一个东海嵌套网格台风暴潮数值预报模式的研制与应用  

Implementation and application of a nested numerical typhoon storm surge forecast model in the East China Sea

作　　者：于福江[1] 张占海[1] 

机构地区：[1]国家海洋环境预报中心,北京100081

出　　处：《海洋学报》2002年第4期23-33,共11页

基　　金：国家"十五"科技攻关资助项目 (2 0 0 1BA6 0 3B - 0 2 );国家"86 3"海洋高科技基金资助项目 (86 3- 818- 0 1-0 4 )

摘　　要：建立了一个覆盖东海的两重嵌套网格高分辨率台风暴潮数值预报模式 .粗、细网格模式分辨率分别为 6′和 2′ .两套网格的嵌套采用单向松弛套网格技术 ,即在细网格的内边界附近建立了一个“过渡区” ,对预报的物理量进行松弛 ,使粗、细网格模式变量逐步过渡 ,避免了边界附近寄生波的产生 ,从而增加了模式的稳定性 .利用该模式 ,对显著影响东中国海地区的 6次风暴潮过程进行了后报和预报试验 .与观测资料比较 。A nested numerical storm surge forecast model for the East China Sea is developed. A one way relaxing nest method is used to exchange the information between coarse grid and fine grid. In the inner boundary of the fine grid model a transition area is set up to relax the forecast variables. This ensures that the forecast variables of the coarse model may transit to those of fine grid gradually, which enhances the model stability. By using this model, a number of hindcasts and forecast are performed for six severe storm surges caused by tropical cyclones in the East China Sea. The results show good agreement with the observations.

关 键 词：嵌套网格 风暴潮 数值预报 台风 单向松弛套网格技术 稳定性 

分 类 号：P731.34[天文地球—海洋科学]