DQR ID | Subject | Data Streams Affected |
---|---|---|
D061214.3 | SGP/IRT/E19 - Reprocess: Calibration error | sgpirt200msE19.a1, sgpirtE19.b1 |
D071217.6 | SGP/IRT/E15 - Instrument noise problem | sgpirt200msE15.a1, sgpirtE15.00, sgpirtE15.b1 |
D080131.1 | SGP/IRT/E13 - Reprocess: Sky temperature bias | sgpirt200msE13.a1, sgpirtE13.b1 |
D080424.3 | SGP/IRT/E16 - reference temperature incorrect | sgpirt200msE16.a1, sgpirtE16.b1 |
D091211.1 | SGP/IRT/E6 - Response time | sgpirt200msE6.a1, sgpirtE6.b1 |
D091211.2 | SGP/IRT/E7 - Response time | sgpirt200msE7.a1, sgpirtE7.b1 |
D091211.3 | SGP/IRT/E8 - Response time | sgpirt200msE8.a1, sgpirtE8.b1 |
D091211.4 | SGP/IRT/E9 - Response time | sgpirt200msE9.a1, sgpirtE9.b1 |
D091215.1 | SGP/IRT/E11 - Response time | sgpirt200msE11.a1, sgpirtE11.b1 |
D091215.2 | SGP/IRT/E16 - Response time | sgpirt200msE16.a1, sgpirtE16.b1 |
D091215.3 | SGP/IRT/E19 - Response time | sgpirt200msE19.a1, sgpirtE19.b1 |
D091215.4 | SGP/IRT/E20 - Response time | sgpirt200msE20.a1, sgpirtE20.b1 |
D091215.5 | SGP/IRT/E13 - Response time | sgpirt200msE13.a1, sgpirtE13.b1 |
D091217.3 | SGP/IRT/E10 - Response time | sgpirt200msE10.a1, sgpirtE10.b1 |
D091218.1 | SGP/IRT/E5 - Response time | sgpirt200msE5.a1, sgpirtE5.b1 |
D110630.1 | SGP/IRT/E12 - Reprocess: Calibration error | sgpirtE12.b1 |
D120717.4 | SGP/IRT/E21 - Instrument failure | sgpirtE21.b1 |
D120810.3 | NSA/IRT/C1 - Serial communication problem | nsairt200msC1.a1, nsairtC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/2005 | 0000 | 04/27/2007 | 1618 |
Subject: | SGP/IRT/E19 - Reprocess: Calibration error |
DataStreams: | sgpirt200msE19.a1, sgpirtE19.b1 |
Description: | The IRT was measuring ~20K higher sky temperatures than at other nearby extended facilies. The calibration of the instrument was incorrect. The problem was corrected by replacing the IRT. The offset in the calibration will be determined and the data will be corrected. |
Measurements: | sgpirtE19.b1:
sgpirt200msE19.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/12/2005 | 1530 | 03/28/2008 | 1722 |
Subject: | SGP/IRT/E15 - Instrument noise problem |
DataStreams: | sgpirt200msE15.a1, sgpirtE15.00, sgpirtE15.b1 |
Description: | The data was much noisier than other nearby sites (a factor of 4-5 times more). The connections and communication and other settings were checked. The IRT was replaced on 1/29/2008 at 17:37 but the response time was incorrectly set to 0.01 s. This problem was corrected when the setting was changed to 0.10 s. |
Measurements: | sgpirtE15.b1:
sgpirt200msE15.a1:
sgpirtE15.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/11/2006 | 0000 | 07/25/2007 | 2315 |
Subject: | SGP/IRT/E13 - Reprocess: Sky temperature bias |
DataStreams: | sgpirt200msE13.a1, sgpirtE13.b1 |
Description: | Measurements of sky temperature, especially those <250K,, were positively biased compared with AERI because there was no compensation for the effect of the emissivity and temperature of the gold mirror. The problem was corrected by changing the IRT emissivity from 1.000 to 0.987, adding an RTD and transmitter electronics to measure the temperature of the mirror, and changing the ambient temperature measurement for internal reference to external mirror temperature. Use sky temperature measurements less than 230K with caution. Biases as large as 30K have been observed when the actual temperature, as measured by AERI, is less than 210 K. |
Measurements: | sgpirtE13.b1:
sgpirt200msE13.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/11/2007 | 1600 | 06/19/2008 | 2035 |
