Data Quality Reports for Session: 107781 User: kvirts Completed: 09/14/2007

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D000608.11TWP/C2/MPL DetectortwpmplC2.00, twpmplC2.a1, twpmplcmask1clothC2.c1, twpmplnor1campC2.c1,
twpmplsmask1clothC2.c1
D000615.2TWP/C2/MPL Data Gaptwpmplcmask1clothC2.c1, twpmplnor1campC2.c1, twpmplsmask1clothC2.c1
D000615.3TWP/C2/MPL Data gaptwpmplcmask1clothC2.c1, twpmplnor1campC2.c1, twpmplsmask1clothC2.c1
D000615.4TWP/C2/MPL Data gaptwpmplcmask1clothC2.c1, twpmplnor1campC2.c1, twpmplsmask1clothC2.c1
D000615.5TWP/C2/MPL Data gaptwpmplcmask1clothC2.c1, twpmplnor1campC2.c1, twpmplsmask1clothC2.c1
D020613.6TWP/C2 Installationtwpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
D030528.1TWP/MPL/C2 - Power outage in I-Van resulted in Missing DatatwpmplC2.00, twpmplC2.a1, twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
D030922.1TWP/MPL/C2 - laser diode failuretwpmplC2.00, twpmplC2.a1, twpmplcbh1scottC2.c0, twpmplcbh1scottC2.c1,
twpmplcmask1clothC2.c1, twpmplnor1campC2.c1, twpmplsmask1clothC2.c1
D040424.2TWP/MPL/C2 - Sun-shade dropping during daytimetwpmplC2.00, twpmplC2.a1, twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
D040424.3TWP/MPL/C1 - SunShade timing problemtwpmplC1.00, twpmplC1.a1, twpmplcmask1clothC1.c1, twpmplsmask1clothC1.c1
D040424.4TWP/MPL/C1 - SP laser diode supply failedtwpmplC1.00, twpmplC1.a1, twpmplcmask1clothC1.c1, twpmplsmask1clothC1.c1


DQRID : D000608.11
Start DateStart TimeEnd DateEnd Time
02/03/1999000004/20/19991200
Subject:
TWP/C2/MPL Detector
DataStreams:twpmplC2.00, twpmplC2.a1, twpmplcmask1clothC2.c1, twpmplnor1campC2.c1,
twpmplsmask1clothC2.c1
Description:
The MPL detector failed and was shut down.
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)
twpmplnor1campC2.c1:
  • Instrument Temperature(instrument_temp)
  • Laser Temperature(laser_temp)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • Cloud base height, measured by MPL(cloud_base_height)
  • base time(base_time)
  • Flag indicating whether the beam was extinguished at indicated cloud top(cloud_top_attenuation_flag)
  • Relative random error in backscatter profiles(random_error)
  • Detector Temperature(detector_temp)
  • lon(lon)
  • Cloud mask(cloud_mask_1)
  • Array of heights for the range gates(height)
  • lat(lat)
  • Background Signal(background_signal)
  • Cloud mask(cloud_mask_2)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Dummy altitude for Zeb(alt)
  • Laser output energy per pulse(energy_monitor)
  • Time offset of tweaks from base_time(time_offset)
  • Number of laser shots recorded(shots_summed)
  • The update time of the historical baseline used for the cloud boundary
    determination of this sample(baseline_update_time)
  • cloud top height(cloud_top_height)
twpmplC2.a1:
  • time(time)
  • Repetition rate, or Trigger Frequency of the laser(trigger_freq)
  • Maximum altitude retrieved from multichannel scalar card.(max_altitude)
  • Angle of inclination with respect to horizontal(transceiver_altitude_angle)
  • Laser output energy per pulse(energy_monitor)
  • Amount of time laser pulse lags behind the scalar trigger(laser_scalar_sync_offset)
  • Voltage level which operates the thermistor(voltage_10)
  • Width of range-bins calculated from range_bin_time(range_bin_width)
  • required to correct raw counts for detector deadtime prior to all other
    corrections.(deadtime_correction)
  • Distance from leading edge of first range bin to the center of each bin .(range_bins)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Number of laser pulses summed during measurement interval(shots_sum)
  • Preliminary cloud base height(preliminary_cbh)
  • Detector Temperature(detector_temp)
  • Instrument Temperature(instrument_temp)
  • Filter Temperature(filter_temp)
  • Laser Temperature(laser_temp)
  • 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)
  • Background Signal(background_signal)
  • 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)
  • Time offset of tweaks from base_time(time_offset)
  • lon(lon)
  • base time(base_time)
  • lat(lat)
  • Dummy altitude for Zeb(alt)
  • Amount of time the scalar lags behind the sync trigger(scalar_sync_offset)
  • Array of heights for the range gates(height)
  • range(range)
  • Voltage level which operates the energy monitor(voltage_15)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • 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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DQRID : D000615.2
Start DateStart TimeEnd DateEnd Time
11/20/1998204811/21/19980318
Subject:
TWP/C2/MPL Data Gap
DataStreams:twpmplcmask1clothC2.c1, twpmplnor1campC2.c1, twpmplsmask1clothC2.c1
Description:
Data missing
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)
twpmplnor1campC2.c1:
  • Instrument Temperature(instrument_temp)
  • Laser Temperature(laser_temp)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • Cloud base height, measured by MPL(cloud_base_height)
  • Background Signal(background_signal)
  • Cloud mask(cloud_mask_2)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • base time(base_time)
  • Flag indicating whether the beam was extinguished at indicated cloud top(cloud_top_attenuation_flag)
  • Dummy altitude for Zeb(alt)
  • Laser output energy per pulse(energy_monitor)
  • Time offset of tweaks from base_time(time_offset)
  • Relative random error in backscatter profiles(random_error)
  • Number of laser shots recorded(shots_summed)
  • Detector Temperature(detector_temp)
  • The update time of the historical baseline used for the cloud boundary
    determination of this sample(baseline_update_time)
  • lon(lon)
  • Cloud mask(cloud_mask_1)
  • cloud top height(cloud_top_height)
  • Array of heights for the range gates(height)
  • lat(lat)
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)

