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Roles of Western and Eastern Boundary Reflections in the Interannual Sea Level Variations during Negative Indian Ocean Dipole Events
Wang, Jing; Yuan, Dongliang2
2015-07-01
发表期刊JOURNAL OF PHYSICAL OCEANOGRAPHY
卷号45期号:7页码:1804-1821
文章类型Article
摘要The equatorial wave dynamics of sea level variations during negative Indian Ocean dipole (nIOD) events are investigated using the LICOM ocean general circulation model forced with the European Centre for Medium-Range Weather Forecast reanalysis wind stress and heat flux from 1990 to 2001. The work is a continuation of the study by Yuan and Liu, in which the equatorial wave dynamics during positive IOD events are investigated. The model has reproduced the sea level anomalies of satellite altimeter data well. Long equatorial waves extracted from the model output suggest two kinds of negative feedback during nIOD events: the western boundary reflection and the easterly wind bursts. During the strong 1998-99 nIOD event, the downwelling anomalies in the eastern Indian Ocean are terminated by persistent and strong upwelling Kelvin waves from the western boundary, which are reflected from the wind-forced equatorial Rossby waves over the southern central Indian Ocean. During the 1996-97 nIOD, however, the reflection of upwelling anomalies at the western boundary is terminated by the arrival of downwelling equatorial Rossby waves from the eastern boundary reflection in early 1997. Therefore, the negative feedback of this nIOD event is not provided by the western boundary reflection. The downwelling anomalies in the eastern basin during the 1996-97 nIOD event are terminated by easterly wind anomalies over the equatorial Indian Ocean in early 1997. The disclosed equatorial wave dynamics are important to the simulation and prediction of IOD evolution.
DOI10.1175/JPO-D-14-0124.1
收录类别SCI
语种英语
WOS记录号WOS:000357994200003
引用统计
被引频次:4[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/337002/49209
专题海洋环流与波动重点实验室
作者单位1.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
3.Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao, Peoples R China
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Wang, Jing,Yuan, Dongliang. Roles of Western and Eastern Boundary Reflections in the Interannual Sea Level Variations during Negative Indian Ocean Dipole Events[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2015,45(7):1804-1821.
APA Wang, Jing,&Yuan, Dongliang.(2015).Roles of Western and Eastern Boundary Reflections in the Interannual Sea Level Variations during Negative Indian Ocean Dipole Events.JOURNAL OF PHYSICAL OCEANOGRAPHY,45(7),1804-1821.
MLA Wang, Jing,et al."Roles of Western and Eastern Boundary Reflections in the Interannual Sea Level Variations during Negative Indian Ocean Dipole Events".JOURNAL OF PHYSICAL OCEANOGRAPHY 45.7(2015):1804-1821.
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