Subject: | SGP/IRT/E16 - reference temperature incorrect |
DataStreams: | sgpirt200msE16.a1, sgpirtE16.b1 |
Description: | The internal reference temperature was unrealistically high, ~360K (90C). The ambient temperature setting was checked. The problem was corrected by replacing the instrument. The sky temperature measurement appears to have been unaffected. |
Measurements: | sgpirtE16.b1:
sgpirt200msE16.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/30/2005 | 0000 | 04/06/2006 | 2359 |
Subject: | SGP/IRT/E6 - Response time |
DataStreams: | sgpirt200msE6.a1, sgpirtE6.b1 |
Description: | The time response of the temperature measurement was changed from 1.0 to 0.1 sec to accommodate the 5Hz sample rate. This produced a 370% decrease in the resolution (to 1.85C at a sky temperature of -50C) and a significant decrease in the signal-to-noise ratio. |
Measurements: | sgpirtE6.b1:
sgpirt200msE6.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/30/2005 | 0000 | 04/04/2006 | 2359 |
Subject: | SGP/IRT/E7 - Response time |
DataStreams: | sgpirt200msE7.a1, sgpirtE7.b1 |
Description: | The time response of the temperature measurement was changed from 1.0 to 0.1 sec to accommodate the 5Hz sample rate. This produced a 370% decrease in the resolution (to 1.85C at a sky temperature of -50C) and a significant decrease in the signal-to-noise ratio. |
Measurements: | sgpirtE7.b1:
sgpirt200msE7.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/30/2005 | 0000 | 03/22/2006 | 2359 |
Subject: | SGP/IRT/E8 - Response time |
DataStreams: | sgpirt200msE8.a1, sgpirtE8.b1 |
Description: | The time response of the temperature measurement was changed from 1.0 to 0.1 sec to accommodate the 5Hz sample rate. This produced a 370% decrease in the resolution (to 1.85C at a sky temperature of -50C) and a significant decrease in the signal-to-noise ratio. |
Measurements: | sgpirt200msE8.a1:
sgpirtE8.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/30/2005 | 0000 | 04/04/2006 | 2359 |
Subject: | SGP/IRT/E9 - Response time |
DataStreams: | sgpirt200msE9.a1, sgpirtE9.b1 |
Description: | The time response of the temperature measurement was changed from 1.0 to 0.1 sec to accommodate the 5Hz sample rate. This produced a 370% decrease in the resolution (to 1.85C at a sky temperature of -50C) and a significant decrease in the signal-to-noise ratio. |
Measurements: | sgpirt200msE9.a1:
sgpirtE9.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/2005 | 0000 | 03/28/2006 | 2359 |
Subject: | SGP/IRT/E11 - Response time |
DataStreams: | sgpirt200msE11.a1, sgpirtE11.b1 |
Description: | The time response of the temperature measurement was changed from 1.0 to 0.1 sec to accommodate the 5Hz sample rate. This caused a 370% decrease in the resolution (to 1.85C at a sky temperature of -50C) and a significant decrease in the signal-to-noise ratio. |
Measurements: | sgpirtE11.b1:
sgpirt200msE11.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/2005 | 0000 | 03/29/2006 | 2359 |
Subject: | SGP/IRT/E16 - Response time |
DataStreams: | sgpirt200msE16.a1, sgpirtE16.b1 |
Description: | The time response of the temperature measurement was changed from 1.0 to 0.1 sec to accommodate the 5Hz sample rate. This caused a 370% decrease in the resolution (to 1.85C at a sky temperature of -50C) and a significant decrease in the signal-to-noise ratio. |
Measurements: | sgpirtE16.b1:
sgpirt200msE16.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/01/2005 | 0000 | 03/30/2006 | 2359 |
Subject: | SGP/IRT/E19 - Response time |
