Behaviors of nonlinearities modulating the El Nio events induced by optimal precursory disturbances

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

	Behaviors of nonlinearities modulating the El Nio events induced by optimal precursory disturbances
	Duan, Wansuo 1; Yu, Yanshan 2; Xu, Hui 1; Zhao, Peng1,3
刊名	CLIMATE DYNAMICS
	2013-03-01
卷号	40 期号:5-6 页码:1399-1413
关键词	El Nino Nonlinearity Optimal perturbation
ISSN号	0930-7575
通讯作者	Duan, WS
中文摘要	In the present paper, we explore the manner in which nonlinearities modulate El Nio events by investigating the optimal precursory disturbance for El Nio events in the Zebiak-Cane model. The initial anomalies of conditional nonlinear optimal perturbations (CNOPs) and linear singular vectors (LSVs) are investigated. The CNOPs evolve into stronger El Nio events than the LSVs and act as the optimal precursor for El Nio events. By examining the role of nonlinearities in El Nio events induced by CNOPs and LSVs, we determined that, when the initial anomalies of the CNOP and LSV structures are large, the nonlinearities enhance CNOP-El Nio events but suppress LSV-El Nio events. Nonlinearities in the Zebiak-Cane model arise from nonlinear temperature advection (NTA), sub-surface temperature parameterization (STP), and wind stress anomalies (WSA). Using these types of nonlinearities, we trace the approach of the nonlinearities modulating the CNOP- and LSV-El Nio events. The results demonstrate that nonlinearities that originate from NTA enhance both CNOP-El Nio events and LSV-El Nio events, while nonlinearities originating from STP and WSA suppress these events. For the CNOP-El Nio events, the enhancement effect of NTA is larger than the suppression effect of STP and WSA, resulting in the combined effect of the nonlinearities in the Zebiak-Cane model being an enhancement of the CNOP-El Nio events. However, for the LSV-El Nio events, the enhancement effect of NTA is smaller than the suppression effect of WSA and STP. Consequently, the combined effect of the nonlinearities in the Zebiak-Cane model suppresses the LSV-El Nio events.
英文摘要	In the present paper, we explore the manner in which nonlinearities modulate El Nio events by investigating the optimal precursory disturbance for El Nio events in the Zebiak-Cane model. The initial anomalies of conditional nonlinear optimal perturbations (CNOPs) and linear singular vectors (LSVs) are investigated. The CNOPs evolve into stronger El Nio events than the LSVs and act as the optimal precursor for El Nio events. By examining the role of nonlinearities in El Nio events induced by CNOPs and LSVs, we determined that, when the initial anomalies of the CNOP and LSV structures are large, the nonlinearities enhance CNOP-El Nio events but suppress LSV-El Nio events. Nonlinearities in the Zebiak-Cane model arise from nonlinear temperature advection (NTA), sub-surface temperature parameterization (STP), and wind stress anomalies (WSA). Using these types of nonlinearities, we trace the approach of the nonlinearities modulating the CNOP- and LSV-El Nio events. The results demonstrate that nonlinearities that originate from NTA enhance both CNOP-El Nio events and LSV-El Nio events, while nonlinearities originating from STP and WSA suppress these events. For the CNOP-El Nio events, the enhancement effect of NTA is larger than the suppression effect of STP and WSA, resulting in the combined effect of the nonlinearities in the Zebiak-Cane model being an enhancement of the CNOP-El Nio events. However, for the LSV-El Nio events, the enhancement effect of NTA is smaller than the suppression effect of WSA and STP. Consequently, the combined effect of the nonlinearities in the Zebiak-Cane model suppresses the LSV-El Nio events.
学科主题	Meteorology & Atmospheric Sciences
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Meteorology & Atmospheric Sciences
研究领域[WOS]	Meteorology & Atmospheric Sciences
关键词[WOS]	NINO-SOUTHERN-OSCILLATION ; OCEAN RECHARGE PARADIGM ; OPTIMAL PERTURBATION ; COUPLED MODEL ; INTERANNUAL VARIABILITY ; ENSO PREDICTABILITY ; DECADAL VARIABILITY ; CONCEPTUAL-MODEL ; ATMOSPHERE MODEL ; PREDICTION
收录类别	SCI
原文出处	10.1007/s00382-012-1557-z
语种	英语
WOS记录号	WOS:000315440100021
公开日期	2014-07-17
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/16394]
专题	海洋研究所_海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Atmospher Phys, LASG, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Duan, Wansuo,Yu, Yanshan,Xu, Hui,et al. Behaviors of nonlinearities modulating the El Nio events induced by optimal precursory disturbances[J]. CLIMATE DYNAMICS,2013,40(5-6):1399-1413.
APA	Duan, Wansuo,Yu, Yanshan,Xu, Hui,&Zhao, Peng.(2013).Behaviors of nonlinearities modulating the El Nio events induced by optimal precursory disturbances.CLIMATE DYNAMICS,40(5-6),1399-1413.
MLA	Duan, Wansuo,et al."Behaviors of nonlinearities modulating the El Nio events induced by optimal precursory disturbances".CLIMATE DYNAMICS 40.5-6(2013):1399-1413.