DQR ID | Subject | Data Streams Affected | Data Quality Metric |
---|---|---|---|
D140610.2 | MAO/TRACEGAS/S1 - Pump failure | maoaosnoxS1.a1 | Incorrect |
D140610.3 | MAO/TRACEGAS/S1 - Communication issue | maoaosnoxS1.a1 | Incorrect |
D140610.4 | MAO/TRACEGAS/S1 - NOy spurious signals | maoaosnoxS1.a1 | Does not affect quality |
D140610.5 | MAO/TRACEGAS/S1 - Communications issue | maoaosnoxS1.a1 | Incorrect |
D140610.6 | MAO/TRACEGAS/S1 - NO exceeds NOy | maoaosnoxS1.a1 | Suspect |
D140610.7 | MAO/TRACEGAS/S1 - Interpolated response value calculated | maoaosnoxS1.a1 | Does not affect quality |
D140610.8 | MAO/TRACEGAS/S1 - Large data spikes | maoaosnoxS1.a1 | Does not affect quality |
D140610.9 | MAO/TRACEGAS/S1 - Photolysis cell in NOx operating below normal efficiency | maoaosnoxS1.a1 | Suspect |
D140625.6 | MAO/TRACEGAS/S1 - Photolysis cell in NOx operating below normal efficiency | maoaosnoxS1.a1 | Incorrect |
D140815.1 | MAO/AOS/S1/M1 - Instrument maintenance | maoaosnoxS1.a1 | Incorrect |
D140829.1 | MAO/TRACEGAS/S1 - Instrument problem | maoaosnoxS1.a1 | Suspect |
D141103.3 | MAO/TRACEGAS/S1 - instrument problem | maoaosnoxS1.a1 | Incorrect |
D150324.1 | MAO/TRACEGAS/S1 - System requiring restart | maoaosnoxS1.a1 | Incorrect |
D150417.13 | MAO/TRACEGAS/S1 - Data missing from software restart | maoaosnoxS1.a1 | Missing |
D150501.3 | MAO/TRACEGAS/S1 - Instrument | maoaosnoxS1.a1 | Missing |
D150527.1 | MAO/TRACEGAS/S1 - Calibration standard turned off. | maoaosnoxS1.a1 | Does not affect quality |
D150710.4 | MAO/TRACEGAS/S1 - Calibrator turned off by Operator | maoaosnoxS1.a1 | Does not affect quality |
D150921.2 | MAO/AOS/M1/S1 - Forest Fire | maoaosnoxS1.a1 | Does not affect quality |
D151208.3 | MAO/TRACEGAS/S1 - Pump unable to pull proper flow causing loss in sensitivity | maoaosnoxS1.a1 | Suspect |
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
01/31/2014 | 2306 | 02/01/2014 | 1408 | Incorrect |
Subject: | MAO/TRACEGAS/S1 - Pump failure |
DataStreams: | maoaosnoxS1.a1 |
Description: | Instrument pumps turned off from a sited power issue. Data flat-lined and incorrect. Do not use the data. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
02/03/2014 | 1511 | 02/04/2014 | 1925 | Incorrect |
Subject: | MAO/TRACEGAS/S1 - Communication issue |
DataStreams: | maoaosnoxS1.a1 |
Description: | Inlet box lost communications. Data flat-lined and incorrect. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
02/10/2014 | 1309 | 03/01/2014 | 0000 | Does not affect quality |
Subject: | MAO/TRACEGAS/S1 - NOy spurious signals |
DataStreams: | maoaosnoxS1.a1 |
Description: | NOy MFM (and the Pressure sensor) began to report spurious signals. This appears related to water infiltration. The Operator installed a 'beer can' rain diverter in early March to remedy the problem. The loss of this sensor is inconsequential as the flow is controlled and measured by an upstream Mass Flow Controller in the inlet. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
03/03/2014 | 2302 | 03/04/2014 | 0000 | Incorrect |
03/16/2014 | 1757 | 03/17/2014 | 0000 | Incorrect |
03/04/2014 | 1851 | 03/04/2014 | 0000 | Incorrect |
03/12/2014 | 1905 | 03/13/2014 | 0000 | Incorrect |
Subject: | MAO/TRACEGAS/S1 - Communications issue |
DataStreams: | maoaosnoxS1.a1 |
Description: | Power irregularities caused communication issues with data collector. Data is incorrect. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
03/06/2014 | 1100 | 03/06/2014 | 1400 | Suspect |
Subject: | MAO/TRACEGAS/S1 - NO exceeds NOy |
DataStreams: | maoaosnoxS1.a1 |
Description: | NO exceeds NOy. This is nonsensical. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
04/17/2014 | 0600 | 05/09/2014 | 0006 | Does not affect quality |
Subject: | MAO/TRACEGAS/S1 - Interpolated response value calculated |
DataStreams: | maoaosnoxS1.a1 |
Description: | Calibration cylinder was either turned off or expired. Calibrations prior to and following this period appear nominal. An interpolated response value was used. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
04/19/2014 | 1900 | 04/19/2014 | 2300 | Does not affect quality |
04/26/2014 | 2205 | 04/26/2014 | 2210 | Does not affect quality |
04/14/2014 | 0800 | 04/14/2014 | 1200 | Does not affect quality |
Subject: | MAO/TRACEGAS/S1 - Large data spikes |
DataStreams: | maoaosnoxS1.a1 |
Description: | Large spikes (>100 ppbv) exist in the data presumably due to onsite operation of equipment and/or onsite generator. Last event bracketed by pump outages on generator transfer. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
02/01/2014 | 0000 | 03/31/2014 | 2359 | Suspect |
Subject: | MAO/TRACEGAS/S1 - Photolysis cell in NOx operating below normal efficiency |
DataStreams: | maoaosnoxS1.a1 |
