DQR ID | Subject | Data Streams Affected |
---|---|---|
D000613.3 | TWP/C2/SMET - Pressure sensitivity to rain | twpsmet60sC2.a1, twpsmet60sC2.b1 |
D010709.15 | TWP/SMET/C1 - C1 TWP Wind speed calibration factor problem/ Wind1 | twpsmet60sC1.a1, twpsmet60sC1.b1 |
D010709.16 | TWP/SMET/C1 - C1 SMET Incorrect wind speed calibration factors | twpsmet60sC1.a1, twpsmet60sC1.b1 |
D020226.2 | TWP/SMET/C2 - Processing error results in missing data field | twpsmet60sC2.a1 |
D020613.9 | TWP/C2 Installation | twpsmet60sC2.a1, twpsmet60sC2.b1, twpsmetC2.00 |
D020620.61 | TWP/C1 - Incorrect elevation reported in Manus Data | twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1, twpsmet60sC1.a1, twpsmet60sC1.b1 |
D021211.1 | TWP/MET/C3 - WIND DIRECTION SENSOR #2 MISALIGNED | twpsmet60sC3.a1, twpsmet60sC3.b1 |
D030317.1 | TWP/SMET/C1 - Reprocess: Wind Speed #2 incorrect | twpsmet60sC1.a1, twpsmet60sC1.b1 |
D031103.2 | TWP/SMET/C3 - Data reported at 15sec rather than 60s intervals | twpsmet60sC3.a1, twpsmet60sC3.b1 |
D040428.1 | TWP/SMET/C1 - Poor Performing Sensor | twpsmet60sC1.b1 |
D040726.1 | TWP/SMET/C2 - Negative rainfall rates | twpsmet60sC2.b1 |
D040726.2 | TWP/SMET/C2 - Negative rainfall rates | twpsmet60sC2.a1 |
D040726.3 | TWP/SMET/C3 - Negative rainfall rates | twpsmet60sC3.b1 |
D040726.4 | TWP/SMET/C3 - Negative rainfall rates | twpsmet60sC3.a1 |
D050421.4 | TWP/SMET/C1 - Negative Rainfall Rates | twpsmet60sC1.a1 |
D050421.6 | TWP/SMET/C1 - Negative rainfall rates | twpsmet60sC1.b1 |
D060817.3 | TWP/SMET/C1 - Reprocess: Barometric pressure units change | twpsmet60sC1.b1 |
D060818.3 | TWP/SMET/C3 - Reprocess: Barometric pressure units change | 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 |
D970926.10 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/20/1998 | 0000 | 12/31/1998 | 2359 |
Subject: | TWP/C2/SMET - Pressure sensitivity to rain |
DataStreams: | twpsmet60sC2.a1, twpsmet60sC2.b1 |
Description: | The pressure behaves anomalously during rain events - even very mild ones. Normally, the pressure undergoes a smooth semi-diurnal oscillation with little higher frequency variability. However, during and shortly after rain events, the pressure signal exhibits abrupt changes - this sort of behavior has occasionally been observed at Manus but not with the regularity seen here. Examples of this behaviour occur on (date in the form YYYYMMDD): 19981212 19981215 19981216 19981217 19981223 19981224 19981225 19981230 19981231 |
Measurements: | twpsmet60sC2.b1:
twpsmet60sC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/25/1996 | 0000 | 03/02/1999 | 2359 |
Subject: | TWP/SMET/C1 - C1 TWP Wind speed calibration factor problem/ Wind1 |
DataStreams: | twpsmet60sC1.a1, twpsmet60sC1.b1 |
Description: | Wind speed calibration factors were reversed between wind speed sensor 1 and 2. Results in less than 1% error, but correction factors may be used. |
Measurements: | twpsmet60sC1.b1:
twpsmet60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/25/1996 | 0000 | 03/02/1999 | 0000 |
Subject: | TWP/SMET/C1 - C1 SMET Incorrect wind speed calibration factors |
DataStreams: | twpsmet60sC1.a1, twpsmet60sC1.b1 |
Description: | Wind speed calibration factors were reversed between wind speed sensors 1 and 2. Error results in less than a 1% error in wind speed. A correction factor may be used. |
Measurements: | twpsmet60sC1.b1:
twpsmet60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/01/2001 | 0000 | 10/29/2001 | 2359 |
Subject: | TWP/SMET/C2 - Processing error results in missing data field |
DataStreams: | twpsmet60sC2.a1 |
Description: | The bit_data variable is missing from the twpsmet60sC2.b1 data from 4/1/01-10/29/01 due to a processing error. These data are in the queue for reprocessing at low priority. |
Measurements: | twpsmet60sC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/21/1998 | 0312 | 11/19/1998 | 2359 |
Subject: | TWP/C2 Installation |
