DQRID : D020227.8
Start DateStart TimeEnd DateEnd Time
08/10/2001000010/29/20012033
more
Subject:
SGP/MPL/C1 - Data missing due to hardware failures
DataStreams:sgpmplC1.a0, sgpmplcbh1scottC1.c0, sgpmplcbh1scottC1.c1, sgpmplC1.00, sgpmplnor1campC1.c1,
sgpmplC1.a1
Description:
The MPL instrument was out of service during the time
range specified due to hardware failures. Data during
this period are missing and unrecoverable.
Suggestions: 
Measurements:sgpmplC1.a1:
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • Voltage level which operates the energy monitor(voltage_15)
  • Detector Temperature(detector_temp)
  • Voltage level which operates the thermistor(voltage_10)
  • Laser Temperature(laser_temp)
  • Height(height)
  • Filter Temperature(filter_temp)
  • Repetition rate, or Trigger Frequency of the laser(trigger_freq)
  • Laser output energy per pulse(energy_monitor)
  • Background signal(background_signal)
  • Amount of time laser pulse lags behind the scalar trigger(laser_scalar_sync_offset)
  • Deadtime correction factor(deadtime_correction)
  • Width of range-bins calculated from range_bin_time(range_bin_width)
  • Sum of raw backscatter counts per bin prior to ANY corrections.(total_counts)
  • 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)
  • Angle of inclination with respect to horizontal(transceiver_altitude_angle)
  • Time offset from base_time(time_offset)
  • Maximum altitude retrieved from multichannel scalar card.(max_altitude)
  • Preliminary cloud base height above ground level(preliminary_cbh)
  • base time in epoch(base_time)
  • Number of laser pulses summed during measurement interval(shots_sum)
  • Subtract from range_bins to yield range(range_offset)
  • Aerosol volume backscattering coefficient at 355 nm(backscatter)
  • Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
  • lon(lon)
  • Number of lidar pulses summed(shots_summed)
  • Voltage level which operates the A/D card and the detector(voltage_05)
  • Amount of time the actual laser pulse lags behind the sync trigger(laser_sync_offset)
  • North Latitude(lat)
  • Angle of orientation with respect to true geographic north(transceiver_azimuth_angle)
  • -180.0 - +180.0(alt)
  • value represents earliest applicable date as yyyymmdd(property)
  • Distance to the center of the corresponding range bin(range)
  • time_in_seconds_since_volume_start(time)
  • Instrument Temperature(instrument_temp)
more
sgpmplC1.00:
  • (Raw data stream - documentation not supported)
more
sgpmplnor1campC1.c1:
  • Number of lidar pulses summed(shots_summed)
  • Flag indicating whether the beam was extinguished at indicated cloud top(cloud_top_attenuation_flag)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • Laser output energy per pulse(energy_monitor)
  • -180.0 - +180.0(alt)
  • Detector Temperature(detector_temp)
  • Altitude of cloud top used in retrieval(cloud_top_height)
  • North Latitude(lat)
  • Laser Temperature(laser_temp)
  • lon(lon)
  • Aerosol volume backscattering coefficient at 355 nm(backscatter)
  • base time in epoch(base_time)
  • The update time of the historical baseline used for the cloud boundary
    determination of this sample(baseline_update_time)
  • Time offset from base_time(time_offset)
  • Instrument Temperature(instrument_temp)
  • Background signal(background_signal)
  • Cloud base height (for first cloud above height threshold)(cloud_base_height)
  • Relative random error in backscatter profiles(random_error)
  • Cloud mask(cloud_mask_2)
  • Cloud mask(cloud_mask_1)
  • Height(height)
more
sgpmplC1.a0:
  • Height(height)
  • Filter Temperature(filter_temp)
  • Number of lidar pulses summed(shots_summed)
  • Binary data quality flag(cloud_base_height_dq_flag)
  • Time offset from base_time(time_offset)
  • Instrument electronics temperature(instrument_temperature)
  • Cloud base height (for first cloud above height threshold)(cloud_base_height)
  • Voltage level which operates the A/D card and the detector(voltage_05)
  • Aerosol volume backscattering coefficient at 355 nm(backscatter)
  • Laser output energy per pulse(energy_monitor)
  • Background signal(background_signal)
  • Voltage level which operates the energy monitor(voltage_15)
  • Voltage level which operates the thermistor(voltage_10)
  • Instrument Temperature(instrument_temp)
  • North Latitude(lat)
  • -180.0 - +180.0(alt)
  • base time in epoch(base_time)
  • lon(lon)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • Detector Temperature(detector_temp)
  • Laser Temperature(laser_temp)
more
sgpmplcbh1scottC1.c0:
  • (Raw data stream - documentation not supported)
more
sgpmplcbh1scottC1.c1:
  • North Latitude(lat)
  • -180.0 - +180.0(alt)
  • Time offset from base_time(time_offset)
  • Average cloud base height used in the retrieval(cbh)
  • base time in epoch(base_time)
  • lon(lon)
more

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