IOCAS-IR  > 海洋环流与波动重点实验室
Geographical distribution and anisotropy of the inverse kinetic energy cascade, and its role in the eddy equilibrium processes
Wang, Shihong1,2; Liu, Zhiliang1; Pang, Chongguang1
2015-07-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
Volume120Issue:7Pages:4891-4906
SubtypeArticle
AbstractThe geographic character of the inverse cascade is analyzed based on the spectral kinetic energy flux calculated in the global ocean, using sea surface height (SSH) data from satellites, reanalysis data, and model outputs. It is shown that the strongest inverse cascade occurs mostly in high-energy eastward-flowing currents, such as the Antarctic Circumpolar Current (ACC), the Kuroshio Extension, and the Gulf Stream, which matches the global distribution pattern of the eddy kinetic energy (EKE). Hence, the eddy scales predicted by the local linear baroclinic instability L-bci and from the altimeter observation L-eddy are mapped out and compared with the energy injection scale L-inj and the arrest-start scale Larrest-start of the inverse cascade, respectively. Generally, Lbci agrees well with Linj in the midlatitude and high-latitude oceans, especially in the Northern Hemisphere. Leddy falls within the arrest ranges of the inverse cascade and is quite close to Larrest-start. Finally, the depth dependence and the anisotropy of the inverse kinetic energy cascade are also diagnosed in the global ocean. We have found that the strength of the inverse cascades decreases with increasing depth, but the global pattern of the strength is nearly invariable. Meanwhile, the variations in depth hardly affect the Linj and Larrest-start. After considering the anisotropy in the spectral flux calculation, a possible inertial range for the zonal spectral kinetic energy flux is expected, where the cascade magnitude will keep a nearly constant negative value associated with the oceanic zonal jets.
DOI10.1002/2014JC010476
Indexed BySCI
Language英语
WOS IDWOS:000359776000015
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/50107
Collection海洋环流与波动重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
First Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang, Shihong,Liu, Zhiliang,Pang, Chongguang. Geographical distribution and anisotropy of the inverse kinetic energy cascade, and its role in the eddy equilibrium processes[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2015,120(7):4891-4906.
APA Wang, Shihong,Liu, Zhiliang,&Pang, Chongguang.(2015).Geographical distribution and anisotropy of the inverse kinetic energy cascade, and its role in the eddy equilibrium processes.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,120(7),4891-4906.
MLA Wang, Shihong,et al."Geographical distribution and anisotropy of the inverse kinetic energy cascade, and its role in the eddy equilibrium processes".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 120.7(2015):4891-4906.
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