SUMMARY:
This paper discusses the analyses of wind turbine wake structure considering varying atmospheric stability regimes using measurements from a single scanning lidar; representing an extension of the work of Aiken and Lundquist (JTECH, 2014). Frequency in wake detection, wake velocity deficits, wake width, and wake centerline results are presented. I believe the effort the authors have made through this revision iteration to elaborate on many of the experiment details and analysis methodologies has greatly improved this manuscript, and the authors effectively addressed the suggested revision edits. I accept the current version for publication, though have just a couple remaining technical revision requests.
MINOR COMMENTS/QUESTIONS:
1. P16, L5-6: The text references Figure 12-a and 12-b, but the actual Figure 12 (and its caption) on P17 do not reference a or b, rather left and right.
2. P 16, L10: The statement “…the clockwise change of wind direction with height that occurs in strongly stable conditions…” implies that such a change in wind direction always occurs in strongly stable conditions, and perhaps implies that it does not occur in unstable conditions. First, depending on the depth being considered, there is commonly wind veer through some depth of the boundary layer, stability aside. Second, the magnitude of wind veer through the relevant heights of a typical utility scale turbine rotor can vary considerably in strongly stable conditions, and isn’t necessarily always present. I would encourage the authors to reconsider the wording used here. |