SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)
Layered model and insights into the vertical coupling of the South China Sea circulation in the upper and middle layers
Quan, Qi1; Xue, Huijie2
2018
Source PublicationOCEAN MODELLING
ISSN1463-5003
Volume129Pages:75
AbstractBy changing the calculation of the pressure gradient, we convert a 3.5-layer model to a 3-layer model that includes entrainment and detrainment as well as interfacial friction between layers. In comparison with the reanalysis and satellite altimetry data, the model can well reproduce the circulation and reveal the primary dynamics in the South China Sea. We then use the 3-layer model to investigate the vertical coupling of the South China Sea circulation in the upper and middle layers. It is found that the horizontal pressure gradient, which reflects the depth-integrated effect of the thickness variation across all layers, plays a key role in the dynamical link between layers. Perturbations induced by changing the monsoonal wind or the Kuroshio in two comparative experiments are able to excite cyclonically propagating, slope-trapped waves and the westward planetary Rossby waves to modulate the basin wide circulation in all layers, indicating the dynamically similar adjustments throughout the water column in the SCS in both experiments. Even though the interface frictional dissipation and the entrainment/detrainment induced momentum exchange are small, analysis suggests that the exchange velocity between layers, which varies as the waves pass by, contributes considerably to the redistribution of the layer thickness hence the pressure gradient field in each layer to regulate the variability of the SCS circulation.
DepartmentLTO
KeywordLayered model South China Sea circulation Vertical coupling Entrainment/Detrainment
DOI10.1016/j.ocemod.2018.06.006
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17579
Collection热带海洋环境国家重点实验室(LTO)
Affiliation1.Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, 164 West Xingang Rd, Guangzhou 510301, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Univ Maine, Sch Marine Sci, Orono, ME 04469 USA
Recommended Citation
GB/T 7714
Quan, Qi,Xue, Huijie. Layered model and insights into the vertical coupling of the South China Sea circulation in the upper and middle layers[J]. OCEAN MODELLING,2018,129:75, 92.
APA Quan, Qi,&Xue, Huijie.(2018).Layered model and insights into the vertical coupling of the South China Sea circulation in the upper and middle layers.OCEAN MODELLING,129,75.
MLA Quan, Qi,et al."Layered model and insights into the vertical coupling of the South China Sea circulation in the upper and middle layers".OCEAN MODELLING 129(2018):75.
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