Data Quality Reports for Session: 100468 User: triffid Completed: 07/13/2006

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050727.1NSA/METTWR/C1 - CMH mirror dirtynsamettwr4hC1.b1
D050829.2NSA/METTWR/C1 - Tower Maintenancensamettwr4hC1.b1
D051025.2NSA/METTWR/C1 - Data 1-minute behindnsamettwr4hC1.b1
D051101.4NSA/METTWR/C1 - Reprocess: Wind direction data incorrectnsamettwr4hC1.b1


DQRID : D050727.1
Start DateStart TimeEnd DateEnd Time
05/28/2005063007/19/20051934
Subject:
NSA/METTWR/C1 - CMH mirror dirty
DataStreams:nsamettwr4hC1.b1
Description:
The CMH mirror was in need of cleaning.  The data is suspect from 05/28/05 through 
07/04/05 as intermittently poor readings occurred.  After 07/04/05 the data was incorrect as the 
mirror was excessively dirty.
Measurements:nsamettwr4hC1.b1:
  • Chilled Mirror Calculated Vapor Pressure(VPCMH)
  • Chilled Mirror Calculated Relative Humidity(CMHRH)
  • Chilled Mirror Dew Point(CMHDP)
  • Chilled Mirror Temperature(CMHTemp)
  • Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)

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DQRID : D050829.2
Start DateStart TimeEnd DateEnd Time
08/22/2005180008/27/20050148
Subject:
NSA/METTWR/C1 - Tower Maintenance
DataStreams:nsamettwr4hC1.b1
Description:
The booms of the tower were lowered for sensor replacement, calibration, and tower 
maintenance.  During the maintenance and sensor replacement data are frequently missing.  Where 
data are available, they are not or may not be representative because the booms were at 
the base of the tower during the time period listed.

The chilled mirror measurements were not affected by the maintenance.
Measurements:nsamettwr4hC1.b1:
  • Standard Deviation of 40m Temperature(T40M_STD)
  • 15 minute Present Weather Code(PwCod15mi)
  • 20m Average Temperature(T20M_AVG)
  • Sonic Arithmetic Mean Wind Speed(SonicWS_S_WVT)
  • 40m Vector Averaged Wind Direction(WD40M_DU_WVT)
  • 20m Average Relative Humidity(RH20M_AVG)
  • Sonic Vector Averaged Wind Direction(SonicWD_DU_WVT)
  • 2m Average Temperature(T2M_AVG)
  • Standard Deviation of 20m Temperature(T20M_STD)
  • 2m Average Calculated Dew Point(DP2M_AVG)
  • 10m Average Calculated Vapor Pressure(VP10M_AVG)
  • 20m Average Calculated Vapor Pressure(VP20M_AVG)
  • Average Sonic Static Speed of Sound(SonicS_AVG)
  • Cumulative Water Sum(CumH2O)
  • 40m Average QLI Reference Temperature(RefT40M_AVG)
  • Standard Deviation of 20m Calculated Dew Point(DP20M_STD)
  • Standard Deviation of 40m Calculated Vapor Pressure(VP40M_STD)
  • 1 minute Average Visibility(AvgVis1mi)
  • 2m Average Calculated Vapor Pressure(VP2M_AVG)
  • Standard Deviation of 2m Calculated Dew Point(DP2M_STD)
  • 10m Average QLI Reference Temperature(RefT10m_AVG)
  • 2m Average Relative Humidity(RH2M_AVG)
  • 2m Vector Averaged Wind Speed(WS2M_U_WVT)
  • 10m Average Relative Humidity(RH10M_AVG)
  • Standard Deviation of Sonic Vector Averaged Wind Direction(SonicWD_SDU_WVT)
  • Standard Deviation of 2m Calculated Vapor Pressure(VP2M_STD)
  • Standard Deviation of 2m Temperature(T2M_STD)
  • Standard Deviation of 40m Calculated Dew Point(DP40M_STD)
  • Standard Deviation of 20m Calculated Vapor Pressure(VP20M_STD)
  • 10m Average Temperature(T10M_AVG)
  • 1 hour Present Weather Code(PwCod1hr)
  • 2m Arithmetic Mean Wind Speed(WS2M_S_WVT)
  • 20m Vector Averaged Wind Direction(WD20M_DU_WVT)
  • Cumulative Snow Sum(CumSnow)
  • 40m Average Relative Humidity(RH40M_AVG)
  • Average Y Component of Sonic Wind Speed(SonicY_AVG)
  • 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
  • Standard Deviation of 40m Relative Humidity(RH40M_STD)
  • Standard Deviation of 10m Calculated Dew Point(DP10M_STD)
  • Present Weather Sensor Alarm(PWSAlarm)
  • 20m Average QLI Input Voltage(Volt20M_AVG)
  • Standard Deviation of 2m Vector Averaged Wind Direction(WD2M_SDU_WVT)
  • 40m Average QLI Reference Voltage(Volt40M_AVG)
  • Instant Present Weather Code(InstPwCod)
  • Standard Deviation of 20m Relative Humidity(RH20M_STD)
  • Standard Deviation of 2m Relative Humidity(RH2M_STD)
  • 2m Average QLI Input Voltage(Volt2M_AVG)
  • 20m Average Calculated Dew Point(DP20M_AVG)
  • 40m Arithmetic Mean Wind Speed(WS40M_S_WVT)
  • 10m Vector Averaged Wind Speed(WS10M_U_WVT)
  • 40m Average Temperature(T40M_AVG)
  • Standard Deviation of 10m Vector Averaged Wind Direction(WD10M_SDU_WVT)
  • Standard Deviation of 10m Relative Humidity(RH10M_STD)
  • 40m Vector Averaged Wind Speed(WS40M_U_WVT)
  • Precipitation Rate(PcpRate)
  • Standard Deviation of 10m Temperature(T10M_STD)
  • Average X Component of Sonic Wind Speed(SonicX_AVG)
  • 10m Average Calculated Dew Point(DP10M_AVG)
  • Standard Deviation of 10m Calculated Vapor Pressure(VP10M_STD)
  • Standard Deviation of 40m Vector Averaged Wind Direction(WD40M_SDU_WVT)
  • 2m Average QLI Reference Temperature(RefT2M_AVG)
  • 20m Average QLI Reference Temperature(RefT20M_AVG)
  • 10m Average QLI Input Voltage(Volt10M_AVG)
  • 20m Vector Averaged Wind Speed(WS20M_U_WVT)
  • 20m Arithmetic Mean Wind Speed(WS20M_S_WVT)
  • 2m Vector Averaged Wind Direction(WD2M_DU_WVT)
  • Standard Deviation of 20m Vector Averaged Wind Direction(WD20M_SDU_WVT)
  • 10 minute Average Visibility(AvgVis10m)
  • 40m Average Calculated Dew Point(DP40M_AVG)
  • 40m Average Calculated Vapor Pressure(VP40M_AVG)
  • Sonic Vector Averaged Wind Speed(SonicWS_U_WVT)
  • 10m Vector Averaged Wind Direction(WD10M_DU_WVT)

