DQR ID | Subject | Data Streams Affected |
---|---|---|
D061214.1 | TWP/SKYRAD/C3 - NIP instrument failure | twpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1 |
D071001.4 | TWP/GNDRAD/C3 - Maintenance activities affected GNDRAD | twpgndrad20sC3.a0, twpgndrad60sC3.b1 |
D080121.2 | TWP/GNDRAD/C3 - Gndrad shutdown for tropical cylone | twpgndradC3.00, twpgndrad20sC3.a0, twpgndrad20sC3.a1, twpgndrad60sC3.b1 |
D080414.1 | TWP/SKYRAD/C3 - IRT power supply | twpskyrad60sC3.b1 |
D080904.6 | TWP/SKYRAD/C3 - Contamination | twpskyrad60sC3.b1 |
D081222.2 | TWP/SKYRAD/C3 - Direct normal instrument failure | twpskyrad20sC3.a0, twpskyrad60sC3.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: | 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 |
---|---|---|---|
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:
|
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: | twpgndradC3.00, twpgndrad20sC3.a0, twpgndrad20sC3.a1, twpgndrad60sC3.b1 |
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: | twpgndrad20sC3.a1:
twpgndrad20sC3.a0:
twpgndrad60sC3.b1:
twpgndradC3.00:
|
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 |
---|---|---|---|
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 |
---|---|---|---|
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:
|