Back To Table of Contents

DQRID : D000615.3
Start DateStart TimeEnd DateEnd Time
11/21/1998032011/21/19980532
Subject:
TWP/C2/MPL Data gap
DataStreams:twpmplcmask1clothC2.c1, twpmplnor1campC2.c1, twpmplsmask1clothC2.c1
Description:
Data missing
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)
twpmplnor1campC2.c1:
  • Instrument Temperature(instrument_temp)
  • Laser Temperature(laser_temp)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • Cloud base height, measured by MPL(cloud_base_height)
  • Background Signal(background_signal)
  • Cloud mask(cloud_mask_2)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • base time(base_time)
  • Flag indicating whether the beam was extinguished at indicated cloud top(cloud_top_attenuation_flag)
  • Dummy altitude for Zeb(alt)
  • Laser output energy per pulse(energy_monitor)
  • Time offset of tweaks from base_time(time_offset)
  • Relative random error in backscatter profiles(random_error)
  • Number of laser shots recorded(shots_summed)
  • Detector Temperature(detector_temp)
  • The update time of the historical baseline used for the cloud boundary
    determination of this sample(baseline_update_time)
  • lon(lon)
  • Cloud mask(cloud_mask_1)
  • cloud top height(cloud_top_height)
  • Array of heights for the range gates(height)
  • lat(lat)
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)

Back To Table of Contents

DQRID : D000615.4
Start DateStart TimeEnd DateEnd Time
11/23/1998021811/23/19980512
Subject:
TWP/C2/MPL Data gap
DataStreams:twpmplcmask1clothC2.c1, twpmplnor1campC2.c1, twpmplsmask1clothC2.c1
Description:
Data missing
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)
twpmplnor1campC2.c1:
  • Instrument Temperature(instrument_temp)
  • Laser Temperature(laser_temp)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • Cloud base height, measured by MPL(cloud_base_height)
  • Background Signal(background_signal)
  • Cloud mask(cloud_mask_2)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • base time(base_time)
  • Flag indicating whether the beam was extinguished at indicated cloud top(cloud_top_attenuation_flag)
  • Dummy altitude for Zeb(alt)
  • Laser output energy per pulse(energy_monitor)
  • Time offset of tweaks from base_time(time_offset)
  • Relative random error in backscatter profiles(random_error)
  • Number of laser shots recorded(shots_summed)
  • Detector Temperature(detector_temp)
  • The update time of the historical baseline used for the cloud boundary
    determination of this sample(baseline_update_time)
  • lon(lon)
  • Cloud mask(cloud_mask_1)
  • cloud top height(cloud_top_height)
  • Array of heights for the range gates(height)
  • lat(lat)
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)

