DQR ID | Subject | Data Streams Affected |
---|---|---|
D060308.1 | TWP/SONDE/C2 - Broken temperature sensor | twpsondewnpnC2.b1 |
D060403.2 | TWP/SONDE/C2 - Broken temperature sensor | twpsondewnpnC2.b1 |
D060418.1 | TWP/SONDE/C2 - Bad RH in lower 8km | twpsondewnpnC2.b1 |
D060426.8 | TWP/SMET/C3 - ORG data noisy due to degraded ground | twpsmet60sC3.b1 |
D060502.3 | TWP/SMET/C3 - Reprocessed: Lower windspeed sensor calibration error | twpsmet60sC3.b1 |
D060522.1 | TWP/SMET/C1 - Upper wind sensor failure | twpsmet60sC1.b1 |
D060614.2 | TWP/SMET/C2 - Temp/RH probe failure | twpsmet60sC2.b1 |
D060627.1 | TWP/SMET/C3 - Data not representative | twpsmet60sC3.b1 |
D061011.2 | TWP/SMET/C1 - Reprocess: Tipping bucket rain gauge added | twpsmet60sC1.b1 |
D061011.3 | TWP/SMET/C2 - Reprocess: Tipping bucket rain gauge added | twpsmet60sC2.b1 |
D061011.4 | TWP/SMET/C3 - Reprocess: Tipping bucket rain gauge added | twpsmet60sC3.b1 |
D061214.2 | TWP/SMET/C2 - Barometer failure | twpsmet60sC2.b1 |
D070306.2 | TWP/SMET/C3 - Barometer Data Incorrect | twpsmet60sC3.b1 |
D070306.3 | TWP/SMET/C3 - Water in enclosure | twpsmet60sC3.b1 |
D070308.3 | TWP/SONDE/C2 - Surface Temperature Incorrect | twpsondewnpnC2.b1 |
D070308.4 | TWP/SONDE/C2 - Surface RH value incorrect | twpsondewnpnC2.b1 |
D070313.2 | TWP/SONDE/C2 - Surface RH value incorrect | twpsondewnpnC2.b1 |
D070313.3 | TWP/SONDE/C1 - Surface RH value incorrect | twpsondewnpnC1.b1 |
D070329.2 | TWP/SONDE/C2 - Surface RH Value incorrect | twpsondewnpnC2.b1 |
D070404.1 | TWP/SONDE/C2 - Surface RH too high | twpsondewnpnC2.b1 |
D070409.1 | TWP/SMET/C1 - Upper winds failure | twpsmet60sC1.b1 |
D070428.1 | TWP/SONDE/C2 - Broken temperature sensor at launch | twpsondewnpnC2.b1 |
D070501.2 | TWP/SONDE/C2 - Broken temperature sensor at launch | twpsondewnpnC2.b1 |
D070510.5 | TWP/SMET/C2 - Lower windspeed sensor questionable | twpsmet60sC2.b1 |
D070520.1 | TWP/SMET/C2 - Lower Wind Sensor Direction Incorrect | twpsmet60sC2.b1 |
D070803.1 | TWP/SMET/C3 - Upper wind speed artificially slow | twpsmet60sC3.b1 |
D071105.1 | TWP/SMET/C3 - ORG overestimated rainfall | twpsmet60sC3.b1 |
D071219.1 | TWP/SMET/C2 - Lower Wind Speed Data Suspect | twpsmet60sC2.b1 |
D080225.1 | TWP/SMET/C3 - Upper Wind Sensor Data Questionable | twpsmet60sC3.b1 |
D080428.2 | TWP/SMET/C1 - Reprocess: ORG Data has very small rainrate values | twpsmet60sC1.b1 |
D080428.3 | TWP/SMET/C3 - Reprocess: ORG Data has very small rainrate values | twpsmet60sC3.b1 |
D080428.4 | TWP/SMET/C2 - Reprocess: ORG Data has very small rainrate values | twpsmet60sC2.b1 |
D080611.2 | TWP/SMET/C3 - Lower Wind Direction Intermittently Wrong | twpsmet60sC3.b1 |
D080617.1 | TWP/SMET/C2 - ORG rainfall measurements too large | twpsmet60sC2.b1 |
D080707.2 | TWP/SMET/C1 - ORG Precip Data Incorrect | twpsmet60sC1.b1 |
D080715.1 | TWP/SMET/C3 - Upper wind speed data incorrect | twpsmet60sC3.b1 |
D080922.5 | TWP/SMET/C3 - Missing data | twpsmet60sC3.b1 |
D080925.1 | TWP/SONDE/C2 - Bad RH values throughout sounding | twpsondewnpnC2.b1 |
D081022.3 | TWP/SMET/C1 - Wind Speed data contain offset due to induced voltage | twpsmet60sC1.b1 |
D081022.5 | TWP/SMET/C2 - Wind Speed data contain offset due to induced voltage | twpsmet60sC2.b1 |
D081022.8 | TWP/SMET/C3 - Wind Speed data contain offset due to induced voltage | twpsmet60sC3.b1 |
D081027.2 | TWP/SMET/C2 - ORG rainrate high due to calibration. | twpsmet60sC2.b1 |
D081114.1 | TWP/SONDE/C2 - Defective Temperature Sensor | twpsondewnpnC2.b1 |
D090129.4 | TWP/SMET/C3 - Reprocess: Station Pressure values reported in hPa instead of kPa. | twpsmet60sC3.b1 |
D090224.4 | TWP/SONDE/C2 - Suspect RH values | twpsondewnpnC2.b1 |
D090304.1 | TWP/SMET/C1 - Optical Rain Gage Inoperative | twpsmet60sC1.b1 |
D090515.1 | TWP/SMET/C3 - Reprocess: Temperature Biased low by 1.06 Degrees | twpsmet60sC3.b1 |
