globalchange  > 气候减缓与适应
DOI: 10.1007/s00704-018-2536-z
WOS记录号: WOS:000467151000021
论文题名:
Evaluating ENSO teleconnections using observations and CMIP5 models
作者: Roy, Indrani1; Gagnon, Alexandre S.2; Siingh, Devendraa3
通讯作者: Roy, Indrani
刊名: THEORETICAL AND APPLIED CLIMATOLOGY
ISSN: 0177-798X
EISSN: 1434-4483
出版年: 2019
卷: 136, 期:3-4, 页码:1085-1098
语种: 英语
WOS关键词: INDIAN-SUMMER MONSOON ; EL-NINO MODOKI ; ATMOSPHERIC RESPONSE ; CLIMATE-CHANGE ; PACIFIC RIM ; COLD-TONGUE ; EVENTS ; WINTER ; ATLANTIC ; RAINFALL
WOS学科分类: Meteorology & Atmospheric Sciences
WOS研究方向: Meteorology & Atmospheric Sciences
英文摘要:

Bias correction of global and regional climate models is essential for credible climate change projections. This study examines the bias of the models of the Coupled Model Inter-comparison Project Phase 5 (CMIP5) in their simulation of the spatial pattern of sea surface temperature (SSTs) in different phases of the El Nino Southern Oscillation (ENSO) and their teleconnectionshighlighting the strengths and weaknesses of the models in different oceanic sectors. The comparison between the model outputs and the observations focused on the following three features: (i) the typical horseshoe pattern seen in the Pacific Ocean during ENSO events with anomalies in SSTs opposite to the warm/cool tongue, (ii) different signature in the tropical Pacific Ocean from that of the North and tropical Atlantic Ocean, and (iii) spurious signature in the southern hemisphere beyond 45 degrees S. Using these three cases, it was found that the model simulations poorly matched the observations, indicating that more attention is needed on the tropical/extratropical teleconnections associated with ENSO. More importantly, the observed SST coupling between the tropical Pacific Ocean and the Atlantic Ocean is missing in almost all models, and differentiating the models between high/low top did not improve the results. It also found that SSTs in the tropical Pacific Ocean are relatively well simulated when compared with observation. This work has improved our understanding of the simulation of ENSO and its teleconnections in the CMIP5 models and has raised awareness of the bias existing in the models, which requires further attention by climate modellers.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/125353
Appears in Collections:气候减缓与适应

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作者单位: 1.Univ Exeter, Laver Bldg,Streatham Campus,North Pk Rd, Exeter EX4 4QE, Devon, England
2.Univ West Scotland, Sch Sci & Sport, Environm Res Ctr, Paisley PA1 2BE, Renfrew, Scotland
3.IITM, Pune 411008, Maharashtra, India

Recommended Citation:
Roy, Indrani,Gagnon, Alexandre S.,Siingh, Devendraa. Evaluating ENSO teleconnections using observations and CMIP5 models[J]. THEORETICAL AND APPLIED CLIMATOLOGY,2019-01-01,136(3-4):1085-1098
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