ドップラーソーダによる自然風観測値に基づく風速プロファイルの推定に関して

概要

論文の詳細を見る
Authors' group has been conducting full-scale measurements of atmospheric boundary layer wind speeds by doppler sodars. It is expected to obtain the wind speed profile easily by doppler sodars, because the wind speeds at many altitudes can be measured simultaneously. Preceding to the observation, the quality of the data obtained in various measuring conditions was studied, and the optimum measuring condition was shown. In our study, the measurements had been selected on the basis of the wind speed at the reference altitude, and wind speed profile had been evaluated from the averaged values of them. This method was reexamined by the statistical method in this paper. It is conformed that the value of wind speed at the reference altitude is overestimated in this method and suggested that the measurements would rather be selected by the wind speed averaged at whole altitudes. However, it was pointed out that the data collectable rate at higher altitudes reduced as the wind speed became higher. This phenomenon were presumed to be caused by wind-induced noise. In this paper, the effects of wind-induced noise on the data collectable rates and the measurements were also studied. It is confirmed that the effect of wind-induced noise cannot be ignored and the errors in the measurements are significant at higher altitudes.
社団法人日本建築学会の論文
2001-12-30