D090604.2 | TWP/SMET/C2 - Barometer data incorrect | twpsmet60sC2.b1 |
D090629.3 | TWP/SONDE/C1 - Wind data missing | twpsondewnpnC1.b1 |
D090629.4 | TWP/SONDE/C2 - Wind data missing | twpsondewnpnC2.b1 |
D090708.1 | TWP/SMET/C1 - Reprocess: Barometric pressure data scaled incorrectly | twpsmet60sC1.b1 |
D090918.1 | TWP/SMET/C2 - Induced wind speed when calm | twpsmet60sC2.b1 |
D091023.1 | TWP/SMET/C3 - Tower Lowered for Maintenance | twpsmet60sC3.b1 |
D091030.2 | TWP/SMET/C2 - Tower Lowered for Maintenance | twpsmet60sC2.b1 |
D100303.3 | TWP/SMET/C2 - Barometer failure | twpsmet60sC2.b1 |
D100603.1 | TWP/SMET/C1 - Missing RH, Barometer, and ORG data | twpsmet60sC1.b1 |
D110105.1 | TWP/SMET/C1 - Aux (lower) wind sensor failed | twpsmet60sC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/15/2006 | 1144 | 01/15/2006 | 1328 |
01/19/2006 | 1318 | 01/19/2006 | 1320 |
01/22/2006 | 1149 | 01/22/2006 | 1315 |
02/14/2006 | 0055 | 02/14/2006 | 0207 |
02/21/2006 | 0232 | 02/21/2006 | 0359 |
Subject: | TWP/SONDE/C2 - Broken temperature sensor |
DataStreams: | twpsondewnpnC2.b1 |
Description: | The temperature sensor on this radiosonde broke after launch. All the temperature-related data are incorrect. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/27/2006 | 0043 | 03/27/2006 | 0208 |
Subject: | TWP/SONDE/C2 - Broken temperature sensor |
DataStreams: | twpsondewnpnC2.b1 |
Description: | The temperature sensor on this radiosonde broke after launch. All the temperature-related data are incorrect. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/10/2006 | 0247 | 04/10/2006 | 0314 |
Subject: | TWP/SONDE/C2 - Bad RH in lower 8km |
DataStreams: | twpsondewnpnC2.b1 |
Description: | It appears that the RH sensor heating circuit failed during this sounding. The RH oscillates rapidly between low (~0 %RH) and not so low (ambient %RH) and the oscillation seems to stop when the temperature is below ~35 degC. According to Vaisala these are symptoms of failure in the ASIC (application specific integrated circuit) that controls the heating. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/2005 | 0000 | 08/24/2006 | 2359 |
Subject: | TWP/SMET/C3 - ORG data noisy due to degraded ground |
DataStreams: | twpsmet60sC3.b1 |
Description: | SMET Rain Data began to be noisy during December 2005 and the problem slowly became worse over time so that in February 2006 the ORG was reporting with a constant background value of around 0.10 mm/hr rain rate. ORG voltage showed a near constant value above the 85mV threshold. The ground for the ORG had become degraded and was lost due to corrosion. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/27/2006 | 2330 | 05/02/2006 | 0201 |
Subject: | TWP/SMET/C3 - Reprocessed: Lower windspeed sensor calibration error |
DataStreams: | twpsmet60sC3.b1 |
Description: | The lower anemometer was replaced but the calibration coefficients were not changed during this period. The data were reprocessed to apply the correct calibrations and the reprocessed data were archived in August 2008. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/09/2006 | 0000 | 10/14/2006 | 0237 |
Subject: | TWP/SMET/C1 - Upper wind sensor failure |
DataStreams: | twpsmet60sC1.b1 |
Description: | The upper wind speed sensor was binding at low wind speeds. Comparison to the lower wind sensor showed that the upper sensor flat-lines for long periods of time. The upper anemometer was replaced. |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/05/2006 | 2144 | 06/15/2006 | 0427 |
Subject: | TWP/SMET/C2 - Temp/RH probe failure |
DataStreams: | twpsmet60sC2.b1 |
Description: | Temperature/RH probe failed and was replaced. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/27/2006 | 0115 | 06/27/2006 | 0344 |
Subject: | TWP/SMET/C3 - Data not representative |
