globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-16-0365.1
Scopus记录号: 2-s2.0-85008166429
论文题名:
Diverse relationship between ENSO and the northwest pacific summer climate among CMIP5 models: Dependence on the enso decay pace
作者: Jiang W.; Huang G.; Hu K.; Wu R.; Gong H.; Chen X.; Tao W.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期:1
起始页码: 109
结束页码: 127
语种: 英语
Scopus关键词: Atmospheric pressure ; Atmospheric thermodynamics ; Climatology ; Mechanical waves ; Oceanography ; Atmosphere-ocean interactions ; Coupled general circulation models ; Coupled Model Intercomparison Project ; ENSO ; Model errors ; Model evaluation/performance ; Southern oscillation ; State of the art ; Climate models
英文摘要: The impacts of El Niño-Southern Oscillation (ENSO) on the northwest Pacific (NWP) climate during ENSO decay summers are investigated based on the outputs of 37 coupled general circulation models (CGCMs) from phase 5 of the Coupled Model Intercomparison Project (CMIP5). Large intermodel spread exists in the 37 state-of-the-art CGCMs in simulating the ENSO-NWP relationship. Eight high-skill and eight low-skill models are selected to explore how the bias arises. By comparing the results among high-skill models, low-skill models, and observations, the simulation skill of the ENSO-NWP relationship largely depends on whether the model can reasonably reproduce the ENSO decay pace. Warm SST anomaly bias in the equatorial western Pacific (EWP) is found to persist into the ENSO decay summer in the low-skill models, obstructing the formation of an anomalous anticyclone in the NWP. Further analysis shows that the warm EWP SST anomaly bias is possibly related to the excessive westward extension of cold tongue in these models, which increases climatological zonal SST gradient in the EWP. Under westerly wind anomalies, the larger climatological zonal SST gradient could lead to warmer zonal advections in the low-skill models than that in the high-skill models, which could lead to warm EWP SST anomaly bias in the low-skill models. And the warm EWP SST anomaly bias could strengthen westerly wind anomalies over the western Pacific by triggering convection and atmospheric Rossby waves, which, in turn, could maintain the warm SST anomaly bias in the EWP. © 2017 American Meteorological Society.
资助项目: NSFC, National Natural Science Foundation of China ; NSFC, National Natural Science Foundation of China ; NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49864
Appears in Collections:气候变化事实与影响

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作者单位: State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Joint Center for Global Change Studies, Beijing, China; Shenzhen Key Laboratory of Severe Weather in South China, Shenzhen, China; Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China

Recommended Citation:
Jiang W.,Huang G.,Hu K.,et al. Diverse relationship between ENSO and the northwest pacific summer climate among CMIP5 models: Dependence on the enso decay pace[J]. Journal of Climate,2017-01-01,30(1)
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