两种网格下的SWAN模式对黄渤海海浪模拟比较-海洋预报

两种网格下的SWAN模式对黄渤海海浪模拟比较

单位：1. 解放军理工大学气象学院, 江苏南京211101;
2. 解放军理工大学气象学院, 江苏南京211101;72517部队, 山东济南250022

分类号：研究与分析

出版年·卷·期（页码）：2011·28·第四期（48-57）

摘要：

采用NCEP再分析风场作为驱动海浪模式的强迫场,在考虑相同物理过程和分辨率基础上,SWAN海浪模式分别采用矩形网格和非结构三角网格对2000年12月黄渤海海域波浪场进行模拟,并将模拟的有效波高与海洋浮标观测数据作对比分析,结果表明,SWAN模式运用两种网格均能够取得良好的模拟结果,相对矩形网格,非结构三角网格模拟有效波高效果较好,且能够较好的刻画复杂地形。最后,采用局部加密的非结构三角网格对黄渤海波浪场进行模拟验证,分析表明非结构三角网格的局部加密方案可以进一步提高加密区域的有效波高模拟精度。

Driven by the NCEP reanalyzed winds,the rectangular and unstructured triangular grids is applied respectively to the SWAN(Simulating Waves Nearshore) wave model based on the same physical processes and grid resolution to simulate the ocean wave field of the Bohai Sea and the Yellow Sea in December 2000.The simulated significant wave height is compared with the observed data from the buoys.The result demonstrates that the SWAN model used by both kinds of grids can reproduce reasonably the significant wave height.Comparing to that of the rectangular grid,application of the unstructured triangular grid can not only obtain better result,but also has the advantage of portraying the complex coastal regions.Moreover,a refined unstructured triangular grid is used by the SWAN model to simulate the ocean wave field,and the results show that the application of refined unstructured triangular grid can further improve the accuracy of the simulated significant wave height in the refined regions.

参考文献：

[1] Melville,W K.The role of surface-wave breaking in air-sea interaction[J].Ann.Rev.Fluid Mech.,1996,28:279-321.
[2] Shi J,Zhao D L,Li X Q,et al.New wave-dependent formulae for sea spray flux at air-sea interface[J].Journal of Hydrodynamics,2009,21(4):573-581.
[3] 蒋小平,钟中,张金善等.台风Winnie(1997)影响下海浪的数值模拟研究[J].热带气象学报,2007,23(4):376-382.
[4] 杨德周,尹宝树,徐艳青等.SWAN浅水波浪模式在渤海的应用研究-Phillips线性增长比例系数的改进[J].水科学进展,2005,16(5):710-714.
[5] 梅婵娟,赵栋梁,史剑.两种海浪模式对中国黄海海域浪高模拟能力的比较[J].海洋预报,2008,25 (2):92-98.
[6] 胡克林,丁平兴,朱首贤等.长江口附近海域台风浪的数值模拟——以鹿沙台风和森拉克台风为例[J].海洋学报,2004,26(5):23-33.
[7] 黄必桂.渤海海浪的数值模拟和涌浪对风浪影响的研究[D].中国海洋大学,2009.
[8] Qi J H,Chen C S,Beardsley Robert C,et al.An unstructured-grid finite-volume surface wave model (FVCOM-SWAVE):Implementation,validations and applications[J].Ocean Modelling,2009,28:153-166.
[9] Whitham G B.A general approach to linear and non-linear dispersive waves using a Lagrangian[J].J Fluid Mech,1965,22:273-283.
[10] Bretherthon F P,Garrett C J R.Wave trains in inhomogeneous moving media[J].Proc Roy Soc London,1968,A302:529-554.
[11] 葛义军,钟中,李杰.SWAN模式中谱空间离散方案对台风浪模拟的影响研究[J].海洋通报,2008,27(6):1-8.
[12] 蒋小平,钟中,张金善等.台风浪模拟预报中的风场比较研究[J].海洋通报,2007,26(2):11-19.

服务与反馈：

【文章下载】【发表评论】【查看评论】【加入收藏】