DataStreams: | twpsmet60sC3.b1 |
Description: | The Anemometer readings were incorrect due to the tower being lowered for maintenance. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/1996 | 0000 | 10/17/2006 | 0000 |
Subject: | TWP/SMET/C1 - Reprocess: Tipping bucket rain gauge added |
DataStreams: | twpsmet60sC1.b1 |
Description: | A tipping bucket rain gauge was added to the TWP.C1 SMET suite of instruments on 20061017. Effective 20060926, two new variables (count and rain amount) were added to the end of the twpsmet60sC1.b1 datastream. Between 9/26 and 10/17, the data for these two variables are filled with zeros. Users should not use the data during this period as the zeros are not representative of the rain fall at the site. When reprocessing of this datastream occurs these variables will be added for the 19961009-20060926 and data from 19961009-20061017 will be filled with -9999 (missing). |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/21/1998 | 0000 | 11/29/2006 | 2014 |
Subject: | TWP/SMET/C2 - Reprocess: Tipping bucket rain gauge added |
DataStreams: | twpsmet60sC2.b1 |
Description: | A tipping bucket rain gauge was added to the TWP.C2 SMET suite of instruments on 20061129. Effective 20060926, two new variables (count and rain amount) were added to the end of the twpsmet60sC2.b1 datastream. Between 9/26 and 11/29, the data for these two variables are filled with zeros. Users should not use the data during this period as the zeros are not representative of the rain fall at the site. When reprocessing of this datastream occurs these variables will be added for the 19981021-20060926 and data from 19981021-20061129 will be filled with -9999 (missing). |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/12/2002 | 0000 | 09/26/2006 | 1435 |
Subject: | TWP/SMET/C3 - Reprocess: Tipping bucket rain gauge added |
DataStreams: | twpsmet60sC3.b1 |
Description: | A tipping bucket rain gauge was added to the SMET suite of instruments effective 20060926. Two new variables (count and rain amount) were added at the end of the twpsmet60sC1.b1 datastream. When reprocessing of this datastream occurs these variables will be added with -9999 (missing) as the value for dates prior to gauge installation. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/07/2006 | 1941 | 01/23/2007 | 0023 |
Subject: | TWP/SMET/C2 - Barometer failure |
DataStreams: | twpsmet60sC2.b1 |
Description: | The barometer began experiencing problems with noise resulting in incorrect data. The problem becames worse over time; after 12/19/2006 @0151 GMT the barometer data is completely missing. The barometer was replaced. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/02/2007 | 1723 | 03/03/2007 | 1228 |
Subject: | TWP/SMET/C3 - Barometer Data Incorrect |
DataStreams: | twpsmet60sC3.b1 |
Description: | The barometer data was incorrect or missing due to water intrusion. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/03/2007 | 0056 | 03/03/2007 | 0123 |
Subject: | TWP/SMET/C3 - Water in enclosure |
DataStreams: | twpsmet60sC3.b1 |
Description: | Data became erratic and unreasonable after water intrusion into the enclosure. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/02/2007 | 1128 | 01/02/2007 | 1129 |
Subject: | TWP/SONDE/C2 - Surface Temperature Incorrect |
DataStreams: | twpsondewnpnC2.b1 |
Description: | The first two temperature values in the datafile are incorrect. It appears that the observer mis-typed the surface temperature as -27 instead of +27. The next value was 8 which is also incorrect and was caused by the system interpolating from the incorrect surface value and what the sonde temperature sensor was reading. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/23/2007 | 1130 | 01/23/2007 | 1131 |
Subject: | TWP/SONDE/C2 - Surface RH value incorrect |