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DQRID : D051025.2
Start DateStart TimeEnd DateEnd Time
10/31/2003000009/14/20051420
Subject:
NSA/METTWR/C1 - Data 1-minute behind
DataStreams:nsamettwr4hC1.b1
Description:
Data from the Barometer, Chilled Mirror Hygrometer and the Present Weather Sensor were 
one-minute behind due to timing problems collecting data from the Serial Data Multiplexer 
that handled these sensors.
Measurements:nsamettwr4hC1.b1:
  • 15 minute Present Weather Code(PwCod15mi)
  • 1 minute Average Visibility(AvgVis1mi)
  • Chilled Mirror Dew Point(CMHDP)
  • Instant Present Weather Code(InstPwCod)
  • Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
  • Chilled Mirror Calculated Relative Humidity(CMHRH)
  • Chilled Mirror Calculated Vapor Pressure(VPCMH)
  • 1 hour Present Weather Code(PwCod1hr)
  • Cumulative Snow Sum(CumSnow)
  • 10 minute Average Visibility(AvgVis10m)
  • Chilled Mirror Temperature(CMHTemp)
  • Precipitation Rate(PcpRate)
  • Cumulative Water Sum(CumH2O)
  • Present Weather Sensor Alarm(PWSAlarm)
  • Atmospheric Pressure(AtmPress)

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DQRID : D051101.4
Start DateStart TimeEnd DateEnd Time
10/31/2003000010/20/20051900
Subject:
NSA/METTWR/C1 - Reprocess: Wind direction data incorrect
DataStreams:nsamettwr4hC1.b1
Description:
Wind direction data is off by 30 degrees for all wind sensors.  The 40-m tower was 
misaligned to true north.
Measurements:nsamettwr4hC1.b1:
  • 40m Vector Averaged Wind Direction(WD40M_DU_WVT)
  • 2m Vector Averaged Wind Direction(WD2M_DU_WVT)
  • 20m Vector Averaged Wind Direction(WD20M_DU_WVT)
  • Sonic Vector Averaged Wind Direction(SonicWD_DU_WVT)
  • 10m Vector Averaged Wind Direction(WD10M_DU_WVT)

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