Dynamic mechanism of interannual zonal displacements of the eastern edge of the western Pacific warm pool

	Dynamic mechanism of interannual zonal displacements of the eastern edge of the western Pacific warm pool
	Qi Qinghua 1; Zhang Qilong 2; Hou Yijun 3
刊名	Chinese Journal of Oceanology and Limnology
	2010
卷号	28 期号:2 页码:387-397
关键词	western Pacific warm pool zonal displacement zonal current anomalies Kelvin wave Rossby wave
ISSN号	0254-4059
英文摘要	The eastern edge of the western Pacific warm pool (WPWP) in the upper layer (shallower than 50m) exhibits significant zonal displacements on interannual scale. Employing an intermediate ocean model, the dynamic mechanism for the interannual zonal displacement of the WPWP eastern edge in the upper layer is investigated by diagnosing the dynamic impacts of zonal current anomalies induced by wind, waves (Kelvin and Rossby waves), and their boundary reflections. The interannual zonal displacements of the WPWP eastern edge in the upper layer and the zonal current anomaly in the equatorial Pacific west of 110°W for more than 30 years can be well simulated. The modeling results show that zonal current anomalies in the central and eastern equatorial Pacific are the dominant dynamic mechanism for the zonal displacements of the eastern edge of the upper WPWP warm water. Composite analyses suggest that the zonal current anomalies induced by waves dominate the zonal displacement of the WPWP eastern edge, whereas the role played by zonal wind-driven current anomalies is very small. A sensitivity test proves that the zonal current anomalies associated with reflected waves on the western and eastern Pacific boundaries can act as a restoring force that results in the interannual reciprocating zonal motion of the WPWP eastern edge.
资助项目	National Basic Research Program of China ; National Special Project: Chinese Offshore Investigation and Assessment ; Open Fund of State Key Laboratory of Satellite Ocean Environment Dynamics ; Scientific Research Foundation of Third Institute of Oceanography, SOA
WOS研究方向	Oceanography
语种	英语
CSCD记录号	CSCD:3891770
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/29807]
专题	自然资源部第一海洋研究所
作者单位	1.Institute of Oceanology, Chinese Academy of Sciences, Key Laboratory of Ocean Circulation and Waves, Chinese Academy of Sciences;;Key Laboratory of Global Change and Marine-Atmospheric Chemistry, State Oceanic Administration, Beijing 100039, China 2.Institute of Oceanology, Chinese Academy of Sciences, Key Laboratory of Ocean Circulation and Waves, Chinese Academy of Sciences;; State Key Laboratory of Satellite Ocean Environment Dynamics, SOA, Qingdao, Shandong 266071, China 3.Institute of Oceanology, Chinese Academy of Sciences, Key Laboratory of Ocean Circulation and Waves, CAS, Qingdao, Shandong 266071, China
推荐引用方式 GB/T 7714	Qi Qinghua,Zhang Qilong,Hou Yijun. Dynamic mechanism of interannual zonal displacements of the eastern edge of the western Pacific warm pool[J]. Chinese Journal of Oceanology and Limnology,2010,28(2):387-397.
APA	Qi Qinghua,Zhang Qilong,&Hou Yijun.(2010).Dynamic mechanism of interannual zonal displacements of the eastern edge of the western Pacific warm pool.Chinese Journal of Oceanology and Limnology,28(2),387-397.
MLA	Qi Qinghua,et al."Dynamic mechanism of interannual zonal displacements of the eastern edge of the western Pacific warm pool".Chinese Journal of Oceanology and Limnology 28.2(2010):387-397.