利用POM模拟海州湾温带风暴潮  

Numeric simulation of extratropical storm surge in Haizhouwan Bay by POM

作　　者：郭衍游[1] 刘吉堂[2] 

机构地区：[1]淮海工学院测绘工程学院海洋技术系,江苏连云港222005 [2]国家海洋局连云港海洋环境监测站,江苏连云港222042

出　　处：《海洋学研究》2010年第4期83-88,共6页Journal of Marine Sciences

基　　金：连云港市科技计划资助项目(SH0718)

摘　　要：利用POM模式模拟了2007年0303号温带风暴潮在海州湾的增减水过程,以期为风暴潮预报提供参考。模式计算时采用2重嵌套网格,大网格为小网格提供边界水位和边界流速。风场、气压场由连云港观测站实测资料逐步订正后得到。水位计算值与实测结果基本吻合,很好地再现了风暴潮增减水过程。Extratropical storm surge happens frequently in Haizhouwan Bay.At present,statistical method is still used at the operational forecast center for positive and negative setup of the storm surge,and the result is not satisfactory.In this study 0303 extratropical storm surge of 2007 in Haizhouwan Bay is numerically simulated using POM model with an aim of improving operational forecast result.The model was run on two fold embedded grids,in which the boundary water level and current velocity of the internal grid were provided by the calculated results of the external grid.The calculation area of the external grid is 117°～128°E and 25°～41°N,which covers the Bohai Sea,the Yellow Sea and part of the East China Sea,with a spatial resolution of 20′×20′.The time steps of external and internal model are 1 s and 30 s respectively.Sea surface atmosphere pressure was obtained from numeralization of the surface weather map,and the sea surface wind stress from CCMP（Cross-Calibrated,Multi-Platform ocean surface wind velocity product） of NASA.The normal velocity on the solid boundary was set to zero,and the water level on the open boundary was calculated with the harmonic consistent of 8 partial tides of M2,S2,N2,K2,K1,O1,P1 and Q1.The calculation area of the internal grid is 119.1°～119.9°E and 34.5°～35.5°E,which covers the Haizhou Bay.An orthogonal grid was used to adapt to the coastline.There are 50 grids along meridional direction and 60 along transmeridional direction,and the side lengths of the grids are about 1 km.The water level and current velocity on the open boundary were set according to the calculated results of the external grid.The water depths were obtained by bi-linear interpolation of the digitalized 1∶120 000 chart from Rizhao Port to Guanhe River mouth,which is surveyed and mapped by the Navigation Guarantee Department of the Navy Headquarter,the People＇s Liberation Army of China.As the model was set up,a case of 0303 extratropical storm surge of 2007 was studied.From March 3,2007 to

关 键 词：风暴潮 数值模拟 POM 海州湾 

分 类 号：P731.23[天文地球—海洋科学]