DQR ID | Subject | Data Streams Affected | Data Quality Metric |
---|---|---|---|
D140501.3 | MAO/DL/M1 - Instrument failure | maodlppiM1.b1 | Missing |
D140702.5 | MAO/DL/M1 - Invalid data due to software malfunction | maodlppiM1.b1 | Incorrect |
D140905.8 | MAO/DL/M1 - Power Supply Outage | maodlppiM1.b1 | Missing |
D150619.4 | MAO/DL/M1 - Banding artifacts in the SNR | maodlppiM1.b1 | Incorrect |
D150904.2 | MAO/DL/M1 - Instrument removed from service for repair | maodlppiM1.b1 | Missing |
D150922.4 | MAO/DL/M1 - Missing Data | maodlppiM1.b1 | Does not affect quality |
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
02/01/2014 | 2028 | 02/12/2014 | 1401 | Missing |
Subject: | MAO/DL/M1 - Instrument failure |
DataStreams: | maodlppiM1.b1 |
Description: | The instrument was down during the period in question. No data was recorded. |
Measurements: | maodlppiM1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
06/18/2014 | 1900 | 06/19/2014 | 1621 | Incorrect |
Subject: | MAO/DL/M1 - Invalid data due to software malfunction |
DataStreams: | maodlppiM1.b1 |
Description: | The data acquisition software experienced a malfunction. Data were acquired intermittently during the effected period. The data that were acquired are not valid. The problem was corrected after the system was completely powered down and then back up. |
Measurements: | maodlppiM1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
07/03/2014 | 1810 | 07/05/2014 | 1654 | Missing |
07/13/2014 | 2326 | 07/15/2014 | 1622 | Missing |
08/14/2014 | 1725 | 08/15/2014 | 2150 | Missing |
07/07/2014 | 0543 | 07/09/2014 | 1732 | Missing |
Subject: | MAO/DL/M1 - Power Supply Outage |
DataStreams: | maodlppiM1.b1 |
Description: | The system experienced intermittent stoppages, and thus no data were collected during the effected periods. The reason for the stoppages are not known, but we suspect it had something to do with the by-passed UPS in the power supply box. The UPS was damaged due to water contact back in January. As a short-term temporary fix the box was rewired to by-pass the UPS. This allowed the lidar to run; however, as time passed, the system started to experience more and more intermittent stoppages. On August 15 a new UPS was installed and the wiring was restored to its original configuration in the hopes that this would solve the problem. |
Measurements: | maodlppiM1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
05/12/2015 | 2300 | 06/15/2015 | 2330 | Incorrect |
Subject: | MAO/DL/M1 - Banding artifacts in the SNR |
DataStreams: | maodlppiM1.b1 |
Description: | Time height displays of the intensity (SNR+1) and backscatter fields exhibit obvious horizontal banding artifacts. The bands are regions where the SNR goes negative - which isn't physical. The problem was caused by a glitch in the noise whitening procedure. The problem was fixed when the driver for the data acquisition card was updated. The radial velocities do not exhibit obvious banding; however, they were likely affected in some way. |
Measurements: | maodlppiM1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
08/28/2015 | 0200 | 12/31/2015 | 2359 | Missing |
Subject: | MAO/DL/M1 - Instrument removed from service for repair |
DataStreams: | maodlppiM1.b1 |
Description: | The AMF1 Doppler lidar was taken offline and packed for shipping to the vendor (Halo Photonics) on 28 August. Engineers at Halo will preform repairs and upgrades to the instrument. Data from the instrument will not be available for the remainder of the current AMF1 deployment in Brazil. |
Measurements: | maodlppiM1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
04/19/2015 | 1500 | 08/28/2015 | 0200 | Does not affect quality |
Subject: | MAO/DL/M1 - Missing Data |
DataStreams: | maodlppiM1.b1 |
Description: | The DL suffered from numerous outages during this period. Some of these periods are longer than 24 hours while many are less. The DL was sent off for repairs on 8/28 and will not be deployed again at MAO. |
Measurements: | maodlppiM1.b1:
|