Data Quality Reports for Session: 130724 User: loknath Completed: 10/06/2010

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D030517.2NSA/SONDE/C1 - Broken temperature sensornsasondewnpnC1.a1, nsasondewnpnC1.b1
D041213.5NSA/SONDE/C1 - Incorrect surface altitudensasondeC1.00, nsasondewnpnC1.b1
D060928.4NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdrynsasondewnpnC1.b1


DQRID : D030517.2
Start DateStart TimeEnd DateEnd Time
05/12/2003230005/13/20030045
Subject:
NSA/SONDE/C1 - Broken temperature sensor
DataStreams:nsasondewnpnC1.a1, nsasondewnpnC1.b1
Description:
It appears that the temperature sensor on this radiosonde broke after launch.  There is a 
sudden drop of 12 degC in 2 seconds and the remaining tdry values seem to be about 30 
degC low.
Measurements:nsasondewnpnC1.b1:
  • Dry Bulb Temperature(tdry)
  • Dewpoint Temperature(dp)
  • Humidity, relative(rh)
nsasondewnpnC1.a1:
  • Humidity, relative(rh)
  • Dry Bulb Temperature(tdry)
  • Dewpoint Temperature(dp)

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DQRID : D041213.5
Start DateStart TimeEnd DateEnd Time
04/28/2002000002/13/20042359
Subject:
NSA/SONDE/C1 - Incorrect surface altitude
DataStreams:nsasondeC1.00, nsasondewnpnC1.b1
Description:
The value of the station altitude (relative to mean sea level) is
incorrect in all NSA radiosonde files prior to 2/14/2004.  The correct
value is 8 m.  The incorrect value can be different.  Prior to 4/24/2002
(in platform nsaisssonde...) it was given as 12 m.  From 4/24/2002 to
2/13/2004 (in platform nsasondewnpn...) it is almost always given as
27 m (sometimes [rarely] 17 m).
Measurements:nsasondewnpnC1.b1:
  • alt
nsasondeC1.00:
  • Raw data stream - documentation not supported

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DQRID : D060928.4
Start DateStart TimeEnd DateEnd Time
09/29/2006050012/31/99992359
Subject:
NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry
DataStreams:nsasondewnpnC1.b1
Description:
The output precision of the following variables was increased 20060929:

   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:nsasondewnpnC1.b1:
  • alt
  • Dry Bulb Temperature(tdry)
  • Dewpoint Temperature(dp)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)
  • Humidity, relative(rh)

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