Data Quality Reports for Session: 107984 User: kvirts Completed: 09/26/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040424.2TWP/MPL/C2 - Sun-shade dropping during daytimetwpmplC2.00, twpmplC2.a1, twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1


DQRID : D040424.2
Start DateStart TimeEnd DateEnd Time
09/15/2003000010/11/20032359
Subject:
TWP/MPL/C2 - Sun-shade dropping during daytime
DataStreams:twpmplC2.00, twpmplC2.a1, twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
Description:
The MPL sunshade began to act erratically on 9/15/2003 dropping frequently throughout day 
and night.  To reduce data loss, the sunshade was restrained from blocking the MPL during 
the night.  Thus, cloud detection during the night is satisfactory, but daytime 
measurements are frequently interspersed with episodes of beam-block.
Measurements:twpmplsmask1clothC2.c1:
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)
  • MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth)
  • Height of Center of Each Range Bin(Heights)

twpmplC2.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

twpmplC2.a1:
  • time(time)
  • Laser Temperature(laser_temp)
  • Repetition rate, or Trigger Frequency of the laser(trigger_freq)
  • Maximum altitude retrieved from multichannel scalar card.(max_altitude)
  • Sum of raw backscatter counts per bin prior to ANY corrections.(total_counts)
  • Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
  • Angle of inclination with respect to horizontal(transceiver_altitude_angle)
  • Background Signal(background_signal)
  • Laser output energy per pulse(energy_monitor)
  • Number of laser shots recorded(shots_summed)
  • Angle of orientation with respect to true geographic north(transceiver_azimuth_angle)
  • Voltage level which operates the A/D card and the detector(voltage_05)
  • Amount of time laser pulse lags behind the scalar trigger(laser_scalar_sync_offset)
  • Time offset of tweaks from base_time(time_offset)
  • Voltage level which operates the thermistor(voltage_10)
  • lon(lon)
  • base time(base_time)
  • lat(lat)
  • Width of range-bins calculated from range_bin_time(range_bin_width)
  • Dummy altitude for Zeb(alt)
  • required to correct raw counts for detector deadtime prior to all other
    corrections.(deadtime_correction)
  • Amount of time the scalar lags behind the sync trigger(scalar_sync_offset)
  • Distance from leading edge of first range bin to the center of each bin .(range_bins)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Preliminary cloud base height(preliminary_cbh)
  • Number of laser pulses summed during measurement interval(shots_sum)
  • Array of heights for the range gates(height)
  • Detector Temperature(detector_temp)
  • Instrument Temperature(instrument_temp)
  • range(range)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • Voltage level which operates the energy monitor(voltage_15)
  • Filter Temperature(filter_temp)
  • effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
  • value represents date of last configuration change as yyyymmdd(property)
  • Amount of time the actual laser pulse lags behind the sync trigger(laser_sync_offset)

twpmplcmask1clothC2.c1:
  • MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)
  • Height of Center of Each Range Bin(Heights)
  • base time(base_time)
  • Time offset of tweaks from base_time(time_offset)


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