DOI: 10.1002/2016JD024964
论文题名: Inter-El Niño variability in CMIP5 models: Model deficiencies and future changes
作者: Yun K.-S. ; Yeh S.-W. ; Ha K.-J.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2016
卷: 121, 期: 8 起始页码: 3894
结束页码: 3906
语种: 英语
英文关键词: CMIP5
; ENSO diversity
; global warming
; inter-ENSO variability
; model deficiency
Scopus关键词: air-sea interaction
; atmosphere-ocean coupling
; El Nino-Southern Oscillation
; future prospect
; global warming
; La Nina
; persistence
; sea surface temperature
; stochasticity
; temperature anomaly
; uncertainty analysis
英文摘要: Inter-El Niño variability, which represents the diversity in spatiotemporal evolution among El Niño events, has been identified using the first two leading modes of sea surface temperature anomalies along the equator. The first mode represents the transition from El Niño into La Niña and the second mode reveals El Niño's persistence through the following spring. Here we examine the ability of models to capture inter-El Niño variability and predict future changes due to global warming using historical and Representative Concentration Pathway 8.5 simulations of phase 5 of the Coupled Model Intercomparison Project (CMIP5). Most CMIP5 models realistically reproduce the first mode, but three fifths of the models fail to capture the second mode, with considerable intermodel diversity. The 10 best models are therefore selected according to a measurement of pattern correlation coefficients and normalized root-mean-square errors with respect to reproduction of the second mode. The results aggregated from the best models indicate that the first "transition" mode will remain unchanged from the present climate to the future climate; in contrast, the second "persistence" mode changes stochastically across the CMIP5 models. Consequently, we conclude that El Niño's transition into La Niña is the most dominant characteristic of simulated inter-El Niño variability and will remain unswayed under global warming conditions. Model deficiency in simulating El Niño's persistence is a key source of uncertainty in modeling inter-El Niño variability, resulting in difficulty predicting how certain characteristics of El Niño events may change with global warming. ©2016. American Geophysical Union. All Rights Reserved.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62912
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
There are no files associated with this item.
作者单位: Research Center for Climate Sciences, Pusan National University, Busan, South Korea; Department of Marine Sciences and Convergent Technology, Hanyang University, ERICA, Ansan, South Korea; Department of Atmospheric Sciences, College of Natural Science, Pusan National University, Busan, South Korea
Recommended Citation:
Yun K.-S.,Yeh S.-W.,Ha K.-J.. Inter-El Niño variability in CMIP5 models: Model deficiencies and future changes[J]. Journal of Geophysical Research: Atmospheres,2016-01-01,121(8)