DQR ID | Subject | Data Streams Affected |
---|---|---|
D090507.2 | GRW/VCEIL/M1 - Receiver failure | grwvceil25kM1.b1 |
D100129.1 | GRW/AOS/M1 - CPC TEC failure | grwaosM1.a1 |
D100211.2 | GRW/CSPHOT/M1 - Obstruction in collimator tube | grwcsphotppM1.a1, grwcsphotalmM1.a1, grwcsphotaotM1.a1, grwcsphotsizeM1.a1, grwcsphotaotfiltM1.a1, grwcsphotalm1duboM1.a1, grwcsphotfinepfn1M1.a1, grwcsphotaotfiltqaM1.a1, grwcsphottotalpfn1M1.a1, grwcsphotcoarsepfn1M1.a1 |
D100216.6 | GRW/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fields | grwvceil25kM1.b1 |
D100419.1 | GRW/CSPHOT/M1 - Instrument scanning problem | grwcsphotppM1.a1, grwcsphotalmM1.a1, grwcsphotaotM1.a1, grwcsphotsizeM1.a1, grwcsphotaotfiltM1.a1, grwcsphotalm1duboM1.a1, grwcsphotfinepfn1M1.a1, grwcsphotaotfiltqaM1.a1, grwcsphottotalpfn1M1.a1, grwcsphotcoarsepfn1M1.a1 |
D100915.1 | GRW/AOS/M1 - Annual maintenance | grwaosM1.a1, grwaosauxM1.a1, grwaosccnM1.a1, grwnoaaaosM1.b1, grwnoaaaosavgM1.b1, grwnoaaaosfitrhM1.b1 |
D101020.2 | GRW/AOS/M1 - Data processing problem | grwaosM1.a1, grwnoaaaosM1.b1, grwnoaaaosavgM1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/22/2009 | 0925 | 05/16/2009 | 1010 |
Subject: | GRW/VCEIL/M1 - Receiver failure |
DataStreams: | grwvceil25kM1.b1 |
Description: | The AMF VCEIL had lower-than-normal laser transmitter power, ~84%, so the instrument was replaced with a spare on 4/22. The spare VCEIL had just been repaired but began to display receiver failure warnings. Diagnostic information was sent to Vaisala and we discussed either replacing the receiver with the one from the original VCEIL (with the degraded transmitter) or replacing the transmitter in the original VCEIL with the one from the spare. Vaisala recommended the latter because the original VCEIL is a much newer unit. On 5/16, the site operator replaced the transmitter in the original VCEIL with the one from the spare, realigned the optics, recalibrated the laser, and put the instrument back into service, successfully correcting the problem. The data during this period were intermittently incorrect, containing warning flags and alarms and unreasonable cloud base heights. |
Measurements: | grwvceil25kM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/19/2009 | 1844 | 01/15/2010 | 1820 |
Subject: | GRW/AOS/M1 - CPC TEC failure |
DataStreams: | grwaosM1.a1 |
Description: | The thermal electric cooler, which controls the temperature in the Condensation Particle Counter, failed. A new TEC was mailed to GRW. The TEC was replaced and the CPC was working again on Jan. 15th, 2010. |
Measurements: | grwaosM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/01/2009 | 0000 | 05/06/2010 | 2359 |
Subject: | GRW/CSPHOT/M1 - Obstruction in collimator tube |
DataStreams: | grwcsphotppM1.a1, grwcsphotalmM1.a1, grwcsphotaotM1.a1, grwcsphotsizeM1.a1, grwcsphotaotfiltM1.a1, grwcsphotalm1duboM1.a1, grwcsphotfinepfn1M1.a1, grwcsphotaotfiltqaM1.a1, grwcsphottotalpfn1M1.a1, grwcsphotcoarsepfn1M1.a1 |
Description: | Data are suspect. There is a discrepancy between the 1640 channel and the other channels. The discrepancy is possibly related to the intermittent obstruction (a lizard) found in the collimator tube. There may also be ongoing degradation of the instrument possibly related to the lizard activity and deposits. |
