NSA/GNDRAD/C2 - Incorrect calibration coefficients applied to upwelling(Gndrad)PIR

An insitu test comparing the Gndrad PIR and the Gndrad IRT at the NSA was performed from 6 
Jan 2005 to 12 Jan 2005.  The radiometer mentor requested the Eppley single calibration 
coefficient for the PIR replace the 4 coefficients method developed by NREL.  The Grndrad 
PIR compared closer to the Gndrad IRT during this period. However, the radiometer mentor 
believes the 4 coefficient PIR irradiance measurements remains superior to the single 
coefficient Eppley PIR measurement method.  Further questions should be directed to the 
radiometer instrument mentor.

Disregard this data.

• up_long_hemisp_min
• up_long_hemisp
• pir1_min
• up_long_hemisp_max
• up_long_hemisp_std
• pir1_sd
• pir1_max
• pir1_mean

• Raw data stream - documentation not supported