IOCAS-IR  > 海洋环流与波动重点实验室
Weak ENSO Asymmetry Due to Weak Nonlinear Air-Sea Interaction in CMIP5 Climate Models
Sun, Yan1,2; Wang, Fan1,2; Sun, De-Zheng3,4
2016-03-01
Source PublicationADVANCES IN ATMOSPHERIC SCIENCES
Volume33Issue:3Pages:352-364
SubtypeArticle
AbstractState-of-the-art climate models have long-standing intrinsic biases that limit their simulation and projection capabilities. Significantly weak ENSO asymmetry and weakly nonlinear air-sea interaction over the tropical Pacific was found in CMIP5 (Coupled Model Intercomparison Project, Phase 5) climate models compared with observation. The results suggest that a weak nonlinear air-sea interaction may play a role in the weak ENSO asymmetry. Moreover, a weak nonlinearity in air-sea interaction in the models may be associated with the biases in the mean climate-the cold biases in the equatorial central Pacific. The excessive cold tongue bias pushes the deep convection far west to the western Pacific warm pool region and suppresses its development in the central equatorial Pacific. The deep convection has difficulties in further moving to the eastern equatorial Pacific, especially during extreme El Nino events, which confines the westerly wind anomaly to the western Pacific. This weakens the eastern Pacific El Nino events, especially the extreme El Nino events, and thus leads to the weakened ENSO asymmetry in climate models. An accurate mean state structure (especially a realistic cold tongue and deep convection) is critical to reproducing ENSO events in climate models. Our evaluation also revealed that ENSO statistics in CMIP5 climate models are slightly improved compared with those of CMIP3. The weak ENSO asymmetry in CMIP5 is closer to the observation. It is more evident in CMIP5 that strong ENSO activities are usually accompanied by strong ENSO asymmetry, and the diversity of ENSO amplitude is reduced.
KeywordEnso Asymmetry Nonlinearity Air-sea Interaction Cold Tongue Cmip5 Deep Convection
DOI10.1007/s00376-015-5018-6
Indexed BySCI
Language英语
WOS IDWOS:000370030300008
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/112462
Collection海洋环流与波动重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean Dynam & Climate, Qingdao 266071, Peoples R China
3.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80305 USA
4.NOAA, Earth Syst Res Lab, Div Phys Sci, Boulder, CO 80305 USA
First Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Sun, Yan,Wang, Fan,Sun, De-Zheng. Weak ENSO Asymmetry Due to Weak Nonlinear Air-Sea Interaction in CMIP5 Climate Models[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2016,33(3):352-364.
APA Sun, Yan,Wang, Fan,&Sun, De-Zheng.(2016).Weak ENSO Asymmetry Due to Weak Nonlinear Air-Sea Interaction in CMIP5 Climate Models.ADVANCES IN ATMOSPHERIC SCIENCES,33(3),352-364.
MLA Sun, Yan,et al."Weak ENSO Asymmetry Due to Weak Nonlinear Air-Sea Interaction in CMIP5 Climate Models".ADVANCES IN ATMOSPHERIC SCIENCES 33.3(2016):352-364.
Files in This Item:
File Name/Size DocType Version Access License
Weak ENSO Asymmetry (64KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Sun, Yan]'s Articles
[Wang, Fan]'s Articles
[Sun, De-Zheng]'s Articles
Baidu academic
Similar articles in Baidu academic
[Sun, Yan]'s Articles
[Wang, Fan]'s Articles
[Sun, De-Zheng]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Sun, Yan]'s Articles
[Wang, Fan]'s Articles
[Sun, De-Zheng]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Weak ENSO Asymmetry Due to Weak Nonlinear Air-Sea Interaction in CMIP5 Climate Models.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.