Back To Table of Contents

DQRID : D000615.5
Start DateStart TimeEnd DateEnd Time
12/02/1998165812/02/19981800
Subject:
TWP/C2/MPL Data gap
DataStreams:twpmplcmask1clothC2.c1, twpmplnor1campC2.c1, twpmplsmask1clothC2.c1
Description:
Data missing
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)
twpmplnor1campC2.c1:
  • Instrument Temperature(instrument_temp)
  • Laser Temperature(laser_temp)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • Cloud base height, measured by MPL(cloud_base_height)
  • Background Signal(background_signal)
  • Cloud mask(cloud_mask_2)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • base time(base_time)
  • Flag indicating whether the beam was extinguished at indicated cloud top(cloud_top_attenuation_flag)
  • Dummy altitude for Zeb(alt)
  • Laser output energy per pulse(energy_monitor)
  • Time offset of tweaks from base_time(time_offset)
  • Relative random error in backscatter profiles(random_error)
  • Number of laser shots recorded(shots_summed)
  • Detector Temperature(detector_temp)
  • The update time of the historical baseline used for the cloud boundary
    determination of this sample(baseline_update_time)
  • lon(lon)
  • Cloud mask(cloud_mask_1)
  • cloud top height(cloud_top_height)
  • Array of heights for the range gates(height)
  • lat(lat)
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)

Back To Table of Contents

DQRID : D020613.6
Start DateStart TimeEnd DateEnd Time
11/06/1998060111/19/19982359
Subject:
TWP/C2  Installation
DataStreams:twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
Description:
The Nauru ARCS was installed during the period September-November
1998.  Data were being collected by the end of October, but for the
first several weeks of November, the site was undergoing considerable
change, so data from that period should be used with caution.  The
official site dedication occured on November 20.  Most on-site
activity ended following the dedication so we will consider November
20 to be the beginning of the Nauru operations.  The last members of
the installation team left Nauru on November 24.
Measurements:twpmplsmask1clothC2.c1:
  • MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)
  • Height of Center of Each Range Bin(Heights)
twpmplcmask1clothC2.c1:
  • MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)
  • base time(base_time)
  • Height of Center of Each Range Bin(Heights)
  • Time offset of tweaks from base_time(time_offset)

Back To Table of Contents

DQRID : D030528.1
Start DateStart TimeEnd DateEnd Time
05/24/2003230005/25/20030010
Subject:
TWP/MPL/C2 - Power outage in I-Van resulted in Missing Data
DataStreams:twpmplC2.00, twpmplC2.a1, twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
Description:
I forgot to put in the daily report that we took the I van down yesterday to replace the 
fans
in the Clary UPS. This was from 2300z on 24May03 to 0010z on 25May03. Instruments affected 
:

MPL
Ceilometer
MWR
WSI
TSI

Rex
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)

Back To Table of Contents

DQRID : D030922.1
Start DateStart TimeEnd DateEnd Time
11/20/2001000001/07/20022359
Subject:
TWP/MPL/C2 - laser diode failure
DataStreams:twpmplC2.00, twpmplC2.a1, twpmplcbh1scottC2.c0, twpmplcbh1scottC2.c1,
twpmplcmask1clothC2.c1, twpmplnor1campC2.c1, twpmplsmask1clothC2.c1
Description:
On Nov 20, 2001, following a data gap of several hours the MPL energy monitor reading 
showed an abrupt decrease of about 60%.  The laser energy continued to decrease to a reading 
of zero by Nov 23.  Cloud detection is satisfactory through Nov 21, but is not 
satisfactory after this time until the laser diode was replaced on Jan 08, 2002.  Data between the 
dates of 2001-11-22 and 2002-01-08 inclusive is not useful.
Measurements:twpmplcbh1scottC2.c1:
  • Time offset of tweaks from base_time(time_offset)
  • lat(lat)
  • Cloud base height(cbh)
  • base time(base_time)
  • Dummy altitude for Zeb(alt)
  • lon(lon)
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)
twpmplcbh1scottC2.c0:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
twpmplnor1campC2.c1:
  • Instrument Temperature(instrument_temp)
  • Laser Temperature(laser_temp)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • Cloud base height, measured by MPL(cloud_base_height)
  • base time(base_time)
  • Flag indicating whether the beam was extinguished at indicated cloud top(cloud_top_attenuation_flag)
  • Relative random error in backscatter profiles(random_error)
  • Detector Temperature(detector_temp)
  • lon(lon)
  • Cloud mask(cloud_mask_1)
  • Array of heights for the range gates(height)
  • lat(lat)
  • Background Signal(background_signal)
  • Cloud mask(cloud_mask_2)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Dummy altitude for Zeb(alt)
  • Laser output energy per pulse(energy_monitor)
  • Time offset of tweaks from base_time(time_offset)
  • Number of laser shots recorded(shots_summed)
  • The update time of the historical baseline used for the cloud boundary
    determination of this sample(baseline_update_time)
  • cloud top height(cloud_top_height)
twpmplC2.a1:
  • time(time)
  • Repetition rate, or Trigger Frequency of the laser(trigger_freq)
  • Maximum altitude retrieved from multichannel scalar card.(max_altitude)
  • Angle of inclination with respect to horizontal(transceiver_altitude_angle)
  • Laser output energy per pulse(energy_monitor)
  • Amount of time laser pulse lags behind the scalar trigger(laser_scalar_sync_offset)
  • Voltage level which operates the thermistor(voltage_10)
  • Width of range-bins calculated from range_bin_time(range_bin_width)
  • required to correct raw counts for detector deadtime prior to all other
    corrections.(deadtime_correction)
  • Distance from leading edge of first range bin to the center of each bin .(range_bins)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Number of laser pulses summed during measurement interval(shots_sum)
  • Preliminary cloud base height(preliminary_cbh)
  • Detector Temperature(detector_temp)
  • Instrument Temperature(instrument_temp)
  • Filter Temperature(filter_temp)
  • Laser Temperature(laser_temp)
  • 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)
  • Background Signal(background_signal)
  • 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)
  • Time offset of tweaks from base_time(time_offset)
  • lon(lon)
  • base time(base_time)
  • lat(lat)
  • Dummy altitude for Zeb(alt)
  • Amount of time the scalar lags behind the sync trigger(scalar_sync_offset)
  • Array of heights for the range gates(height)
  • range(range)
  • Voltage level which operates the energy monitor(voltage_15)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • 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)

