Data Quality Reports for Session: 118778 User: jprell Completed: 04/08/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D060119.1NSA/METTWR/C1 - CMH Data Not Representativensamettwr4hC1.b1
D060215.4NSA/METTWR/C1 - CMH Data missingnsamettwr4hC1.b1
D060220.1NSA/METTWR/C1 - Ultrasonic Wind Sensor Values Incorrectnsamettwr4hC1.b1
D060220.2NSA/METTWR/C1 - PWS data missing due to blizzardnsamettwr4hC1.b1
D060224.1NSA/METTWR/C1 - 2m Wind Speed Artificially Lownsamettwr4hC1.b1
D060303.2NSA/METTWR/C1 - CMH temp inaccuratensamettwr4hC1.b1
D060323.1NSA/METTWR/C1 - 10m Wind Speed Lownsamettwr4hC1.b1
D060323.2NSA/METTWR/C1 - 10m Wind Speed Intermittently Lownsamettwr4hC1.b1
D060323.3NSA/METTWR/C1 - 40m Wind Speeds Intermittently Lownsamettwr4hC1.b1
D060323.4NSA/METTWR/C1 - 20m Wind Speeds Intermittently Lownsamettwr4hC1.b1
D060817.4NSA/METTWR/C1 - Reprocess: Barometric Data Changed from hPa to kPansamettwr4hC1.b1


DQRID : D060119.1
Start DateStart TimeEnd DateEnd Time
01/09/2006012001/09/20062330
Subject:
NSA/METTWR/C1 - CMH Data Not Representative
DataStreams:nsamettwr4hC1.b1
Description:
The intake of the CMH was blocked with hoar frost.  The temperatures measured by the 
chilled mirror and the temperature probe were not representative of the ambient conditions as 
a result.  The RH data calculated from these values is incorrect also.
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 : D060215.4
Start DateStart TimeEnd DateEnd Time
02/15/2006120402/15/20062222
Subject:
NSA/METTWR/C1 - CMH Data missing
DataStreams:nsamettwr4hC1.b1
Description:
CMH dew point and temp data was missing. Since Dew Point and Temp data missing RH% value = 
100% during outage.  Corrosion on power plug was athe problem.
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 : D060220.1
Start DateStart TimeEnd DateEnd Time
02/19/2006182902/20/20060400
Subject:
NSA/METTWR/C1 - Ultrasonic Wind Sensor Values Incorrect
DataStreams:nsamettwr4hC1.b1
Description:
The values collected from the ultrasonic wind sensor were intermittently incorrect.  Heavy 
wet snow during blizzard condition was interfering with the ultrasonic readings.
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 : D060220.2
Start DateStart TimeEnd DateEnd Time
02/19/2006163202/20/20062137
Subject:
NSA/METTWR/C1 - PWS data missing due to blizzard
DataStreams:nsamettwr4hC1.b1
Description:
PWS was offline and data was missing.  A blizzard consisting of heavy wet snow and strong 
winds caused snow impaction in the optics.  The PWS reported missing data as it was 
unable to measure anything meaningful.
Measurements:nsamettwr4hC1.b1:
  • 15 minute Present Weather Code(PwCod15mi)
  • 1 minute Average Visibility(AvgVis1mi)
  • Instant Present Weather Code(InstPwCod)
  • 1 hour Present Weather Code(PwCod1hr)
  • Cumulative Snow Sum(CumSnow)
  • 10 minute Average Visibility(AvgVis10m)
  • Precipitation Rate(PcpRate)
  • Present Weather Sensor Alarm(PWSAlarm)

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DQRID : D060224.1
Start DateStart TimeEnd DateEnd Time
02/19/2006201002/20/20060934
Subject:
NSA/METTWR/C1 - 2m Wind Speed Artificially Low
DataStreams:nsamettwr4hC1.b1
Description:
The 2m wind speed values were artificially low due to snow impaction during a heavy 
blizzard.  The cup anemometer heaters could not keep up with the rapid deposition of snow.
Measurements:nsamettwr4hC1.b1:
  • 2m Vector Averaged Wind Speed(WS2M_U_WVT)
  • 2m Arithmetic Mean Wind Speed(WS2M_S_WVT)

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DQRID : D060303.2
Start DateStart TimeEnd DateEnd Time
02/28/2006070003/06/20062100
Subject:
NSA/METTWR/C1 - CMH temp inaccurate
DataStreams:nsamettwr4hC1.b1
Description:
The CMH Temperature was consistently 4-7 degrees warmer than the 2M, 40M, 20M, and 10M 
temp. Intake fan failure; fan was replaced.
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 : D060323.1
Start DateStart TimeEnd DateEnd Time
01/02/2006050001/06/20061745
01/14/2006120201/23/20061140
Subject:
NSA/METTWR/C1 - 10m Wind Speed Low
DataStreams:nsamettwr4hC1.b1
Description:
The 10m wind speed values are too low due to ice accumulation on the cup anemometer.
Measurements:nsamettwr4hC1.b1:
  • 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
  • 10m Vector Averaged Wind Speed(WS10M_U_WVT)

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DQRID : D060323.2
Start DateStart TimeEnd DateEnd Time
01/09/2006103001/13/20060402
Subject:
NSA/METTWR/C1 - 10m Wind Speed Intermittently Low
DataStreams:nsamettwr4hC1.b1
Description:
The 10m wind speeds are intermittently too low due to ice accumulation on the cup 
anemometer.
Measurements:nsamettwr4hC1.b1:
  • 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
  • 10m Vector Averaged Wind Speed(WS10M_U_WVT)

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DQRID : D060323.3
Start DateStart TimeEnd DateEnd Time
01/10/2006060001/13/20060402
01/26/2006160201/27/20060516
02/03/2006002002/05/20060540
Subject:
NSA/METTWR/C1 - 40m Wind Speeds Intermittently Low
DataStreams:nsamettwr4hC1.b1
Description:
The 40m wind speed values were too low due to ice accumulation on the cup anemometer.
Measurements:nsamettwr4hC1.b1:
  • 40m Vector Averaged Wind Speed(WS40M_U_WVT)
  • 40m Arithmetic Mean Wind Speed(WS40M_S_WVT)

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DQRID : D060323.4
Start DateStart TimeEnd DateEnd Time
01/12/2006081201/13/20060402
02/03/2006011502/03/20061603
Subject:
NSA/METTWR/C1 - 20m Wind Speeds Intermittently Low
DataStreams:nsamettwr4hC1.b1
Description:
The 20m wind speeds were artificially low due to ice accumulation on the cup anemometer.
Measurements:nsamettwr4hC1.b1:
  • 20m Vector Averaged Wind Speed(WS20M_U_WVT)
  • 20m Arithmetic Mean Wind Speed(WS20M_S_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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