气候变化领域集成服务门户(CCPortal): ENSO Diversity in a tropical stochastic skeleton model for the MJO, El Niño, and dynamic walker circulation

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DOI	10.1175/JCLI-D-20-0447.1
	ENSO Diversity in a tropical stochastic skeleton model for the MJO, El Niño, and dynamic walker circulation
	Yang Q.; Majda A.J.; Chen N.
发表日期	2021
ISSN	08948755
起始页码	3481
结束页码	3501
卷号	34 期号:9
英文摘要	El Niño-Southern Oscillation (ENSO) diversity has a significant impact on global climate and seasonal prediction. However, it is still a challenging problem for present-day global climate models to simulate different types of ENSO events with realistic features simultaneously. In this paper, a tropical stochastic skeleton model for the interactions among wind bursts and the Madden-Julian oscillation (MJO), the El Niño, and the Walker circulation is developed to reproduce both dynamical and statistical features of the ENSO diversity. In this model, the intraseasonal component with state-dependent noise captures general features of wind bursts and the MJO, both of which play important roles in triggering the El Niño. The thermocline feedback is the dominant mechanism for generating the eastern Pacific (EP) El Niño, while a nonlinear zonal advection is incorporated into the model that contributes to the central Pacific (CP) El Niño. Besides, a simple but effective stochastic process describing the multidecadal variation of the background Walker circulation modulates the spatial patterns and occurrence frequency of the EP and CP El Niño. This model succeeds in simulating the quasi-regular moderate EP El Niño, the super El Niño, and the CP El Niño as well as the La Niña simultaneously. It also captures the observed non-Gaussian characteristics of sea surface temperature anomalies in different Niño regions. Individual case studies highlight the outstanding skill of the model in reproducing the observed El Niño episodes and their underlying mechanisms. © 2021 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).
英文关键词	ENSO; Madden-Julian oscillation; Stochastic models; Tropical variability; Walker circulation; Wind bursts
语种	英语
scopus关键词	Atmospheric pressure; Climate models; Climatology; Musculoskeletal system; Nickel compounds; Oceanography; Random processes; Stochastic systems; Surface waters; Tropics; Global climate model; Madden-Julian oscillation; Multidecadal variations; Sea surface temperature anomalies; Seasonal prediction; Southern oscillation; State-dependent noise; Statistical features; Stochastic models
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178598
作者单位	Center for Prototype Climate Modeling, New York University Abu Dhabi, Saadiyat Island, Abu Dhabi, United Arab Emirates; Department of Mathematics, Center for Atmosphere Ocean Science, Courant Institute of Mathematical Sciences, New York University, New York, NY, United States; Department of Mathematics, University of Wisconsin-Madison, Madison, WI, United States
推荐引用方式 GB/T 7714	Yang Q.,Majda A.J.,Chen N.. ENSO Diversity in a tropical stochastic skeleton model for the MJO, El Niño, and dynamic walker circulation[J],2021,34(9).
APA	Yang Q.,Majda A.J.,&Chen N..(2021).ENSO Diversity in a tropical stochastic skeleton model for the MJO, El Niño, and dynamic walker circulation.Journal of Climate,34(9).
MLA	Yang Q.,et al."ENSO Diversity in a tropical stochastic skeleton model for the MJO, El Niño, and dynamic walker circulation".Journal of Climate 34.9(2021).