DQR ID | Subject | Data Streams Affected |
---|
D030312.10 | SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures | sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
D030312.2 | SGP/MWR/B1 - Intermittent Negative Sky Brightness Temperatures | sgpmwrlosB1.a1, sgpmwrlosB1.b1 |
D030312.3 | SGP/MWR/B4 - Intermittent Negative Sky Brightness Temperatures | sgpmwrlosB4.a1, sgpmwrlosB4.b1 |
D030312.4 | SGP/MWR/B5 - Intermittent Negative Sky Brightness Temperatures | sgpmwrlosB5.a1, sgpmwrlosB5.b1 |
D030312.5 | SGP/MWR/B6 - Intermittent Negative Sky Brightness Temperatures | sgpmwrlosB6.a1, sgpmwrlosB6.b1 |
D030822.2 | SGP/MWR/B1 - min/max/delta values incorrect | sgpmwrlosB1.b1 |
D030822.3 | SGP/MWR/B4 - min/max/delta values incorrect | sgpmwrlosB4.b1 |
D030822.4 | SGP/MWR/B5 - min/max/delta values incorrect | sgpmwrlosB5.b1 |
D030822.5 | SGP/MWR/B6 - min/max/delta values incorrect | sgpmwrlosB6.b1 |
D040824.1 | SGP/MWR/C1 - Wet window flag "on" more frequently than expected | sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
D080103.2 | SGP/MWR/C1 - Missing data | sgpmwrlosC1.b1 |
Subject: | SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1
|
Description: | Several related and recurring problems with the SGP MWRs have been
reported dating back to 1999. These problems were due to the
occurrence of blackbody signals (in counts) that were half of those
expected. The symptoms included noisy data (especially at Purcell),
spikes in the data (especially at Vici), negative brightness
temperatures, and apparent loss of serial communication between the
computer and the radiometer, which results in a self-termination of the
MWR program (especially at the CF).
Because these all initially appeared to be hardware-related problems,
the instrument mentor and SGP site operations personnel (1) repeatedly
cleaned and replaced the fiber optic comm. components, (2) swapped
radiometers, (3) sent radiometers back to Radiometrics for evaluation
(which has not revealed any instrument problems), and (4) reconfigured
the computer's operating system. Despite several attempts to isolate
and correct it, the problem persisted.
It became apparent that some component of the Windows98 configuration
conflicted with the DOS-based MWR program or affected the serial port
or the contents of the serial port buffer. This problem was finally
corrected by upgrading the MWR software with a new Windows-compatible
program. |
Measurements: | sgp5mwravgC1.c1: - Averaged total liquid water along LOS path(liq)
- Sky brightness temperature at 23.8 GHz(tbsky23)
- MWR column precipitable water vapor(vap)
- Sky brightness temperature at 31.4 GHz(tbsky31)
sgpmwrlosC1.b1: - Sky brightness temperature at 31.4 GHz(tbsky31)
- Averaged total liquid water along LOS path(liq)
- MWR column precipitable water vapor(vap)
- Sky brightness temperature at 23.8 GHz(tbsky23)
sgp1mwravgC1.c1: - Sky brightness temperature at 23.8 GHz(tbsky23)
- Averaged total liquid water along LOS path(liq)
- MWR column precipitable water vapor(vap)
- Sky brightness temperature at 31.4 GHz(tbsky31)
sgpmwrlosC1.a1: - MWR column precipitable water vapor(vap)
- Sky brightness temperature at 23.8 GHz(tbsky23)
- Sky brightness temperature at 31.4 GHz(tbsky31)
- Averaged total liquid water along LOS path(liq)
|
Subject: | SGP/MWR/B1 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | sgpmwrlosB1.a1, sgpmwrlosB1.b1
|
Description: | Several related and recurring problems with the SGP MWRs have been
reported dating back to 1999. These problems were due to the
occurrence of blackbody signals (in counts) that were half of those
expected. The symptoms included noisy data (especially at Purcell),
spikes in the data (especially at Vici), negative brightness
temperatures, and apparent loss of serial communication between the
computer and the radiometer, which results in a self-termination of the
MWR program (especially at the CF).
Because these all initially appeared to be hardware-related problems,
the instrument mentor and SGP site operations personnel (1) repeatedly
cleaned and replaced the fiber optic comm. components, (2) swapped
radiometers, (3) sent radiometers back to Radiometrics for evaluation
(which has not revealed any instrument problems), and (4) reconfigured
the computer's operating system. Despite several attempts to isolate
and correct it, the problem persisted.
It became apparent that some component of the Windows98 configuration
conflicted with the DOS-based MWR program or affected the serial port
or the contents of the serial port buffer. This problem was finally
corrected by upgrading the MWR software with a new Windows-compatible
program. |
Measurements: | sgpmwrlosB1.a1: - Sky brightness temperature at 23.8 GHz(tbsky23)
- Sky brightness temperature at 31.4 GHz(tbsky31)
- MWR column precipitable water vapor(vap)
- Averaged total liquid water along LOS path(liq)
sgpmwrlosB1.b1: - Averaged total liquid water along LOS path(liq)
- Sky brightness temperature at 31.4 GHz(tbsky31)
- MWR column precipitable water vapor(vap)
- Sky brightness temperature at 23.8 GHz(tbsky23)
|
Subject: | SGP/MWR/B4 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | sgpmwrlosB4.a1, sgpmwrlosB4.b1
|
Description: | Several related and recurring problems with the SGP MWRs have been
reported dating back to 1999. These problems were due to the
occurrence of blackbody signals (in counts) that were half of those
expected. The symptoms included noisy data (especially at Purcell),
spikes in the data (especially at Vici), negative brightness
temperatures, and apparent loss of serial communication between the
computer and the radiometer, which results in a self-termination of the
MWR program (especially at the CF).
