DQR ID | Subject | Data Streams Affected | Data Quality Metric |
---|---|---|---|
D100106.1 | SGP/MET/E9 - Wind Speed Data Incorrect | sgpmetE9.b1 | Incorrect |
D110524.3 | SGP/MET/E9 - Time-stamp uncertainty | sgpmetE9.b1 | Incorrect |
D111114.1 | SGP/MET/E9 - RH probe failure | sgpmetE9.b1 | Incorrect |
D140108.1 | SGP/MET/E11/E15/E21/E31/E33/E34/E35/E36/E37/E38/E9 - Ice on wind sensors | sgpmetE15.b1, sgpmetE9.b1 | Suspect |
D140801.3 | SGP/MET/E9 - Rain gauge clogged | sgpmetE9.b1 | Suspect |
D151201.2 | SGP ALL INSTRUMENTS - Icing Event | sgpmetE15.b1, sgpmetE9.b1 | Does not affect quality |
D160104.7 | SGP Site Power Outage Due to Winter Storm | sgpmetE15.b1 | Does not affect quality |
D160203.2 | SGP/MET/E9 - False tips in high winds | sgpmetE9.b1 | Does not affect quality |
D160203.5 | SGP/MET/E15 - False tips in high winds | sgpmetE15.b1 | Does not affect quality |
D160411.3 | SGP/MET/E9 - Wind sensor malfunction | sgpmetE9.b1 | Does not affect quality |
D160802.4 | SGP/MET/E15 - Tipping bucket rain gauge clogged | sgpmetE15.b1 | Incorrect |
D160909.5 | SGP/MET/E15 - No precipitation recorded | sgpmetE15.b1 | Incorrect |
D160930.2 | SGP/MET/E9 - Bad battery | sgpmetE9.b1 | Missing |
D161118.3 | SGP/MET/E9 - Tipping bucket under-reporting precipitation | sgpmetE9.b1 | Incorrect |
D170123.1 | SGP/MET/E11/E13/E15/E21/E31/E32/E33/E34/E35/E36/E37/E38/E39/E40/E41/E9 - Ice storm affected winds | sgpmetE15.b1, sgpmetE9.b1 | Incorrect |
D170209.5 | SGP/EBBR/MET/SWATS/E9 - Incorrect Timestamp | sgpmetE9.b1 | Incorrect |
D170221.5 | SGP/MET/STAMP/All - Freezing Rain Event | sgpmetE15.b1, sgpmetE9.b1 | Does not affect quality |
D170306.3 | SGP/MET/E9 - Incorrect Value | sgpmetE9.b1 | Incorrect |
D170320.1 | SGP/MET/E9 - Temperature occasionally failed 6-month field calibration checks | sgpmetE9.b1 | Suspect |
D170321.10 | SGP/MET/E15 - Temperature/humidity sensor occasionally failed 6-month field calibration checks | sgpmetE15.b1 | Suspect |
D170321.11 | SGP/MET/E15 - Temperature/humidity sensor failed a field calibration check | sgpmetE15.b1 | Suspect |
D170322.1 | SGP/MET/E15 - Temperature/humidity sensor failed a field calibration check | sgpmetE15.b1 | Suspect |
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
11/25/2009 | 1733 | 12/10/2009 | 2121 | Incorrect |
Subject: | SGP/MET/E9 - Wind Speed Data Incorrect |
DataStreams: | sgpmetE9.b1 |
Description: | Wind speed sensor reference wire became detached. This caused all wind sensor data to report near 0 m/s. |
Measurements: | sgpmetE9.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
05/03/2010 | 0000 | 05/07/2010 | 0215 | Incorrect |
Subject: | SGP/MET/E9 - Time-stamp uncertainty |
DataStreams: | sgpmetE9.b1 |
Description: | Between 20100503 and 20100507 the sgp.E9 instruments (EBBR, MET, SIRS, SWATS) time clocks were drifting outside the allowable +/-3 seconds. During the specified period, the swings ranged from -326 to +637 seconds. |
Measurements: | sgpmetE9.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
11/08/2011 | 1550 | 11/09/2011 | 0701 | Incorrect |
Subject: | SGP/MET/E9 - RH probe failure |
DataStreams: | sgpmetE9.b1 |
Description: | The T/RH probe failed. The resulting problem led to very unreasonable values of RH (~160%) which caused the vapor pressure values to also be incorrect. |
Measurements: | sgpmetE9.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
12/21/2013 | 0000 | 12/25/2013 | 2359 | Suspect |
Subject: | SGP/MET/E11/E15/E21/E31/E33/E34/E35/E36/E37/E38/E9 - Ice on wind sensors |
DataStreams: | sgpmetE15.b1, sgpmetE9.b1 |
Description: | Wind data was affected by ice buildup on the sensors. Data during this period should be used with caution. Exact times of sensor thaw are unknown. |
Measurements: | sgpmetE9.b1:
sgpmetE15.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
06/02/2014 | 0000 | 06/18/2014 | 1805 | Suspect |
Subject: | SGP/MET/E9 - Rain gauge clogged |
DataStreams: | sgpmetE9.b1 |
Description: | The tipping bucket rain gauge was found to be clogged during bi-weekly maintenance. Precipitation data during this time may be suspect. |
