Temporal and spatial statistics of travelling eddy variability in the South China Sea

doi:10.1007/s10236-019-01282-2

IOCAS-IR > 海洋环流与波动重点实验室

	Temporal and spatial statistics of travelling eddy variability in the South China Sea
	Zhang, Meng 1; von Storch, Hans 1,2; Chen, Xueen 2; Wang, Dongxiao 3; Li, Delei 4
	2019-08-01
发表期刊	OCEAN DYNAMICS
ISSN	1616-7341
卷号	69 期号:8 页码:879-898
通讯作者	von Storch, Hans(hvonstorch@web.de)
摘要	The variability across decades of years of migrating eddy activities in the South China Sea (SCS) has not yet been documented. We employ a daily global eddy-resolving (0.1 degrees) model product called STORM that covers a period of 1950-2010 to fill this gap. The frequency and pattern of eddy occurrence in the simulation is broadly consistent with satellite-based (AVISO) data. On average, annually, 28 anticyclonic travelling eddy (AE) tracks and 54 cyclonic travelling eddy (CE) tracks with long travel lengths were derived from the discrete sea surface height anomaly fields of STORM. Eddy centers most frequently pass by the Luzon Strait and along the continental slope in the northern SCS to the Vietnam coast. The lifespans range from 6 to 240 days for AEs and to 293 days for CEs, and the longest travel lengths are 1941 km and 1988 km, respectively. EOFs of the spatial fields of eddy diameter (ED), eddy intensity (EI), and eddy number (EN) show almost white eigenvalue spectra, when calculated on the model's 0.1-degree grid, but when the data are coarsened to grids with 1-degree and 2-degree grid spacing, meaningful structures emerge. EI and ED are highly correlated on both seasonal and interannual time scales. In general, CEs are much more active than AEs, but the AEs with high intensities or large diameters are more frequent than similar CEs. The monthly ED, EI, and EN exhibit annual cycles, which are, however, not very stable. The variabilities of annual means of ED, EI, and EN are large at interannual time scales, are little at interdecadal sales, and exhibit hardly a trend. The sizes and intensities of eddies in the SCS are hardly connected to the ENSO-variability in the tropical Pacific. The EOFs, the weakness of the annual cycle stability and the absence of a correlation with ENSO, point to a massive presence of internal variability (as opposed to variability provoked by large-scale drivers).
关键词	South China Sea Statistics of travelling eddies Variability of characteristics of eddies Simulation with eddy-permitting model Internal vs. external variability
DOI	10.1007/s10236-019-01282-2
收录类别	SCI
语种	英语
资助项目	China Scholarship Council[201406330048] ; National Key Research and Development Plan[2017YFA0604101] ; Taishan Scholars Program ; China Scholarship Council[201406330048] ; National Key Research and Development Plan[2017YFA0604101] ; Taishan Scholars program
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000489564300001
出版者	SPRINGER HEIDELBERG
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/163233
专题	海洋环流与波动重点实验室
通讯作者	von Storch, Hans
作者单位	1.Helmholtz Zentrum Geesthacht Ctr Mat & Coastal Re, Inst Coastal Res, Max Planck Str 1, D-21502 Geesthacht, Germany 2.Ocean Univ China, Coll Ocean & Atmospher Sci, Qingdao, Shandong, Peoples R China 3.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Meng,von Storch, Hans,Chen, Xueen,et al. Temporal and spatial statistics of travelling eddy variability in the South China Sea[J]. OCEAN DYNAMICS,2019,69(8):879-898.
APA	Zhang, Meng,von Storch, Hans,Chen, Xueen,Wang, Dongxiao,&Li, Delei.(2019).Temporal and spatial statistics of travelling eddy variability in the South China Sea.OCEAN DYNAMICS,69(8),879-898.
MLA	Zhang, Meng,et al."Temporal and spatial statistics of travelling eddy variability in the South China Sea".OCEAN DYNAMICS 69.8(2019):879-898.

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