Data Quality Report for Order ID: 187408
User ID: bibii1    Date completed: 2017-08-23
All DQRs
DQR ID Subject Affected Data Streams Data Quality Metric
D160229.2 SGP/DL/DLPROF/C1 - Data collected at vendor facility sgpdlprofwind4newsC1.c1 Incorrect
D160617.10 SGP/DL/C1 - Power supply issue sgpdlfptC1.a0 Missing
D170303.11 SGP/DL/C1 - Instrument sgpdlfptC1.b1 Note
D160229.3 SGP/DL/DLPROF/C1 - Instrumental artifact in vertical velocity variance profiles sgpdlfptC1.b1 Suspect
D170303.10 SGP/DL/C1 - Returned to vendor for repair sgpdlfptC1.a0 Suspect
D150619.1 SGP/DL/C1 - Instrument sgpdlfptC1.a0 Missing
D141124.9 SGP/DL/C1 - Instrument failure sgpdlrhi2C1.a0 Missing
D170310.16 SGP/Central Facility - Power Outage sgpirt25m20sC1.a0 Note
D160520.12 SGP/DL/DLPROF/C1 - Reprocess: Incorrect serial number sgpdlcal2C1.b1 Note
D160104.7 SGP Site Power Outage Due to Winter Storm sgpirt200msE13.a1 Note
 
DQR ID: D160229.2    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2014-10-22 15:40:00 2014-10-24 00:00:00 Incorrect
Subject: SGP/DL/DLPROF/C1 - Data collected at vendor facility
Affected Datastreams: sgpdlprofwind4newsC1.c1
Description Data collected during this period were recorded at the vendor facility in England (not SGP) for test purposes only.
Measurements
  • range (Distance from Lidar to center of range gate)
  • azimuth (Azimuth relative to true north)
  • elevation (Beam elevation)
  • base_time (Base time in Epoch)
  • lat (North latitude)
  • lon (East longitude)
  • attenuated_backscatter (Attenuated backscatter)
  • time (Time offset from midnight)
  • qc_radial_velocity (Quality check results on field: Radial velocity)
  • qc_time (Quality check results on field: Time offset from midnight)
  • alt (Altitude above mean sea level)
  • time_offset (Time offset from base_time)
  • radial_velocity (Radial velocity)
  • intensity (Intensity (signal to noise ratio + 1))
 
DQR ID: D160617.10    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2016-05-27 20:20:00 2016-05-31 16:27:00 Missing
Subject: SGP/DL/C1 - Power supply issue
Affected Datastreams: sgpdlfptC1.a0
Description The supply voltage from the external power supply was running low due to overheating. As a result, the instrument was intentionally shutdown for the long Memorial Day weekend.
Measurements
  • range (Distance from Lidar to center of range gate)
  • azimuth (Azimuth relative to true north)
  • radial_velocity (Radial velocity)
  • lat (North latitude)
  • base_time (Base time in Epoch)
  • lon (East longitude)
  • attenuated_backscatter (Attenuated backscatter)
  • time (Time offset from midnight)
  • qc_radial_velocity (Quality check results on field: Radial velocity)
  • qc_time (Quality check results on field: Time offset from midnight)
  • alt (Altitude above mean sea level)
  • time_offset (Time offset from base_time)
  • elevation (Beam elevation)
  • intensity (Intensity (signal to noise ratio + 1))
 
DQR ID: D170303.11    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2017-02-23 17:02:00 2017-02-27 16:18:00 Note
Subject: SGP/DL/C1 - Instrument
Affected Datastreams: sgpdlfptC1.b1
Description The instrument was returned to service on 23 February following repair by the vendor. Once it was brought into service the lidar defaulted to a scan schedule that the vendor was using. This was a slant path stare at an elevation angle of 12 degrees. On 27 February the mentor reset the scan schedule to the "normal" schedule.
Measurements
  • range (Distance from Lidar to center of range gate)
  • azimuth (Azimuth relative to true north)
  • radial_velocity (Radial velocity)
  • base_time (Base time in Epoch)
  • lat (North latitude)
  • lon (East longitude)
  • attenuated_backscatter (Attenuated backscatter)
  • time (Time offset from midnight)
  • qc_radial_velocity (Quality check results on field: Radial velocity)
  • qc_time (Quality check results on field: Time offset from midnight)
  • alt (Altitude above mean sea level)
  • time_offset (Time offset from base_time)
  • elevation (Beam elevation)
  • intensity (Intensity (signal to noise ratio + 1))
 
DQR ID: D160229.3    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2011-04-20 16:00:00 2015-07-23 19:00:00 Suspect
Subject: SGP/DL/DLPROF/C1 - Instrumental artifact in vertical velocity variance profiles
Affected Datastreams: sgpdlfptC1.b1
Description Long-term averages of vertical velocity variance profiles developed from vertical staring data show a height-dependent sinusoidal modulation superimposed on the atmospheric variance profile. This modulation causes a wiggle in the variance profile. The period of the wiggle is about 350 m, and the effect is most obvious during hot afternoon periods in the summer months. The exact cause of this problem is not known, but we suspect that it may be caused by temperature sensitivity in beam alignment.
Measurements
  • radial_velocity (Radial velocity)
 
