Data Quality Reports for Session: 137308 User: czhang Completed: 09/08/2011

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D070313.3TWP/SONDE/C1 - Surface RH value incorrecttwpsondewnpnC1.b1
D090629.3TWP/SONDE/C1 - Wind data missingtwpsondewnpnC1.b1


DQRID : D070313.3
Start DateStart TimeEnd DateEnd Time
03/08/2007000003/08/20070001
Subject:
TWP/SONDE/C1 - Surface RH value incorrect
DataStreams:twpsondewnpnC1.b1
Description:
The surface RH value of 77% when the value should have been in the low 60's.  It appears 
the observers did not allow the sonde to equilibrate to ambient conditions before 
collecting the surface data.  This error also caused the dew point to be incorrect.
Measurements:twpsondewnpnC1.b1:
  • Humidity, relative(rh)
  • Dewpoint Temperature(dp)

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DQRID : D090629.3
Start DateStart TimeEnd DateEnd Time
06/21/2009110006/24/20091100
Subject:
TWP/SONDE/C1 - Wind data missing
DataStreams:twpsondewnpnC1.b1
Description:
A GPS problem associated with Vaisala BBSS ground station software issues caused the 
ground stations to enter into an error state when using GPS wind finding. In some instances, 
the flight was aborted due to the error state and not data was collected.  A workaround 
was developed to allow sondes to be launched without collecting wind data.
Measurements:twpsondewnpnC1.b1:
  • Northward Wind Component(v_wind)
  • Eastward Wind Component(u_wind)
  • wstat
  • Mean Wind Speed(wspd)

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