DQR ID | Subject | Data Streams Affected |
---|
D001122.1 | SGP/MWR/C1 - calibration checks | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D001205.1 | SGP/MWR/C1 - Time drift | sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1 |
D010215.5 | SGP/MWR/C1 - IRT failure | sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
D030312.10 | SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures | sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
D040824.1 | SGP/MWR/C1 - Wet window flag "on" more frequently than expected | sgpmwrlosC1.a1, sgpmwrlosC1.b1 |
D990916.1 | SGP/MWR/B1/B4/B5/B6 - data file split at 23:59 | sgpmwrlosB1.a1, sgpmwrlosB1.b1, sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrlosB5.a1, sgpmwrlosB5.b1, sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB1.a1, sgpmwrtipB4.a1, sgpmwrtipB5.a1, sgpmwrtipB6.a1 |
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)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- MWR column precipitable water vapor(vap)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
sgpmwrlosC1.b1: - Mean 31.4 GHz sky brightness temperature(tbsky31)
- Averaged total liquid water along LOS path(liq)
- MWR column precipitable water vapor(vap)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
sgp1mwravgC1.c1: - Mean 23.8 GHz sky brightness temperature(tbsky23)
- Averaged total liquid water along LOS path(liq)
- MWR column precipitable water vapor(vap)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
sgpmwrlosC1.a1: - MWR column precipitable water vapor(vap)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- Averaged total liquid water along LOS path(liq)
|
Subject: | SGP/MWR/B1/B4/B5/B6 - data file split at 23:59 |
DataStreams: | sgpmwrlosB1.a1, sgpmwrlosB1.b1, sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrlosB5.a1, sgpmwrlosB5.b1, sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB1.a1, sgpmwrtipB4.a1, sgpmwrtipB5.a1, sgpmwrtipB6.a1
|
Description: | A problem with the MWR operating software has been corrected. However, several files were
generated that contain one record of data collected at midnight but labeled with the
previous day's date. |
Measurements: | sgpmwrlosB5.a1: - Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- Time offset of tweaks from base_time(time_offset)
- Temperature correction coefficient at 23.8 GHz(tc23)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- (tknd)
- IR Brightness Temperature(ir_temp)
- MWR column precipitable water vapor(vap)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- Ambient temperature(tkair)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- 31.4 GHz blackbody(bb31)
- 23.8 GHz sky signal(sky23)
- Temperature correction coefficient at 31.4 GHz(tc31)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- base time(base_time)
- 23.8 GHz Blackbody signal(bb23)
- Blackbody kinetic temperature(tkbb)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- 31.4 GHz sky signal(sky31)
- Averaged total liquid water along LOS path(liq)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Mixer kinetic (physical) temperature(tkxc)
sgpmwrlosB1.a1: - Water on Teflon window (1=WET, 0=DRY)(wet_window)
- (tknd)
- Averaged total liquid water along LOS path(liq)
- Blackbody kinetic temperature(tkbb)
- Time offset of tweaks from base_time(time_offset)
- 31.4 GHz blackbody(bb31)
- 23.8 GHz sky signal(sky23)
- Ambient temperature(tkair)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Mixer kinetic (physical) temperature(tkxc)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- MWR column precipitable water vapor(vap)
- Temperature correction coefficient at 31.4 GHz(tc31)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- Temperature correction coefficient at 23.8 GHz(tc23)
- base time(base_time)
- IR Brightness Temperature(ir_temp)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- 31.4 GHz sky signal(sky31)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- 23.8 GHz Blackbody signal(bb23)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
sgpmwrtipB6.a1: - Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- 31.4 GHz goodness-of-fit coefficient(r31)
- 31.4 GHz sky signal(tipsky31)
- Blackbody kinetic temperature(tkbb)
- Temperature correction coefficient at 23.8 GHz(tc23)
- Actual Azimuth(actaz)
- Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
