D Q R Report

DQRID : D120417.15

Start Date	Start Time	End Date	End Time
01/19/1996	1926	04/22/1996	1630

Subject:	SGP/QCRAD/E12 - downwelling pyranometer data incorrect
DataStreams:	sgpqcrad1longE12.s2, sgpqcrad1longE12.c2, sgpqcrad1longE12.c1, sgpqcrad1longE12.s1
Description:	Because of a bad "preamp cable", the data from the downwelling pyranometer at site E12 would generally not fall below 400 W/m^2 even at night. We don't know exactly when this problem begins, so beware of all downwelling pyranometer data taken before 960422. This will also impact the best estimate GSW data when it uses the GSW pyranometer data. Described in instrument DQR D960501.1
Suggestions:	null
Measurements:	sgpqcrad1longE12.s2: Quality check results on field: Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_hemisp) more sgpqcrad1longE12.c2: Quality check results on field: Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_hemisp) Down-welling unshaded pyranometer voltage(down_short_hemisp) more sgpqcrad1longE12.s1: Quality check results on field: Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_hemisp) more sgpqcrad1longE12.c1: Quality check results on field: Best Estimate Global Downwelling Shortwave Hemispheric Irradiance(BestEstimate_down_short_hemisp) Down-welling unshaded pyranometer voltage(down_short_hemisp) more