Data Quality Reports for Session: 139011 User: qyj Completed: 11/30/2011

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D000608.11TWP/C2/MPL DetectortwpmplC2.00, twpmplC2.a1, twpmplnor1campC2.c1, twpmplcmask1clothC2.c1,
twpmplsmask1clothC2.c1
D000615.2TWP/C2/MPL Data Gaptwpmplnor1campC2.c1, twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
D000615.3TWP/C2/MPL Data gaptwpmplnor1campC2.c1, twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
D000615.4TWP/C2/MPL Data gaptwpmplnor1campC2.c1, twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
D000615.5TWP/C2/MPL Data gaptwpmplnor1campC2.c1, twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
D040424.1SGP/MPL/C1 - Signal degradingsgpmplC1.a1, sgpmplnor1campC1.c1
D040525.28SGP/MPL/C1 - Metadata errorssgpmplC1.a1, sgpmplnor1campC1.c1
D070515.4TWP/MPL/C2 - Reprocess: Incorrect longitude and altitude reportedtwpmplnor1campC2.c1
D980331.1Instrument misalignment reportsgpmplnor1campC1.c1
D980402.1Laser Output Energy Monitor at Zerosgpmplnor1campC1.c1
D980402.2Laser Output Energy Monitor at Zerosgpmplnor1campC1.c1
D990224.1SGP/MPL - Missing data due to blown detectorsgpmplC1.a1, DsgpmplhrC1.00, sgpmplnor1campC1.c1, sgpmplcbh1scottC1.c1


DQRID : D000608.11
Start DateStart TimeEnd DateEnd Time
02/03/1999000004/20/19991200
Subject:
TWP/C2/MPL Detector
DataStreams:twpmplC2.00, twpmplC2.a1, twpmplnor1campC2.c1, twpmplcmask1clothC2.c1,
twpmplsmask1clothC2.c1
Description:
The MPL detector failed and was shut down.
Measurements:twpmplC2.a1:
  • range_bin_time
  • pulse_rep
  • lon
  • voltage_05
  • base_time
  • range_offset
  • property
  • shots_summed
  • shots_sum
  • instrument_temp
  • time_offset
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • lat
  • Backscatter(backscatter)
  • filter_temp
  • laser_scalar_sync_offset
  • transceiver_azimuth_angle
  • detector_temp
  • range_bins
  • deadtime_correction
  • time
  • total_counts
  • energy_monitor
  • transceiver_altitude_angle
  • Preliminary cloud base height above ground level(preliminary_cbh)
  • alt
  • laser_temp
  • scalar_sync_offset
  • background_signal
  • range
  • voltage_15
  • voltage_10
  • range_bin_width
  • max_altitude
  • trigger_freq
  • laser_sync_offset
twpmplC2.00:
  • Raw data stream - documentation not supported
twpmplsmask1clothC2.c1:
  • base_time
  • Heights
  • time_offset
  • MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth)
twpmplcmask1clothC2.c1:
  • MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)
  • Heights
  • base_time
  • time_offset
twpmplnor1campC2.c1:
  • energy_monitor
  • shots_summed
  • cloud_top_attenuation_flag
  • lat
  • base_time
  • instrument_temp
  • baseline_update_time
  • time_offset
  • pulse_rep
  • background_signal
  • cloud_mask_1
  • cloud_mask_2
  • alt
  • Cloud base height(cloud_base_height)
  • lon
  • Backscatter(backscatter)
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • cloud top height(cloud_top_height)
  • detector_temp
  • laser_temp
  • random_error

