DQR ID | Subject | Data Streams Affected |
---|---|---|
D061114.4 | TWP/MWR/C3 - Sun in field of view of radiometer | twpmwrlosC3.b1, twpmwrtipC3.a1 |
D070412.3 | TWP/MWR/C1/C2 - Sun in the field of view | twpmwrlosC1.b1, twpmwrlosC2.b1, twpmwrtipC1.a1, twpmwrtipC2.a1 |
D080904.3 | TWP/SKYRAD/C1 - IRT measurement error | twpskyrad60sC1.b1 |
D081027.1 | TWP/GNDRAD/C1 - IRT power connector | twpgndrad60sC1.b1 |
D081216.1 | TWP/MWR/C2 - Incorrect ambient temperature during rain | twpmwrlosC2.b1, twpmwrtipC2.a1 |
D081222.2 | TWP/SKYRAD/C3 - Direct normal instrument failure | twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
D081222.3 | TWP/SKYRAD/C2 - Tracker failure | twpskyrad20sC2.a0, twpskyrad60sC2.b1 |
D090114.4 | TWP/MWR/C1 - Ambient temperature data missing | twpmwrlosC1.b1, twpmwrtipC1.a1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/20/2006 | 0000 | 11/09/2006 | 0400 |
10/15/2008 | 0000 | 11/08/2008 | 0000 |
Subject: | TWP/MWR/C3 - Sun in field of view of radiometer |
DataStreams: | twpmwrlosC3.b1, twpmwrtipC3.a1 |
Description: | Each day from approximately 9/15 to 10/9 around local noon, there is an increase in the brightness temperature due to the sun being in the field of view of the radiometer. |
Measurements: | twpmwrlosC3.b1:
twpmwrtipC3.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/07/2007 | 0000 | 04/02/2007 | 2359 |
03/01/2008 | 0000 | 04/02/2008 | 2359 |
09/10/2008 | 0000 | 10/12/2008 | 0000 |
Subject: | TWP/MWR/C1/C2 - Sun in the field of view |
DataStreams: | twpmwrlosC1.b1, twpmwrlosC2.b1, twpmwrtipC1.a1, twpmwrtipC2.a1 |
Description: | Every day between around noon local time (usually between 1 and 2 AM UTC time) there is an increase in the brightness temperatures due to the sun in the field of vie of the radiometer. |
Measurements: | twpmwrlosC2.b1:
twpmwrlosC1.b1:
twpmwrtipC1.a1:
twpmwrtipC2.a1:
|
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 |
---|---|---|---|
10/24/2008 | 0100 | 11/03/2008 | 2330 |
Subject: | TWP/GNDRAD/C1 - IRT power connector |
DataStreams: | twpgndrad60sC1.b1 |
Description: | The power connector of the IRT broke due to corrosion. The instrument was replaced. |
Measurements: | twpgndrad60sC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/09/2008 | 0100 | 01/09/2009 | 0300 |
Subject: | TWP/MWR/C2 - Incorrect ambient temperature during rain |
DataStreams: | twpmwrlosC2.b1, twpmwrtipC2.a1 |
Description: | The ambient temperature was approximately 15 degree higher than what it should be when it was raining and the heater came. On Jan 9 2009 the dewblower was replaced which solved the problem. The increased ambient temperature (tkair) was happening during times of rain and users should always disregard MWR data during rain events. Therefore this DQR is colored transparent. |
Measurements: | twpmwrlosC2.b1:
twpmwrtipC2.a1:
|
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 |
---|---|---|---|
12/03/2008 | 1900 | 02/06/2009 | 0530 |
Subject: | TWP/MWR/C1 - Ambient temperature data missing |
DataStreams: | twpmwrlosC1.b1, twpmwrtipC1.a1 |
Description: | The ambient temperature readings (tkair) suddenly failed. The sensor was replaced on Feb 6. |
Measurements: | twpmwrlosC1.b1:
twpmwrtipC1.a1:
|