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How do I calculate brightness temperatures from AIRS L1B data?

April 26, 2017AIRS brightness CALCULATE Data l1b temperatures

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How do I calculate brightness temperatures from AIRS L1B data?

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A. If AIRS L1B channel frequency and radiance are: nu in cm^-1 flux in milliWatts/(m^2 cm^-1 steradian) use constants: h = 6.6260755e-27 erg s k = 1.380658e-16 erg/K c = 2.99792458e+10 cm/s test to ensure that radiance flux is not -9999 (value if invalid) then calculate c1 = h*c/k c2 = 2*h*c*c and the brightness temperature is: BT = (c1*nu)/alog( 1.