【摘要】 首先介绍了由非线性偏微分方程组描述的CE(the U.S.Army Corps of Engineers)风场模型,然后给出了基于有限差分的风场求解方法,利用2008年登陆广东的台风黑格比的卫星观测台风关键参数模拟得到了后报风场,并与若干个近地观测站点的10min平均风速和风向数据进行了对比,结果吻合良好,说明CE台风风场适用于中国华南沿海地区,可用于该地区基于MonteCarlo的台风危险性分析。更多还原

【Abstract】 The CE (the U.S. Army Corps of Engineers) wind-field model described by a group of non-linear partial differential equations is introduced, and the finite difference solution method for the wind field model is presented. Based on CE wind-field model and the satellite observation datum of key typhoon parameters, the hindcast wind field of typhoon Hagupit, which hit Guangdong in 2008, is simulated. The comparison of the 10-minute averaged wind speeds and directions between the numerical results and the filed measurements demonstrates reasonable agreements, indicating that the CE typhoon wind-field model is applicable for simulating the typhoon in the South China coastal region and for the Monte Carlo based typhoon wind hazard analysis in such region.更多还原