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DQRID : D000615.2
Start DateStart TimeEnd DateEnd Time
11/20/1998204811/21/19980318
Subject:
TWP/C2/MPL Data Gap
DataStreams:twpmplnor1campC2.c1, twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
Description:
Data missing
Measurements:twpmplsmask1clothC2.c1:
  • MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth)
  • base_time
  • Heights
  • time_offset
twpmplcmask1clothC2.c1:
  • MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)
  • time_offset
  • Heights
  • base_time
twpmplnor1campC2.c1:
  • cloud_mask_1
  • cloud_mask_2
  • alt
  • shots_summed
  • energy_monitor
  • cloud_top_attenuation_flag
  • Cloud base height(cloud_base_height)
  • lon
  • Backscatter(backscatter)
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • cloud top height(cloud_top_height)
  • lat
  • base_time
  • detector_temp
  • instrument_temp
  • baseline_update_time
  • time_offset
  • pulse_rep
  • laser_temp
  • background_signal
  • random_error

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DQRID : D000615.3
Start DateStart TimeEnd DateEnd Time
11/21/1998032011/21/19980532
Subject:
TWP/C2/MPL Data gap
DataStreams:twpmplnor1campC2.c1, twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
Description:
Data missing
Measurements:twpmplsmask1clothC2.c1:
  • MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth)
  • base_time
  • Heights
  • time_offset
twpmplcmask1clothC2.c1:
  • MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)
  • time_offset
  • Heights
  • base_time
twpmplnor1campC2.c1:
  • cloud_mask_1
  • cloud_mask_2
  • alt
  • shots_summed
  • energy_monitor
  • cloud_top_attenuation_flag
  • Cloud base height(cloud_base_height)
  • lon
  • Backscatter(backscatter)
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • cloud top height(cloud_top_height)
  • lat
  • base_time
  • detector_temp
  • instrument_temp
  • baseline_update_time
  • time_offset
  • pulse_rep
  • laser_temp
  • background_signal
  • random_error

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DQRID : D000615.4
Start DateStart TimeEnd DateEnd Time
11/23/1998021811/23/19980512
Subject:
TWP/C2/MPL Data gap
DataStreams:twpmplnor1campC2.c1, twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
Description:
Data missing
Measurements:twpmplsmask1clothC2.c1:
  • MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth)
  • base_time
  • Heights
  • time_offset
twpmplcmask1clothC2.c1:
  • MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)
  • time_offset
  • Heights
  • base_time
twpmplnor1campC2.c1:
  • cloud_mask_1
  • cloud_mask_2
  • alt
  • shots_summed
  • energy_monitor
  • cloud_top_attenuation_flag
  • Cloud base height(cloud_base_height)
  • lon
  • Backscatter(backscatter)
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • cloud top height(cloud_top_height)
  • lat
  • base_time
  • detector_temp
  • instrument_temp
  • baseline_update_time
  • time_offset
  • pulse_rep
  • laser_temp
  • background_signal
  • random_error

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DQRID : D000615.5
Start DateStart TimeEnd DateEnd Time
12/02/1998165812/02/19981800
Subject:
TWP/C2/MPL Data gap
DataStreams:twpmplnor1campC2.c1, twpmplcmask1clothC2.c1, twpmplsmask1clothC2.c1
Description:
Data missing
Measurements:twpmplsmask1clothC2.c1:
  • MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth)
  • base_time
  • Heights
  • time_offset
twpmplcmask1clothC2.c1:
  • MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)
  • time_offset
  • Heights
  • base_time
twpmplnor1campC2.c1:
  • cloud_mask_1
  • cloud_mask_2
  • alt
  • shots_summed
  • energy_monitor
  • cloud_top_attenuation_flag
  • Cloud base height(cloud_base_height)
  • lon
  • Backscatter(backscatter)
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • cloud top height(cloud_top_height)
  • lat
  • base_time
  • detector_temp
  • instrument_temp
  • baseline_update_time
  • time_offset
  • pulse_rep
  • laser_temp
  • background_signal
  • random_error

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DQRID : D040424.1
Start DateStart TimeEnd DateEnd Time
09/25/2002000001/16/20032359
Subject:
SGP/MPL/C1 - Signal degrading
DataStreams:sgpmplC1.a1, sgpmplnor1campC1.c1
Description:
The MPL viewport window was blown off during a storm on 2002/09/25.  The MPL received a 
soaking of rain.  Following this event, although site operations cleaned and dried the 
optics, the lidar performance continued to degrade over the next few months.  Although 
initially suitable for cloud detection, by Dec 10th the lidar was providing useful results only 
during the day (oddly enough).  By Jan 16, the detector was dead.  

