DQRID : D061220.34
Start DateStart TimeEnd DateEnd Time Data Quality Metric
05/18/2006230012/20/20060400Does not affect quality
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Subject:
TWP/CEIL/C3 - standard instrument installed
DataStreams:twpceilC3.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.
Suggestions: 
Measurements:twpceilC3.b1:
  • sum_backscatter
  • laser_pulse_energy
  • laser_temperature
  • background_light
  • backscatter
  • vertical_visibility
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