DQR ID | Subject | Data Streams Affected |
---|---|---|
D000302.1 | TWP/SMET/C1 - Reprocess: Skewed wind direction 1 data | twpsmet60sC1.00, twpsmet60sC1.a1, twpsmet60sC1.b1 |
D000504.5 | TWP/SMET/C1 - Wind Direction alignment method | twpsmet60sC1.00, twpsmet60sC1.a1, twpsmet60sC1.b1 |
D000621.1 | TWP/SMET/C1 - Incorrect calibration for ARCS1 Wind speed | twpsmetC1.00, twpsmet60sC1.00, twpsmet60sC1.a1, twpsmet60sC1.b1 |
D000718.12 | TWP/SMET/C1 - Elevated relative humidity | twpsmet60sC1.a1, twpsmet60sC1.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 |
D020620.61 | TWP/C1 - Incorrect elevation reported in Manus Data | twpsmet60sC1.a1, twpsmet60sC1.b1, twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.b1 |
D050421.6 | TWP/SMET/C1 - Negative rainfall rates | twpsmet60sC1.b1 |
D990910.2 | Calibration interruption at TWP Nauru | twpsmetC2.00, twpsmet60sC1.a1, twpsmet60sC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/24/1999 | 00 | 11/25/1999 | 450 |
Subject: | TWP/SMET/C1 - Reprocess: Skewed wind direction 1 data |
DataStreams: | twpsmet60sC1.00, twpsmet60sC1.a1, twpsmet60sC1.b1 |
Description: | Wind direction 1 data is incorrect. Manus SMET wind direction for Wind-1 (upper unit) was apparently skewed from its original position as a result of checking direction calibration. As near as we can tell the position of the sensor was rotated clockwise Somewhere in the range of 45-90 degrees, most likely in steps 22.5 degrees. Data comparison performed on 3-2-00, using a small amount of data from this instrument. |
Measurements: | twpsmet60sC1.b1:
twpsmet60sC1.00:
twpsmet60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/25/1999 | 450 | 04/02/2000 | 00 |
Subject: | TWP/SMET/C1 - Wind Direction alignment method |
DataStreams: | twpsmet60sC1.00, twpsmet60sC1.a1, twpsmet60sC1.b1 |
Description: | During RESET10 we discovered a problem with wind direction from WIND1 (upper anemometer). During RESET8, WIND1 was corrected by rotating the alignment ring instead of the anemometer. This resulted in a better agreement between the 2 anemometers, but is not the correct way to align an anemometer. The alignment ring was readjusted for true north and the anemometer reset in the proper slot (the original problem). |
Measurements: | twpsmet60sC1.b1:
twpsmet60sC1.00:
twpsmet60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/23/1999 | 00 | 04/01/2000 | 2359 |
Subject: | TWP/SMET/C1 - Incorrect calibration for ARCS1 Wind speed |
DataStreams: | twpsmetC1.00, twpsmet60sC1.00, twpsmet60sC1.a1, twpsmet60sC1.b1 |
Description: | On 23 OCT 99, during Reset 8, an incorrect slope of was entered for the upper, windspeed1, wind speed sensor resulting in a 1% overestimate of the wind speed. The correct calibration was entered on 1 APR 2000 during RESET 10. |
Measurements: | twpsmet60sC1.b1:
twpsmetC1.00:
twpsmet60sC1.00:
twpsmet60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/16/1998 | 00 | 08/12/1999 | 00 |
Subject: | TWP/SMET/C1 - Elevated relative humidity |
DataStreams: | twpsmet60sC1.a1, twpsmet60sC1.b1 |
Description: | The relative humidity has been exceeding 100% with unusual regularity. The most dramatic case occured on December 31 when the RH exceeded 100% for 18 hours and exceeded 103.5% for 6 hours with a maximum value of 103.8%. A PIF was submitted to propose changing this sensor. This change occurred on August 12, 1999. |
Measurements: | twpsmet60sC1.b1:
twpsmet60sC1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/25/1996 | 00 | 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 | 00 | 03/02/1999 | 00 |
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 |
---|---|---|---|
10/10/1996 | 01 | 06/22/2000 | 2359 |
Subject: | TWP/C1 - Incorrect elevation reported in Manus Data |
DataStreams: | twpsmet60sC1.a1, twpsmet60sC1.b1, twpgndrad20sC1.a1, twpgndrad60sC1.a1, twpgndrad60sC1.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 |
---|---|---|---|
10/09/1996 | 00 | 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 |
---|---|---|---|
08/09/1999 | 030 | 08/11/1999 | 30 |
Subject: | Calibration interruption at TWP Nauru |
DataStreams: | twpsmetC2.00, twpsmet60sC1.a1, twpsmet60sC1.b1 |
Description: | Occasional calibration interuption occured while calibration SMET instruments |
Measurements: | twpsmet60sC1.b1:
twpsmetC2.00:
twpsmet60sC1.a1:
|