DQR ID | Subject | Data Streams Affected |
---|---|---|
D080121.2 | TWP/GNDRAD/C3 - Gndrad shutdown for tropical cylone | twpgndrad20sC3.a0, twpgndrad20sC3.a1, twpgndrad60sC3.b1, twpgndradC3.00 |
D080211.2 | TWP/SKYRAD/C1 - Failed PSP ventilator fan | twpskyrad20sC1.a0, twpskyrad60sC1.b1 |
D080225.1 | TWP/SMET/C3 - Upper Wind Sensor Data Questionable | twpsmet60sC3.b1 |
D080313.2 | TWP/SKYRAD/C2 - Direct Normal reading too low | twpskyrad20sC2.a0, twpskyrad60sC2.b1, twpskyradC2.00 |
D080414.1 | TWP/SKYRAD/C3 - IRT power supply | twpskyrad60sC3.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 |
D080618.1 | TWP/SKYRAD/C1 - Tracker Failure | twpskyrad20sC1.a0, twpskyrad60sC1.b1 |
D080707.2 | TWP/SMET/C1 - ORG Precip Data Incorrect | twpsmet60sC1.b1 |
D080715.1 | TWP/SMET/C3 - Upper wind speed data incorrect | twpsmet60sC3.b1 |
D080826.3 | TWP/SKYRAD/C1 - PIR2 ventilator fan failure | twpskyrad20sC1.a0, twpskyrad60sC1.b1 |
D080904.3 | TWP/SKYRAD/C1 - IRT measurement error | twpskyrad60sC1.b1 |
D080904.6 | TWP/SKYRAD/C3 - Contamination | twpskyrad60sC3.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 |
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 |
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 |
D090328.1 | TWP/SKYRAD/C2 - Tracker inoperative | twpskyrad20sC2.a0, twpskyrad60sC2.b1 |
D090515.1 | TWP/SMET/C3 - Reprocess: Temperature Biased low by 1.06 Degrees | twpsmet60sC3.b1 |
D090605.2 | TWP/SKYRAD/C2 - Instrument grounding problem | twpskyrad20sC2.a0, twpskyrad60sC2.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/03/2008 | 1000 | 01/07/2008 | 0515 |
Subject: | TWP/GNDRAD/C3 - Gndrad shutdown for tropical cylone |
DataStreams: | twpgndrad20sC3.a0, twpgndrad20sC3.a1, twpgndrad60sC3.b1, twpgndradC3.00 |
Description: | On Jan 3rd approximately 1000GMT the effects of a tropical cyclone started affecting the installed radiometer measurements at ARM/TWP/C3(Darwin) - both Skyrad and Gndrad. On Jan 4th 0740 GMT the Gndrad station was shutdown to avoid damage due to the close passing of this storm. Station was restarted Jan 7th 0515GMT. |
Measurements: | twpgndradC3.00:
twpgndrad20sC3.a1:
twpgndrad20sC3.a0:
twpgndrad60sC3.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/31/2008 | 0000 | 02/08/2008 | 0248 |
Subject: | TWP/SKYRAD/C1 - Failed PSP ventilator fan |
DataStreams: | twpskyrad20sC1.a0, twpskyrad60sC1.b1 |
Description: | On 1/31 the ventilator for the PSP measuring downwelling_shortwave_hemispheric irradiance failed. The DQ effect of this failure on the measurement of down_short_hemisp is not possible to fully quantify but it has been noted that during these failures the PSP nighttime values can be several (1-3W/m2) smaller than usual. Another effect is slower thermal response (1hr) of the PSP instrument due to daytime heating and cooling of the ventilator housing. |
Measurements: | twpskyrad20sC1.a0:
twpskyrad60sC1.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 |
---|---|---|---|
03/02/2008 | 2230 | 03/10/2008 | 2130 |
Subject: | TWP/SKYRAD/C2 - Direct Normal reading too low |
DataStreams: | twpskyrad20sC2.a0, twpskyrad60sC2.b1, twpskyradC2.00 |
Description: | The NIP (direct_normal shortwave irradiance) measurement was reading too low during this time period. No TWP Ops documentation could be found to determine the cause but data review indicate that the NIP appeared to be reading low by about 25W/m2 during this period. The NIP data had well defined steps in irradiance when compared to three component checks indicating the problem period. |
Measurements: | twpskyrad60sC2.b1:
twpskyrad20sC2.a0:
twpskyradC2.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/11/2008 | 1901 | 04/14/2008 | 2205 |
Subject: | TWP/SKYRAD/C3 - IRT power supply |
DataStreams: | twpskyrad60sC3.b1 |
Description: | The 12-to-24V DC converter the provides power to the IRT had shut down and was restarted by power-cycling. |
Measurements: | twpskyrad60sC3.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 |
---|---|---|---|
06/10/2008 | 2000 | 06/12/2008 | 0800 |
Subject: | TWP/SKYRAD/C1 - Tracker Failure |
DataStreams: | twpskyrad20sC1.a0, twpskyrad60sC1.b1 |
Description: | The solar tracker at C1 failed to wake up the morning of 6/10 approximately 2000GMT. Ops discovered problem and reset tracker 6/12 approximately 0800GMT. Tracker dependent instrument data is inaccurate - this includes the short_direct (NIP) and down_short_diffuse_hemisp (8-48). The down_short_hemisp (PSP) and down_long_hemisp (PIR) are unaffected. |
Measurements: | twpskyrad20sC1.a0:
twpskyrad60sC1.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 |
---|---|---|---|
08/14/2008 | 0200 | 08/18/2008 | 0545 |
Subject: | TWP/SKYRAD/C1 - PIR2 ventilator fan failure |
DataStreams: | twpskyrad20sC1.a0, twpskyrad60sC1.b1 |
Description: | During the time range specified the PIR2 output is questionable due to ventilator fan failure. Although the PIR is temperature compensated, data review indicates that the PIR2 didn't compare as well with PIR1. Typical differences during full sun are approximately 10 w/m2. During this time period differences of 10-14 W/m2 were noted. |
Measurements: | twpskyrad20sC1.a0:
twpskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/18/2008 | 0315 | 10/01/2008 | 2342 |
Subject: | TWP/SKYRAD/C1 - IRT measurement error |
DataStreams: | twpskyrad60sC1.b1 |
Description: | The IRT 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 in April 2006 and again in April 2007 and both times calibrated only down to 0 deg C, so the problem was neither detected nor repaired.) The problem was corrected by replacing the IRT. |
Measurements: | twpskyrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/08/2008 | 0000 | 09/05/2008 | 0053 |
Subject: | TWP/SKYRAD/C3 - Contamination |
DataStreams: | twpskyrad60sC3.b1 |
Description: | The IRT exhibited a positive bias compared to AERI. The problem was corrected when the lens and mirror were cleaned. |
Measurements: | twpskyrad60sC3.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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
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 |
---|---|---|---|
05/21/2009 | 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:
|