DataStreams: | twpsmet60sC2.a1, twpsmet60sC2.b1, twpsmetC2.00 |
Description: | The Nauru ARCS was installed during the period September-November 1998. Data were being collected by the end of October, but for the first several weeks of November, the site was undergoing considerable change, so data from that period should be used with caution. The official site dedication occured on November 20. Most on-site activity ended following the dedication so we will consider November 20 to be the beginning of the Nauru operations. The last members of the installation team left Nauru on November 24. |
Measurements: | twpsmetC2.00:
twpsmet60sC2.b1:
twpsmet60sC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/10/1996 | 0001 | 06/22/2000 | 2359 |
Subject: | TWP/C1 - Incorrect elevation reported in Manus Data |
DataStreams: | twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1, twpsmet60sC1.a1, twpsmet60sC1.b1 |
Description: | (From Bill Clements) We have been using 6m MSL as the station elevation of Momote (Manus). This was based on information posted near the station barometer in the Momote Weather Service Office. It turns out that the official WMO station elevation for Momote is 4m MSL and the upper air elevation is 5m MSL. All Manus instruments except the sonde station are at 4m MSL. The sonde launching station is at 5m MSL. |
Measurements: | twpgndrad20sC1.a1:
twpgndrad60sC1.b1:
twpsmet60sC1.b1:
twpgndrad60sC1.a1:
twpsmet60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/21/2002 | 0000 | 12/09/2002 | 0000 |
Subject: | TWP/MET/C3 - WIND DIRECTION SENSOR #2 MISALIGNED |
DataStreams: | twpsmet60sC3.a1, twpsmet60sC3.b1 |
Description: | Wind direction sensor #2 was misaligned and off by 15 degrees. |
Measurements: | twpsmet60sC3.a1:
twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/27/2003 | 1750 | 03/03/2003 | 1900 |
Subject: | TWP/SMET/C1 - Reprocess: Wind Speed #2 incorrect |
DataStreams: | twpsmet60sC1.a1, twpsmet60sC1.b1 |
Description: | Wind Speed #2 sensor was reporting values 10 times above the actual value. During an update to the logger configuration file the calibration multiplier was incorrectly entered. The multiplier inserted was .97630 when it should have been .09763. This caused the readings from this sensor to be incorrect. |
Measurements: | twpsmet60sC1.b1:
twpsmet60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/12/2002 | 0628 | 06/03/2002 | 2359 |
Subject: | TWP/SMET/C3 - Data reported at 15sec rather than 60s intervals |
DataStreams: | twpsmet60sC3.a1, twpsmet60sC3.b1 |
Description: | Data in these data streams should be reports at 60sec intervals, but the logger program running during this time had the interval set to 15s. Users will have to average the 15sec data to get 60sec data. |
Measurements: | twpsmet60sC3.a1:
twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/23/2004 | 0000 | 01/19/2005 | 1530 |
Subject: | TWP/SMET/C1 - Poor Performing Sensor |
DataStreams: | twpsmet60sC1.b1 |
Description: | On 4/23/2004 condensation was found inside the target area of the ORG lens. A spare was sent and installed but did not solve the problem of high background voltage values causing rainrate values to be recorded during no rainfall. Values range anywhere from 0.06 to 0.12 mm/hr. A new Optical Rain Gage was installed on 01/19/2005 @ 13:30 GMT alleviating the high background voltage values that lead to consistent rainfall rates of around 0.11 to 0.15 mm/hr on a consistent basis. The formula used to calculate rainfall rates from the new Optical Rain Gage is: RR (mm/hr) = 25(V^1.87) - 0.15. Older model formula = 20(V^2) - 0.05 The two formulas result in comparable data. |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/21/1998 | 0311 | 07/06/2004 | 0138 |
Subject: | TWP/SMET/C2 - Negative rainfall rates |
DataStreams: | twpsmet60sC2.b1 |
