Evaluation of Wind Speed Profile From Observations by Doppler Sodars

Profiles of mean wind speeds and vertical turbulence intensities measured at seashore and two inland sites using Doppler sodars

“…Since the measurement accuracy was insufficient when the data collectable rate was less than 30%, it was decided to adopt only data that showed a data collectable rate of more than 30% at all altitudes (Tamura et al, 1999). Some problems related to wind observation and estimation of wind speed profile by Doppler sodar were also discussed in Powell et al (1999) and Suda et al (2001). This paper focuses on an additional matter related to data processing.…”

“…Because the altitude resolution degenerates as the pulse length increases, the measurements obtained by these two pulses are probed over a space with a different altitude range. A method for correcting for the difference between measured values at an altitude of 100 m derived from the decay of sound power with propagated distance has been presented in Suda et al (2001) and Tamura et al (1998). The corrected values are plotted in Fig.…”