DataStreams: | twpsondewnpnC2.b1 |
Description: | The surface RH value was incorrect. It appears the observer mis-typed 70 instead of 80. This error also caused the dew point temperature to be incorrect. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/08/2007 | 2350 | 03/08/2007 | 2353 |
Subject: | TWP/SONDE/C2 - Surface RH value incorrect |
DataStreams: | twpsondewnpnC2.b1 |
Description: | The surface RH was reproted as 78%. The value should have been in the low 50's. It appears the observer did not allow the sonde to equilibrate to ambient conditions before taking the reading. This error also caused an incorrect dew point. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/08/2007 | 0000 | 03/08/2007 | 0001 |
Subject: | TWP/SONDE/C1 - Surface RH value incorrect |
DataStreams: | twpsondewnpnC1.b1 |
Description: | The surface RH value of 77% when the value should have been in the low 60's. It appears the observers did not allow the sonde to equilibrate to ambient conditions before collecting the surface data. This error also caused the dew point to be incorrect. |
Measurements: | twpsondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/28/2007 | 2319 | 03/28/2007 | 2320 |
Subject: | TWP/SONDE/C2 - Surface RH Value incorrect |
DataStreams: | twpsondewnpnC2.b1 |
Description: | The surface value entered by the observers for RH (96%) is incorrect. At the ascent time listed in the .ptu file the readings by the Sonde were around 65%. This low RH value is supported by the nearby SMET tower RH reading of 71.8%. This also caused the surface dew point to be incorrect. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/03/2007 | 2330 | 04/03/2007 | 2331 |
Subject: | TWP/SONDE/C2 - Surface RH too high |
DataStreams: | twpsondewnpnC2.b1 |
Description: | The surface Rh was entered as 94%. The ascent time has 72% and this value is supported by RH values from the nearby SMET system. This error also will affect the dew point. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/19/2007 | 0000 | 06/12/2007 | 0406 |
Subject: | TWP/SMET/C1 - Upper winds failure |
DataStreams: | twpsmet60sC1.b1 |
Description: | The upper wind instrument was inoperative resulting in constant wind direction and speed. A failed cable was replaced. |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/27/2007 | 1140 | 04/27/2007 | 1420 |
Subject: | TWP/SONDE/C2 - Broken temperature sensor at launch |
DataStreams: | twpsondewnpnC2.b1 |
Description: | Temperature sensor broken at launch. All thermodynamic values are incorrect. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/30/2007 | 2359 | 05/01/2007 | 0200 |
Subject: | TWP/SONDE/C2 - Broken temperature sensor at launch |
DataStreams: | twpsondewnpnC2.b1 |
Description: | The temperature sensor on this radiosonde broke after launch. All the temperature-related data are incorrect. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/05/2007 | 0000 | 08/19/2007 | 2135 |
Subject: | TWP/SMET/C2 - Lower windspeed sensor questionable |
DataStreams: | twpsmet60sC2.b1 |
Description: | Lower wind speed sensor had degraded bearings. This sensor was reporting as much as 0.4 m/s lower values than the upper sensors when the winds were 2 m/s or below. The sensor was replaced. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/11/2007 | 0000 | 05/22/2007 | 0047 |
Subject: | TWP/SMET/C2 - Lower Wind Sensor Direction Incorrect |
DataStreams: | twpsmet60sC2.b1 |
Description: | Wind directions between lower and upper anemometers were displaced by approximately 45 degrees when a new sensor was installed to replace the failing lower winde sensor. The new sensor direction data incorrect. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2007 | 0000 | 09/18/2007 | 2315 |
Subject: | TWP/SMET/C3 - Upper wind speed artificially slow |
DataStreams: | twpsmet60sC3.b1 |