DQR ID: D170303.10    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2016-11-10 12:00:00 2017-02-23 17:01:00 Suspect
Subject: SGP/DL/C1 - Returned to vendor for repair
Affected Datastreams: sgpdlfptC1.a0
Description No data was recorded during the period in question because the lidar was shipped to the vendor for repair to fix the problem with the high internal relative humidity.
Measurements
  • range (Distance from Lidar to center of range gate)
  • radial_velocity (Radial velocity)
  • azimuth (Azimuth relative to true north)
  • lat (North latitude)
  • base_time (Base time in Epoch)
  • lon (East longitude)
  • attenuated_backscatter (Attenuated backscatter)
  • time (Time offset from midnight)
  • qc_radial_velocity (Quality check results on field: Radial velocity)
  • qc_time (Quality check results on field: Time offset from midnight)
  • alt (Altitude above mean sea level)
  • time_offset (Time offset from base_time)
  • elevation (Beam elevation)
  • intensity (Intensity (signal to noise ratio + 1))
 
DQR ID: D150619.1    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2015-06-17 11:00:00 2015-06-18 22:00:00 Missing
Subject: SGP/DL/C1 - Instrument
Affected Datastreams: sgpdlfptC1.a0
Description The instrument failed to restart following a site-wide power outage due to a glitch in the automated start up procedure. The problem has since been fixed.
Measurements
  • range (Distance from Lidar to center of range gate)
  • azimuth (Azimuth relative to true north)
  • elevation (Beam elevation)
  • lat (North latitude)
  • base_time (Base time in Epoch)
  • lon (East longitude)
  • attenuated_backscatter (Attenuated backscatter)
  • time (Time offset from midnight)
  • alt (Altitude above mean sea level)
  • time_offset (Time offset from base_time)
  • radial_velocity (Radial velocity)
  • intensity (Intensity (signal to noise ratio + 1))
 
DQR ID: D141124.9    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2014-07-23 18:00:00 2014-11-18 19:46:00 Missing
Subject: SGP/DL/C1 - Instrument failure
Affected Datastreams: sgpdlrhi2C1.a0
Description In July the SGP DL experienced a failure. The instrument was subsequently sent back to the vendor for repair and upgrade. That work was successfully completed in October. The instrument was then shipped back to SGP and reinstalled in November.
Measurements
  • range (Distance from Lidar to center of range gate)
  • azimuth (Azimuth relative to true north)
  • elevation (Beam elevation)
  • lat (North latitude)
  • base_time (Base time in Epoch)
  • lon (East longitude)
  • attenuated_backscatter (Attenuated backscatter)
  • time (Time offset from midnight)
  • alt (Altitude above mean sea level)
  • time_offset (Time offset from base_time)
  • radial_velocity (Radial velocity)
  • intensity (Intensity (signal to noise ratio + 1))
 
DQR ID: D170310.16    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2017-03-05 00:23:01 2017-03-09 14:30:21 Note
Subject: SGP/Central Facility - Power Outage
Affected Datastreams: sgpirt25m20sC1.a0
Description Automated scripts show that these instruments were affected by a power outage at the central facility resulting in missing data. Most of the instruments came back online on March 6th but some took longer.
Measurements
  • range (Distance from Lidar to center of range gate)
  • azimuth (Azimuth relative to true north)
  • radial_velocity (Radial velocity)
  • lat (North latitude)
  • base_time (Base time in Epoch)
  • lon (East longitude)
  • attenuated_backscatter (Attenuated backscatter)
  • time (Time offset from midnight)
  • qc_radial_velocity (Quality check results on field: Radial velocity)
  • qc_time (Quality check results on field: Time offset from midnight)
  • alt (Altitude above mean sea level)
  • time_offset (Time offset from base_time)
  • elevation (Beam elevation)
  • intensity (Intensity (signal to noise ratio + 1))
 
DQR ID: D160520.12    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2016-05-02 18:00:00 2016-05-19 22:00:00 Note
Subject: SGP/DL/DLPROF/C1 - Reprocess: Incorrect serial number
Affected Datastreams: sgpdlcal2C1.b1
Description The instrument serial number that appears in the netcdf files global attributes is incorrect. The correct serial number is 0116-107.
Measurements
  • base_time (Base time in Epoch)
 
DQR ID: D160104.7    (Back to Top)
Start Date Start Time End Date End Time Data Quality Metric
2015-12-26 00:00:00 2016-01-01 23:59:59 Note
Subject: SGP Site Power Outage Due to Winter Storm
Affected Datastreams: sgpirt200msE13.a1
Description On Saturday and Sunday, December 26 and 27th a powerful winter storm (Goliath) brought sleet and freezing rain to much of Oklahoma with wind gusts of 45 MPH at times. The result was very very slick roads and mass power outages. The SGP central facility lost power at 8:55 PM CDT on Sunday, December 27th. The power was restored on 7:56 PM CDT on Wednesday, December 30th Site Emergency procedures were activated and Technicians drained water out of instrument reservoirs and other measures as needed, early Monday morning. On Wednesdays as roads and power started was restored to much of the areas east of I-35 , Site Technicians performed maintenance on several Extended Facilities. During this period, data are potentially missing, incorrect, or suspect. Carefully inspect the data before use.
Measurements
  • range (Distance from Lidar to center of range gate)
  • azimuth (Azimuth relative to true north)
  • elevation (Beam elevation)
  • lat (North latitude)
  • base_time (Base time in Epoch)
  • lon (East longitude)
  • attenuated_backscatter (Attenuated backscatter)
  • time (Time offset from midnight)
  • qc_time (Quality check results on field: Time offset from midnight)
  • alt (Altitude above mean sea level)
  • time_offset (Time offset from base_time)
  • radial_velocity (Radial velocity)
  • intensity (Intensity (signal to noise ratio + 1))