DQRID : D040506.1
Start DateStart TimeEnd DateEnd Time
TWP/VCEIL/C3 - Data collection problem
DataStreams:twpvceil25kC3.b1, twpvceil25kC3.00
There was a bad connection between the ceilometer and the instrument computer which 
resulted in a small amount of data loss on 8 days during the effected period.  The data that 
were collected are not effected by the problem.  On April 11, 34% of the data was lost and 
on April 1, 4% was lost.  On the remaining 6 days, May 1-6, the amount of data lost was 
less than 2%/day.
  • Vertical visibility(vertical_visibility)
  • Third cloud base height(third_cbh)
  • Laser temperature(laser_temperature)
  • 6 character string describing instrument measurement parameters(measurement_parameters)
  • -180.0 - +180.0(alt)
  • Detection status.(detection_status)
  • Flag indicating aeri retrieval status(status_flag)
  • lon(lon)
  • Warning, alarm, and internal status information(status_string)
  • Millivolts at internal ADC input (0 to 2500)(background_light)
  • Lowest cloud base height detected(first_cbh)
  • Altitude of highest signal(alt_highest_signal)
  • Aerosol volume backscattering coefficient at 355 nm(backscatter)
  • Degrees from vertical (-15 to +90)(tilt_angle)
  • Second lowest cloud base height(second_cbh)
  • Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
  • base time in epoch(base_time)
  • Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
  • Window contamination(window_contamination)
  • Sum of detected and normalized backscatter(sum_backscatter)
  • Time offset from base_time(time_offset)
  • Distance to the center of the corresponding range bin(range)
  • North Latitude(lat)
  • (Raw data stream - documentation not supported)

Close this window