DQR ID | Subject | Data Streams Affected | Data Quality Metric |
---|---|---|---|
D020313.1 | SGP/THWAPS/C1 - THWAPS C1 miscalibrated | sgpthwapsC1.b1 | Incorrect |
D030917.21 | SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problems | sgpthwapsC1.b1 | Missing |
D041123.1 | SGP/THWAPS/C1 - RH Sensor Calibration | sgpthwapsC1.b1 | Incorrect |
D050812.10 | SGP/THWAPS/C1 - Minor bias in humidity | sgpthwapsC1.b1 | Does not affect quality |
D050812.12 | SGP/THWAPS/C1 - Minor bias in saturation vapor pressure | sgpthwapsC1.b1 | Does not affect quality |
D080116.24 | SGP/THWAPS/C1 - RH Data Incorrect | sgpthwapsC1.b1 | Incorrect |
D090211.2 | SGP/THWAPS/C1 - Barometer intermittent | sgpthwapsC1.b1 | Suspect |
D090306.1 | SGP/THWAPS/C1 - Time stamp of data record incorrect | sgpthwapsC1.b1 | Incorrect |
D090824.2 | SGP/THWAPS/C1 - Wind speed incorrect | sgpthwapsC1.b1 | Incorrect |
D130711.1 | SGP/THWAPS/C1 - T/RH sensor failure | sgpthwapsC1.b1 | Incorrect |
D131106.3 | SGP/THWAPS/C1 - RH too high | sgpthwapsC1.b1 | Suspect |
D131205.2 | SGP/THWAPS/C1 - Incorrect T/RH data | sgpthwapsC1.b1 | Incorrect |
D991008.1 | SGP/THWAPS - RH values low by factor of 1.1 | sgpthwapsC1.b1 | Incorrect |
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
03/09/2002 | 0340 | 04/23/2002 | 1418 | Incorrect |
Subject: | SGP/THWAPS/C1 - THWAPS C1 miscalibrated |
DataStreams: | sgpthwapsC1.b1 |
Description: | Power outages apparently led to the THWAPS HMP233 temperature and RH sensor being replaced at C1. The power went out at 0340 on 3/9 was restored at 0635 and went out again at 2025. The new HMP233 appears to be incorrectly calibrated and all temperature data since its installation are wrong. If I am correct about the nature of the calibration problem, the true average temperature can be recovered from that recorded by a linear conversion, but I don't think its worth the trouble. |
Measurements: | sgpthwapsC1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
03/09/2002 | 2055 | 03/11/2002 | 2005 | Missing |
03/13/2002 | 1755 | 03/14/2002 | 1505 | Missing |
Subject: | SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problems |
DataStreams: | sgpthwapsC1.b1 |
Description: | Data are missing due to power failures caused by an ice storm and resulting system/instrument clock problems. |
Measurements: | sgpthwapsC1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
11/16/2004 | 2135 | 11/29/2004 | 1930 | Incorrect |
Subject: | SGP/THWAPS/C1 - RH Sensor Calibration |
DataStreams: | sgpthwapsC1.b1 |
Description: | The analog output for the T/RH probe was incorrectly calibrated. This caused excessively high readings of RH. |
Measurements: | sgpthwapsC1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
09/21/1999 | 0000 | 12/07/1999 | 1100 | Does not affect quality |
Subject: | SGP/THWAPS/C1 - Minor bias in humidity |
DataStreams: | sgpthwapsC1.b1 |
Description: | The THWAPS humidity sensor output was scaled so that the instrument output voltage range (0-1VDC) represented 0-100 %RH. Comparisons with the co-located chilled mirror sensor at the CF suggested that the THWAPS RH sensor was reading artifically low at high humidities because of this 100 %RH maximum. The scaling of the system was changed so that 0-1 VDC now represents 0-110 %RH. This resulted in a slight loss of precision in the measurements, but since the RH measurement is only accurate to 2-3 %RH at best, this isn't a significant problem. |
Measurements: | sgpthwapsC1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
09/21/1999 | 0000 | 08/10/2005 | 1445 | Does not affect quality |
Subject: | SGP/THWAPS/C1 - Minor bias in saturation vapor pressure |
DataStreams: | sgpthwapsC1.b1 |
