DQR ID | Subject | Affected Data Streams | Data Quality Metric |
---|---|---|---|
D151210.2 | SGP/AOS/C1 - Pump and blower failure | sgpaosnephdryC1.a1 | Incorrect |
D120608.1 | SGP/AOS/C1 - CPC leak | sgpnoaaaosavgC1.b0 | Incorrect |
D140929.2 | SGP/AOS/C1 - Frequent power and communication loss problems | sgpaospsap3wC1.b1 | Note |
D141031.7 | SGP/AOS/C1 - New UPS installed | sgpaosC1.a1 | Missing |
D140717.5 | SGP/AOS/C1 - Leak in Condensation Particle Counter | sgpaosC1.a1 | Incorrect |
D120703.1 | SGP/AOS/C1 - Missing data | sgpaosacsmC1.a1 | Missing |
D131217.2 | SGP/AOS/C1 - Dry nephelometer failure | sgpnoaaaosC1.b1 | Missing |
D151103.3 | SGP/AOS/CCN/CLAP/CPC/NEPHELOMETER/PSAP/C1 - System Maintenance | sgpnoaaaosavgC1.b0 | Incorrect |
D130906.2 | SGP/AOS/C1 - Impactor valve failure | sgpnoaaaosavgC1.b1 | Suspect |
D161027.2 | SGP/AOS/C1 - Environmental Smoke | sgpnoaaaosavgC1.b1 | Note |
D151210.5 | SGP/AOS/C1 - Power outage | sgpnoaaaosC1.b1 | Incorrect |
D110815.3 | SGP/AOS/C1 - Nephelometer shutter error | sgpaosnephdryC1.a1 | Suspect |
D130705.2 | SGP/AOS/C1 - Missing data | sgpnoaaaosavgC1.b1 | Missing |
D131028.1 | SGP/AOS/C1 - PSAP data removed due to high RH | sgpnoaaaosavgC1.b1 | Incorrect |
D160104.7 | SGP Site Power Outage Due to Winter Storm | sgpirt200msE13.a1 | Note |
D101020.7 | SGP/AOS/C1 - Data processing problem | sgpnoaaaosavgC1.b1 | Note |
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2015-12-07 | 15:52:00 | 2015-12-08 | 16:49:00 | Incorrect |
Subject: | SGP/AOS/C1 - Pump and blower failure |
---|---|
Affected Datastreams: | sgpaosnephdryC1.a1 |
Description | The fuse on the power strip with the pump and blower blew. The blower motor seized and the blower had to be replaced. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2010-10-01 | 15:40:00 | 2011-04-18 | 20:10:00 | Incorrect |
Subject: | SGP/AOS/C1 - CPC leak |
---|---|
Affected Datastreams: | sgpnoaaaosavgC1.b0 |
Description | There was a slow internal leak in the CPC instrument and the data slowly decreased over time. The CN concentration is a lower limit and is likely 5 to 20% lower than the actual value with higher errors toward the end of the DQR period. The problem was fixed by replacing the CPC saturator block. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2014-06-12 | 06:14:00 | 2014-07-21 | 13:40:00 | Note |
Subject: | SGP/AOS/C1 - Frequent power and communication loss problems |
---|---|
Affected Datastreams: | sgpaospsap3wC1.b1 |
Description | There were frequent power and communication losses over the time period. The problem was resolved after power was redistributed and all data acquisition components were replaced. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2014-10-23 | 19:54:00 | 2014-10-23 | 21:25:59 | Missing |
Subject: | SGP/AOS/C1 - New UPS installed |
---|---|
Affected Datastreams: | sgpaosC1.a1 |
Description | System down while new UPS is installed |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2014-06-21 | 02:15:00 | 2014-07-17 | 20:00:00 | Incorrect |
Subject: | SGP/AOS/C1 - Leak in Condensation Particle Counter |
---|---|
Affected Datastreams: | sgpaosC1.a1 |
Description | Leak in Condensation Particle Counter (CPC) system. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2012-04-07 | 00:00:00 | 2012-04-09 | 23:59:00 | Missing |
2012-04-14 | 00:00:00 | 2012-04-16 | 23:59:00 | Missing |
Subject: | SGP/AOS/C1 - Missing data |
---|---|
Affected Datastreams: | sgpaosacsmC1.a1 |
Description | Data are missing and unrecoverable. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2013-11-06 | 18:00:00 | 2013-11-16 | 00:00:00 | Missing |
