SGP/SIRS/E5 - Incorrect Calibration Coefficient

When instruments were changed out on 6/25 the UIR (up_long_hemisp measurement) S/N and cal 
coefficient reverted to a previous UIR instrument that was damaged and removed on 
12/28/2007. The UIR S/N should be 31637F3 with corresponding cal K=.2526 instead of applied 
value of K=.2571. 
However, for the PIR longwave instrument in this inverted position (UIR) the K1 term 
contributes approximately 0-7% of the total upwelling longwave signal throughout the day, or 
about 0-30 W/m2.  The cal coefficient is too high by approximately 2%. Thus, the UIR data, 
as is, ranges from 0 to .6 W/m2 too low since this term is always negative.  The 
uncertainty of this instrument is approximately +-10 W/m2 with respect to the WSIG. Reprocessing 
is not recommended.

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• Upwelling longwave hemispheric irradiance, pyrgeometer, maxima(up_long_hemisp_max)
• Instantaneous Upwelling Longwave Hemispheric Irradiance, Pyrgeometer(up_long_netir)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
  Standard Deviation(up_long_hemisp_std)
• Upwelling Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
• 10 meter Upwelling Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)

• Instantaneous Upwelling Pyrgeometer Thermopile Pyrgeometer(inst_up_long_hemisp_tp)
• Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance Pyrgeometer(inst_up_long_dome_resist)
• Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)

• (Raw data stream - documentation not supported)