
AIRH2CCF Y
AIRI2CCF Y
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Last updated: Dec 02, 2011 02:21 PM ET
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