- Temperature correction coefficient at 31.4 GHz(tc31)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Time offset of tweaks from base_time(time_offset)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- (tknd)
- 23.8 GHz Blackbody signal(bb23)
- Mixer kinetic (physical) temperature(tkxc)
- Ambient temperature(tkair)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- base time(base_time)
- 23.8 GHz goodness-of-fit coefficient(r23)
- 23.8 GHz sky signal(tipsky23)
- Actual elevation angle(actel)
- 31.4 GHz blackbody(bb31)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
sgpmwrlosB6.b1: - 23.8 GHz Blackbody signal(bb23)
- MWR column precipitable water vapor(vap)
- 31.4 GHz blackbody(bb31)
- 31.4 GHz sky signal(sky31)
- Averaged total liquid water along LOS path(liq)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- IR Brightness Temperature(ir_temp)
- base time(base_time)
- 23.8 GHz sky signal(sky23)
- Time offset of tweaks from base_time(time_offset)
- Mixer kinetic (physical) temperature(tkxc)
- (tknd)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- Temperature correction coefficient at 31.4 GHz(tc31)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Ambient temperature(tkair)
- Blackbody kinetic temperature(tkbb)
- Temperature correction coefficient at 23.8 GHz(tc23)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
sgpmwrlosB4.b1: - Time offset of tweaks from base_time(time_offset)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- MWR column precipitable water vapor(vap)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- Mixer kinetic (physical) temperature(tkxc)
- Averaged total liquid water along LOS path(liq)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- 31.4 GHz blackbody(bb31)
- (tknd)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- Blackbody kinetic temperature(tkbb)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- Temperature correction coefficient at 23.8 GHz(tc23)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- 31.4 GHz sky signal(sky31)
- 23.8 GHz Blackbody signal(bb23)
- Ambient temperature(tkair)
- 23.8 GHz sky signal(sky23)
- Temperature correction coefficient at 31.4 GHz(tc31)
- IR Brightness Temperature(ir_temp)
- base time(base_time)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
sgpmwrtipB4.a1: - 23.8 GHz sky signal(tipsky23)
- 31.4 GHz sky signal(tipsky31)
- 23.8 GHz goodness-of-fit coefficient(r23)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Time offset of tweaks from base_time(time_offset)
- Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- Actual elevation angle(actel)
- 31.4 GHz blackbody(bb31)
- base time(base_time)
- Mixer kinetic (physical) temperature(tkxc)
- Temperature correction coefficient at 31.4 GHz(tc31)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Blackbody kinetic temperature(tkbb)
- Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- Temperature correction coefficient at 23.8 GHz(tc23)
- (tknd)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- Actual Azimuth(actaz)
- 31.4 GHz goodness-of-fit coefficient(r31)
- 23.8 GHz Blackbody signal(bb23)
- Ambient temperature(tkair)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
sgpmwrtipB5.a1: - 23.8 GHz Blackbody signal(bb23)
- Temperature correction coefficient at 31.4 GHz(tc31)
- Ambient temperature(tkair)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- 31.4 GHz blackbody(bb31)
- Time offset of tweaks from base_time(time_offset)
- Actual Azimuth(actaz)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- 31.4 GHz sky signal(tipsky31)
- 31.4 GHz goodness-of-fit coefficient(r31)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- Mixer kinetic (physical) temperature(tkxc)
- Actual elevation angle(actel)
- Blackbody kinetic temperature(tkbb)
- 23.8 GHz sky signal(tipsky23)
- Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
- base time(base_time)
- 23.8 GHz goodness-of-fit coefficient(r23)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- (tknd)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- Temperature correction coefficient at 23.8 GHz(tc23)
- Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
- 31.4 GHz blac2body+noise injection signal(bbn31)
sgpmwrlosB1.b1: - Ambient temperature(tkair)
- IR Brightness Temperature(ir_temp)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- 31.4 GHz blackbody(bb31)
- Mixer kinetic (physical) temperature(tkxc)
- Blackbody kinetic temperature(tkbb)
