DOI: 10.1007/s00382-011-1157-3
Scopus记录号: 2-s2.0-84862222911
论文题名: How well do current climate models simulate two types of El Nino?
作者: Ham Y.-G. ; Kug J.-S.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 39, 期: 2017-01-02 起始页码: 383
结束页码: 398
语种: 英语
英文关键词: Climate model
; ENSO
; Two types of El Nino
英文摘要: In this study, we evaluate the fidelity of current climate models in simulating the two types of El Nino events using the pre-industrial output in CMIP3 archives. It is shown that a few climate models simulate the two types of El Nino events to some extent, while most of the models have serious systematic problems in simulating distinctive patterns of sea-surface temperature (SST) and precipitation anomaly associated with the two types of El Nino; that is, they tend to simulate a single type of El Nino. It is shown that the ability of climate models in simulating the two types of El Nino is related to the sensitivity of the atmospheric responses to the SST anomaly patterns. Models whose convective location is shifted to the east (west) as the SST anomaly center moves to the east (west) tends to simulate the two types of El Nino events successfully. On the other hand, models whose location of convective anomaly is confined over the western or central Pacific tends to simulate only the single type of El Nino event. It is also shown that the confinement of the convective anomaly over the western or central Pacific is closely linked to the dry bias and the associated cold bias over the eastern Pacific. That is, because positive El Nino SST anomalies over the eastern Pacific cannot increase local convection effectively when the total SSTs are still too cold due to a cold bias. This implies that the realistic simulation of climatology, especially over the equatorial eastern Pacific, is essential to the successful simulation of the two types of El Nino. © 2011 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55232
Appears in Collections: 过去全球变化的重建
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作者单位: Global Modeling and Assimilation Office, GSFC/NASA, Greenbelt, MD, United States; Goddard Earth Sciences Technology and Research Studies and Investigations, Universities Space Research Association, Greenbelt, MD, United States; Korea Ocean Research and Development Institute, Ansan, South Korea
Recommended Citation:
Ham Y.-G.,Kug J.-S.. How well do current climate models simulate two types of El Nino?[J]. Climate Dynamics,2012-01-01,39(2017-01-02)