Measurements: | grwcsphotsizeM1.a1:
grwcsphotcoarsepfn1M1.a1:
grwcsphotalm1duboM1.a1:
grwcsphotfinepfn1M1.a1:
grwcsphotppM1.a1:
grwcsphotaotfiltqaM1.a1:
grwcsphottotalpfn1M1.a1:
grwcsphotaotfiltM1.a1:
grwcsphotalmM1.a1:
grwcsphotaotM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/13/2009 | 0000 | 10/31/2009 | 2359 |
Subject: | GRW/VCEIL/M1 - Reprocess: Incorrect serial_number and sum_backscatter fields |
DataStreams: | grwvceil25kM1.b1 |
Description: | Attribute serial_number: In most cases, this field is not representative of the actual serial number of the instrument because the value did not change when an instrument changed locations or was replaced with a spare. Variable sum_backscatter: An out-of-range condition for the "sum of detected and normalized backscatter" was reported as 0 instead of missing (-9999). The valid range is 0 - 0.0999 /srad. |
Measurements: | grwvceil25kM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/25/2010 | 0000 | 05/06/2010 | 2359 |
Subject: | GRW/CSPHOT/M1 - Instrument scanning problem |
DataStreams: | grwcsphotppM1.a1, grwcsphotalmM1.a1, grwcsphotaotM1.a1, grwcsphotsizeM1.a1, grwcsphotaotfiltM1.a1, grwcsphotalm1duboM1.a1, grwcsphotfinepfn1M1.a1, grwcsphotaotfiltqaM1.a1, grwcsphottotalpfn1M1.a1, grwcsphotcoarsepfn1M1.a1 |
Description: | There were problems with the almucantar scans causing difficulty in tracking the sun between the almucantar scans for each wavelength. The instrument was due for calibration and maintenance. This unit was replaced on 5/6/2010. |
Measurements: | grwcsphotsizeM1.a1:
grwcsphotcoarsepfn1M1.a1:
grwcsphotalm1duboM1.a1:
grwcsphotfinepfn1M1.a1:
grwcsphotppM1.a1:
grwcsphotaotfiltqaM1.a1:
grwcsphottotalpfn1M1.a1:
grwcsphotaotfiltM1.a1:
grwcsphotalmM1.a1:
grwcsphotaotM1.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
05/20/2010 | 0810 | 05/26/2010 | 1100 |
Subject: | GRW/AOS/M1 - Annual maintenance |
DataStreams: | grwaosM1.a1, grwaosauxM1.a1, grwaosccnM1.a1, grwnoaaaosM1.b1, grwnoaaaosavgM1.b1, grwnoaaaosfitrhM1.b1 |
Description: | Instruments were down for annual maintenance. |
Measurements: | grwaosauxM1.a1:
grwaosccnM1.a1:
grwnoaaaosavgM1.b1:
grwnoaaaosfitrhM1.b1:
grwaosM1.a1:
grwnoaaaosM1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/15/2009 | 0000 | 12/31/2009 | 0000 |
Subject: | GRW/AOS/M1 - Data processing problem |
DataStreams: | grwaosM1.a1, grwnoaaaosM1.b1, grwnoaaaosavgM1.b1 |
Description: | The AOS data was reprocessed for the AMF, SGP and NSA sites. There was an error in the processing of the corrections for the PSAP absorption signal such that a low pass filter was implemented for the scattering data used in these corrections.The difference between the corrected and previous data is < 0.05 Mm-1 (below the instrument detection limit) and should not have a significant effect on the previous data. Data will be reprocessed at a later time when more significant changes to the data processing are implemented. |
Measurements: | grwnoaaaosavgM1.b1:
grwaosM1.a1:
grwnoaaaosM1.b1:
|