Description: | The upper wind measurement was consistently slower by around 0.5 - 1 m/s than the lower wind measurement. The bearings on the upper wind measurement were binding. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/02/2007 | 1855 | 11/02/2007 | 2010 |
Subject: | TWP/SMET/C3 - ORG overestimated rainfall |
DataStreams: | twpsmet60sC3.b1 |
Description: | Optical rain gauge (ORG) measured approximately 10mm higher than two co-located tipping bucket rain gauges and a co-located disdrometer. The ORG is typically higher but usually not by an order of magnitude. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/22/2007 | 0048 | 08/19/2007 | 2150 |
Subject: | TWP/SMET/C2 - Lower Wind Speed Data Suspect |
DataStreams: | twpsmet60sC2.b1 |
Description: | The lower wind speed bearings appeared to be binding at speeds below 2 m/s as it did not compare well with the upper wind sensor. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/05/2008 | 0000 | 02/27/2008 | 0315 |
Subject: | TWP/SMET/C3 - Upper Wind Sensor Data Questionable |
DataStreams: | twpsmet60sC3.b1 |
Description: | The wind_up vs. wind_low wind directions diverged, with the differences between the two eventually reached 45 degrees. The Upper sensor was found to be mis-aligned and loose. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/01/2004 | 0000 | 06/30/2010 | 2359 |
Subject: | TWP/SMET/C1 - Reprocess: ORG Data has very small rainrate values |
DataStreams: | twpsmet60sC1.b1 |
Description: | The ORG data is collected via analog signal and not digital. Therefore, we continuously collect data even when no rain is occurring. We also capture small events such as leaves, large bugs, dust, etc blowing through the measurement path. Because this discrete event occurs quickly the value is usually captured for 1 or 2 seconds. This value is then averaged to the minute producing rainrate on the order of .009 mm/hr or less. These values are not indicative of rain and should be removed from the record or summing over long periods can bias the climate record. We are reprocessing the data to remove these small values and are adjusting the collection program to remove them before ingest. |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/01/2004 | 0000 | 06/30/2010 | 2359 |
Subject: | TWP/SMET/C3 - Reprocess: ORG Data has very small rainrate values |
DataStreams: | twpsmet60sC3.b1 |
Description: | The ORG data is collected via analog signal and not digital. Therefore, we continuously collect data even when no rain is occurring. We also capture small events such as leaves, large bugs, dust, etc blowing through the measurement path. Because this discrete event occurs quickly the value is usually captured for 1 or 2 seconds. This value is then averaged to the minute producing rainrate on the order of .009 mm/hr or less. These values are not indicative of rain and should be removed from the record or summing over long periods can bias the climate record. We will reprocess the data to remove these small values. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2004 | 0000 | 06/30/2010 | 2359 |
Subject: | TWP/SMET/C2 - Reprocess: ORG Data has very small rainrate values |
DataStreams: | twpsmet60sC2.b1 |
Description: | The ORG data is collected via analog signal and not digital. Therefore, we continuously collect data even when no rain is occurring. We also capture small events such as leaves, large bugs, dust, etc blowing through the measurement path. Because this discrete event occurs quickly the value is usually captured for 1 or 2 seconds. This value is then averaged to the minute producing rainrate on the order of .009 mm/hr or less. These values are not indicative of rain and should be removed from the record or summing over long periods can bias the climate record. We will reprocess the data to remove these small values. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/27/2008 | 1945 | 06/24/2008 | 0113 |
