| DQR ID | Subject | Data Streams Affected |
|---|
| D080828.1 | HFE/MWR/M1 - Insufficient calibration stability | hfemwrlosM1.b1, hfemwrtipM1.a1 |
| D090311.3 | HFE/MWR/M1 - Missing data | hfemwrlosM1.b1, hfemwrtipM1.a1 |
| D090522.1 | GRW/MWR/M1 - Loose mirror | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| D100224.6 | GRW/MWR/M1 - Reprocess: Biased LWP retrievals-Updated retrieval coefficients | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| D100326.2 | GRW/MWR/M1 - Incorrect ambient temperature | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| D100716.1 | GRW/MWR/M1 - Incorrect instrument computer set-up | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| D100729.4 | HFE/WACR/M1 - Reprocess: Reflectivity and Height Offsets | hfewacrM1.b1, hfewacrspeccmaskxpolM1.a0, hfewacrspeccmaskcopolM1.a0 |
| D100830.1 | GRW/MWR/M1 - Erratic brightness temperature | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| D100830.3 | GRW/MWR/M1 - Missing data | grwmwrlosM1.b1, grwmwrtipM1.a1 |
| Subject: | GRW/MWR/M1 - Loose mirror |
| DataStreams: | grwmwrlosM1.b1, grwmwrtipM1.a1
|
| Description: | The data from the MWR were suspicious and became progressively worse. The problem was
traced back to the fact that the screw that keeps the mirror in place had become loose and
the mirror was freely rotating.
The mirror was tightened on 6/9/2009, however the measurements were noisy until 6/16, when
the instrument was rebooted and all the connections checked.
Measurements between 5/1 and 6/9 should not be used. Data between 6/9 and 6/16 are usable,
although they are very noisy. |
| Measurements: | grwmwrtipM1.a1: - vaptip
- bb31
- tbsky23tip
- bbn23
- bbn31
- tbsky31tip
- tipsky23
- bb23
- tipsky31
- liqtip
grwmwrlosM1.b1: - sky23
- bbn23
- Total water vapor along LOS path(vap)
- bbn31
- Total liquid water along LOS path(liq)
- sky31
- 31.4 GHz sky brightness temperature(tbsky31)
- bb31
- Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
- bb23
|
| Subject: | GRW/MWR/M1 - Incorrect instrument computer set-up |
| DataStreams: | grwmwrlosM1.b1, grwmwrtipM1.a1
|
| Description: | Starting late on 07/11 the instrument began to have very brief (< 1 min) data outages
every few hours. By 07/12 data had become noticeably incorrect, particularly the PWV, LWP,
TB23, and TB31. At ~17 Z on 0713 the missing data / no data available flags became more
frequent.
The problem was identified as improper settings of the instrument computer and was solved
on 8/9. |
| Measurements: | grwmwrtipM1.a1: - tnd_nom31
- vaptip
- tnd31I
- r23
- tc23
- tbsky23tip
- tnd_nom23
- tbsky31tip
- tc31
- tnd23I
- r31
- tnd31
- tnd23
- liqtip
grwmwrlosM1.b1: - Total water vapor along LOS path(vap)
- tnd31
- Total liquid water along LOS path(liq)
- tnd23
- tnd_nom31
- 31.4 GHz sky brightness temperature(tbsky31)
- tnd_nom23
- Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
- tc23
- tc31
|
| Subject: | HFE/WACR/M1 - Reprocess: Reflectivity and Height Offsets |
| DataStreams: | hfewacrM1.b1, hfewacrspeccmaskxpolM1.a0, hfewacrspeccmaskcopolM1.a0
|
| Description: | The instrument vendor has informed us of a range (height) offset of 13 m and has provided
an updated reflectivity calibration. All values reported for 'Reflectivity' are
approximately 3 dB too low. In addition, the Reflectivity in the first and fourth range gates
(starting from the surface) need to be further corrected by an additional 2.7 and -0.9 dB,
respectively. The 'height' field values are 13.33 m too low. The data will be reprocessed
to correct these problems. |
| Measurements: | hfewacrM1.b1: - heights
- Cloud, reflectivity, at altitude(Reflectivity)
hfewacrspeccmaskcopolM1.a0: - Temp_Chiller_Supply
- Temp_Antenna_Top
- Temp_Chiller
- Cloud, doppler spectrum, at altitude, 8-mm radar(Spectra)
- Temp_LNA
- Cloud, reflectivity, at altitude(Reflectivity)
- Temp_modulator
- SignalToNoiseRatio
- PowerAmbientLoad
- MMCR Mean Doppler Velocity(MeanDopplerVelocity)
- base_time
- time_offset
- Temp_Future
- Temp_ambient
- wacr_status
- Temp_Hot
- LocatorMask
- PowerTransmitDriver
- Temp_Chiller_Return
- Temp_EIKA
- Temp_Antenna_Bottom
- Temp_Computer_Enclosure
- heights
- Temp_Outside
- txpower
- MMCR Spectral Width(SpectralWidth)
- Temp_Modulator_Control
- velocity_bins
- PowerHotLoad
- Noise
hfewacrspeccmaskxpolM1.a0: - Temp_Chiller
- MMCR Spectral Width(SpectralWidth)
- Temp_Computer_Enclosure
- Noise
- Temp_Chiller_Supply
- Cloud, reflectivity, at altitude(Reflectivity)
- Temp_ambient
- base_time
- PowerAmbientLoad
- Temp_Future
- Temp_Outside
- LocatorMask
- MMCR Mean Doppler Velocity(MeanDopplerVelocity)
- SignalToNoiseRatio
- velocity_bins
- Temp_Modulator_Control
- Cloud, doppler spectrum, at altitude, 8-mm radar(Spectra)
- Temp_Chiller_Return
- Temp_modulator
- PowerTransmitDriver
- time_offset
- PowerHotLoad
- Temp_EIKA
- wacr_status
- Temp_Hot
- heights
- Temp_Antenna_Top
- Temp_LNA
- Temp_Antenna_Bottom
- txpower
|
| Subject: | GRW/MWR/M1 - Erratic brightness temperature |
| DataStreams: | grwmwrlosM1.b1, grwmwrtipM1.a1
|
| Description: | Around 12 Z on 7/20 both the PWV and 23.8 GHz brightness temp values began to diverge from
those of the MWRP. By 7/22 both the LWP and 31.4 GHz brightness temp had followed suit.
At 0600 Z on 7/22 multiple (10-20), brief (<=1 min) data outages began appearing hourly.
The problem persisted intermittently until 8/9.
On 8/9, changes in the settings of the computer restored the proper functionality of the
MWR software. |
| Measurements: | grwmwrtipM1.a1: - tnd_nom31
- vaptip
- tnd31I
- tc23
- tbsky23tip
- tnd_nom23
- tbsky31tip
- tc31
- tnd23I
- tnd31
- tnd23
- liqtip
grwmwrlosM1.b1: - Total water vapor along LOS path(vap)
- tnd31
- Total liquid water along LOS path(liq)
- tnd23
- tnd_nom31
- 31.4 GHz sky brightness temperature(tbsky31)
- tnd_nom23
- Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
- tc23
- tc31
|