DQR ID | Subject | Data Streams Affected |
---|---|---|
D000608.18 | TWP/C2/Sonde Missing Data | twpsondeC2.00, twpsondewnpnC2.00, twpsondewnpnC2.a0, twpsondewnpnC2.a1 |
D000615.10 | TWP/SONDE/C2 - Missing Winds | twpsondewnpnC2.a0, twpsondewnpnC2.a1 |
D000615.6 | TWP/C2/Balloon Soundings: Missing Flights | twpsondewnpnC2.a0, twpsondewnpnC2.a1 |
D020613.10 | TWP/C2 Installation | twpsondewnpnC2.00, twpsondewnpnC2.a0, twpsondewnpnC2.a1 |
D051114.3 | TWP/SKYRAD/C3 - tracker inoperative | twpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
D060110.3 | TWP/SKYRAD/C3 - IRT damaged | twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
D060223.7 | TWP/SKYRAD/C3 - Solar Tracker locking at solar noon | twpskyradC3.00, twpskyrad20sC3.a0, twpskyrad20sC3.a1, twpskyrad60sC3.b1 |
D061120.1 | TWP/SKYRAD/C3 - NIP Failure | twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
D061214.1 | TWP/SKYRAD/C3 - NIP instrument failure | twpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
D081222.2 | TWP/SKYRAD/C3 - Direct normal instrument failure | twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
D081222.3 | TWP/SKYRAD/C2 - Tracker failure | twpskyrad20sC2.a0, twpskyrad60sC2.b1 |
D090129.1 | TWP/SKYRAD/C3 - Tracker inoperative | twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
D090328.1 | TWP/SKYRAD/C2 - Tracker inoperative | twpskyrad20sC2.a0, twpskyrad60sC2.b1 |
D090605.2 | TWP/SKYRAD/C2 - Instrument grounding problem | twpskyrad20sC2.a0, twpskyrad60sC2.b1 |
D090610.2 | TWP/SKYRAD/C2 - IRT Missing | twpskyrad20sC2.a0, twpskyrad60sC2.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/22/1998 | 0000 | 03/03/1999 | 2359 |
Subject: | TWP/C2/Sonde Missing Data |
DataStreams: | twpsondeC2.00, twpsondewnpnC2.00, twpsondewnpnC2.a0, twpsondewnpnC2.a1 |
Description: | There were no sondes launced during this period because there was no helium on site and the hydrogen generator was not working. The hydrogen generator was repaired and launches resumed. |
Measurements: | twpsondewnpnC2.00:
twpsondeC2.00:
twpsondewnpnC2.a1:
twpsondewnpnC2.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/26/1998 | 0000 | 12/22/1998 | 2359 |
Subject: | TWP/SONDE/C2 - Missing Winds |
DataStreams: | twpsondewnpnC2.a0, twpsondewnpnC2.a1 |
Description: | About half of the soundings in November-December exhibited drop-outs in the winds. These dropouts were typically over a depth of 1-2 km. Sometimes the dropout occurred at the surface, sometimes at the top of the sounding and sometimes in the middle. These gaps occurred on: 19981126 19981129 19981206 19981209 19981210 19981211 19981212 19981221 19981222 |
Measurements: | twpsondewnpnC2.a1:
twpsondewnpnC2.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/21/1998 | 0000 | 11/25/1998 | 2359 |
Subject: | TWP/C2/Balloon Soundings: Missing Flights |
DataStreams: | twpsondewnpnC2.a0, twpsondewnpnC2.a1 |
Description: | No sondes were launched during this period for reasons unknown. |
Measurements: | twpsondewnpnC2.a1:
twpsondewnpnC2.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/05/1998 | 2249 | 11/19/1998 | 2359 |
Subject: | TWP/C2 Installation |
DataStreams: | twpsondewnpnC2.00, twpsondewnpnC2.a0, twpsondewnpnC2.a1 |
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: | twpsondewnpnC2.00:
twpsondewnpnC2.a1:
twpsondewnpnC2.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/14/2005 | 0453 | 12/02/2005 | 0000 |
Subject: | TWP/SKYRAD/C3 - tracker inoperative |
DataStreams: | twpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
Description: | A lightning strike at Darwin removed the tracker from service. Instruments installed on the tracker were rendered either inoperative or were not shaded during this time period. The longwave hemispheric instruments PIR1 and PIR2 appear to have been unaffected. They are not suseptable to incorrect tracker operation. The downwelling hemispheric shortwave PSP instrument mounted on Skyrad will not be affected by incorrect tracker operation. |
Measurements: | twpskyrad60sC3.b1:
twpskyrad20sC3.a0:
twpskyradC3.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/13/2005 | 2314 | 03/07/2006 | 0257 |
Subject: | TWP/SKYRAD/C3 - IRT damaged |
DataStreams: | twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
Description: | The analog output of the IRT was damaged by a lightning strike. The problem was corrected by replacing the instrument with a spare. The damaged IRT was returned to the vendor for repair. |
Measurements: | twpskyrad60sC3.b1:
twpskyrad20sC3.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/17/2006 | 0000 | 03/10/2006 | 0411 |
Subject: | TWP/SKYRAD/C3 - Solar Tracker locking at solar noon |
DataStreams: | twpskyradC3.00, twpskyrad20sC3.a0, twpskyrad20sC3.a1, twpskyrad60sC3.b1 |
Description: | The Scitech solar tracker from SGP that was installed on 2005-12-01 after the previous tracker was damaged by lightning on 2005-11-14 has been hanging up every day at solar noon. In Feb, the sun moved from south to north and the Scitech tracker does not seem to be able to deal with this. During this period the operators power cycled the tracker between 05:00Z and 10:00Z almost every day and data from around solar noon (03:30Z) until the power cycle are unusable for the measurements that use the tracker (NIP, B&W Diffuse, and shaded PIRs). The problem was corrected when the Scitech tracker was replaced by a Brusag tracker on 2006-03-10. |
