IOCAS-IR  > 海洋环流与波动重点实验室
Pacific-North American teleconnection and North Pacific Oscillation: historical simulation and future projection in CMIP5 models
Chen, Zheng1,2; Gan, Bolan1,2; Wu, Lixin1,2; Jia, Fan3
2018-06-01
Source PublicationCLIMATE DYNAMICS
ISSN0930-7575
Volume50Issue:11-12Pages:4379-4403
Corresponding AuthorGan, Bolan(gbl0203@ouc.edu.cn)
AbstractBased on reanalysis datasets and as many as 35 CMIP5 models, this study evaluates the capability of climate models to simulate the spatiotemporal features of Pacific-North American teleconnection (PNA) and North Pacific Oscillation (NPO) in the twentieth century wintertime, and further investigates their responses to greenhouse warming in the twenty-first century. Analysis reveals that while the majority (80%) of models reasonably simulate either the geographical distribution or the amplitude of PNA/NPO pattern, only half of models can well capture both features in space. As for the temporal features, variabilities of PNA and NPO in most models are biased toward higher amplitude. Additionally, most models simulate the interannual variabilities of PNA and NPO, qualitatively consistent with the observation, whereas models generally lack the capability to reproduce the decadal (20-25 years) variability of PNA. As the climate warms under the strongest future warming scenario, the PNA intensity is found to be strengthened, whereas there is no consensus on the direction of change in the NPO intensity among models. The intensification of positive PNA is primarily manifested in the large deepening of the North Pacific trough, which is robust as it is 2.3 times the unforced internal variability. By focusing on the tropical Pacific Ocean, we find that the multidecadal evolution of the North Pacific trough intensity (dominating the PNA intensity evolution) is closely related to that of the analogous trough in the PNA-like teleconnection forced by sea surface temperature anomalies (SSTa) in the tropical central Pacific (CP) rather than the tropical eastern Pacific (EP). Such association is also found to act under greenhouse warming: that is, the strengthening of the PNA-like teleconnection induced by the CP SSTa rather than the EP SSTa is a driving force for the intensification of PNA. This is in part owing to the robust enhancement of the tropical precipitation response to the CP SST variation. Indeed, further inspection suggests that models with stronger intensification of the CP SST variability and its related tropical precipitation response tend to have larger deepening magnitude of the North Pacific trough associated with the PNA variability.
KeywordGlobal warming Pacific-North American teleconnection North Pacific Oscillation Tropical Pacific Ocean CMIP5 climate models
DOI10.1007/s00382-017-3881-9
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFA0601804] ; China National Global Change Major Research Project[2013CB956201] ; National Natural Science Foundation of China (NSFC)[41506009] ; National Natural Science Foundation of China (NSFC)[41490643] ; National Natural Science Foundation of China (NSFC)[41130859] ; National Natural Science Foundation of China (NSFC)[41490640] ; National Natural Science Foundation of China (NSFC)[41506016] ; National Natural Science Foundation of China (NSFC)[41521091]
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000432597400025
PublisherSPRINGER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/159142
Collection海洋环流与波动重点实验室
Corresponding AuthorGan, Bolan
Affiliation1.Ocean Univ China, Phys Oceanog Lab, 5 Yushan Rd, Qingdao 266003, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, 5 Yushan Rd, Qingdao 266003, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
Recommended Citation
GB/T 7714
Chen, Zheng,Gan, Bolan,Wu, Lixin,et al. Pacific-North American teleconnection and North Pacific Oscillation: historical simulation and future projection in CMIP5 models[J]. CLIMATE DYNAMICS,2018,50(11-12):4379-4403.
APA Chen, Zheng,Gan, Bolan,Wu, Lixin,&Jia, Fan.(2018).Pacific-North American teleconnection and North Pacific Oscillation: historical simulation and future projection in CMIP5 models.CLIMATE DYNAMICS,50(11-12),4379-4403.
MLA Chen, Zheng,et al."Pacific-North American teleconnection and North Pacific Oscillation: historical simulation and future projection in CMIP5 models".CLIMATE DYNAMICS 50.11-12(2018):4379-4403.
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