Data Quality Reports for Session: 104522 User: danahe Completed: 02/27/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D041214.1NSA/METTWR/C1 - All 10m level Data Missingnsamettwr4hC1.b1
D050110.3NSA/METTWR/C1 - Instrument problem, Contamination, False signalnsamettwr4hC1.b1
D050124.2NSA/METTWR/C1 - CMH data intermittently poornsamettwr4hC1.b1
D050527.2NSA/METTWR/C1 - Incorrect Maximum for Precip Valuesnsamettwr4hC1.b1
D050727.1NSA/METTWR/C1 - CMH mirror dirtynsamettwr4hC1.b1
D050829.2NSA/METTWR/C1 - Tower Maintenancensamettwr4hC1.b1
D050906.1NSA/METTWR/C1 - CMH and PWS data missingnsamettwr4hC1.b1
D050920.5NSA/METTWR/C1 - CMH Data Missingnsamettwr4hC1.b1
D051011.1NSA/METTWR/C1 - 2m wind Direction Sensor Failednsamettwr4hC1.b1
D051025.2NSA/METTWR/C1 - Data 1-minute behindnsamettwr4hC1.b1
D051101.4NSA/METTWR/C1 - Reprocess: Wind direction data incorrectnsamettwr4hC1.b1
D060817.4NSA/METTWR/C1 - Reprocess: Barometric Data Changed from hPa to kPansamettwr4hC1.b1


DQRID : D041214.1
Start DateStart TimeEnd DateEnd Time
12/13/2004200204/26/20051902
Subject:
NSA/METTWR/C1 - All 10m level Data Missing
DataStreams:nsamettwr4hC1.b1
Description:
After prolonged power outage and many power spikes during the outage all data from the 10m 
level are missing.  Blown fuse on the power supply was replaced once the temperatures 
warmed enough to allow the lowering of the tower carriages.
Measurements:nsamettwr4hC1.b1:
  • 10m Average Calculated Dew Point(DP10M_AVG)
  • 10m Average QLI Reference Temperature(RefT10m_AVG)
  • Standard Deviation of 10m Calculated Vapor Pressure(VP10M_STD)
  • 10m Average Relative Humidity(RH10M_AVG)
  • 10m Vector Averaged Wind Speed(WS10M_U_WVT)
  • 10m Average Calculated Vapor Pressure(VP10M_AVG)
  • 10m Average QLI Input Voltage(Volt10M_AVG)
  • Standard Deviation of 10m Vector Averaged Wind Direction(WD10M_SDU_WVT)
  • 10m Average Temperature(T10M_AVG)
  • Standard Deviation of 10m Relative Humidity(RH10M_STD)
  • 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
  • 10m Vector Averaged Wind Direction(WD10M_DU_WVT)
  • Standard Deviation of 10m Calculated Dew Point(DP10M_STD)
  • Standard Deviation of 10m Temperature(T10M_STD)


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DQRID : D050110.3
Start DateStart TimeEnd DateEnd Time
01/08/2005154501/10/20051110
Subject:
NSA/METTWR/C1 - Instrument problem, Contamination, False signal
DataStreams:nsamettwr4hC1.b1
Description:
Data in error due to heavy snow during blizzard conditions.
Measurements:nsamettwr4hC1.b1:
  • Sonic Arithmetic Mean Wind Speed(SonicWS_S_WVT)
  • Sonic Vector Averaged Wind Direction(SonicWD_DU_WVT)
  • Average Y Component of Sonic Wind Speed(SonicY_AVG)
  • Standard Deviation of Sonic Vector Averaged Wind Direction(SonicWD_SDU_WVT)
  • Average Sonic Static Speed of Sound(SonicS_AVG)
  • Sonic Vector Averaged Wind Speed(SonicWS_U_WVT)
  • Average X Component of Sonic Wind Speed(SonicX_AVG)


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DQRID : D050124.2
Start DateStart TimeEnd DateEnd Time
01/10/2005221301/20/20052100
Subject:
NSA/METTWR/C1 - CMH data intermittently poor
DataStreams:nsamettwr4hC1.b1
Description:
CMH aspirator fan intermittently failed causing higher than actual 
             temperature and dew point readings.
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 : D050527.2
Start DateStart TimeEnd DateEnd Time
10/31/2003000005/26/20051014
Subject:
NSA/METTWR/C1 - Incorrect Maximum for Precip Values
DataStreams:nsamettwr4hC1.b1
Description:
The max values for cumulative rain sum of 99 mm and the rain rate of 999 mm/hr are 
incorrect.  In communication with the manufacturer it has been found that the manual was in 
error.  The actual max values of the cumulative rain sum is 99.99 mm and the rain rate is 
999.99 mm/hr.
Measurements:nsamettwr4hC1.b1:
  • Precipitation Rate(PcpRate)
  • Cumulative Water Sum(CumH2O)


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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 : D050906.1
Start DateStart TimeEnd DateEnd Time
09/05/2005222109/06/20051918
Subject:
NSA/METTWR/C1 - CMH and PWS data missing
DataStreams:nsamettwr4hC1.b1
Description:
The CMH and PWS data are missing and unrecoverable.  A GFCI was tripped causing a loss of 
power to these sensors.   The CMH came back online at 1916 GMT and the PWS came back 
online at 1918 GMT.
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)


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DQRID : D050920.5
Start DateStart TimeEnd DateEnd Time
09/19/2005141609/21/20052203
Subject:
NSA/METTWR/C1 - CMH Data Missing
DataStreams:nsamettwr4hC1.b1
Description:
Data from CMH was missing due to a corroded RS-232 9-Pin connector.
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 : D051011.1
Start DateStart TimeEnd DateEnd Time
10/09/2005162010/11/20050012
Subject:
NSA/METTWR/C1 - 2m wind Direction Sensor Failed
DataStreams:nsamettwr4hC1.b1
Description:
The 2m cup wind direction flat lined at 236 degrees.  Sensor failed.
Measurements:nsamettwr4hC1.b1:
  • Standard Deviation of 2m Vector Averaged Wind Direction(WD2M_SDU_WVT)
  • 2m Vector Averaged Wind Speed(WS2M_U_WVT)
  • 2m Vector Averaged Wind Direction(WD2M_DU_WVT)
  • 2m Arithmetic Mean Wind Speed(WS2M_S_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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DQRID : D060817.4
Start DateStart TimeEnd DateEnd Time
10/31/2003000007/12/20061608
Subject:
NSA/METTWR/C1 - Reprocess: Barometric Data Changed from hPa to kPa
DataStreams:nsamettwr4hC1.b1
Description:
Barometric pressure data was converted from hPa to kPa in order to standardize the 
measurement units among ARM sites and to conform to accepted standard units determined by the 
scientific community.
Measurements:nsamettwr4hC1.b1:
  • Atmospheric Pressure(AtmPress)


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