An evaluation of sea surface height assimilation using along-track and gridded products based on the Regional Ocean Modeling System (ROMS) and the four-dimensional variational data assimilation

doi:10.1007/s13131-018-1225-1

	An evaluation of sea surface height assimilation using along-track and gridded products based on the Regional Ocean Modeling System (ROMS) and the four-dimensional variational data assimilation
	Zhou Chaojie 1,2; Ding Xiaohua 1; Zhang Jie 2; Yang Jungang 2; Ma Qiang 1
刊名	ACTA OCEANOLOGICA SINICA
	2018-09
卷号	37 期号:9 页码:50-58
关键词	ROMS 4DVAR sea surface height assimilation along-track gridded product
ISSN号	0253-505X
DOI	10.1007/s13131-018-1225-1
英文摘要	Remote sensing products are significant in the data assimilation of an ocean model. Considering the resolution and space coverage of different remote sensing data, two types of sea surface height (SSH) product are employed in the assimilation, including the gridded products from AVISO and the original along-track observations used in the generation. To explore their impact on the assimilation results, an experiment focus on the South China Sea (SCS) is conducted based on the Regional Ocean Modeling System (ROMS) and the four-dimensional variational data assimilation (4DVAR) technology. The comparison with EN4 data set and Argo profile indicates that, the along-track SSH assimilation result presents to be more accurate than the gridded SSH assimilation, because some noises may have been introduced in the merging process. Moreover, the mesoscale eddy detection capability of the assimilation results is analyzed by a vector geometry-based algorithm. It is verified that, the assimilation of the gridded SSH shows superiority in describing the eddy's characteristics, since the complete structure of the ocean surface has been reconstructed by the original data merging.
资助项目	Key Project of Science and Technology of Harbin Institute of Technology at Weihai of China[2014 DXGJ14]
WOS关键词	CALIFORNIA CURRENT SYSTEM ; SOUTH CHINA SEA ; NUMERICAL-MODEL ; TEMPERATURE ; CIRCULATION
WOS研究方向	Oceanography
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000445730400006
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/27229]
专题	自然资源部第一海洋研究所
通讯作者	Yang Jungang
作者单位	1.Harbin Inst Technol Weihai, Dept Math, Weihai 264209, Peoples R China 2.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Zhou Chaojie,Ding Xiaohua,Zhang Jie,et al. An evaluation of sea surface height assimilation using along-track and gridded products based on the Regional Ocean Modeling System (ROMS) and the four-dimensional variational data assimilation[J]. ACTA OCEANOLOGICA SINICA,2018,37(9):50-58.
APA	Zhou Chaojie,Ding Xiaohua,Zhang Jie,Yang Jungang,&Ma Qiang.(2018).An evaluation of sea surface height assimilation using along-track and gridded products based on the Regional Ocean Modeling System (ROMS) and the four-dimensional variational data assimilation.ACTA OCEANOLOGICA SINICA,37(9),50-58.
MLA	Zhou Chaojie,et al."An evaluation of sea surface height assimilation using along-track and gridded products based on the Regional Ocean Modeling System (ROMS) and the four-dimensional variational data assimilation".ACTA OCEANOLOGICA SINICA 37.9(2018):50-58.