近岸台风浪的嵌套数值模式  

A NESTED NUMERICAL MODEL FOR TYPHOON WAVES OVER THE COASTAL WATER

作　　者：程展[1] 戴明瑞[1] 杨春成[1] 

机构地区：[1]国家海洋环境预报中心

出　　处：《海洋预报》1994年第4期6-12,共7页Marine Forecasts

基　　金：国家自然科学基金

摘　　要：本文将混合数值海浪模式与第三代海浪模式结合起来研究近岸台风浪。在西北太平洋及中国海域采用混合数值海浪模式预报海浪，而在近岸台风区域采用包括海底绕射项的ＷＡＭ模式，该小区域的浪边界条件由大区域上得到的计算结果提供。我们建立的数值近岸台风浪预报系统。既利用了混合海浪模式节省计算机时的优点，又用细网格的ＷＡＭ模式抓住了近岸海底地形对海浪的作用．该模式的后报结果表明，模式计算的近岸台风浪与台站的实测资料符合较好，为我们进行近岸台风浪的准确数值预报提供了有力的手段。A hybrid wave numerical model and the WAM model are jointly usedto predict typhoon waves on the coastal sea of Zhujiang Delta. In the areaof North-West Pacific Ocean arid China Sea, the wave prediction is implemented by the hybrid wave numerical model with 1° × 1°grids, while in thearea of the coastal sea, by the WAM model with 0.25 °×0.25°'grids.In the latter refractions of waves caused by the topography of sea bottomare included. Boundary conditions on the open boundaries of the small areaare provided by the numerical results obtained in the large area.The predition system is both for saving CPU time and capturing the effects of thetopography of sea bottom on waves.Hindcasting results of the system fortyphoon waves agree well with the data from the observation stations.

关 键 词：近岸 数值模式 台风 海浪 

分 类 号：P444[天文地球—大气科学及气象学] P731.22