Data Quality Reports for Session: 148635 User: gdeboer Completed: 03/12/2013

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D030507.3SGP/SONDE/C1 - Broken temperature sensorssgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D050811.6PYE/SONDE/M1 - Broken RH sensorpyesondewnpnM1.b1
D050823.1PYE/SONDE/M1 - Bad temperature and RHpyesondewnpnM1.b1
D050912.3PYE/SONDE/M1 - Bad RH sensorpyesondewnpnM1.b1
D050912.4PYE/SONDE/M1 - Bad RH sensorpyesondewnpnM1.b1
D060928.3SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdrysgpsondewnpnC1.b1
D090224.3SGP/SONDE/C1 - Suspect RH valuessgpsondewnpnC1.b1


DQRID : D030507.3
Start DateStart TimeEnd DateEnd Time
05/04/2003113005/04/20031145
05/04/2003233005/05/20030116
Subject:
SGP/SONDE/C1 - Broken temperature sensors
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
The temperature sensors broke at launch on both of these soundings.  All of the 
temperature-related data (tdry, rh, dp) are incorrect.
Measurements:sgpsondewnpnC1.b1:
  • Dry Bulb Temperature(tdry)
  • Dewpoint Temperature(dp)
  • Humidity, relative(rh)
sgpsondewnpnC1.a1:
  • Dry Bulb Temperature(tdry)
  • Dewpoint Temperature(dp)
  • Humidity, relative(rh)

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DQRID : D050811.6
Start DateStart TimeEnd DateEnd Time
08/02/2005112908/02/20051225
Subject:
PYE/SONDE/M1 - Broken RH sensor
DataStreams:pyesondewnpnM1.b1
Description:
One of the RH sensors on this radiosonde was bad.  The RH oscillates rapidly between near 
0 and ambient up to approximately 11 km.  The near-zero values are incorrect.
Measurements:pyesondewnpnM1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)

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DQRID : D050823.1
Start DateStart TimeEnd DateEnd Time
06/30/2005052806/30/20050711
Subject:
PYE/SONDE/M1 - Bad temperature and RH
DataStreams:pyesondewnpnM1.b1
Description:
The temperature appears to be approximately 10 degC too high during the entire sounding.  
This also causes the RH to be too low.  Most likely the problem was a bad temperature 
sensor.
Measurements:pyesondewnpnM1.b1:
  • Humidity, relative(rh)
  • Dry Bulb Temperature(tdry)
  • Dewpoint Temperature(dp)

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DQRID : D050912.3
Start DateStart TimeEnd DateEnd Time
08/31/2005113008/31/20051140
Subject:
PYE/SONDE/M1 - Bad RH sensor
DataStreams:pyesondewnpnM1.b1
Description:
The RH sensor heating circuit failed on this sounding.  RH values during the first part of 
the sounding oscillate between a reasonable value and a very low value.  It appears that 
(a) the heating was out of phase, and (b) incorrect values were being reported during 
the first 10 minutes or so of flight.
Measurements:pyesondewnpnM1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)

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DQRID : D050912.4
Start DateStart TimeEnd DateEnd Time
08/29/2005112808/29/20051340
Subject:
PYE/SONDE/M1 - Bad RH sensor
DataStreams:pyesondewnpnM1.b1
Description:
Two problems here - failure of the RH sensor heating circuit and a bad RH sensor.
Measurements:pyesondewnpnM1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)

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DQRID : D060928.3
Start DateStart TimeEnd DateEnd Time
09/28/2006172812/31/99992359
Subject:
SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry
DataStreams:sgpsondewnpnC1.b1
Description:
The output precision of the following variables was increased 20060928

alt  changed from 1m to 0.1m
dp   changed from 0.1degC to 0.01degC
pres changed from 0.1 hPa to 0.01 hPa
RH   changed from 1%RH to 0.01%RH
tdry changed from .1degC to 0.01degC

Note that the increase in precision does not necessarily imply an increase in accuracy.  
Users are cautioned to continue to use their best scientific judgement when using these or 
any other data.
Measurements:sgpsondewnpnC1.b1:
  • alt
  • Dry Bulb Temperature(tdry)
  • Dewpoint Temperature(dp)
  • Humidity, relative(rh)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)

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DQRID : D090224.3
Start DateStart TimeEnd DateEnd Time
01/06/2009173001/06/20091730
Subject:
SGP/SONDE/C1 - Suspect RH values
DataStreams:sgpsondewnpnC1.b1
Description:
RH values only are suspect for the duration of this radiosonde flight, exhibiting a 
"sawtooth" pattern.
Measurements:sgpsondewnpnC1.b1:
  • Humidity, relative(rh)

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