DQRID : D160229.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
12/13/20101800Open Ended1800Incorrect
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Subject:
TWP/DLPROF/C3 - Uncertainties under estimated
DataStreams:twpdlprofwind4newsC3.c1
Description:
Uncertainty estimates for velocity, wind speed and wind direction are not correct. The 
current method considers only the uncertainty due to the radial velocity precision and does 
not account for uncertainty due to turbulence, which is generally the dominant source of 
error. As a result, the uncertainties are significantly under estimated.
Suggestions: 
Users should not use the uncertainties provided by the current VAP (i.e. u_error, 

v_error, w_error, wind_speed_error,wind_direction_error) as a means of quality control. The 
variable called "residual" provides a much better indicator of data quality.
Measurements:twpdlprofwind4newsC3.c1:
  • w_error
  • wind_speed_error
  • v_error
  • u_error
  • wind_direction_error
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