Study of the wind drag coefficient during the storm Xaver in the German Bight using data assimilation

doi:10.1016/j.dynatmoce.2018.06.001

CORC > 海洋研究所 > 中国科学院海洋研究所

	Study of the wind drag coefficient during the storm Xaver in the German Bight using data assimilation
	Zheng, Xiangyang 1,3; Mayerle, Roberto 2; Wang, Yebao 3; Zhang, Hua 3
刊名	DYNAMICS OF ATMOSPHERES AND OCEANS
	2018-09-01
卷号	83 页码:64-74
关键词	German Bight Wind drag coefficient 4Dvar Storm surge modeling
ISSN号	0377-0265
DOI	10.1016/j.dynatmoce.2018.06.001
通讯作者	Zhang, Hua(hzhang@yic.ac.cn)
英文摘要	Wind stress is the most important driving force for storm surge in coastal waters. Currently, the parameterization of wind stress is still not well developed and is the most uncertain parameters for storm surge models. In this paper, a storm surge model for the German Bight is developed using the model Delft3D. The data assimilation method, adjoint-free 4Dvar, which is relatively easier to be implemented than the adjoint method, is used to assimilate measured water level data into Delft3D. The storm surge prediction is more accurate when we adjusted the drag coefficient using the adjoint free data assimilation method, than in a companion forward model. The drag coefficient is consistent with results from previous studies. The wind drag coefficient is also calculated using results of a wave model. It has been found that the relation between the drag coefficient and wind speed is approximately linear in the deep water. But in the shallow water, wind drag coefficient shows larger variability due to the wave shoaling effect. The linear relation adjusted by data assimilation agrees well with that derived from a wave-related formula. It is also found that wave-related parameterization scheme is necessary for shallow waters.
WOS研究方向	Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences ; Oceanography
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000444661800005
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/160165]
专题	中国科学院海洋研究所
通讯作者	Zhang, Hua
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Univ Kiel, Res & Technol Ctr, Kiel, Germany 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Xiangyang,Mayerle, Roberto,Wang, Yebao,et al. Study of the wind drag coefficient during the storm Xaver in the German Bight using data assimilation[J]. DYNAMICS OF ATMOSPHERES AND OCEANS,2018,83:64-74.
APA	Zheng, Xiangyang,Mayerle, Roberto,Wang, Yebao,&Zhang, Hua.(2018).Study of the wind drag coefficient during the storm Xaver in the German Bight using data assimilation.DYNAMICS OF ATMOSPHERES AND OCEANS,83,64-74.
MLA	Zheng, Xiangyang,et al."Study of the wind drag coefficient during the storm Xaver in the German Bight using data assimilation".DYNAMICS OF ATMOSPHERES AND OCEANS 83(2018):64-74.