DQR ID | Subject | Data Streams Affected |
---|---|---|
D070322.2 | SGP/MWRHF/C1 - 90-GHz questionable calibration | sgpmwrhfC1.b1 |
D070322.3 | SGP/MWRHF/C1 - 150-Ghz channel not working | sgpmwrhfC1.b1 |
D070406.1 | SGP/MWRHF/C1 - Instrument removed | sgpmwrhfC1.00, sgpmwrhfC1.b1 |
D071119.1 | SGP/MWRHF/C1 - Dew formation on window | sgpmwrhfC1.b1 |
D110418.6 | SGP/MWRHF/C1 - Reprocessed: Rapid drift in 90 GHz noise diode | sgpmwrhfC1.b1 |
D111118.1 | SGP/MWRHF/C1 - Dew formation on window | sgpmwrhfC1.b1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/03/2006 | 1612 | 03/01/2007 | 1910 |
Subject: | SGP/MWRHF/C1 - 90-GHz questionable calibration |
DataStreams: | sgpmwrhfC1.b1 |
Description: | Between 20061103 and 20070301 one of the parameters thresholds used to select good tip curves used in the calibratio process was not optimal. This resulted in data that have a high standard deviation and a unsatisfactory agreement with model computations. After collecting enough points needed to conduct a model comparison the threshold was changed on March 1. From a limited data analysis for the month pf March it appears that the change in threshold has improved the agreement between measurements and the model. |
Measurements: | sgpmwrhfC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/23/2007 | 1800 | 04/02/2007 | 1910 |
Subject: | SGP/MWRHF/C1 - 150-Ghz channel not working |
DataStreams: | sgpmwrhfC1.b1 |
Description: | Starting on 2/23 the 150-Ghz channel is showing a temperature of 310 K. The suspected cause of the problem is a hardware failure. The instrument was removed and sent for repair on 4/2 |
Measurements: | sgpmwrhfC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
04/02/2007 | 1910 | 07/09/2007 | 1557 |
Subject: | SGP/MWRHF/C1 - Instrument removed |
DataStreams: | sgpmwrhfC1.00, sgpmwrhfC1.b1 |
Description: | Due to a hardware failure the instrument was removed and sent for repairs |
Measurements: | sgpmwrhfC1.00:
sgpmwrhfC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
11/03/2006 | 1612 | 11/27/2007 | 1600 |
Subject: | SGP/MWRHF/C1 - Dew formation on window |
DataStreams: | sgpmwrhfC1.b1 |
Description: | During night time, when the humidity is very high (RH ~ 100%) data are strongly affected by dew formation on the window. This results in a smooth and large (80-150 K) increase of the brightness temperature from early night to sunrise. Data are affected mostly at night. |
Measurements: | sgpmwrhfC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/18/2011 | 0000 | 09/20/2011 | 2359 |
Subject: | SGP/MWRHF/C1 - Reprocessed: Rapid drift in 90 GHz noise diode |
DataStreams: | sgpmwrhfC1.b1 |
Description: | The noise diode of the 90 GHz channel was showing rapid drifts that affected the accuracy of the calibration. Although the algorithm is designed to follow slow drifts in the noise diode, in this case (because the variation was fast) the computed brightness temperature was probably about 4-5 K colder than it should be. Ingest was modified and data were reprocessed and archived in September 2011 |
Measurements: | sgpmwrhfC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
10/11/2011 | 0300 | 11/11/2011 | 1400 |
10/23/2011 | 0500 | 10/23/2011 | 1600 |
10/24/2011 | 0800 | 10/24/2011 | 1400 |
Subject: | SGP/MWRHF/C1 - Dew formation on window |
DataStreams: | sgpmwrhfC1.b1 |
Description: | During the indicated time there was moisture or dew on the radiometer window and the brightness temperatures are too high. The presence of dew can be recognized by a smooth increase in the brightness temperature followed by a smooth decrease over several hours. |
Measurements: | sgpmwrhfC1.b1:
|