Data Quality Reports for Session: 103867 User: chiuj Completed: 01/23/2007

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D061220.34TWP/VCEIL/C3 - standard instrument installedtwpvceil25kC3.b1


DQRID : D061220.34
Start DateStart TimeEnd DateEnd Time
05/18/2006230012/20/20060400
Subject:
TWP/VCEIL/C3 - standard instrument installed
DataStreams:twpvceil25kC3.b1
Description:
A spare ceilometer without the tropics window option was installed. The manufacturer 
recommends the tropics window be used at +/- 25 deg lattitude to prevent direct solar 
radiation into the laser optics when the instrument pointed at zenith. No significant signal 
degradation is apparent during the autumnal equinox but, as a precaution, the unit was 
replaced with the original with a tropics window.
Measurements:twpvceil25kC3.b1:
  • Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
  • Vertical visibility(vertical_visibility)
  • Aerosol volume backscattering coefficient at 355 nm(backscatter)
  • SUM of detected and normalized backscatter(sum_backscatter)
  • Laser temperature(laser_temperature)
  • Millivolts at internal ADC input (0 to 2500)(background_light)

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