DQR ID | Subject | Data Streams Affected |
---|---|---|
D061214.1 | TWP/SKYRAD/C3 - NIP instrument failure | twpskyrad20sC3.a0, twpskyrad60sC3.b1, twpskyradC3.00 |
D070110.1 | TWP/GNDRAD/C2 - IRT signal | twpgndrad60sC2.b1 |
D070206.1 | TWP/SKYRAD/C2 - Short direct normal | twpskyrad20sC2.a0, twpskyrad60sC2.b1 |
D070306.2 | TWP/SMET/C3 - Barometer Data Incorrect | twpsmet60sC3.b1 |
D070306.3 | TWP/SMET/C3 - Data Incorrect Due to Water Intrusion | twpsmet60sC3.b1 |
D070404.2 | TWP/SKYRAD/C2 - IRT calibration | twpskyrad60sC2.b1 |
D070406.6 | TWP/GNDRAD/C2 - Reprocess: IRT calibration | twpgndrad60sC2.b1 |
D070510.5 | TWP/SMET/C2 - Lower windspeed sensor questionable | twpsmet60sC2.b1 |
D071001.4 | TWP/GNDRAD/C3 - Maintenance activities affected GNDRAD | twpgndrad20sC3.a0, twpgndrad60sC3.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/13/2006 | 0342 | 01/16/2007 | 0440 |
Subject: | TWP/SKYRAD/C3 - NIP instrument failure |
DataStreams: | twpskyrad20sC3.a0, twpskyrad60sC3.b1, twpskyradC3.00 |
Description: | The NIP (Short Direct Normal) was replaced after it displayed symptoms of failure associated with either unknown precipitation related issues or a possible lightning strike. NIP data are not recoverable. Direct normal data can be reconstructed from global hemispheric and global diffuse data using the following relationship: global hemispheric = direct*cos(sza) + diffuse hemispheric |
Measurements: | twpskyradC3.00:
twpskyrad60sC3.b1:
twpskyrad20sC3.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/03/2006 | 0400 | 02/04/2007 | 2316 |
Subject: | TWP/GNDRAD/C2 - IRT signal |
DataStreams: | twpgndrad60sC2.b1 |
Description: | When the other GNDRAD radiometers were replaced on 12/3/2006, the quality of the IRT signal began to degrade until 12/26 when it became unusable. The instrument was replaced on 2/4/2007. |
Measurements: | twpgndrad60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/31/2007 | 0223 | 02/10/2007 | 0055 |
Subject: | TWP/SKYRAD/C2 - Short direct normal |
DataStreams: | twpskyrad20sC2.a0, twpskyrad60sC2.b1 |
Description: | The short_direct_normal (NIP) data are missing or incorrect due to instrument cable failure. The cable was replaced. The short_direct_normal can be calculated using the following relationship for shortwave radiometers: global hemispheric = diffuse hemispheric + direct normal *cos (zenith angle) |
Measurements: | twpskyrad60sC2.b1:
twpskyrad20sC2.a0:
|
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 - Data Incorrect Due to Water Intrusion |
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 |
---|---|---|---|
12/04/2006 | 2120 | 02/22/2007 | 0125 |
Subject: | TWP/SKYRAD/C2 - IRT calibration |
DataStreams: | twpskyrad60sC2.b1 |
Description: | The IRT was not properly calibrated and was not able to measure sky temperatures below 273.2 K. (This instrument was the same one damaged by lightning in November 2005 in Darwin. It was returned for repair and received a new lens but was calibrated only down to 0 deg C, so the problem was neither detected nor repaired.) The IRT was replaced on 2/22/2007. |
Measurements: | twpskyrad60sC2.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/04/2007 | 2317 | 02/17/2007 | 0400 |
Subject: | TWP/GNDRAD/C2 - Reprocess: IRT calibration |
DataStreams: | twpgndrad60sC2.b1 |
Description: | The configuration of the IRT was set to that used at TWP/C3. This caused the calibration of the data to be wrong. It was corrected by reconfiguring the IRT to match the datalogger program. These data can be reprocessed and corrected by adding 10K, i.e. sfc_ir_temp(new) = sfc_ir_temp(old) + 10K. |
Measurements: | twpgndrad60sC2.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 |
---|---|---|---|
09/17/2007 | 2330 | 09/18/2007 | 0722 |
09/18/2007 | 2320 | 09/19/2007 | 0150 |
09/19/2007 | 2333 | 09/20/2007 | 0055 |
Subject: | TWP/GNDRAD/C3 - Maintenance activities affected GNDRAD |
DataStreams: | twpgndrad20sC3.a0, twpgndrad60sC3.b1 |
Description: | While maintenance was performed on the SMET anenometer, the GNDRAD instruments were inverted. Disregard GNDRAD data during this time. |
Measurements: | twpgndrad20sC3.a0:
twpgndrad60sC3.b1:
|