Subject: | TWP/SMET/C3 - Lower Wind Direction Intermittently Wrong |
DataStreams: | twpsmet60sC3.b1 |
Description: | The lower wind sensor cabling had a problem causing an intermittent connection for the wind direction data. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/08/2008 | 0000 | 08/07/2008 | 2300 |
Subject: | TWP/SMET/C2 - ORG rainfall measurements too large |
DataStreams: | twpsmet60sC2.b1 |
Description: | The ORG was collecting large amounts of rainfall compared to the co-located tipping bucket raingauge. The cable was chewed by mice causing the wires to make contact intermittently mimicking rainfall. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/07/2008 | 1300 | 02/09/2008 | 0600 |
Subject: | TWP/SMET/C1 - ORG Precip Data Incorrect |
DataStreams: | twpsmet60sC1.b1 |
Description: | Moisture intrusion into the sensor body allowed condensation on the lens of the ORG. Continual and long-term precipitation was reported during this time. |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/08/2008 | 2045 | 07/17/2008 | 0144 |
Subject: | TWP/SMET/C3 - Upper wind speed data incorrect |
DataStreams: | twpsmet60sC3.b1 |
Description: | Beginning on 07/08, the upper wind sensor started reporting significantly lower wind speeds than the lower wind sensor. The cable connections weather proofing failed allowing corrosion to occur and increasing he resistance of the cables. This in turn lowered the wind speeds artificially. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/17/2004 | 2202 | 05/19/2004 | 0559 |
04/23/2006 | 2357 | 04/27/2006 | 0348 |
Subject: | TWP/SMET/C3 - Missing data |
DataStreams: | twpsmet60sC3.b1 |
Description: | Data are missing and unrecoverable. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/08/2008 | 1145 | 09/08/2008 | 1145 |
Subject: | TWP/SONDE/C2 - Bad RH values throughout sounding |
DataStreams: | twpsondewnpnC2.b1 |
Description: | RH values fluctuate largely in a stepping function throughout the sounding. Suspect bad RH sensors. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/1996 | 0000 | 11/03/2008 | 0730 |
Subject: | TWP/SMET/C1 - Wind Speed data contain offset due to induced voltage |
DataStreams: | twpsmet60sC1.b1 |
Description: | The marine model of the RM Young wind sensor needs twisted pair shielded cable. The manufacturer did not originally supply the pigtail with twisted pair shielded cable. Use of twisted pair shielded cable for the rest of the cable run to the logger was also not specified. This caused an induced voltage in the wind speed line from the wind direction excitation. The induced voltage varied from sensor to sensor and probably changed anytime the cable was replaced or parts of the wind sensor were repaired or replaced. The induced voltage has been seen to vary from 0.15 m/s to as much as 1.08 m/s. |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/1998 | 0000 | 02/23/2009 | 0410 |
Subject: | TWP/SMET/C2 - Wind Speed data contain offset due to induced voltage |
DataStreams: | twpsmet60sC2.b1 |
Description: | The marine model of the RM Young wind sensor needs twisted pair shielded cable. The manufacturer did not originally supply the pigtail with twisted pair shielded cable. Use of twisted pair shielded cable for the rest of the cable run to the logger was also not specified. This caused an induced voltage in the wind speed line from the wind direction excitation. The induced voltage varied from sensor to sensor and probably changed anytime the cable was replaced or parts of the wind sensor were repaired or replaced. The induced voltage has been seen to vary from 0.15 m/s to as much as 1.08 m/s. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/12/2002 | 0000 | 10/17/2008 | 0627 |
