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Ocean dynamical processes associated with the tropical Pacific cold tongue mode
Li, Yang1,2; Li, Jianping2,3; Zhang, Wenjun4; Zhao, Xia5; Xie, Fei2,3; Zheng, Fei6
2015-09-01
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
卷号120期号:9页码:6419-6435
文章类型Article
摘要The cold tongue mode (CTM) is the second EOF mode of sea surface temperature anomaly (SSTA) variability over the tropical Pacific and represents the out- of- phase relationship in SSTA variability between the Pacific cold tongue region and elsewhere in the tropical Pacific. A positive CTM is characterized by cold SSTA in the Pacific cold tongue region and warm SSTA in the rest of the tropical Pacific, with conditions reversed for a negative CTM. The CTM is a coupled air- sea mode, and its long- term variability is most probably induced by ocean dynamical processes in response to global warming [ Zhang et al., 2010]. This study focuses on the specific ocean dynamical processes associated with the CTM and its possible relationship with global warming. A heat budget diagnosis of ocean temperature in the eastern equatorial Pacific shows that the net heat flux plays a damping role and the four ocean advection terms (2u0@ T =@ x, 2 v@ T0=@ y, 2 w@ T0=@ z, and 2w0@ T =@ z) contribute to the temperature change associated with the CTM. Among them, the vertical advection of the anomalous temperature by the mean upwelling (2 w@ T0=@ z) makes a dominant contribution to the long- term change in the CTM. The long- term change of the term 2 w@ T0=@ z is controlled mainly by the decreasing vertical gradient of the ocean temperature anomaly (@ T0=@ z). The other three advection terms make a minor contribution to the long- term change in the CTM.
关键词Cold Tongue Mode Ocean Dynamical Processes Long-term Variability Global Warming Eastern Equatorial Pacific
DOI10.1002/2015JC010814
收录类别SCI
语种英语
WOS记录号WOS:000363470300030
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/73942
专题海洋环流与波动重点实验室
海洋地质与环境重点实验室
作者单位1.Lanzhou Univ, Coll Atmospher Sci, Lanzhou 730000, Peoples R China
2.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing 100875, Peoples R China
3.Joint Ctr Global Change Studies, Beijing, Peoples R China
4.Nanjing Univ Informat Sci & Technol, Minist Educ, Key Lab Meteorol Disaster, Collaborat Innovat Ctr Forecast & Evaluat Meteorl, Nanjing, Jiangsu, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Lab Ocean Circulat & Waves, Qingdao, Peoples R China
6.Chinese Acad Sci, State Key Lab Numer Modeling Atmospher Sci & Geop, Inst Atmospher Phys, Beijing, Peoples R China
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Li, Yang,Li, Jianping,Zhang, Wenjun,et al. Ocean dynamical processes associated with the tropical Pacific cold tongue mode[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2015,120(9):6419-6435.
APA Li, Yang,Li, Jianping,Zhang, Wenjun,Zhao, Xia,Xie, Fei,&Zheng, Fei.(2015).Ocean dynamical processes associated with the tropical Pacific cold tongue mode.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,120(9),6419-6435.
MLA Li, Yang,et al."Ocean dynamical processes associated with the tropical Pacific cold tongue mode".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 120.9(2015):6419-6435.
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