Data Quality Reports for Session: 111241 User: gaustad Completed: 03/23/2008


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D030114.1SGP/SONDE/C1 - Bad RH DatasgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030122.1SGP/SONDE/C1 - Broken temperature sensor SGP/CF soundingsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030206.5SGP/SONDE/C1 - Bad temperature/RHsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030330.1SGP/Sonde/C1 - Bad temperature, RHsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030409.1SGP/Sonde/C1 - Bad RH in soundingsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030411.1SGP/Sonde/C1 - Sondes launched an hour earlysgpsondewnpnC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030411.2SGP/Sonde/C1 - Incorrect surface temperature on CF soundingsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030411.3SGP/Sonde/C1 - Failed Sonde Launches due to Antenna problemssgplssondeC1.c1, sgpsondeC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030419.2SGP/SONDE/C1 - Broken Temperature SensorsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030427.1SGP/SONDE/C1 - Broken temperature sensorsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030507.3SGP/SONDE/C1 - Broken temperature sensorssgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030614.1SGP/SONDE/C1 - Broken temperature sensorsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030707.7SGP/SONDE/C1 - Incorrect surface RH value.sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030722.1SGP/SONDE/C1 - Broken temperature sensorsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D030807.1SGP/SONDE/C1 - A few bad temperature values at the beginning of the soundingsgpsondewnpnC1.a1, sgpsondewnpnC1.b1
D031112.1SGP/SONDE/C1 - Broken temperature sensorsgpsondewnpnC1.b1
D060928.3SGP/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdrysgpsondewnpnC1.b1


DQRID : D030114.1
Start DateStart TimeEnd DateEnd Time
01/11/2003053601/11/20030551
Subject:
SGP/SONDE/C1 - Bad RH Data
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
The RH values during the first 15 minutes of this sounding oscillate between reasonable 
values and near-zero values.  The oscillation is irregular and seems to be related to 
failure of the RH sensor heating process.  I have informed Vaisala of the problem and provided 
raw data files to them for analysis.
Measurements:sgpsondewnpnC1.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)


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DQRID : D030122.1
Start DateStart TimeEnd DateEnd Time
01/19/2003113401/19/20031259
Subject:
SGP/SONDE/C1 - Broken temperature sensor SGP/CF sounding
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
The radiosonde temperature sensor apparently broke during launch.  This results in bad 
temperature, dew point, and rh data.
Measurements:sgpsondewnpnC1.a1:
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)


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DQRID : D030206.5
Start DateStart TimeEnd DateEnd Time
02/02/2003173202/02/20031832
Subject:
SGP/SONDE/C1 - Bad temperature/RH
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
The temperature sensor broke shortly after launch.  All temperature and RH-related data 
are incorrect.
Measurements:sgpsondewnpnC1.a1:
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)


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DQRID : D030330.1
Start DateStart TimeEnd DateEnd Time
03/18/2003113203/18/20031322
03/20/2003113103/20/20031140
03/20/2003173103/20/20031904
Subject:
SGP/Sonde/C1 - Bad temperature, RH
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
These three soundings all show the effects of a temperature sensor broken at launch.  The 
temperature, RH, dew-point values all are incorrect.
Measurements:sgpsondewnpnC1.a1:
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)


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DQRID : D030409.1
Start DateStart TimeEnd DateEnd Time
04/06/2003114404/06/20031203
Subject:
SGP/Sonde/C1 - Bad RH in sounding
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
The RH sensor heating circuit was out of synch from about 400 sec after launch until the 
circuit was turned off whent he sounding temperature reached approximately 233 degK (-40 
degC) about 1500 sec after launch.  During this time period the reported RH oscillates 
between reasonable values and near-zero values.
Measurements:sgpsondewnpnC1.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)


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DQRID : D030411.1
Start DateStart TimeEnd DateEnd Time
04/06/2003220004/07/20030700
Subject:
SGP/Sonde/C1 - Sondes launched an hour early
DataStreams:sgpsondewnpnC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
It looks like someone forgot to set his/her clock ahead.  The sounding that should have 
been done at 23:30 UTC on 4/6 was done at 22:38 and the following sounding, which should 
have been done at 0530 on 4/7 was done at 04:31.  The subsequent soundings all are done at 
the correct times.
Measurements:sgpsondewnpnC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgpsondewnpnC1.a1:
  • Mean Wind Speed(wspd)
  • Dummy altitude for Zeb(alt)
  • V-component(v_wind)
  • base time(base_time)
  • Relative humidity inside the instrument enclosure(rh)
  • Ascent Rate(asc)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • U-component(u_wind)
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • lat(lat)
  • lon(lon)
  • Retrieved pressure profile(pres)

sgpsondewnpnC1.b1:
  • Mean Wind Speed(wspd)
  • U-component(u_wind)
  • lat(lat)
  • Ascent Rate(asc)
  • lon(lon)
  • Time offset of tweaks from base_time(time_offset)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • base time(base_time)
  • Relative humidity inside the instrument enclosure(rh)
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • Dry bulb temperature(tdry)


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DQRID : D030411.2
Start DateStart TimeEnd DateEnd Time
04/06/2003223804/06/20032238
Subject:
SGP/Sonde/C1 - Incorrect surface temperature on CF sounding
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
It appears that the operator entered an incorrect value for surface temperature.  Rather 
than 43.2 degC in the file, the value is most likely 19. degC (thwaps reading 19.4, first 
sonde reading aloft 18.6).
Measurements:sgpsondewnpnC1.a1:
  • Dry bulb temperature(tdry)

sgpsondewnpnC1.b1:
  • Dry bulb temperature(tdry)


