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DOI | 10.1175/JCLI-D-17-0344.1 |
The North Pacific Gyre Oscillation and Mechanisms of Its Decadal Variability in CMIP5 Models | |
Yi, Daling Li1,2,3; Gan, Bolan1,2; Wu, Lixin1,2; Miller, Arthur J.3 | |
2018-03-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:6页码:2487-2509 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Based on the Simple Ocean Data Assimilation (SODA) product and 37 models from phase 5 of the Coupled Model Intercomparison Project (CMIP5) database, the North Pacific Gyre Oscillation (NPGO) and its decadal generation mechanisms are evaluated by studying the second leading modes of North Pacific sea surface height (SSH) and sea level pressure (SLP) as well as their dynamical connections. It is found that 17 out of 37 models can well simulate the spatial pattern and decadal time scales (10-30 yr) of the NPGO mode, which resembles the observation-based SODA results. Dynamical connections between the oceanic mode (NPGO) and the atmospheric mode [North Pacific Oscillation (NPO)] are strongly evident in both SODA and the 17 models. In particular, about 30%-40% of the variance of the NPGO variability, which generally exhibits a preferred time scale, can be explained by the NPO variability, which has no preferred time scale in most models. Two mechanisms of the decadal NPGO variability that had been proposed by previous studies are evaluated in SODA and the 17 models: 1) stochastic atmospheric forcing and oceanic spatial resonance and 2) low-frequency atmospheric teleconnections excited by the equatorial Pacific. Evaluation reveals that these two mechanisms are valid in SODA and two models (CNRM-CM5 and CNRM-CM5.2), whereas two models (CMCC-CM and CMCC-CMS) prefer the first mechanism and another two models (CMCC-CESM and IPSL-CM5B-LR) prefer the second mechanism. The other 11 models have no evident relations with the proposed two mechanisms, suggesting the need for a fundamental understanding of the decadal NPGO variability in the future. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000427447000025 |
WOS关键词 | CLIMATE VARIABILITY ; MERIDIONAL MODES ; OCEAN CLIMATE ; EL-NINO ; DYNAMICS ; IMPACTS ; REANALYSIS ; SYSTEM |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/20767 |
专题 | 气候变化 |
作者单位 | 1.Ocean Univ China, Phys Oceanog Lab, Collaborat Innovat Ctr Marine Sci & Technol, Qingdao, Peoples R China; 2.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China; 3.Scripps Inst Oceanog, La Jolla, CA 92037 USA |
推荐引用方式 GB/T 7714 | Yi, Daling Li,Gan, Bolan,Wu, Lixin,et al. The North Pacific Gyre Oscillation and Mechanisms of Its Decadal Variability in CMIP5 Models[J]. JOURNAL OF CLIMATE,2018,31(6):2487-2509. |
APA | Yi, Daling Li,Gan, Bolan,Wu, Lixin,&Miller, Arthur J..(2018).The North Pacific Gyre Oscillation and Mechanisms of Its Decadal Variability in CMIP5 Models.JOURNAL OF CLIMATE,31(6),2487-2509. |
MLA | Yi, Daling Li,et al."The North Pacific Gyre Oscillation and Mechanisms of Its Decadal Variability in CMIP5 Models".JOURNAL OF CLIMATE 31.6(2018):2487-2509. |
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