Measurements: | sgpmetE9.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
11/27/2015 | 0000 | 11/30/2015 | 2359 | Does not affect quality |
Subject: | SGP ALL INSTRUMENTS - Icing Event |
DataStreams: | sgpmetE15.b1, sgpmetE9.b1 |
Description: | An icing event (winter storm Cara) passed slowly through the area during this time frame. Instruments at the SGP may have been affected by ice accumulation. |
Measurements: | sgpmetE9.b1:
sgpmetE15.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
12/26/2015 | 0000 | 01/01/2016 | 2359 | Does not affect quality |
Subject: | SGP Site Power Outage Due to Winter Storm |
DataStreams: | sgpmetE15.b1 |
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: | sgpmetE15.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
06/29/1993 | 0000 | 02/01/2016 | 2038 | Does not affect quality |
Subject: | SGP/MET/E9 - False tips in high winds |
DataStreams: | sgpmetE9.b1 |
Description: | The TBRG's were mounted at a height that made them prone to vibrations caused by high winds which may have caused false tips. The end date of this DQR indicates when the rain gauge was lowered to mitigate these effects. Effects on the total precipitation amounts are assumed to be negligible. |
Measurements: | sgpmetE9.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
07/13/1993 | 0000 | 01/15/2016 | 1628 | Does not affect quality |
Subject: | SGP/MET/E15 - False tips in high winds |
DataStreams: | sgpmetE15.b1 |
Description: | The TBRG's were mounted at a height that made them prone to vibrations caused by high winds which may have caused false tips. The end date of this DQR indicates when the rain gauge was lowered to mitigate these effects. Effects on the total precipitation amounts are assumed to be negligible. |
Measurements: | sgpmetE15.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
03/12/2016 | 1201 | 04/06/2016 | 1510 | Does not affect quality |
Subject: | SGP/MET/E9 - Wind sensor malfunction |
DataStreams: | sgpmetE9.b1 |
Description: | Loose wire contacts and possible bad bearings caused intermittent wind data dropouts during this time. |
Measurements: | sgpmetE9.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
05/13/2016 | 0000 | 05/23/2016 | 2359 | Incorrect |
Subject: | SGP/MET/E15 - Tipping bucket rain gauge clogged |
DataStreams: | sgpmetE15.b1 |
Description: | During maintenance rounds, debris was found clogging the rain gauge funnel. |
Measurements: | sgpmetE15.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
08/26/2016 | 0000 | 08/26/2016 | 2359 | Incorrect |
08/29/2016 | 0000 | 08/29/2016 | 2359 | Incorrect |
Subject: | SGP/MET/E15 - No precipitation recorded |
DataStreams: | sgpmetE15.b1 |
Description: | For an unknown reason, the tipping bucket rain gauge did not record precipitation events. |
Measurements: | sgpmetE15.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
10/18/2016 | 1404 | 10/19/2016 | 1629 | Missing |
09/17/2016 | 2001 | 09/18/2016 | 2002 | Missing |
09/18/2016 | 2043 | 09/20/2016 | 2146 | Missing |
10/19/2016 | 1832 | 10/20/2016 | 1834 | Missing |
09/06/2016 | 1507 | 09/09/2016 | 1513 | Missing |
09/15/2016 | 2135 | 09/16/2016 | 2137 | Missing |
09/10/2016 | 0719 | 09/10/2016 | 0719 | Missing |
08/30/2016 | 1504 | 08/31/2016 | 1506 | Missing |
Subject: | SGP/MET/E9 - Bad battery |
DataStreams: | sgpmetE9.b1 |
Description: | A faulty battery caused periodic missing data. |
Measurements: | sgpmetE9.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
09/24/2016 | 0000 | 10/21/2016 | 1800 | Incorrect |
Subject: | SGP/MET/E9 - Tipping bucket under-reporting precipitation |
DataStreams: | sgpmetE9.b1 |
Description: | A power issue caused the tipping bucket to under-report or neglect to report precipitation during this time. |
Measurements: | sgpmetE9.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
01/14/2017 | 0000 | 01/16/2017 | 2359 | Incorrect |
Subject: | SGP/MET/E11/E13/E15/E21/E31/E32/E33/E34/E35/E36/E37/E38/E39/E40/E41/E9 - Ice storm |
DataStreams: | sgpmetE15.b1, sgpmetE9.b1 |