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DQRID : D030411.3
Start DateStart TimeEnd DateEnd Time
04/01/2003173004/01/20031930
04/02/2003053004/02/20030730
04/02/2003113004/02/20031330
Subject:
SGP/Sonde/C1 - Failed Sonde Launches due to Antenna problems
DataStreams:sgplssondeC1.c1, sgpsondeC1.00, sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
These sonde launches where unsuccessful due to problems
with the antenna configuration resulting in signal loss
before the launch.
Measurements:sgpsondewnpnC1.a1:
  • Mean Wind Speed(wspd)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • base time(base_time)
  • Relative humidity inside the instrument enclosure(rh)
  • Ascent Rate(asc)
  • U-component(u_wind)
  • Wind Status(wstat)
  • Wind Direction(deg)
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Time offset of tweaks from base_time(time_offset)
  • lat(lat)
  • lon(lon)
  • Retrieved pressure profile(pres)

sgpsondewnpnC1.b1:
  • U-component(u_wind)
  • Mean Wind Speed(wspd)
  • lat(lat)
  • Ascent Rate(asc)
  • lon(lon)
  • Time offset of tweaks from base_time(time_offset)
  • V-component(v_wind)
  • Dummy altitude for Zeb(alt)
  • Surface dew point temperature(dp)
  • base time(base_time)
  • Relative humidity inside the instrument enclosure(rh)
  • Retrieved pressure profile(pres)
  • Wind Direction(deg)
  • Wind Status(wstat)
  • Dry bulb temperature(tdry)

sgpsondeC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

sgplssondeC1.c1:
  • lon(lon)
  • Dummy altitude for Zeb(alt)
  • base time(base_time)
  • Retrieved pressure profile(pres)
  • Relative humidity inside the instrument enclosure(rh)
  • Dry bulb temperature(tdry)
  • lat(lat)
  • Time offset of tweaks from base_time(time_offset)


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DQRID : D030419.2
Start DateStart TimeEnd DateEnd Time
04/15/2003233204/16/20030124
Subject:
SGP/SONDE/C1 - Broken Temperature Sensor
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
The temperature sensor broke shortly after launch as a result all variables that are 
affected by temperature are incorrect.
Measurements:sgpsondewnpnC1.a1:
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)


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DQRID : D030427.1
Start DateStart TimeEnd DateEnd Time
04/18/2003113004/18/20031310
Subject:
SGP/SONDE/C1 - Broken temperature sensor
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
The temperature sensor on this radiosonde broke after launch.  All temperature-related 
variables (dp, tdry, rh) are incorrect.
Measurements:sgpsondewnpnC1.a1:
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)


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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.a1:
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)


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DQRID : D030614.1
Start DateStart TimeEnd DateEnd Time
06/09/2003173006/09/20031737
Subject:
SGP/SONDE/C1 - Broken temperature sensor
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
The temperature sensor broke at launch on this sounding.  All of the temperature-related 
data (tdry, rh, dp) are incorrect.
Measurements:sgpsondewnpnC1.a1:
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)


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DQRID : D030707.7
Start DateStart TimeEnd DateEnd Time
06/22/2003233106/22/20032331
Subject:
SGP/SONDE/C1 - Incorrect surface RH value.
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
The surface RH value, reported as 0%RH should be 52%.  This resulted from a typographical 
error by the operator when entering the surface data.
Measurements:sgpsondewnpnC1.a1:
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity inside the instrument enclosure(rh)


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DQRID : D030722.1
Start DateStart TimeEnd DateEnd Time
07/19/2003173007/19/20031930
Subject:
SGP/SONDE/C1 - Broken temperature sensor
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
The temperature sensor broke at launch on this sounding.  All of the temperature-related 
data (tdry, rh, dp) are incorrect.
Measurements:sgpsondewnpnC1.a1:
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)


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DQRID : D030807.1
Start DateStart TimeEnd DateEnd Time
08/02/2003172508/02/20031726
Subject:
SGP/SONDE/C1 - A few bad temperature values at the beginning of the sounding
DataStreams:sgpsondewnpnC1.a1, sgpsondewnpnC1.b1
Description:
I've never seen this before.  The temperature reported by the radiosonde dropped over 30 
degC just after launch (usually a symptom of a broken temperature sensor), but then 
recovered after 14 seconds of bad readings.  The temperatures from 2 seconds through 14 seconds 
after launch are incorrect, the remainder of the sounding looks fine.  I have sent the 
data files to Vaisala for their consideration.
Measurements:sgpsondewnpnC1.a1:
  • Dry bulb temperature(tdry)
  • Surface dew point temperature(dp)

sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)


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DQRID : D031112.1
Start DateStart TimeEnd DateEnd Time
11/01/2003113311/01/20031315
Subject:
SGP/SONDE/C1 - Broken temperature sensor
DataStreams:sgpsondewnpnC1.b1
Description:
The temperature sensor broke at launch on this sounding.  All of the temperature-related 
data (tdry, rh, dp) are incorrect.
Measurements:sgpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)


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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:
  • Surface dew point temperature(dp)
  • Dry bulb temperature(tdry)
  • Relative humidity inside the instrument enclosure(rh)
  • Retrieved pressure profile(pres)
  • Dummy altitude for Zeb(alt)


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