Data Quality Reports for Session: 114704 User: wlj Completed: 10/08/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D080225.1TWP/SMET/C3 - Upper Wind Sensor Data Questionabletwpsmet60sC3.b1
D080611.2TWP/SMET/C3 - Lower Wind Direction Intermittently Wrongtwpsmet60sC3.b1
D080617.1TWP/SMET/C2 - ORG rainfall measurements too largetwpsmet60sC2.b1
D080707.2TWP/SMET/C1 - ORG Precip Data Incorrecttwpsmet60sC1.b1
D080715.1TWP/SMET/C3 - Upper wind speed data incorrecttwpsmet60sC3.b1


DQRID : D080225.1
Start DateStart TimeEnd DateEnd Time
01/05/2008000002/27/20080315
Subject:
TWP/SMET/C3 - Upper Wind Sensor Data Questionable
DataStreams:twpsmet60sC3.b1
Description:
The wind_up vs. wind_low wind directions diverged, with the differences between the two 
eventually reached 45 degrees. The Upper sensor was found to be mis-aligned and loose.
Measurements:twpsmet60sC3.b1:
  • Upper sensor, wind speed maximum(up_spd_max)
  • Upper sensor, wind speed arithmetic average(up_spd_arith_avg)
  • Upper sensor, wind speed minimum(up_spd_min)
  • Upper sensor, wind speed vector average(up_spd_vec_avg)
  • Upper sensor, wind speed standard deviation(up_spd_sd)

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DQRID : D080611.2
Start DateStart TimeEnd DateEnd Time
05/27/2008194506/24/20080113
Subject:
TWP/SMET/C3 - Lower Wind Direction Intermittently Wrong
DataStreams:twpsmet60sC3.b1
Description:
The lower wind sensor cabling had a problem causing an intermittent connection for the 
wind direction data.
Measurements:twpsmet60sC3.b1:
  • Lower sensor, wind direction vector average(lo_dir_vec_avg)
  • Lower sensor, wind direction standard deviation(lo_dir_sd)

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DQRID : D080617.1
Start DateStart TimeEnd DateEnd Time
05/08/2008000008/07/20082300
Subject:
TWP/SMET/C2 - ORG rainfall measurements too large
DataStreams:twpsmet60sC2.b1
Description:
The ORG was collecting large amounts of rainfall compared to the co-located tipping bucket 
raingauge.  The cable was chewed by mice causing the wires to make contact 
intermittently mimicking rainfall.
Measurements:twpsmet60sC2.b1:
  • Precipitation maximum(precip_max)
  • Precipitation mean(precip_mean)
  • precipitation minimum(precip_min)
  • Precipitation standard deviation(precip_sd)

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DQRID : D080707.2
Start DateStart TimeEnd DateEnd Time
02/07/2008130002/09/20080600
Subject:
TWP/SMET/C1 - ORG Precip Data Incorrect
DataStreams:twpsmet60sC1.b1
Description:
Moisture intrusion into the sensor body allowed condensation on the lens of the ORG.  
Continual and long-term precipitation was reported during this time.
Measurements:twpsmet60sC1.b1:
  • Precipitation mean(precip_mean)
  • Precipitation maximum(precip_max)
  • Precipitation standard deviation(precip_sd)
  • precipitation minimum(precip_min)

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DQRID : D080715.1
Start DateStart TimeEnd DateEnd Time
07/08/2008204507/17/20080144
Subject:
TWP/SMET/C3 - Upper wind speed data incorrect
DataStreams:twpsmet60sC3.b1
Description:
Beginning on 07/08, the upper wind sensor started reporting significantly lower wind 
speeds than the lower wind sensor.  The cable connections weather proofing failed allowing 
corrosion to occur and increasing he resistance of the cables.  This in turn lowered the 
wind speeds artificially.
Measurements:twpsmet60sC3.b1:
  • Upper sensor, wind speed maximum(up_spd_max)
  • Upper sensor, wind speed arithmetic average(up_spd_arith_avg)
  • Upper sensor, wind speed minimum(up_spd_min)
  • Upper sensor, wind speed vector average(up_spd_vec_avg)
  • Upper sensor, wind speed standard deviation(up_spd_sd)

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