- 31.4 GHz sky signal(sky31)
- Time offset of tweaks from base_time(time_offset)
- base time(base_time)
- 23.8 GHz sky signal(sky23)
- Temperature correction coefficient at 23.8 GHz(tc23)
- Averaged total liquid water along LOS path(liq)
- (tknd)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- Temperature correction coefficient at 31.4 GHz(tc31)
- 23.8 GHz Blackbody signal(bb23)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- MWR column precipitable water vapor(vap)
sgpmwrtipB1.a1: - Actual elevation angle(actel)
- 31.4 GHz blackbody(bb31)
- Actual Azimuth(actaz)
- Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
- Temperature correction coefficient at 31.4 GHz(tc31)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- Blackbody kinetic temperature(tkbb)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- 23.8 GHz Blackbody signal(bb23)
- Mixer kinetic (physical) temperature(tkxc)
- 23.8 GHz sky signal(tipsky23)
- Time offset of tweaks from base_time(time_offset)
- (tknd)
- 31.4 GHz sky signal(tipsky31)
- 31.4 GHz goodness-of-fit coefficient(r31)
- Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
- Temperature correction coefficient at 23.8 GHz(tc23)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Ambient temperature(tkair)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- 23.8 GHz goodness-of-fit coefficient(r23)
- base time(base_time)
sgpmwrlosB4.a1: - IR Brightness Temperature(ir_temp)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- Ambient temperature(tkair)
- Averaged total liquid water along LOS path(liq)
- 31.4 GHz blackbody(bb31)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- Time offset of tweaks from base_time(time_offset)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Blackbody kinetic temperature(tkbb)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- Mixer kinetic (physical) temperature(tkxc)
- Temperature correction coefficient at 31.4 GHz(tc31)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- 23.8 GHz sky signal(sky23)
- MWR column precipitable water vapor(vap)
- base time(base_time)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- 31.4 GHz sky signal(sky31)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- Temperature correction coefficient at 23.8 GHz(tc23)
- (tknd)
- 23.8 GHz Blackbody signal(bb23)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- 23.8 GHz blackbody+noise injection signal(bbn23)
sgpmwrlosB5.b1: - Temperature correction coefficient at 31.4 GHz(tc31)
- Time offset of tweaks from base_time(time_offset)
- IR Brightness Temperature(ir_temp)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- base time(base_time)
- MWR column precipitable water vapor(vap)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- Ambient temperature(tkair)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Temperature correction coefficient at 23.8 GHz(tc23)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- 31.4 GHz sky signal(sky31)
- Mixer kinetic (physical) temperature(tkxc)
- Blackbody kinetic temperature(tkbb)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- 23.8 GHz sky signal(sky23)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- Averaged total liquid water along LOS path(liq)
- 31.4 GHz blackbody(bb31)
- (tknd)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- 23.8 GHz Blackbody signal(bb23)
sgpmwrlosB6.a1: - IR Brightness Temperature(ir_temp)
- Temperature correction coefficient at 23.8 GHz(tc23)
- Water on Teflon window (1=WET, 0=DRY)(wet_window)
- Mean 23.8 GHz sky brightness temperature(tbsky23)
- Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
- Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
- Ambient temperature(tkair)
- 23.8 GHz Blackbody signal(bb23)
- Time offset of tweaks from base_time(time_offset)
- Blackbody kinetic temperature(tkbb)
- base time(base_time)
- Averaged total liquid water along LOS path(liq)
- MWR column precipitable water vapor(vap)
- Mean 31.4 GHz sky brightness temperature(tbsky31)
- 31.4 GHz blackbody(bb31)
- 31.4 GHz blac2body+noise injection signal(bbn31)
- 23.8 GHz sky signal(sky23)
- 23.8 GHz blackbody+noise injection signal(bbn23)
- (tknd)
- Temperature correction coefficient at 31.4 GHz(tc31)
- Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
- Mixer kinetic (physical) temperature(tkxc)
- Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
- 31.4 GHz sky signal(sky31)
|