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
发表期刊OCEAN DYNAMICS
卷号66期号:5页码:737-750
摘要A 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.
部门归属[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
关键词Osse 3dvar South China Sea Meso-scale Eddies Observing Network
学科领域Oceanography
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15368
专题热带海洋环境国家重点实验室(LTO)
通讯作者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.
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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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