Description: | An ice storm impaired the wind sensor mechanics during this time. At most sites, winds flatlined for a large part of 1/15. Data from 1/14 - 1/16 may not be accurate. |
Measurements: | sgpmetE9.b1:
sgpmetE15.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
04/22/2009 | 1600 | 04/24/2009 | 1606 | Incorrect |
Subject: | SGP/EBBR/MET/SWATS/E9 - Incorrect Timestamp |
DataStreams: | sgpmetE9.b1 |
Description: | The data collection computer lost communication with GPS for the affected time period at this site. The instrument time is not correct causing the data to be up to 30 minutes behind actual time by the end of the affected time period. The time shift is not linear and no known time correction could be applied to the affected data streams. |
Measurements: | sgpmetE9.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
01/13/2017 | 1000 | 01/16/2017 | 1200 | Does not affect quality |
Subject: | SGP/MET/STAMP/All - Freezing Rain Event |
DataStreams: | sgpmetE15.b1, sgpmetE9.b1 |
Description: | A freezing rain event potentially affected some of the STAMP and MET tipping bucket rain gauges. The rain accumulation amounts generally agree (2 exceptions noted below) but the timing and rate of precipitation may disagree at times between the STAMP and MET. Instruments at E33 and E39 were found to differ more than the expected uncertainty and will be covered in additional DQRs if a problem is found. |
Measurements: | sgpmetE9.b1:
sgpmetE15.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
05/13/1999 | 1510 | 05/13/1999 | 1515 | Incorrect |
Subject: | SGP/MET/E9 - Incorrect Value |
DataStreams: | sgpmetE9.b1 |
Description: | MET was dropping out during this period and erroneous values were recorded when it came back online. |
Measurements: | sgpmetE9.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
11/04/2003 | 0000 | 02/06/2007 | 2359 | Suspect |
Subject: | SGP/MET/E9 - Temperature occasionally failed 6-month field calibration checks |
DataStreams: | sgpmetE9.b1 |
Description: | The temperature/humidity sensor was not calibrated annually during this time. The temperature reading failed the 6-month field calibration check four times during this period. Upon removal, the field calibration check reported the temperature sensor may have been reading high (< 1 deg C). In general, the relative humidity may have been subject to drift during this time. The manufacturer characterizes sensor drift at <1% / year. |
Measurements: | sgpmetE9.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
10/17/2000 | 0000 | 03/04/2003 | 2359 | Suspect |
Subject: | SGP/MET/E15 - Temperature/humidity sensor occasionally failed 6-month field calibration |
DataStreams: | sgpmetE15.b1 |
Description: | The temperature/humidity sensor was not calibrated annually during this time. The temperature/humidity readings failed the 6-month field calibration check two times during this period (temperature read low, humidity read high). In general, the relative humidity may have been subject to drift during this time. The manufacturer characterizes sensor drift at <1% / year. |
Measurements: | sgpmetE15.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
04/25/2006 | 0000 | 02/13/2007 | 2359 | Suspect |
Subject: | SGP/MET/E15 - Temperature/humidity sensor failed a field calibration check |
DataStreams: | sgpmetE15.b1 |
Description: | The temperature sensor failed a 6-month field calibration check during this period (temperature read high). Upon removal, the field calibration check reported the temperature reading was high, and the humidity reading was low. |
Measurements: | sgpmetE15.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
10/10/2007 | 0000 | 04/07/2009 | 2359 | Suspect |
Subject: | SGP/MET/E15 - Temperature/humidity sensor failed a field calibration check |
DataStreams: | sgpmetE15.b1 |
Description: | The temperature/humidity sensor failed a 6-month field calibration check during this time (temperature reading low). The relative humidity was noted reading high in near-saturation conditions. |
Measurements: | sgpmetE15.b1:
|