Measurements: | twpskyrad60sC3.b1:
twpskyrad20sC3.a1:
twpskyrad20sC3.a0:
twpskyradC3.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/16/2006 | 2006 | 11/20/2006 | 0630 |
Subject: | TWP/SKYRAD/C3 - NIP Failure |
DataStreams: | twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
Description: | Skyrad normal incident shortwave irradiance (NIP) started reporting impossible values for direct normal irradiance starting 16 November approx 2100GMT corresponding to a rain event at the same time. The NIP was replaced fixing the problem. Direct normal data are not recoverable. However, the NIP data can be calculated from the global hemsipherical shortwave and global hemispherical diffuse datastreams by using the following relationship: Global Horizontal = Direct Normal x cos(Z) + Diffuse Horizontal where Z is the zenith angle. |
Measurements: | twpskyrad60sC3.b1:
twpskyrad20sC3.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/13/2006 | 0342 | 01/16/2007 | 0440 |
Subject: | TWP/SKYRAD/C3 - NIP instrument failure |
DataStreams: | twpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
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: | twpskyrad60sC3.b1:
twpskyrad20sC3.a0:
twpskyradC3.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/14/2008 | 0457 | 12/30/2008 | 0040 |
Subject: | TWP/SKYRAD/C3 - Direct normal instrument failure |
DataStreams: | twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
Description: | The NIP instrument (short_direct_normal data stream) failed giving bad data during this time period. The failure start time coincides with a reported DC power failure but no connection between the reported power failure and the failure of this instrument could be determined. Ops also reported the tracker clock running 2.9 minutes slow during maintenance on 12/22 0300GMT (see CS-2008-0714). Again, the slow clock is not suspect and did not appear to affect alignment. Ops replaced the NIP instrument on 12/30 and short_direct_normal data resumed normal operation. Disregard the short_direct_normal (NIP) data during this time period or calculate using the global and diffuse instruments and the following relationship: short_direct_normal = ((down_short_hemisp - down_short_diffuse_hemisp))/cos(zenith angle) |
Measurements: | twpskyrad60sC3.b1:
twpskyrad20sC3.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/17/2008 | 1942 | 12/21/2008 | 2215 |
Subject: | TWP/SKYRAD/C2 - Tracker failure |
DataStreams: | twpskyrad20sC2.a0, twpskyrad60sC2.b1 |
Description: | Tracker failed to wake up on 12/17. Ops reset tracker on 12/21. The affected instruments are the 8-48 (down_short_diffuse) and NIP (direct_normal) shortwave instruments. |
Measurements: | twpskyrad60sC2.b1:
twpskyrad20sC2.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/23/2009 | 2100 | 01/27/2009 | 0715 |
Subject: | TWP/SKYRAD/C3 - Tracker inoperative |
DataStreams: | twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
Description: | The tracker at Darwin failed 01/23. The tracker was power cycled on 01/27 and it returned to normal operation. The affected data streams are short_direct_normal (NIP) and down_short_diffuse_hemisp (8-48). The down_short_hemisp are not affected. The down_long_hemisp1 and 2 (PIR1 and PIR2) should not be affected but direct sun can affect individual instrument performance. |
Measurements: | twpskyrad60sC3.b1:
twpskyrad20sC3.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/25/2009 | 2000 | 05/18/2009 | 0442 |
Subject: | TWP/SKYRAD/C2 - Tracker inoperative |
DataStreams: | twpskyrad20sC2.a0, twpskyrad60sC2.b1 |
Description: | The tracker failed in park position. Tracker was replaced 5/14 but did not resume fully normal operation until 5/18. The down_short_diffuse and short_direct_normal data are directly affected by this failure. These data are not recoverable. |
Measurements: | twpskyrad60sC2.b1:
twpskyrad20sC2.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/21/2009 | 1855 | 05/25/2009 | 2100 |
Subject: | TWP/SKYRAD/C2 - Instrument grounding problem |
DataStreams: | twpskyrad20sC2.a0, twpskyrad60sC2.b1 |
Description: | During this time period the IRT analog output line appears to have adversely affected the skyrad datalogger grounding. This resulted in intermittent anomalous readings across all skyrad datalogger channels including logger voltage. |
Measurements: | twpskyrad60sC2.b1:
twpskyrad20sC2.a0:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/25/2009 | 2230 | 06/23/2009 | 0635 |
Subject: | TWP/SKYRAD/C2 - IRT Missing |
DataStreams: | twpskyrad20sC2.a0, twpskyrad60sC2.b1 |
Description: | After a significant rain event on 5/25, the IRT was found to be the cause of grounding problems with the SKYRAD datalogger that was affecting the measurements from other instruments. This problem was solved by removing the IRT signal from the datalogger. The problem was suspected to be with either the power/signal cable or the internal grounding of the IRT. The problem was corrected when both the IRT and analog cable were replaced on 6/23. |
Measurements: | twpskyrad60sC2.b1:
twpskyrad20sC2.a0:
|