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A three-dimensional variational data assimilation system for the South China Sea: preliminary results from observing system simulation experiments
Peng, Shiqiu; Zeng, Xuezhi; Li, Zhijin; Peng, SQ (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Xingang West Rd 164, Guangzhou 510301, Guangdong, Peoples R China.; Peng, SQ (reprint author), Qinzhou Univ, Sch Oceanog, Qinzhou 535000, Peoples R China.
2016
Source PublicationOCEAN DYNAMICS
Volume66Issue:5Pages:737-750
AbstractA three-dimensional variational data assimilation (3DVAR) system based on the Regional Ocean Modeling System (ROMS) is established for the South China Sea (SCS). A set of Observing System Simulation Experiments (OSSEs) are performed to evaluate the performance of this data assimilation system and investigate the impacts of different types of observations on representation of three-dimensional large-scale circulations and meso-scale eddies in the SCS. The pseudo-observations that are examined include sea surface temperatures (SSTs), sea surface heights (SSHs), sparse temperature/salinity (T/S) profiles, sea surface velocities (SSVs), and sea surface salinities (SSSs). The results show that SSHs can extend their impacts into the subsurface or even the deep ocean while other surface observations only have impacts within surface mixed layer. SSVs have similar impacts though confined to their spatial coverage, suggesting that SSVs could be a substitute of SSHs nearshore where SSHs are of poor quality. Despite their sparseness, the T/S profiles improve the representation of the temperature and salinity structures below the mixed layer, and a combination of T/S profiles with surface observations leads to a better representation of the meso-scale eddies. Based on the OSSE results, an affordable observing network for the SCS in the near future is proposed.
Department[Peng, Shiqiu] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Xingang West Rd 164, Guangzhou 510301, Guangdong, Peoples R China; [Zeng, Xuezhi] State Ocean Adm, South China Sea Marine Predict Ctr, Guangzhou 510310, Guangdong, Peoples R China; [Li, Zhijin] CALTECH, Jet Prop Lab, Pasadena, CA USA; [Peng, Shiqiu] Qinzhou Univ, Sch Oceanog, Qinzhou 535000, Peoples R China ; LTO
KeywordOsse 3dvar South China Sea Meso-scale Eddies Observing Network
Subject AreaOceanography
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/15368
Collection热带海洋环境国家重点实验室(LTO)
Corresponding AuthorPeng, SQ (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Xingang West Rd 164, Guangzhou 510301, Guangdong, Peoples R China.; Peng, SQ (reprint author), Qinzhou Univ, Sch Oceanog, Qinzhou 535000, Peoples R China.
Recommended Citation
GB/T 7714
Peng, Shiqiu,Zeng, Xuezhi,Li, Zhijin,et al. A three-dimensional variational data assimilation system for the South China Sea: preliminary results from observing system simulation experiments[J]. OCEAN DYNAMICS,2016,66(5):737-750.
APA Peng, Shiqiu,Zeng, Xuezhi,Li, Zhijin,Peng, SQ ,&Peng, SQ .(2016).A three-dimensional variational data assimilation system for the South China Sea: preliminary results from observing system simulation experiments.OCEAN DYNAMICS,66(5),737-750.
MLA Peng, Shiqiu,et al."A three-dimensional variational data assimilation system for the South China Sea: preliminary results from observing system simulation experiments".OCEAN DYNAMICS 66.5(2016):737-750.
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