DQRID : D000602.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
04/19/1998000008/22/19980000Suspect
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Subject:
TWP/CEIL/C1 - Ceilometer clock drift
DataStreams:twpceilC1.b1, twpceilC1.00
Description:
During this period the ceilometer was using a software version that
provided time stamps that were based on the ceilometer clock and
not the computer clock that was continually sychronized with GPS.
This lead to times that were erroneous by as much as 2 minutes. For
most applications 2 minutes is an acceptable error, but for some
applications this may be a problem.
Suggestions: 
User beware.
Measurements:twpceilC1.b1:
  • window_contamination
  • status_string
  • second_cbh
  • detection_status
  • sum_backscatter
  • time_offset
  • status_flag
  • first_cbh
  • laser_pulse_energy
  • lon
  • receiver_sensitivity
  • alt_highest_signal
  • measurement_parameters
  • range
  • background_light
  • filename
  • lat
  • tilt_angle
  • base_time
  • alt
  • third_cbh
  • backscatter
  • laser_temperature
  • vertical_visibility
more
twpceilC1.00:
  • Raw data stream - documentation not supported
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