Characteristics of oceanic mesoscale variabilities associated with the inverse kinetic energy cascade

doi:10.1007/s13131-021-1814-2

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Characteristics of oceanic mesoscale variabilities associated with the inverse kinetic energy cascade
	Li, Mengmeng 1,2; Liu, Zhiliang 5,6; Li, Jianing 3,4; Pang, Chongguang 2,3
刊名	ACTA OCEANOLOGICA SINICA
	2021-07-01
卷号	40 期号:7 页码:42-57
关键词	mesoscale eddy inverse cascade scalar wavenumber spectrum spectral slope anisotropy
ISSN号	0253-505X
DOI	10.1007/s13131-021-1814-2
通讯作者	Liu, Zhiliang(zhlliu3897@hevttc.edu.cn)
英文摘要	Oceanic geostrophic turbulence theory predicts significant inverse kinetic energy (KE) cascades at scales larger than the energy injection wavelength. However, the characteristics of the mesoscale variabilities associated with the inverse KE cascade in the real oceans have not been clear enough up to now. To further examine this problem, we analyzed the spectral characteristics of the oceanic mesoscale motions over the scales of inverse KE cascades based on high-resolution gridded altimeter data. The applicability of the quasigeostrophic (QG) turbulence theory and the surface quasigeostrophic (SQG) turbulence theory in real oceans is further explored. The results show that the sea surface height (SSH) spectral slope is linearly related to the eddy-kinetic-energy (EKE) level with a high correlation coefficient value of 0.67. The findings also suggest that the QG turbulence theory is an appropriate dynamic framework at the edge of high-EKE regions and that the SQG theory is more suitable in tropical regions and low-EKE regions at mid-high latitudes. New anisotropic characteristics of the inverse KE cascade are also provided. These results indicate that the along-track spectrum used by previous studies cannot reveal the dynamics of the mesoscale variabilities well.
资助项目	National Key R&D Program of China[2016YFC0301203] ; National Key R&D Program of China[2019YFC1407903] ; Natural Science Foundation of Hebei Province[D2019407046] ; Hebei Science and Technology Project[19273301D] ; NSFC-Shangdong Province Joint Fund[U1406401]
WOS研究方向	Oceanography
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000693075700004
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/176364]
专题	海洋研究所_海洋环流与波动重点实验室
通讯作者	Liu, Zhiliang
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao 266237, Peoples R China 4.Ocean Univ China, Phys Oceanog Lab, Qingdao 266100, Peoples R China 5.Hebei Normal Univ Sci & Technol, Hebei Key Lab Ocean Dynam Resources & Environm, Qinhuangdao 066004, Hebei, Peoples R China 6.Hebei Normal Univ Sci & Technol, Marine Sci Res Ctr, Qinhuangdao 066004, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Li, Mengmeng,Liu, Zhiliang,Li, Jianing,et al. Characteristics of oceanic mesoscale variabilities associated with the inverse kinetic energy cascade[J]. ACTA OCEANOLOGICA SINICA,2021,40(7):42-57.
APA	Li, Mengmeng,Liu, Zhiliang,Li, Jianing,&Pang, Chongguang.(2021).Characteristics of oceanic mesoscale variabilities associated with the inverse kinetic energy cascade.ACTA OCEANOLOGICA SINICA,40(7),42-57.
MLA	Li, Mengmeng,et al."Characteristics of oceanic mesoscale variabilities associated with the inverse kinetic energy cascade".ACTA OCEANOLOGICA SINICA 40.7(2021):42-57.