渤海湾水位、流场的一个数值预报模式  

A Forecast Model of Bohai Bay for Water Level and Current

作　　者：陈满春[1] 刘克修[2] 

机构地区：[1]中国海洋大学环境学院,山东青岛266003 [2]国家海洋信息中心,天津300171

出　　处：《海洋通报》2006年第4期16-22,共7页Marine Science Bulletin

基　　金：国家海洋局青年基金项目(2001202)资助

摘　　要：本文利用普林斯顿海洋模式(POM),建立了渤、黄海风增水预报模式和渤海湾水位海流预报模式;利用正交曲线网格提高重点区域的分辨率;采用美国海洋大气局(NOAA)全球预报风场和气压场作为模式表面强迫场,将计算域边界上的天文潮预报值与风增水模式预报的余水位相叠加构建模式的边界条件,在正压条件下,模拟了渤海湾2002年的水位流场过程。结果表明,模式能够较好地再现计算域内天文潮和综合水位的预报,域内10个潮位站模式与实测分析的m1和M2分潮的振幅与迟角差均不超过5.1cm和6.3°,15个潮流站模式与实测分析的m1和M2分潮流的振幅与迟角差均不超过7.5cm/s和15.8°,模式预报的水位值与塘沽站实测值非常接近,预报精度较单纯的天文潮预报有明显提高。A forecast model based on the Princeton Ocean Model （POM） in the Bohai Bay area is developed for predicting water level and current. The model grid is curve linear and orthogonal to increase the model＇s horizontal resolution in the Tianjin harbor area. The aviation wind of NOAA is adopted as the model wind forcing field and the results of Bohai and Yellow model with the addition of the tide are taken as the open boundary condition. The model system simulates the water level and current of the year 2002 for Bohai Bay and the results show that the model could predict the tide and tidal current accurately. The averaged differences in the tide amplitude and phase lag of m1 and M2 constituents at 10 stations are 5.1 cm and 6.3 deg. respectively. Also, the averaged differences in the current speed and direction of m1 and M2 constituents at 15 stations are below 7.5 cm/s and 15.8 deg. The model forecasted water level and current at the Tanggu station are very close to the observations and the models prediction precision is greatly improved as compared with the astronomical prediction.

关 键 词：数值模式 水位 流场 预报方法 渤海湾 

分 类 号：P731.3[天文地球—海洋科学]