DQRID : D070510.5
Start DateStart TimeEnd DateEnd Time
04/05/2007000008/19/20072135
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Subject:
TWP/SMET/C2 - Lower windspeed sensor questionable
DataStreams:twpsmet60sC2.b1
Description:
Lower wind speed sensor had degraded bearings.  This sensor was reporting as much as 0.4 
m/s lower values than the upper sensors when the winds were 2 m/s or below.  The sensor 
was replaced.
Suggestions: 
When winds are below 2 m/s, use upper wind data only.
Measurements:twpsmet60sC2.b1:
  • Lower sensor, wind speed minimum(lo_spd_min)
  • Lower sensor, wind speed arithmetic average(lo_spd_arith_avg)
  • Lower sensor, wind speed standard deviation(lo_spd_sd)
  • Lower sensor, wind speed vector average(lo_spd_vec_avg)
  • Lower sensor, wind speed maximum(lo_spd_max)
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