SGP/BRS/C1 - Reprocess: Incorrect Calibration Coefficients

Lightening strike on or near 6/2/2004 took the BRS NIP(31747E6) out of service, on or near 
6/15 the NIP was replaced and the datalogger program was changed to reflect the new 
NIP(31343E6). On 8/5/2004 the DIR (Downwelling longwave) instrument was changed out and a new 
program was loaded to reflect a new DIR.  The new program contained the original 
installed shortwave instrument calibration coefficients including NIP 31747E6. Thus from 8/5 to 
when the shortwave instruments were changed out on 12/3 the wrong s/n and calibration 
factor (i.e. 31747E6) was applied to the actual NIP(31343E6)installed at BRS C1.

Cal factors at time of installation for the NIPS:
31747E6 120.41
31343E6 119.22
NIP(cor)=(NIP (values during DQR period)/120.41)*119.22
This is a 1% difference , less than the uncertainty of the instruments.

• Instantaneous direct normal shortwave irradiance, pyrheliometer thermopile
  voltage(inst_direct_normal)

• (Raw data stream - documentation not supported)

• Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
• Shortwave direct normal irradiance, pyrheliometer, minima(short_direct_normal_min)
• Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
• Shortwave direct normal irradiance, pyrheliometer(short_direct_normal)