DQR ID | Subject | Data Streams Affected |
---|---|---|
D030917.21 | SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problems | sgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1, sgpthwapsB5.00, sgpthwapsB5.a1, sgpthwapsB5.b1, sgpthwapsB6.00, sgpthwapsB6.a1, sgpthwapsB6.b1, sgpthwapsC1.00, sgpthwapsC1.a1, sgpthwapsC1.b1 |
D050209.14 | SGP/THWAPS/B1 - Wind Data Suspect | sgpthwapsB1.b1 |
D050813.1 | SGP/THWAPS/B1 - Minor bias in humidity | sgpthwapsB1.a1, sgpthwapsB1.b1 |
D050813.2 | SGP/THWAPS/B1 - Minor bias in saturation vapor pressure | sgpthwapsB1.b1 |
D080116.19 | SGP/THWAPS/B1 - Wind Data Incorrect Due to Icing | sgpthwapsB1.b1 |
D080116.20 | SGP/THWAPS/B1 - T/RH Data Incorrect | sgpthwapsB1.b1 |
D991008.2 | SGP/THWAPS - RH low by factor of 1.1 | sgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/09/2002 | 2055 | 03/11/2002 | 2005 |
03/13/2002 | 1755 | 03/14/2002 | 1505 |
Subject: | SGP/THWAPS/B1/B5/B6/C1 - Missing data due to Ice storm and clock problems |
DataStreams: | sgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1, sgpthwapsB5.00, sgpthwapsB5.a1, sgpthwapsB5.b1, sgpthwapsB6.00, sgpthwapsB6.a1, sgpthwapsB6.b1, sgpthwapsC1.00, sgpthwapsC1.a1, sgpthwapsC1.b1 |
Description: | Data are missing due to power failures caused by an ice storm and resulting system/instrument clock problems. |
Measurements: | sgpthwapsC1.a1:
sgpthwapsB1.b1:
sgpthwapsB5.00:
sgpthwapsB6.00:
sgpthwapsB6.a1:
sgpthwapsB5.b1:
sgpthwapsC1.00:
sgpthwapsB1.a1:
sgpthwapsC1.b1:
sgpthwapsB1.00:
sgpthwapsB6.b1:
sgpthwapsB5.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/03/2005 | 0000 | 01/09/2005 | 2359 |
Subject: | SGP/THWAPS/B1 - Wind Data Suspect |
DataStreams: | sgpthwapsB1.b1 |
Description: | Wind speed and direction data suspect during time period due to icing. |
Measurements: | sgpthwapsB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/21/1999 | 0000 | 12/07/1999 | 1800 |
Subject: | SGP/THWAPS/B1 - Minor bias in humidity |
DataStreams: | sgpthwapsB1.a1, sgpthwapsB1.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: | sgpthwapsB1.b1:
sgpthwapsB1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/21/1999 | 0000 | 08/01/2005 | 2034 |
Subject: | SGP/THWAPS/B1 - Minor bias in saturation vapor pressure |
DataStreams: | sgpthwapsB1.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: | sgpthwapsB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/10/2007 | 2050 | 12/11/2007 | 2213 |
Subject: | SGP/THWAPS/B1 - Wind Data Incorrect Due to Icing |
DataStreams: | sgpthwapsB1.b1 |
Description: | An ice storm caused the wind data from the RM Young wind sensor to be incorrect. In many instances it was frozen and unmoving, at times it measured values but those are extremely suspect. |
Measurements: | sgpthwapsB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/16/2007 | 2306 | 12/20/2007 | 1806 |
Subject: | SGP/THWAPS/B1 - T/RH Data Incorrect |
DataStreams: | sgpthwapsB1.b1 |
Description: | The T/RH data was incorrect during the listed time period. Reason unknown. The sensor recovered on it's own. |
Measurements: | sgpthwapsB1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/28/1999 | 1345 | 10/14/1999 | 1440 |
Subject: | SGP/THWAPS - RH low by factor of 1.1 |
DataStreams: | sgpthwapsB1.00, sgpthwapsB1.a1, sgpthwapsB1.b1 |
Description: | Because of instrument mentor stupidity, all B1 TWHAPS RH values collected since the specified being date are low by a factor of 1.1. This problem also will affect the vapor pressure values in the file, but the scaling will not be linear. See companion DQR for THWAPS C1 for more detail. |
Measurements: | sgpthwapsB1.b1:
sgpthwapsB1.a1:
sgpthwapsB1.00:
|