It is not recommended to depend on night-time cloud base heights after Dec. 10 2002. 

It is not recommended to use any of the data after 9/25 for aerosol retrievals.
Measurements:sgpmplC1.a1:
  • lon
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • range_offset
  • laser_scalar_sync_offset
  • Preliminary cloud base height above ground level(preliminary_cbh)
  • filter_temp
  • trigger_freq
  • time
  • energy_monitor
  • transceiver_altitude_angle
  • voltage_15
  • voltage_10
  • pulse_rep
  • Backscatter(backscatter)
  • laser_sync_offset
  • range_bin_time
  • laser_temp
  • time_offset
  • base_time
  • scalar_sync_offset
  • instrument_temp
  • total_counts
  • background_signal
  • lat
  • range
  • shots_sum
  • voltage_05
  • max_altitude
  • range_bins
  • detector_temp
  • shots_summed
  • deadtime_correction
  • alt
  • property
  • range_bin_width
  • transceiver_azimuth_angle
sgpmplnor1campC1.c1:
  • background_signal
  • energy_monitor
  • alt
  • Cloud base height(cloud_base_height)
  • cloud_top_attenuation_flag
  • Backscatter(backscatter)
  • lon
  • baseline_update_time
  • detector_temp
  • cloud_mask_2
  • random_error
  • cloud_mask_1
  • cloud top height(cloud_top_height)
  • pulse_rep
  • time_offset
  • shots_summed
  • lat
  • instrument_temp
  • base_time
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • laser_temp

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DQRID : D040525.28
Start DateStart TimeEnd DateEnd Time
05/01/1996000001/19/20002359
Subject:
SGP/MPL/C1 - Metadata errors
DataStreams:sgpmplC1.a1, sgpmplnor1campC1.c1
Description:
The latitude, longitude and altitude of the Micropulse Lidar
(MPL) were incorrectly entered into the ARM database.  The 
correct location of the SGP.C1 MPL is:
   Lat: 36.606N
   Lon: 97.485W
   Alt:    316m
Measurements:sgpmplC1.a1:
  • lat
  • lon
  • alt
sgpmplnor1campC1.c1:
  • lon
  • lat
  • alt

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DQRID : D070515.4
Start DateStart TimeEnd DateEnd Time
11/20/1998000011/18/19992359
Subject:
TWP/MPL/C2 - Reprocess: Incorrect longitude and altitude reported
DataStreams:twpmplnor1campC2.c1
Description:
The longitude of the MPL instrument is reported as -166.916.  The correct
longitude is +166.916.

The altitude of the MPL instrument is reported as 7.2.	The correct altitude is 7.1 M.

These data will be reprocessed at a low priority.
Measurements:twpmplnor1campC2.c1:
  • lon
  • alt

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DQRID : D980331.1
Start DateStart TimeEnd DateEnd Time
04/15/1997000009/10/19970000
Subject:
Instrument misalignment report
DataStreams:sgpmplnor1campC1.c1
Description:
A low-resolution (300 m) MPL system (unit number 04) was installed at the
SGP site in April '97 upon the laser diode failure of the 02 unit in
March.  Calibration of this instrument in August found that the optics
were misaligned causing a near range focusing error in the data.  
Calibration files produced for this data, while acceptable, do not 
completely correct for the problem.  As a result, aerosol property 
retrievals using this data are not suggested.  Cloud boundary heights, 
though appear satisfactory.  This system was removed from SGP in early 
September
Measurements:sgpmplnor1campC1.c1:
  • Backscatter(backscatter)

