D Q R Report

DQRID : D170210.3

Start Date	Start Time	End Date	End Time	Data Quality Metric
03/12/2002	0738	04/02/2002	0554	Incorrect

Subject:	TWP/SKYRAD/C3 - Calibration error
DataStreams:	twpskyrad60sC3.b1, twpskyradC3.00, twpskyrad60sC3.a1
Description:	The night time Total Downwelling SW and Diffuse SW data are significantly above zero (at least 50 w/m^2). It appears to be a systematic shift, indicating possible calibration error.
Suggestions:	Do not use data, or contact mentor before using data.
Measurements:	twpskyradC3.00: Raw data stream - documentation not supported more twpskyrad60sC3.b1: short_direct_normal_min short_direct_normal_std down_short_diffuse_hemisp_std down_short_diffuse_hemisp_max down_short_diffuse_hemisp short_direct_normal down_short_hemisp short_direct_normal_max down_short_hemisp_min down_short_hemisp_max down_short_hemisp_std down_short_diffuse_hemisp_min more twpskyrad60sC3.a1: down_short_hemisp down_short_hemisp_min short_direct_normal_min short_direct_normal_max down_short_hemisp_std short_direct_normal_std down_short_hemisp_max down_short_diffuse_hemisp_max down_short_diffuse_hemisp_std down_short_diffuse_hemisp short_direct_normal down_short_diffuse_hemisp_min more