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利用伴随法优化非线性潮汐模型的开边界条件Ⅱ.黄海、东海潮汐资料的同化试验
引用本文:韩桂军,方国洪,马继瑞,刘克修,李冬.利用伴随法优化非线性潮汐模型的开边界条件Ⅱ.黄海、东海潮汐资料的同化试验[J].海洋学报,2001,23(2):26-31.
作者姓名:韩桂军  方国洪  马继瑞  刘克修  李冬
作者单位:1.国家海洋信息中心, 天津 300171;中国科学院海洋研究所, 山东青岛 266071
基金项目:国家自然科学基金资助项目(49876001);国家基础研究"九五"攀登项目"现代地壳运动和地球动力学研究";国家海洋局青年海洋科学基金.
摘    要:本研究基于最优控制理论,采用变分数据同化法,通过建立伴随模型,把观测资料同化到陆架海域潮汐数值模型中去,优化开边界条件,以便提高数值预报的精度.潮汐模型的控制方程为考虑平流项、非线性底摩擦和侧向涡动粘性项的非线性浅水方程组.在第Ⅰ部分建立伴随模型和进行“孪生”数值试验的基础上,给出利用验潮站的水位资料以及TOPEX/Poseidon卫星测高数据在黄海、东海进行变分数据同化试验的数值结果.试验表明利用上述资料对模型进行变分同化校正是可行的.

关 键 词:变分同化    潮汐数值模型    黄海    东海    验潮站    TOPEX/Poseidon
文章编号:0253-4193(2001)02-0025-07
收稿时间:6/7/2000 12:00:00 AM
修稿时间:2000年6月7日

Optimizing open boundary conditions of nonlinear tidal model using adjoint method Ⅱ. Assimilation experiment for tide in the Huanghai Sea and the East China Sea
HAN Gui-jun,FANG Guo-hong,MA Ji-rui,LIU Ke-xiu and LI Dong.Optimizing open boundary conditions of nonlinear tidal model using adjoint method Ⅱ. Assimilation experiment for tide in the Huanghai Sea and the East China Sea[J].Acta Oceanologica Sinica (in Chinese),2001,23(2):26-31.
Authors:HAN Gui-jun  FANG Guo-hong  MA Ji-rui  LIU Ke-xiu and LI Dong
Institution:1.National Marine Data and Information Service, State Oceanic Administration, Tianjin 300171, China;Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China2.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China3.National Marine Data and Information Service, State Oceanic Administration, Tianjin 300171, China
Abstract:In order to improve the prediction of numerical tidal model in continental shelf,the open boundary conditions are optimized by assimilating the observed data into the model in which the adjoint method,based on optimal control theory,is used.The non-linear shallow water equations are considered in which the horizontal kinematic nonlinearities,nonlinear bottom friction and horizontal eddy diffusion are included.On the basis of the establishment of adjoint model and twin-experiment (Part Ⅰ),the variational assimilation results obtained by incorporating the data from tide stations with/without TOPEX/Poseidon altimeter data in the Huanghai Sea and the East China Sea for optimizing the open boundary conditions of the model are reported.The deviations of the model results before and after assimilation from the observed demonstrate the applicability of the variational assimilation.
Keywords:variational assimilation  numerical tidal model  Huanghai Sea  East China Sea  tidal gauges  TOPEX/Poseidon
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