1台のドップラーレーダーによるエコー強度およびドップラー速度情報を用いた3次元風速推定手法の開発

Abstract

Authors have proposed method of estimating three dimentional wind velocity using only information on reflectivity detected conventional radar, and evaluated accuracy of estimations by the method using wind fields derived from dual Doppler observations.In this study, we evaluate accuracy of estimations more quantitatively, and investigate sensitivity of estimations to assumptions in the method.Moreover, based on results of the evaluation, the method is extended as a method which utilizes information on Doppler velocity detected by one Doppler radar.In order to evaluate accuracy of estimations by extended method, we calculate also horizontal wind field using information on Doppler velocity detected by dual Doppler radars.Using the calculated wind field, we evaluate accuracy of estimations by extended method qualitively and quantitably.In summary, the more severe the precipitation event is, the better skill the proposed methods show.