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Parameter Tree:
EARTH SCIENCE > SPECTRAL/ENGINEERING > MICROWAVE > BRIGHTNESS TEMPERATURE
Definition:
The apparent temperature of the surface assuming a surface emissivity of 1.0.
 Setting the emissivity to one is equivalent to assuming the target is
a blackbody, so the brightness temperature is defined as the temperature
a blackbody would be in order to produce the radiance perceived by the
sensor. 
Reference:
MTPE EOS, Data Products Handbook, 1997.
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