Data Quality Reports for Session: 102401 User: lesliemoy Completed: 10/31/2006

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050310.3TWP/MWR/C2 - Heater problemtwpmwrlosC2.b1, twpmwrtipC2.a1, twp5mwravgC2.c1
D050524.2TWP/MWR/C2 - mixer temperaturetwpmwrlosC2.b1, twpmwrtipC2.a1
D050928.2TWP/MWR/C2 - New software version (4.15) installedtwpmwrlosC2.b1, twpmwrtipC2.a1


DQRID : D050310.3
Start DateStart TimeEnd DateEnd Time
02/04/2005234003/14/20051650
Subject:
TWP/MWR/C2 - Heater problem
DataStreams:twpmwrlosC2.b1, twpmwrtipC2.a1, twp5mwravgC2.c1
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 the 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)
  • Mean 23.8 GHz sky brightness temperature(tbsky23)
  • 31.4 GHz Blackbody signal(bb31)
  • Mean total water vapor amount along LOS path(vap)
  • 23.8 GHz sky signal(sky23)
  • Noise diode mount temperature(tknd)
  • Ambient temperature(tkair)
  • Mean IR brightness temperature(ir_temp)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 31.4 GHz blackbody+noise injection signal(bbn31)
  • Sky/Cloud 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)
  • Mean 31.4 GHz sky brightness temperature(tbsky31)
  • Mean total liquid water amount along LOS path(liq)
twpmwrtipC2.a1:
  • 31.4 GHz sky signal(tipsky31)
  • Noise diode mount temperature(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 blackbody+noise injection signal(bbn31)
  • 31.4 GHz Blackbody signal(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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