Description: | Photolysis cell in NOx box was not operating at correct efficiency. During February there was ~15-20% efficiency and in March efficiency degraded to ~10%. NO2 data is reported for these months, but should be viewed as indicative rather quantitative. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
04/01/2014 | 0000 | 04/30/2014 | 2359 | Incorrect |
Subject: | MAO/TRACEGAS/S1 - Photolysis cell in NOx operating below normal efficiency |
DataStreams: | maoaosnoxS1.a1 |
Description: | Photolysis cell in NOx box was not operating at correct efficiency. Data is incorrect because efficiency too low. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
08/09/2014 | 1600 | 08/15/2014 | 1500 | Incorrect |
Subject: | MAO/AOS/S1/M1 - Instrument maintenance |
DataStreams: | maoaosnoxS1.a1 |
Description: | Instrument maintenance and cleaning inlets affecting data. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
01/19/2014 | 1726 | 03/31/2014 | 2359 | Suspect |
Subject: | MAO/TRACEGAS/S1 - Instrument problem |
DataStreams: | maoaosnoxS1.a1 |
Description: | Photolysis cell efficiency decreased from the beginning of the deployment due to some of the LEDs on the converter lamp failing. During February and March, the photolysis cell efficiency decreased to approximately 0.2. NO2 Data is provided during this period using the compromised lamp and adjusted for lower efficiency. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
04/01/2014 | 0000 | 08/09/2014 | 2359 | Incorrect |
Subject: | MAO/TRACEGAS/S1 - instrument problem |
DataStreams: | maoaosnoxS1.a1 |
Description: | Photolysis cell efficiency decreased too low and data is not reliable. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
03/24/2015 | 0000 | 03/24/2015 | 1346 | Incorrect |
Subject: | MAO/TRACEGAS/S1 - System requiring restart |
DataStreams: | maoaosnoxS1.a1 |
Description: | When checking the instrument it was discovered to be in an unbooted state. The system was restarted and the data collection restarted. There is no data for the period it was down. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
03/24/2015 | 0000 | 03/24/2015 | 1347 | Missing |
Subject: | MAO/TRACEGAS/S1 - Data missing from software restart |
DataStreams: | maoaosnoxS1.a1 |
Description: | Acquisition software locked up at midnight. Software restarted upon discovery. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
04/09/2015 | 0345 | 04/13/2015 | 1711 | Missing |
Subject: | MAO/TRACEGAS/S1 - Instrument |
DataStreams: | maoaosnoxS1.a1 |
Description: | Instrument data system failed to start after unexpected power failure. Unit was restarted upon observing failure. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
04/09/2015 | 0000 | 04/11/2015 | 2359 | Does not affect quality |
Subject: | MAO/TRACEGAS/S1 - Calibration standard turned off. |
DataStreams: | maoaosnoxS1.a1 |
Description: | Calibration standard was turned off (or ran out) for 3 days. Standard additions before and after this period are consistent. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
06/22/2015 | 1400 | 06/26/2015 | 0200 | Does not affect quality |
Subject: | MAO/TRACEGAS/S1 - Calibrator turned off by Operator |
DataStreams: | maoaosnoxS1.a1 |
Description: | Operator failed to initiate software control of Calibrator following servicing of instrument. Consistent behavior before and after episode. Minimal impact on calibration controls. |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
10/04/2015 | 0000 | 10/08/2015 | 2359 | Does not affect quality |
09/03/2015 | 1800 | 09/03/2015 | 2359 | Does not affect quality |
09/13/2015 | 1653 | 09/13/2015 | 1810 | Does not affect quality |
Subject: | MAO/AOS/M1/S1 - Forest Fire |
DataStreams: | maoaosnoxS1.a1 |
Description: | Smoke from forest burning can be seen on the TSI images rising and then subsequently moving over the site during this period. Many of the AOS instruments observed a sharp spike in data values. October 4-8 multiple fires in the area resulted in hazy conditions during this entire period. Most notable in the following instruments and variables ACSM - Total Organics AETH - Black Carbon Concentrations at all wavelengths CCN100 - Spike in number concentrations occurred a few hours after the smoke plume CLAP3W - Absorption Coefficient CPC - Similar to the CCN100, spike in particle concentration occurred a few hours later CPCF - Particle Concentration CPCU - Particle Concentration NEPHELOMETERS - Scattering/Backscattering Coeff PSAP3W - Absorption Coefficient SMPS - Concentration and Size Distribution UHSAS - Size Distribution |
Measurements: | maoaosnoxS1.a1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
10/12/2015 | 0000 | 12/01/2015 | 2359 | Suspect |
Subject: | MAO/TRACEGAS/S1 - Pump unable to pull proper flow causing loss in sensitivity |
DataStreams: | maoaosnoxS1.a1 |
Description: | Steady reduction in NOy sensitivity. Conversion efficiency is unaffected. |
Measurements: | maoaosnoxS1.a1:
|