Because these all initially appeared to be hardware-related problems,
the instrument mentor and SGP site operations personnel (1) repeatedly
cleaned and replaced the fiber optic comm. components, (2) swapped
radiometers, (3) sent radiometers back to Radiometrics for evaluation
(which has not revealed any instrument problems), and (4) reconfigured
the computer's operating system. Despite several attempts to isolate
and correct it, the problem persisted.
It became apparent that some component of the Windows98 configuration
conflicted with the DOS-based MWR program or affected the serial port
or the contents of the serial port buffer. This problem was finally
corrected by upgrading the MWR software with a new Windows-compatible
program. |
Measurements: | sgpmwrlosB4.b1: - Averaged total liquid water along LOS path(liq)
- Sky brightness temperature at 31.4 GHz(tbsky31)
- Sky brightness temperature at 23.8 GHz(tbsky23)
- MWR column precipitable water vapor(vap)
sgpmwrlosB4.a1: - MWR column precipitable water vapor(vap)
- Sky brightness temperature at 31.4 GHz(tbsky31)
- Sky brightness temperature at 23.8 GHz(tbsky23)
- Averaged total liquid water along LOS path(liq)
|
Subject: | SGP/MWR/B5 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | sgpmwrlosB5.a1, sgpmwrlosB5.b1
|
Description: | Several related and recurring problems with the SGP MWRs have been
reported dating back to 1999. These problems were due to the
occurrence of blackbody signals (in counts) that were half of those
expected. The symptoms included noisy data (especially at Purcell),
spikes in the data (especially at Vici), negative brightness
temperatures, and apparent loss of serial communication between the
computer and the radiometer, which results in a self-termination of the
MWR program (especially at the CF).
Because these all initially appeared to be hardware-related problems,
the instrument mentor and SGP site operations personnel (1) repeatedly
cleaned and replaced the fiber optic comm. components, (2) swapped
radiometers, (3) sent radiometers back to Radiometrics for evaluation
(which has not revealed any instrument problems), and (4) reconfigured
the computer's operating system. Despite several attempts to isolate
and correct it, the problem persisted.
It became apparent that some component of the Windows98 configuration
conflicted with the DOS-based MWR program or affected the serial port
or the contents of the serial port buffer. This problem was finally
corrected by upgrading the MWR software with a new Windows-compatible
program. |
Measurements: | sgpmwrlosB5.a1: - MWR column precipitable water vapor(vap)
- Sky brightness temperature at 31.4 GHz(tbsky31)
- Sky brightness temperature at 23.8 GHz(tbsky23)
- Averaged total liquid water along LOS path(liq)
sgpmwrlosB5.b1: - Sky brightness temperature at 31.4 GHz(tbsky31)
- Averaged total liquid water along LOS path(liq)
- MWR column precipitable water vapor(vap)
- Sky brightness temperature at 23.8 GHz(tbsky23)
|
Subject: | SGP/MWR/B6 - Intermittent Negative Sky Brightness Temperatures |
DataStreams: | sgpmwrlosB6.a1, sgpmwrlosB6.b1
|
Description: | Several related and recurring problems with the SGP MWRs have been
reported dating back to 1999. These problems were due to the
occurrence of blackbody signals (in counts) that were half of those
expected. The symptoms included noisy data (especially at Purcell),
spikes in the data (especially at Vici), negative brightness
temperatures, and apparent loss of serial communication between the
computer and the radiometer, which results in a self-termination of the
MWR program (especially at the CF).
Because these all initially appeared to be hardware-related problems,
the instrument mentor and SGP site operations personnel (1) repeatedly
cleaned and replaced the fiber optic comm. components, (2) swapped
radiometers, (3) sent radiometers back to Radiometrics for evaluation
(which has not revealed any instrument problems), and (4) reconfigured
the computer's operating system. Despite several attempts to isolate
and correct it, the problem persisted.
It became apparent that some component of the Windows98 configuration
conflicted with the DOS-based MWR program or affected the serial port
or the contents of the serial port buffer. This problem was finally
corrected by upgrading the MWR software with a new Windows-compatible
program. |
Measurements: | sgpmwrlosB6.b1: - MWR column precipitable water vapor(vap)
- Sky brightness temperature at 23.8 GHz(tbsky23)
- Sky brightness temperature at 31.4 GHz(tbsky31)
- Averaged total liquid water along LOS path(liq)
sgpmwrlosB6.a1: - Averaged total liquid water along LOS path(liq)
- MWR column precipitable water vapor(vap)
- Sky brightness temperature at 23.8 GHz(tbsky23)
- Sky brightness temperature at 31.4 GHz(tbsky31)
|