Description: | Due to limitations of the Zeno dataloggers all voltage measurements from the optical rain gauge (ORG) were converted to rainfall rates. This resulted in negative values for rain rates. Any value below 0.10 mm/hr should be considered to be 0 mm/hr. New dataloggers alleviated this problem. |
Measurements: | twpsmet60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/21/1998 | 0311 | 03/03/2003 | 2359 |
Subject: | TWP/SMET/C2 - Negative rainfall rates |
DataStreams: | twpsmet60sC2.a1 |
Description: | Due to limitations of the Zeno dataloggers all voltage measurements from the optical rain gauge (ORG) were converted to rainfall rates. This resulted in negative values for rain rates. Any value below 0.10 mm/hr should be considered to be 0 mm/hr. New dataloggers alleviated this problem. |
Measurements: | twpsmet60sC2.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/12/2002 | 0628 | 05/17/2004 | 2300 |
Subject: | TWP/SMET/C3 - Negative rainfall rates |
DataStreams: | twpsmet60sC3.b1 |
Description: | Due to limitations of the Zeno dataloggers all voltage measurements from the optical rain gauge (ORG) were converted to rainfall rates. This resulted in negative values for rain rates. Any value below 0.10 mm/hr should be considered to be 0 mm/hr. New dataloggers alleviated this problem. |
Measurements: | twpsmet60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/12/2002 | 0628 | 03/03/2003 | 2359 |
Subject: | TWP/SMET/C3 - Negative rainfall rates |
DataStreams: | twpsmet60sC3.a1 |
Description: | Due to limitations of the Zeno dataloggers all voltage measurements from the optical rain gauge (ORG) were converted to rainfall rates. This resulted in negative values for rain rates. Any value below 0.10 mm/hr should be considered to be 0 mm/hr. New dataloggers alleviated this problem. |
Measurements: | twpsmet60sC3.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/1996 | 0000 | 03/03/2003 | 2359 |
Subject: | TWP/SMET/C1 - Negative Rainfall Rates |
DataStreams: | twpsmet60sC1.a1 |
Description: | Due to limitations of the Zeno dataloggers all voltage measurements from the optical rain gauge (ORG) were converted to rainfall rates. This resulted in negative values for rain rates. Any value below 0.10 mm/hr should be considered to be 0 mm/hr. New dataloggers alleviated this problem. |
Measurements: | twpsmet60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/1996 | 0000 | 03/09/2004 | 2243 |
Subject: | TWP/SMET/C1 - Negative rainfall rates |
DataStreams: | twpsmet60sC1.b1 |
Description: | Due to limitations of the Zeno dataloggers all voltage measurements from the optical rain gauge (ORG) were converted to rainfall rates. This resulted in negative values for rain rates. Any value below 0.10 mm/hr should be considered to be 0 mm/hr. New dataloggers alleviated this problem. New loggers were installed 03/09/2004 @ 2243 GMT. |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/1996 | 0000 | 08/02/2004 | 1911 |
Subject: | TWP/SMET/C1 - Reprocess: Barometric pressure units change |
DataStreams: | twpsmet60sC1.b1 |
Description: | Barometric pressure data during this time period is reported in hPa. After this time, the data have been converted to kPa to standardize the measurement units among ARM sites and to conform to accepted standard units determined by the scientific community. |
Measurements: | twpsmet60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/02/2003 | 0000 | 07/13/2006 | 2219 |
Subject: | TWP/SMET/C3 - Reprocess: Barometric pressure units change |
DataStreams: | twpsmet60sC3.b1 |
Description: | Barometric pressure data during this time period is reported in hPa. After this time, the data have been converted to kPa to standardize the measurement units among ARM sites and to conform to accepted standard units determined by the scientific community. |
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 |
---|
Subject: | |
DataStreams: | |
Description: | |
Measurements: |