Subject: | SGP/AOS/C1 - Dry nephelometer failure |
---|---|
Affected Datastreams: | sgpnoaaaosC1.b1 |
Description | There was a communications problem with the nephelometer that resulted in intermittent data transmission and bad background values. The neph was removed for repair on Nov 15th. Use the wet neph data instead during this time as the humidifier was off. After this time the wet neph was put in the dry neph position until the neph could be repaired. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2015-10-20 | 20:44:00 | 2015-10-24 | 23:00:00 | Incorrect |
Subject: | SGP/AOS/CCN/CLAP/CPC/NEPHELOMETER/PSAP/C1 - System Maintenance |
---|---|
Affected Datastreams: | sgpnoaaaosavgC1.b0 |
Description | The system was offline for cleaning and calibration. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2013-07-18 | 21:29:00 | 2013-08-30 | 15:02:00 | Suspect |
Subject: | SGP/AOS/C1 - Impactor valve failure |
---|---|
Affected Datastreams: | sgpnoaaaosavgC1.b1 |
Description | Solenoid valve for the impactor valve failed. All data for this time period are for sub 10-micron aerosol. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2016-10-17 | 12:00:00 | 2016-10-18 | 02:00:00 | Note |
Subject: | SGP/AOS/C1 - Environmental Smoke |
---|---|
Affected Datastreams: | sgpnoaaaosavgC1.b1 |
Description | Large aerosol signal associated with local agricultural or grass fires |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2015-11-17 | 04:25:00 | 2015-11-17 | 16:00:00 | Incorrect |
Subject: | SGP/AOS/C1 - Power outage |
---|---|
Affected Datastreams: | sgpnoaaaosC1.b1 |
Description | Power outage, no data collected. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2011-07-25 | 00:00:00 | 2011-08-03 | 00:00:00 | Suspect |
Subject: | SGP/AOS/C1 - Nephelometer shutter error |
---|---|
Affected Datastreams: | sgpaosnephdryC1.a1 |
Description | The neph backscatter shutter started to fail which resulted in large background values in the dry nephelometer. The data is poor quality even though it may look ok. Instead use the data in the wet nephelometer. Note that during some of this time period the RH value inside of this neph ramped up and down so use data at the low RH values. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2013-06-13 | 18:00:00 | 2013-06-17 | 15:06:00 | Missing |
Subject: | SGP/AOS/C1 - Missing data |
---|---|
Affected Datastreams: | sgpnoaaaosavgC1.b1 |
Description | Data are missing and unrecoverable. |
Measurements |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2013-07-15 | 00:00:00 | 2013-09-30 | 10:00:00 | Incorrect |
Subject: | SGP/AOS/C1 - PSAP data removed due to high RH |
---|---|
Affected Datastreams: | sgpnoaaaosavgC1.b1 |
Description | PSAP data was removed from b1 level data and VAPS because of high noise and negative values from high RH on filter. |
Measurements |
|
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 |
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
2009-01-01 | 00:00:00 | 2010-10-01 | 00:00:00 | Note |
Subject: | SGP/AOS/C1 - Data processing problem |
---|---|
Affected Datastreams: | sgpnoaaaosavgC1.b1 |
Description | The AOS data was reprocessed for the AMF, SGP and NSA sites. There was an error in the processing of the corrections for the PSAP absorption signal such that a low pass filter was implemented for the scattering data used in these corrections.The difference between the corrected and previous data is < 0.05 Mm-1 (below the instrument detection limit) and should not have a significant effect on the previous data. Data will be reprocessed at a later time when more significant changes to the data processing are implemented. |
Measurements |
|