一种普适性的加权热带气旋风场重构方法  

A universal method of weighted tropical cyclone wind field reconstruction

作　　者：周水华[1,2] 洪晓 江丽芳 梁昌霞[1,2] ZHOU Shuihua;Hong Xiao;JIANG Lifang;LIANG Changxia(South China Sea Marine Forecast Center of State Oceanic Administration,Guangzhou 510310,China;Key Laboratory of Marine Environment Survey Technology and Application,Ministry of Natural Resources,Guangzhou 510310,China)

机构地区：[1]国家海洋局南海预报中心,广东广州510310 [2]自然资源部海洋环境探测技术与应用重点实验室,广东广州510310

出　　处：《海洋通报》2021年第1期19-26,共8页Marine Science Bulletin

基　　金：国家重点研发计划项目(2017YFC1404700)。

摘　　要：台风浪模拟是海洋和海岸工程中开展重现期波浪推算的关键环节。本文在系统分析历史热带气旋近中心最大风速、大风风圈以及CCMP风场特征的基础上,提出了一种热带气旋影响范围计算方案,改进了加权热带气旋风场重构方法。以该方法重构的热带气旋风场为驱动,采用WAVEWATCHⅢ模型模拟了南海28次台风浪过程,并用南海北部88个站次的风、浪观测资料对重构后的风场及模拟浪高进行检验。检验结果显示:风速(台风浪高)的重构值(模拟值)与观测值吻合良好,改进后的加权热带气旋风场重构方法有较强的普适性。The tropical cyclone-induced wave simulation is the key of wave return period computation for ocean and coastal engineering.Based on analyzing the radius of max wind and radius of 30 kts and 50 kts winds of tropical cyclones,the characteristics of the CCMP wind field,an improved tropical cyclone wind field reconstruction method is proposed.The reconstructed wind and WAVEWATCHⅢModel are used to simulate wave field in the South China Sea.Compared to the observation of 88 buoy stations over 28 tropical cyclones,it is found that the tropical cyclone wind velocity and wave heights of simulation are in good agreement with observations.The method proposed in this paper can be used to reconstruct the wind induced by most tropical cyclones.

关 键 词：CCMP背景风场 杰氏风场模型 热带气旋 风场重构 影响范围 WAVEWATCHⅢ波浪模型 

分 类 号：P731.3[天文地球—海洋科学] P447