气候变化领域集成服务门户(CCPortal): Periodic Mesoscale Eddies in the South China Sea

CCPortal

DOI	10.1029/2019JC015139
	Periodic Mesoscale Eddies in the South China Sea
	Chu X.; Chen G.; Qi Y.
发表日期	2020
ISSN	21699275
卷号	125 期号:1
英文摘要	Although numerous mesoscale eddies are observed in the South China Sea (SCS), a comprehensive study that focuses on periodic eddies has not yet been reported. Periodic eddies are a type of eddies that occur nearly annually in fixed time frames with similar patterns and trajectories. On the basis of in situ and satellite observations, this paper reports a periodic anticyclonic eddy in the western SCS (the Western SCS Anticyclonic Eddy, WAE) and elucidates the underlying processes responsible for its generation and evolution. The WAE is a seasonal phenomenon modulated by the Asian monsoon and basin-scale circulation. Usually, the WAE generates around 112°E, 14°N in February–March, induced by the cyclonic gyre in the northern SCS associated with the winter monsoon. The WAE occupies the western SCS for 5 months and finally dissipates in July due to the reversal of the monsoon and thus the circulation transition. The WAE shows important interannual variations associated with large-scale climate variation, and the Niño-3.4 index could be a potential predictor for its interannual variation. Finally, we summarize 13 periodic eddies in the SCS, including those unreported by previous studies. The period eddies in the SCS exhibit an inverse “L” shape vortex train structure along the western boundary and around the 17°N section, with an anticyclonic “phase” in summer and a cyclonic “phase” in winter. This study provides new knowledge for periodic eddies in the SCS and will benefit targeted observations of periodic eddies. ©2019. American Geophysical Union. All Rights Reserved.
英文关键词	interannual variability; mesoscale eddy; periodic eddy; South China Sea; vertical structure
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187016
作者单位	South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China; College of Oceanography, HoHai University, Nanjing, China
推荐引用方式 GB/T 7714	Chu X.,Chen G.,Qi Y.. Periodic Mesoscale Eddies in the South China Sea[J],2020,125(1).
APA	Chu X.,Chen G.,&Qi Y..(2020).Periodic Mesoscale Eddies in the South China Sea.Journal of Geophysical Research: Oceans,125(1).
MLA	Chu X.,et al."Periodic Mesoscale Eddies in the South China Sea".Journal of Geophysical Research: Oceans 125.1(2020).