Back To Table of Contents

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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DQRID : D040424.3
Start DateStart TimeEnd DateEnd Time
12/14/2003000002/17/20042359
Subject:
TWP/MPL/C1 - SunShade timing problem
DataStreams:twpmplC1.00, twpmplC1.a1, twpmplcmask1clothC1.c1, twpmplsmask1clothC1.c1
Description:
For an unknown reason, the sun shade was dropping for less then 10 minutes during the 
night at about 19:00 UTC between Dec 14, 2003 and Feb 17, 2004.  Data taken during that ten 
minute interval is not looking at the sky and should be considered as though it were 
missing.

This is a fairly small effect.  Data users can simply average across the interval or block 
the records as "missing".
Measurements:twpmplC1.a1:
  • Laser Temperature(laser_temp)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Filter Temperature(filter_temp)
  • Background Signal(background_signal)
  • Detector Temperature(detector_temp)
  • Dummy altitude for Zeb(alt)
  • GPS raw data filename(filename)
  • lon(lon)
  • Time offset of tweaks from base_time(time_offset)
  • Voltage level which operates the A_D card and the detector(voltage_5)
  • Voltage level which operates the thermistor(voltage_10)
  • Cloud base height(cbh)
  • Number of laser shots recorded(shots_summed)
  • Instrument Temperature(instrument_temp)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • base time(base_time)
  • Laser output energy per pulse(energy_monitor)
  • Voltage level which operates the energy monitor(voltage_15)
  • lat(lat)
twpmplC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
twpmplsmask1clothC1.c1:
  • Height of Center of Each Range Bin(Heights)
  • MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)
twpmplcmask1clothC1.c1:
  • base time(base_time)
  • Time offset of tweaks from base_time(time_offset)
  • Height of Center of Each Range Bin(Heights)
  • MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)

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DQRID : D040424.4
Start DateStart TimeEnd DateEnd Time
03/02/2004000004/18/20042359
Subject:
TWP/MPL/C1 - SP laser diode supply failed
DataStreams:twpmplC1.00, twpmplC1.a1, twpmplcmask1clothC1.c1, twpmplsmask1clothC1.c1
Description:
The Spectra Physics laser diode supply failed on March 2, 2004.  A replacement was 
installed April 18. 

Any data between these dates is worthless.
Measurements:twpmplC1.a1:
  • Laser Temperature(laser_temp)
  • Aerosol backscatter coefficient at 355 nm(backscatter)
  • Filter Temperature(filter_temp)
  • Background Signal(background_signal)
  • Detector Temperature(detector_temp)
  • Dummy altitude for Zeb(alt)
  • GPS raw data filename(filename)
  • lon(lon)
  • Time offset of tweaks from base_time(time_offset)
  • Voltage level which operates the A_D card and the detector(voltage_5)
  • Voltage level which operates the thermistor(voltage_10)
  • Cloud base height(cbh)
  • Number of laser shots recorded(shots_summed)
  • Instrument Temperature(instrument_temp)
  • Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
  • base time(base_time)
  • Laser output energy per pulse(energy_monitor)
  • Voltage level which operates the energy monitor(voltage_15)
  • lat(lat)
twpmplC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)
twpmplsmask1clothC1.c1:
  • Height of Center of Each Range Bin(Heights)
  • MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)
twpmplcmask1clothC1.c1:
  • base time(base_time)
  • Time offset of tweaks from base_time(time_offset)
  • Height of Center of Each Range Bin(Heights)
  • MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)

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END OF DATA