Description: | The saturation vapor correction when temps are below 0C contained an error in the multiplier. The incorrect multiplier only equates to an error of 0.01 kPa which is less than the stated uncertainty of the measurement (+/- 0.035 kPa). |
Measurements: | sgpthwapsC1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
12/22/2007 | 1750 | 12/22/2007 | 2130 | Incorrect |
Subject: | SGP/THWAPS/C1 - RH Data Incorrect |
DataStreams: | sgpthwapsC1.b1 |
Description: | The RH data was incorrect during the times listed. Reason unknown. The sensor recovered on its own. |
Measurements: | sgpthwapsC1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
01/09/2009 | 0000 | 02/13/2009 | 2359 | Suspect |
Subject: | SGP/THWAPS/C1 - Barometer intermittent |
DataStreams: | sgpthwapsC1.b1 |
Description: | Intermittent dropouts on the barometer data were occurring, with data reading low or missing. Loose wiring was the probable culprit. In most instances, only 1 minute of data was missing. Linear interpolation between the last known good point and the first good point following the dropout can be accomplished. |
Measurements: | sgpthwapsC1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
12/09/2008 | 0000 | 01/23/2009 | 2359 | Incorrect |
Subject: | SGP/THWAPS/C1 - Time stamp of data record incorrect |
DataStreams: | sgpthwapsC1.b1 |
Description: | Due to problems with the collector system, the datalogger was being time synched inappropriately. This problem was intermittent and did not affect every time stamp. The worst case time adjustments were approximately +/- 7 minutes. These were infrequent and most of the time adjustments were less than 7 minutes. |
Measurements: | sgpthwapsC1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
07/17/2009 | 0000 | 11/27/2009 | 1745 | Incorrect |
Subject: | SGP/THWAPS/C1 - Wind speed incorrect |
DataStreams: | sgpthwapsC1.b1 |
Description: | The wind sensor was reporting 0 m/s winds for excessive periods of time and appeared to measure lower wind speeds than nearby co-located wind sensors. Sensor was replaced. |
Measurements: | sgpthwapsC1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
06/28/2013 | 0130 | 07/03/2013 | 1510 | Incorrect |
Subject: | SGP/THWAPS/C1 - T/RH sensor failure |
DataStreams: | sgpthwapsC1.b1 |
Description: | Storm damage caused failure of the temperature/humidity sensor. Sensor replaced. |
Measurements: | sgpthwapsC1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
10/23/2013 | 0000 | 11/05/2013 | 2000 | Suspect |
Subject: | SGP/THWAPS/C1 - RH too high |
DataStreams: | sgpthwapsC1.b1 |
Description: | The T/RH sensor was reporting much higher humidity than the sonde station and nearby sensors for some sonde launches. |
Measurements: | sgpthwapsC1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
11/15/2013 | 1650 | 11/18/2013 | 1510 | Incorrect |
Subject: | SGP/THWAPS/C1 - Incorrect T/RH data |
DataStreams: | sgpthwapsC1.b1 |
Description: | There was a power issue with the T/RH sensor. |
Measurements: | sgpthwapsC1.b1:
|
Start Date | Start Time | End Date | End Time | Data Quality Metric |
---|---|---|---|---|
09/27/1999 | 1445 | 10/14/1999 | 2230 | Incorrect |
Subject: | SGP/THWAPS - RH values low by factor of 1.1 |
DataStreams: | sgpthwapsC1.b1 |
Description: | Because of instrument mentor stupidity, all C1 THWAPS RH data collected from the begin date of this DQR are low by a factor of 1.1. This error also will affect the vapor pressure data. The problem is that the CSI data logger is expecting the data to be scaled 0-100%RH on the range 0-1V, but it is now being scaled 0-110%RH on the range 0-1V. |
Measurements: | sgpthwapsC1.b1:
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