DataStreams: | sgpirt200msE19.a1, sgpirtE19.b1 |
Description: | The time response of the temperature measurement was changed from 1.0 to 0.1 sec to accommodate the 5Hz sample rate. This caused a 370% decrease in the resolution (to 1.85C at a sky temperature of -50C) and a significant decrease in the signal-to-noise ratio. |
Measurements: | sgpirtE19.b1:
sgpirt200msE19.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/07/2005 | 0000 | 03/29/2006 | 2359 |
Subject: | SGP/IRT/E20 - Response time |
DataStreams: | sgpirt200msE20.a1, sgpirtE20.b1 |
Description: | The time response of the temperature measurement was changed from 1.0 to 0.1 sec to accommodate the 5Hz sample rate. This caused a 370% decrease in the resolution (to 1.85C at a sky temperature of -50C) and a significant decrease in the signal-to-noise ratio. |
Measurements: | sgpirtE20.b1:
sgpirt200msE20.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/11/2006 | 0000 | 03/17/2006 | 2359 |
Subject: | SGP/IRT/E13 - Response time |
DataStreams: | sgpirt200msE13.a1, sgpirtE13.b1 |
Description: | The time response of the temperature measurement was changed from 1.0 to 0.1 sec to accommodate the 5Hz sample rate. This caused a 370% decrease in the resolution (to 1.85C at a sky temperature of -50C) and a significant decrease in the signal-to-noise ratio. |
Measurements: | sgpirtE13.b1:
sgpirt200msE13.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/30/2005 | 0000 | 04/05/2006 | 1659 |
Subject: | SGP/IRT/E10 - Response time |
DataStreams: | sgpirt200msE10.a1, sgpirtE10.b1 |
Description: | The time response of the temperature measurement was changed from 1.0 to 0.1 sec to accommodate the 5Hz sample rate. This caused a 370% decrease in the resolution (to 1.85C at a sky temperature of -50C) and a significant decrease in the signal-to-noise ratio. |
Measurements: | sgpirt200msE10.a1:
sgpirtE10.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/30/2005 | 0000 | 11/02/2009 | 0800 |
Subject: | SGP/IRT/E5 - Response time |
DataStreams: | sgpirt200msE5.a1, sgpirtE5.b1 |
Description: | The time response of the temperature measurement was 1.0 sec instead of 0.1 sec (which it should have been to accommodate the 5Hz sample rate). |
Measurements: | sgpirt200msE5.a1:
sgpirtE5.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/12/2009 | 0000 | 05/11/2011 | 1520 |
Subject: | SGP/IRT/E12 - Reprocess: Calibration error |
DataStreams: | sgpirtE12.b1 |
Description: | The measured sky temperature was lower than other SGP facilities because the original calibration, as set be the vendor, was wrong. The IRT was replaced and returned to the vendor. |
Measurements: | sgpirtE12.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
12/07/2011 | 1733 | 05/30/2012 | 1800 |
Subject: | SGP/IRT/E21 - Instrument failure |
DataStreams: | sgpirtE21.b1 |
Description: | Instrument stopped recording data and was replaced on 2/23/2012 but the calibration was wrong, such that the sky temperatures were about 40 K less than at the other EFs. The problem was corrected when the IRT was replces again on 5/30/2012. The data can be corrected if the calibration is determined. |
Measurements: | sgpirtE21.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
06/18/2010 | 2300 | 05/26/2012 | 1800 |
Subject: | NSA/IRT/C1 - Serial communication problem |
DataStreams: | nsairt200msC1.a1, nsairtC1.b1 |
Description: | Data acquisition was intermittent due to poor serial communication, causing many gaps in the datastream. |
Measurements: | nsairt200msC1.a1:
nsairtC1.b1:
|