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DOI | 10.1002/2017GL076849 |
What Controls ENSO-Amplitude Diversity in Climate Models? | |
Wengel, C.1; Dommenget, D.2; Latif, M.1,3; Bayr, T.1; Vijayeta, A.2 | |
2018-02-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:4页码:1989-1996 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Australia |
英文摘要 | Climate models depict large diversity in the strength of the El Nino/Southern Oscillation (ENSO) (ENSO amplitude). Here we investigate ENSO-amplitude diversity in the Coupled Model Intercomparison Project Phase 5 (CMIP5) by means of the linear recharge oscillator model, which reduces ENSO dynamics to a two-dimensional problem in terms of eastern equatorial Pacific sea surface temperature anomalies (T) and equatorial Pacific upper ocean heat content anomalies (h). We find that a large contribution to ENSO-amplitude diversity originates from stochastic forcing. Further, significant interactions exist between the stochastic forcing and the growth rates of T and h with competing effects on ENSO amplitude. The joint consideration of stochastic forcing and growth rates explains more than 80% of the ENSO-amplitude variance within CMIP5. Our results can readily explain the lack of correlation between the Bjerknes Stability index, a measure of the growth rate of T, and ENSO amplitude in a multimodel ensemble. |
英文关键词 | El Nino stochastic forcing ENSO-amplitude diversity CMIP5 recharge oscillator Bjerknes Stability index |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000427564300034 |
WOS关键词 | HYBRID COUPLED MODEL ; EL-NINO ; RECHARGE OSCILLATOR ; EQUATORIAL PACIFIC ; OCEAN ; PREDICTABILITY ; STABILITY ; STATE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28302 |
专题 | 气候变化 |
作者单位 | 1.GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany; 2.Monash Univ, Sch Earth Atmosphere & Environm, Clayton, Vic, Australia; 3.Univ Kiel, Excellence Cluster Future Ocean, Kiel, Germany |
推荐引用方式 GB/T 7714 | Wengel, C.,Dommenget, D.,Latif, M.,et al. What Controls ENSO-Amplitude Diversity in Climate Models?[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(4):1989-1996. |
APA | Wengel, C.,Dommenget, D.,Latif, M.,Bayr, T.,&Vijayeta, A..(2018).What Controls ENSO-Amplitude Diversity in Climate Models?.GEOPHYSICAL RESEARCH LETTERS,45(4),1989-1996. |
MLA | Wengel, C.,et al."What Controls ENSO-Amplitude Diversity in Climate Models?".GEOPHYSICAL RESEARCH LETTERS 45.4(2018):1989-1996. |
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