DOI: 10.1175/JCLI-D-14-00405.1
Scopus ID: 2-s2.0-84961376555
Title: Diverse influences of ENSO on the East Asian-western Pacific winter climate tied to different ENSO properties in CMIP5 models
Author: Gong H. ; Wang L. ; Chen W. ; Nath D. ; Huang G. ; Tao W.
Source Publication: Journal of Climate
ISSN: 8948755
Publishing Year: 2015
Volume: 28, Issue: 6 pages begin: 2187
pages end: 2202
Language: 英语
Scopus Keyword: Atmospheric pressure
; Atmospheric temperature
; Atmospheric thermodynamics
; Climatology
; Mechanical waves
; Ocean currents
; Oceanography
; Surface waters
; Atmosphere-ocean interactions
; Coupled Model Intercomparison Project
; Coupled models
; ENSO
; Hemi-spheric asymmetries
; Monsoons
; Precipitation anomalies
; Sea surface temperature (SST)
; Climate models
; air-sea interaction
; atmospheric modeling
; climate effect
; El Nino-Southern Oscillation
; monsoon
; Rossby wave
; sea surface temperature
; Walker circulation
English Abstract: The influence of El Niño-Southern Oscillation (ENSO) on the East Asian-western Pacific (EAWP) climate in boreal winter is investigated in the phase 5 of the Coupled Model Intercomparison Project (CMIP5) model results and then compared to that in the phase 3 (CMIP3) results. In particular, the role played by the differences among models in ENSO properties, including the amplitude and longitudinal extension of ENSO's sea surface temperature (SST) pattern, is analyzed. Results show that an eastward shrinking of ENSO's SST pattern leads to quite weak circulation and climatic responses over the EAWP regions in the models. On the contrary, a westward expansion of the SST pattern shifts the anomalous Walker circulation too far west. The resultant precipitation anomalies and lower-tropospheric atmospheric Rossby wave responses both extend unrealistically into the Indian Ocean, and the hemispheric asymmetry of the Rossby wave response is missing. All these features lead to unrealistic climatic impacts of ENSO over the EAWP regions. In contrast to the above two cases, a reasonable longitudinal extension of ENSO's SST pattern corresponds to better ENSO teleconnections over the EAWP regions. Nevertheless, the atmospheric responses over the western Pacific are still located farther west than observed, implying a common bias of CMIP5 models. In this case, a larger amplitude of ENSO variability to some extent helps to reduce model biases and facilitate better climatic responses to ENSO in the EAWP regions. Compared with CMIP3 models, CMIP5 models perform better in representing ENSO's impacts on the East Asian winter climate. © 2015 American Meteorological Society. Funding Project: NSFC, National Natural Science Foundation of China
; NSFC, National Natural Science Foundation of China
Citation statistics:
Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/50550
Appears in Collections: 气候变化事实与影响
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Affiliation: Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing, China; Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Numerical Modeling, Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Gong H.,Wang L.,Chen W.,et al. Diverse influences of ENSO on the East Asian-western Pacific winter climate tied to different ENSO properties in CMIP5 models[J]. Journal of Climate,2015-01-01,28(6)