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题名:
Adjoint free four-dimensional variational data assimilation for a storm surge model of the German North Sea
作者: Zheng, XY; Mayerle, R; Xing, QianGuo(邢前国); Jaramillo, JMF
刊名: OCEAN DYNAMICS
ISSN号: 1616-7341
出版日期: 2016-08-01
卷号: 66, 期号:8, 页码:1037-1050
关键词: Storm surge model ; Wind drag coefficient ; Data assimilation ; Adjoint free 4Dvar
DOI: 10.1007/s10236-016-0962-y
产权排序: [Zheng, Xiangyang; Mayerle, Roberto; Jaramillo, Jose Manuel Fernandez] Univ Kiel, Res & Technol Ctr Westcoast, Kiel, Germany; [Xing, Qianguo] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China
通讯作者: Zheng, XY (reprint author), Univ Kiel, Res & Technol Ctr Westcoast, Kiel, Germany. xyzheng@corelab.uni-kiel.de
作者部门: 海岸带信息集成与综合管理实验室
英文摘要: In this paper, a data assimilation scheme based on the adjoint free Four-Dimensional Variational(4DVar) method is applied to an existing storm surge model of the German North Sea. To avoid the need of an adjoint model, an ensemble-like method to explicitly represent the linear tangent equation is adopted. Results of twin experiments have shown that the method is able to recover the contaminated low dimension model parameters to their true values. The data assimilation scheme was applied to a severe storm surge event which occurred in the North Sea in December 5, 2013. By adjusting wind drag coefficient, the predictive ability of the model increased significantly. Preliminary experiments have shown that an increase in the predictive ability is attained by narrowing the data assimilation time window.
研究领域[WOS]: Oceanography
关键词[WOS]: STRESS DRAG COEFFICIENT ; WIND-STRESS ; OCEAN ; SURFACE ; ROUGHNESS ; WAVES ; TIDES
文章类型: Article
收录类别: SCI
语种: 英语
WOS记录号: WOS:000380133000009
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/17084
Appears in Collections:海岸带信息集成与综合管理实验室_期刊论文

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作者单位: 1.Univ Kiel, Res & Technol Ctr Westcoast
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res

Recommended Citation:
Zheng, XY,Mayerle, R,Xing, QG,et al. Adjoint free four-dimensional variational data assimilation for a storm surge model of the German North Sea[J]. OCEAN DYNAMICS,2016,66(8):1037-1050.
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