Subject: | TWP/SMET/C3 - Wind Speed data contain offset due to induced voltage |
DataStreams: | twpsmet60sC3.b1 |
Description: | The marine model of the RM Young wind sensor needs twisted pair shielded cable. The manufacturer did not originally supply the pigtail with twisted pair shielded cable. Use of twisted pair shielded cable for the rest of the cable run to the logger was also not specified. This caused an induced voltage in the wind speed line from the wind direction excitation. The induced voltage varied from sensor to sensor and probably changed anytime the cable was replaced or parts of the wind sensor were repaired or replaced. The induced voltage has been seen to vary from 0.15 m/s to as much as 1.08 m/s. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/05/2008 | 2311 | 10/05/2008 | 2344 |
Subject: | TWP/SMET/C2 - ORG rainrate high due to calibration. |
DataStreams: | twpsmet60sC2.b1 |
Description: | The rainrate from the ORG was high due to calibration. This data is not real. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/04/2008 | 1145 | 11/04/2008 | 1145 |
Subject: | TWP/SONDE/C2 - Defective Temperature Sensor |
DataStreams: | twpsondewnpnC2.b1 |
Description: | Temperature sensor shows a +30C offset for duration of flight. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/27/2009 | 1850 | 01/30/2009 | 1535 |
Subject: | TWP/SMET/C3 - Reprocess: Station Pressure values reported in hPa instead of kPa. |
DataStreams: | twpsmet60sC3.b1 |
Description: | An incorrect program was entered into the datalogger. This program did not convert the station pressure from hPa to kPa. This made the values larger by a factor of 10 and caused the QC bit to be tripped. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/08/2009 | 2331 | 01/08/2009 | 2331 |
Subject: | TWP/SONDE/C2 - Suspect RH values |
DataStreams: | twpsondewnpnC2.b1 |
Description: | RH values only are suspect for the duration of this radiosonde flight, exhibiting a "sawtooth" pattern. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/07/2009 | 0100 | 04/03/2009 | 0225 |
Subject: | TWP/SMET/C1 - Optical Rain Gage Inoperative |
DataStreams: | twpsmet60sC1.b1 |
Description: | Beginning on 02/07/2009, the trending between the TBRG and ORG began to look poor, one recording precip when the other was not and vice versa. After a while the ORG quit registering any precip at all. ORG was replaced. |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/19/2005 | 0420 | 04/04/2009 | 0115 |
Subject: | TWP/SMET/C3 - Reprocess: Temperature Biased low by 1.06 Degrees |
DataStreams: | twpsmet60sC3.b1 |
Description: | The temperature of the SMET system was biased low by 1.06 Deg C due to a non-precision resistor being used int he measurement circuit. The data will be reprocessed. Saturation Vapor pressure and Vapor pressure will have to be reprocessed also. Add 1.06 degrees to the temperature data. Correct Sat Vap Press using the Buck approximation: Es = 6.1121exp((17.502*T)/(240.97 + T) where T is the temperature in C. Correct Vapor pressure using: E = (RH*Es)/100 |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/20/2009 | 0004 | 06/05/2009 | 2359 |
Subject: | TWP/SMET/C2 - Barometer data incorrect |
DataStreams: | twpsmet60sC2.b1 |
Description: | Beginning 05/20, atmos_pressure exceeded MAX between ~21:00 and 01:00 UTC on most days. The inlet tube was accidentally pinched in the door of the logger enclosure artificially increasing the atmospheric pressure during the listed times. Only a few hours exceeded max limits. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/21/2009 | 1100 | 06/24/2009 | 1100 |
Subject: | TWP/SONDE/C1 - Wind data missing |
DataStreams: | twpsondewnpnC1.b1 |
