Data Quality Reports for Session: 114032 User: rutan Completed: 09/09/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D010227.4TWP/MWR/C2 - Excessive wet_window flagstwpmwrlosC2.b1, twpmwrtipC2.a1
D040220.1TWP/MWR/C1 - wrong azimuthtwpmwrlosC1.b1
D061121.1TWP/MWR/C2 - Missing DatatwpmwrlosC2.b1
D070105.1TWP/MWR/C1 - Missing datatwpmwrlosC1.b1


DQRID : D010227.4
Start DateStart TimeEnd DateEnd Time
01/16/1999090003/08/19992100
11/16/1999090002/09/20002100
12/07/2000000012/17/20002359
Subject:
TWP/MWR/C2 - Excessive wet_window flags
DataStreams:twpmwrlosC2.b1, twpmwrtipC2.a1
Description:
The wet_window flag is set high more than expected from the measured value of liquid water 
path. This may be caused by dew or, if the heater sensivity is slightly misadjusted, by 
the diurnal variation in ambient temperature.

The "wet_window" flag is an indicator of moisture on the MWR window which invalidates the 
measurements of precipitable water vapor and liquid water path. Sometimes this flag can 
be incorrectly set high or low if the heater sensivity is slightly misadjusted. The heater 
adjustment is a resistive device that is dependent on ambient temperature. Another 
indicator of moisture on the window is unreasonably high ( > 3*liquid_retrieval_rms_accuracy ) 
values of "liq".
Measurements:twpmwrlosC2.b1:
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
twpmwrtipC2.a1:
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)

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DQRID : D040220.1
Start DateStart TimeEnd DateEnd Time
10/11/1996000002/18/20042250
Subject:
TWP/MWR/C1 - wrong azimuth
DataStreams:twpmwrlosC1.b1
Description:
The MWR was initially installed at an azimuth angle defined as 180 degrees but the value 
in the configuration file was not changed from the default of 0 degrees. In examining 
photos taken during the installation of the AWS tower, I noticed that the MWR was rotated 
opposite the normal orientation. The value in the configuration file was changed to reflect 
the actual azimuth of the instrument.
Measurements:twpmwrlosC1.b1:
  • Actual Azimuth(actaz)

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DQRID : D061121.1
Start DateStart TimeEnd DateEnd Time
11/02/1998211211/06/19982140
07/02/2000200007/04/20000047
02/09/2002230002/11/20022300
01/23/2004110001/27/20041957
05/27/2005114305/29/20052132
Subject:
TWP/MWR/C2 - Missing Data
DataStreams:twpmwrlosC2.b1
Description:
Data are missing and unrecoverable.
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)
  • lat(lat)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • lon(lon)
  • 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)
  • Actual Azimuth(actaz)
  • Ambient temperature(tkair)
  • IR Brightness Temperature(ir_temp)
  • Time offset of tweaks from base_time(time_offset)
  • Actual elevation angle(actel)
  • base time(base_time)
  • Dummy altitude for Zeb(alt)
  • 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)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • 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)

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DQRID : D070105.1
Start DateStart TimeEnd DateEnd Time
12/09/1996233812/11/19960003
02/28/1997011806/27/19972048
11/06/1997195911/12/19971800
01/05/1998020401/08/19982048
04/21/1998001704/29/19981803
09/13/1998075909/20/19980900
11/20/1998222611/27/19981026
02/27/1999060003/02/19990159
03/06/1999080003/09/19991807
09/03/1999030009/10/19990400
10/01/1999090010/18/19990000
10/20/1999050010/22/19990600
01/14/2000080001/16/20000342
01/14/2006125801/16/20060638
Subject:
TWP/MWR/C1 - Missing data
DataStreams:twpmwrlosC1.b1
Description:
Data are missing and unrecoverable.
Measurements:twpmwrlosC1.b1:
  • (tknd)
  • 31.4 GHz blackbody(bb31)
  • Mixer kinetic (physical) temperature(tkxc)
  • 31.4 GHz sky signal(sky31)
  • base time(base_time)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Dummy altitude for Zeb(alt)
  • Actual elevation angle(actel)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • IR Brightness Temperature(ir_temp)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • MWR column precipitable water vapor(vap)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Ambient temperature(tkair)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Time offset of tweaks from base_time(time_offset)
  • Averaged total liquid water along LOS path(liq)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • Actual Azimuth(actaz)
  • 23.8 GHz Blackbody signal(bb23)
  • 23.8 GHz sky signal(sky23)
  • lon(lon)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Blackbody kinetic temperature(tkbb)
  • lat(lat)

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END OF DATA