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DQRID : D980402.1
Start DateStart TimeEnd DateEnd Time
04/25/1997212304/28/19971459
Subject:
Laser Output Energy Monitor at Zero
DataStreams:sgpmplnor1campC1.c1
Description:
Energy monitor reading for laser output is at zero for intermittant
one-minute averaged shots during this flagged data period.  From the
lidar equation progressing to normalized relative backscatter the
laser energy is required and is a denominator.  Therefore a value of
zero will render the product as infinite.  Shots where this has taken
place are left as zeros.  It is suggested that the time period
19970425 2123 - 19970428 1459
be avoided for any quantitative analysis.
Measurements:sgpmplnor1campC1.c1:
  • Backscatter(backscatter)

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DQRID : D980402.2
Start DateStart TimeEnd DateEnd Time
09/02/1997221109/03/19971359
09/07/1997144509/08/19971544
09/10/1997214209/10/19972355
Subject:
Laser Output Energy Monitor at Zero
DataStreams:sgpmplnor1campC1.c1
Description:
Energy monitor reading for laser output is at zero for intermittant
one-minute averaged shots during this flagged data period.  From the
lidar equation progressing to normalized relative backscatter the
laser energy is required and is a denominator.  Therefore a value of
zero will render the product as infinite.  Shots where this has taken
place are left as zeros.  It is suggested that the time periods 
19970902 2211 - 19970903 1359,
19970907 1445 - 19970908 1544,
and
19970910 2142 - 19970910 2355
be avoided for any quantitative analysis.
Measurements:sgpmplnor1campC1.c1:
  • Backscatter(backscatter)

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DQRID : D990224.1
Start DateStart TimeEnd DateEnd Time
11/11/1998000001/23/19992359
Subject:
SGP/MPL - Missing data due to blown detector
DataStreams:sgpmplC1.a1, DsgpmplhrC1.00, sgpmplnor1campC1.c1, sgpmplcbh1scottC1.c1
Description:
Sometime early 11/11 the detector on the
MPL-004 blew out.  The Detector was replaced by Albert Mendoza.
The instrument was operational on Jan. 23, 1999.

Link this to P981119.2 that reported the blown detector and the
corrective action taken
Measurements:sgpmplcbh1scottC1.c1:
  • Preliminary cloud base height above ground level(cbh)
  • lon
  • alt
  • base_time
  • time_offset
  • lat
sgpmplC1.a1:
  • lon
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • range_offset
  • laser_scalar_sync_offset
  • Preliminary cloud base height above ground level(preliminary_cbh)
  • filter_temp
  • trigger_freq
  • time
  • energy_monitor
  • transceiver_altitude_angle
  • voltage_15
  • voltage_10
  • pulse_rep
  • Backscatter(backscatter)
  • laser_sync_offset
  • range_bin_time
  • laser_temp
  • time_offset
  • base_time
  • scalar_sync_offset
  • instrument_temp
  • total_counts
  • background_signal
  • lat
  • range
  • shots_sum
  • voltage_05
  • max_altitude
  • range_bins
  • detector_temp
  • shots_summed
  • deadtime_correction
  • alt
  • property
  • range_bin_width
  • transceiver_azimuth_angle
sgpmplnor1campC1.c1:
  • background_signal
  • energy_monitor
  • alt
  • Cloud base height(cloud_base_height)
  • cloud_top_attenuation_flag
  • Backscatter(backscatter)
  • lon
  • baseline_update_time
  • detector_temp
  • random_error
  • cloud_mask_2
  • cloud_mask_1
  • cloud top height(cloud_top_height)
  • pulse_rep
  • time_offset
  • shots_summed
  • lat
  • instrument_temp
  • base_time
  • Pressure, associated geometric height, at altitude, NGM model output(height)
  • laser_temp
DsgpmplhrC1.00:
  • Development raw data stream - documentation not supported

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END OF DATA