Help for ASTERTEMP

PURPOSE:

   ASTERTEMP is a program that accepts as input the five ASTER TIR channels
of radiance (Channels 10-14), and calculates the corresponding kinetic 
temperatures for each channel at each pixel.


OPERATION:

   ASTERTEMP requires as input a 5 channel ASTER TIR image dataset of
radiance and the radiance-to-temperature lookup table.  The program accepts
as parameter input the spectral emissivity and the downwelling sky irradiance
for each channel.  First, the input radiance is adjusted via the following 
formula:

      Rad(emitted) = Rad(upwelling) - (1-emissivity)*Irrad(downwelling)/pi

The emitted radiance is converted to the corresponding blackbody radiance
by dividing by the spectral emissivity, and the supplied lookup table is
used to convert the blackbody radiance to kinetic temperature.  In the
default mode, linear interpolation is used between lookup table entries.
If the keyword NO is supplied, no interpolation is performed, and the 
closest table entry is used.


WRITTEN BY:  Ron Alley         June 11,  2000

COGNIZANT PROGRAMMER:  Ron Alley

REVISION: 1.1   14 June 2000