“凤凰”台风期间海面风、浪的高频地波雷达OSMAR071遥感

Ocean surface wind and wave monitoring at Typhoon Fung-Wong by HFSWR OSMAR071

介绍了OSMAR071高频地波雷达系统"凤凰"台风期间海面风、浪遥测结果。文中给出高频地波雷达OS-MAR071风、浪反演算法:利用SBM模型结合多波束采样法反演风向;利用改进的Barrick模型进行有效波高的反演;利用SMB关系式进行风速反演。将雷达定点观测结果与浮标数据进行对比,表现出很好的一致性,其中有效波高相关系数为0.72,均方根误差为0.48m,风向相关系数为0.97,均方根误差为27.7°,风速的相关系数为0.6,均方根误差为3.5m/s。文中还对影响探测精度的因素进行了分析。

This paper provides wind and wave observation results detected by high frequency surface wave radar OSMAR071 during Typhoon Fung-Wong.Methods for extracting ocean surface parameters from HFSWR sea echo are introduced.The Stewart Barnum and Maresca SBM method combined with multi-beam sampling method is used to invert wind direction.A modified Barrick’s model is proposed to obtain significant wave height and the SMB formulation is used to extract wind speed information.Compared with buoy data of wind and wave,radar inversion results show good agreement with in-situ observations.The root-mean-square error RMSE of significant wave height,wind speed and wind direction between radar-derived and those from the buoy are 0.48 m,3.5 m/s,27.7°,and the coefficients of determination（R2） are 0.72,0.60 and 0.97,respectively.Factors affecting detecting accuracy are also discussed in this paper.