Data Quality Reports for Session: 123327 User: dmfoper Completed: 10/02/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040211.4TWP/MWR/C2 - thermal instabilitytwpmwrlosC2.b1, twpmwrtipC2.a1
D040920.1TWP/MWR/C2 - Data collection problemtwpmwrC2.00, twpmwrlosC2.b1, twpmwrtipC2.a1
D050310.3TWP/MWR/C2 - Heater problemtwp5mwravgC2.c1, twpmwrlosC2.b1, twpmwrtipC2.a1
D050524.2TWP/MWR/C2 - mixer temperaturetwpmwrlosC2.b1, twpmwrtipC2.a1
D050928.2TWP/MWR/C2 - New software version (4.15) installedtwpmwrlosC2.b1, twpmwrtipC2.a1


DQRID : D040211.4
Start DateStart TimeEnd DateEnd Time
01/27/2004195801/31/20042059
Subject:
TWP/MWR/C2 - thermal instability
DataStreams:twpmwrlosC2.b1, twpmwrtipC2.a1
Description:
The MWR required an unusually long time to reach thermal stability after a 4-day outage 
due to a power failure that damaged the blower/heater assembly. Also during this period, 
the heater, which had been replaced, appears to have been on continously, causing the data 
to be inappropriately flagged.
Measurements:twpmwrlosC2.b1:
  • 31.4 GHz sky signal(sky31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • MWR column precipitable water vapor(vap)
  • 23.8 GHz sky signal(sky23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Averaged total liquid water along LOS path(liq)
twpmwrtipC2.a1:
  • 31.4 GHz sky signal(tipsky31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 23.8 GHz sky signal(tipsky23)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Temperature correction coefficient at 31.4 GHz(tc31)

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DQRID : D040920.1
Start DateStart TimeEnd DateEnd Time
08/27/2004200009/24/20040219
Subject:
TWP/MWR/C2 - Data collection problem
DataStreams:twpmwrC2.00, twpmwrlosC2.b1, twpmwrtipC2.a1
Description:
Large, frequent data gaps occurred due to a failing laptop computer. The problem was 
corrected when a new computer was installed.
Measurements:twpmwrlosC2.b1:
  • 31.4 GHz sky signal(sky31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Mixer kinetic (physical) temperature(tkxc)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Blackbody kinetic temperature(tkbb)
  • lat(lat)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • 31.4 GHz blackbody(bb31)
  • MWR column precipitable water vapor(vap)
  • 23.8 GHz sky signal(sky23)
  • Ambient temperature(tkair)
  • IR Brightness Temperature(ir_temp)
  • base time(base_time)
  • 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)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Averaged total liquid water along LOS path(liq)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • lon(lon)
  • 23.8 GHz Blackbody signal(bb23)
  • (tknd)
  • Actual Azimuth(actaz)
  • Time offset of tweaks from base_time(time_offset)
  • Actual elevation angle(actel)
  • Dummy altitude for Zeb(alt)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • Temperature correction coefficient at 31.4 GHz(tc31)
twpmwrC2.00:
  • null(Raw data stream - documentation not supported)
twpmwrtipC2.a1:
  • 31.4 GHz sky signal(tipsky31)
  • lat(lat)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • Actual Azimuth(actaz)
  • 23.8 GHz sky signal(tipsky23)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Ambient temperature(tkair)
  • Dummy altitude for Zeb(alt)
  • (tknd)
  • base time(base_time)
  • Blackbody kinetic temperature(tkbb)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • Time offset of tweaks from base_time(time_offset)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Actual elevation angle(actel)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 23.8 GHz Blackbody signal(bb23)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • lon(lon)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Mixer kinetic (physical) temperature(tkxc)
  • Temperature correction coefficient at 31.4 GHz(tc31)

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DQRID : D050310.3
Start DateStart TimeEnd DateEnd Time
02/04/2005234003/14/20051650
Subject:
TWP/MWR/C2 - Heater problem
DataStreams:twp5mwravgC2.c1, twpmwrlosC2.b1, twpmwrtipC2.a1
Description:
When the wiring of the air temperature sensor was checked the heater apparently began 
activating too often.
Measurements:twpmwrlosC2.b1:
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
twp5mwravgC2.c1:
  • Fraction of data in averaging interval with water on Teflon window(water_flag_fraction)
twpmwrtipC2.a1:
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)

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DQRID : D050524.2
Start DateStart TimeEnd DateEnd Time
02/04/2005234004/19/20050242
Subject:
TWP/MWR/C2 - mixer temperature
DataStreams:twpmwrlosC2.b1, twpmwrtipC2.a1
Description:
When the wiring of the air temperature sensor was checked the mixer temperature 
unexpectedly decreased 4 degrees. It increased to its normal value when the dielectric window was 
replaced. The problem was probably caused by a loose and/or corroded connection.
Measurements:twpmwrlosC2.b1:
  • Mixer kinetic (physical) temperature(tkxc)
twpmwrtipC2.a1:
  • Mixer kinetic (physical) temperature(tkxc)

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DQRID : D050928.2
Start DateStart TimeEnd DateEnd Time
11/01/2002210109/15/20051424
Subject:
TWP/MWR/C2 - New software version (4.15) installed
DataStreams:twpmwrlosC2.b1, twpmwrtipC2.a1
Description:
A problem began with the installation of MWR.EXE version 4.12 in November 2002. The 
software had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier 
problem.  The software upgrade corrected the earlier problem but introduced a new one that 
caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of 
tip curves, and saturation of CPU usage.  Software versions 4.13 and 4.14 also produced 
these problems.

The new MWR software version (4.15) was installed on 9/15/2005. As a consequence of this 
upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s.
Measurements:twpmwrlosC2.b1:
  • 31.4 GHz sky signal(sky31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Mixer kinetic (physical) temperature(tkxc)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Blackbody kinetic temperature(tkbb)
  • 23.8 GHz Blackbody signal(bb23)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • 31.4 GHz blackbody(bb31)
  • MWR column precipitable water vapor(vap)
  • 23.8 GHz sky signal(sky23)
  • (tknd)
  • Ambient temperature(tkair)
  • IR Brightness Temperature(ir_temp)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Averaged total liquid water along LOS path(liq)
twpmwrtipC2.a1:
  • 31.4 GHz sky signal(tipsky31)
  • (tknd)
  • Blackbody kinetic temperature(tkbb)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 23.8 GHz sky signal(tipsky23)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Mixer kinetic (physical) temperature(tkxc)
  • Ambient temperature(tkair)

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