Description: | A GPS problem associated with Vaisala BBSS ground station software issues caused the ground stations to enter into an error state when using GPS wind finding. In some instances, the flight was aborted due to the error state and not data was collected. A workaround was developed to allow sondes to be launched without collecting wind data. |
Measurements: | twpsondewnpnC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/21/2009 | 1100 | 06/26/2009 | 1100 |
06/27/2009 | 1200 | 06/27/2009 | 1200 |
Subject: | TWP/SONDE/C2 - Wind data missing |
DataStreams: | twpsondewnpnC2.b1 |
Description: | A GPS problem associated with Vaisala BBSS ground station software issues caused the ground stations to enter into an error state when using GPS wind finding. In some instances, the flight was aborted due to the error state and not data was collected. A workaround was developed to allow sondes to be launched without collecting wind data. |
Measurements: | twpsondewnpnC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/06/2009 | 2319 | 07/07/2009 | 1348 |
Subject: | TWP/SMET/C1 - Reprocess: Barometric pressure data scaled incorrectly |
DataStreams: | twpsmet60sC1.b1 |
Description: | The barometer data was scaled incorrectly when a new program was loaded into the datalogger. The pressure data was reported as mb (hPa) instead of the standard kPa. So, in essence the value was a factor of ten to large. |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/01/2009 | 0100 | 10/15/2009 | 0300 |
Subject: | TWP/SMET/C2 - Induced wind speed when calm |
DataStreams: | twpsmet60sC2.b1 |
Description: | The upper and lower wind sensors were not trending well at wind speed below 1 m/s. Both sensors were showing values above 0m/s when calm. The lightning protector was at fault resulting in an induced wind voltage during calm conditions. Users should subtract any offset found (for example 0.19 m/s for upper wind speed) when the wind speeds are flat-lined. The offset value was not consistent. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
09/30/2009 | 0045 | 09/30/2009 | 0500 |
Subject: | TWP/SMET/C3 - Tower Lowered for Maintenance |
DataStreams: | twpsmet60sC3.b1 |
Description: | The tower was lowered for annual anemometer changes. The wind data is suspect. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/14/2009 | 2150 | 10/15/2009 | 0315 |
Subject: | TWP/SMET/C2 - Tower Lowered for Maintenance |
DataStreams: | twpsmet60sC2.b1 |
Description: | Data is suspect due to the tower being lowered. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/04/2010 | 0600 | 02/23/2010 | 2315 |
Subject: | TWP/SMET/C2 - Barometer failure |
DataStreams: | twpsmet60sC2.b1 |
Description: | The atmos_pressure values were spiking high (up to 110 kPa) from 06:00 UTC on 02/04 until the data went missing at 10:44 UTC on 02/06 when the barometer failed completely. Barometer replaced 2/23. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/02/2010 | 0000 | 05/11/2010 | 0330 |
Subject: | TWP/SMET/C1 - Missing RH, Barometer, and ORG data |
DataStreams: | twpsmet60sC1.b1 |
Description: | Atmos_pressure data suddenly went missing on 03/02 at 07:34 UTC and consequently, the relative humidity data flatlined. Furthermore, after a sudden precipitation event when the max precip rate flag was tripped the TBRG total has not agreed with the comparison ORG or the precip rate plot. A loose wire connection was fixed 3/22 restoring RH and barometer data. A damaged cable was repaired 5/11 restoring ORG data. |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/05/2010 | 0000 | 08/29/2010 | 0154 |
Subject: | TWP/SMET/C1 - Aux (lower) wind sensor failed |
DataStreams: | twpsmet60sC1.b1 |
Description: | The lower wind direction sensor on the C1 site was flatlining at 270 degrees throughout most of the daylight hours of the day. During the night the sensor appeared to be working fine. |
Measurements: | twpsmet60sC1.b1:
|