D Q R Report

DQRID : D060403.1

Start Date	Start Time	End Date	End Time
10/01/2005	0000	04/04/2006	1545

Subject:	SGP/SIRS/E11 - failed ventilator fan
DataStreams:	sgpsirsE11.00, sgpsirs20sE11.a0, sgpsirsE11.b1
Description:	E11 downwelling hemispheric shortwave instrument (Eppley PSP) has shown larger and larger nighttime offsets (from -5 to -10 W/m2) since October. A failed ventilator fan was discovered during PM and replaced on 4/4/2006.
Suggestions:	null
Measurements:	sgpsirsE11.00: (Raw data stream - documentation not supported) more sgpsirs20sE11.a0: Instantaneous Downwelling Hemispheric Shortwave, Pyranometer Thermopile Voltage(inst_global) more sgpsirsE11.b1: Down-welling unshaded pyranometer voltage(down_short_hemisp) Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard Deviation(down_short_hemisp_std) Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Minima(down_short_hemisp_min) Downwelling shortwave hemispheric irradiance, pyranometer, maxima(down_short_hemisp_max) more