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Why Was the Indian Ocean Dipole Weak in the Context of the Extreme El Nino in 2015?
Liu, Lin1,2; Yang, Guang1,2; Zhao, Xia3; Feng, Lin1,2; Han, Guoqing4; Wu, Yue1; Yu, Weidong1,2
2017-06-01
发表期刊JOURNAL OF CLIMATE
卷号30期号:12页码:4755-4761
文章类型Article
摘要The Indian Ocean witnessed a weak positive Indian Ocean dipole (IOD) event from the boreal summer to autumn in 2015, while an extreme El Nino occurred over the tropical Pacific. This was different from the case in 1997/98, when an extreme El Nino and the strongest IOD took place simultaneously. The analysis here suggests that the unique sea surface temperature anomaly (SSTA) pattern of El Nino in 2015 might have contributed to the weak IOD that year. El Nino in 2015 had a complex SSTA pattern, with positive warming over the central and eastern tropical Pacific. Such a combination of the classic El Nino (also known as cold-tongue El Nino) and the recently identified central Pacific El Nino (also known as El Nino Modoki II) had opposite remote influences on the tropical Indian Ocean. The classic El Nino reduced the strength of the Walker circulation over the tropical Indian Ocean, but this was offset by El Nino Modoki II. This study points out that the IOD can be strongly modulated by combined El Nino types in some circumstances, as in 2015.
DOI10.1175/JCLI-D-16-0281.1
收录类别SCI
语种英语
WOS记录号WOS:000402379600024
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文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/137100
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.State Ocean Adm, Inst Oceanog 1, Ctr Ocean & Climate Res, Qingdao, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
4.Nanjing Univ Informat Sci & Technol, Nanjing, Jiangsu, Peoples R China
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Liu, Lin,Yang, Guang,Zhao, Xia,et al. Why Was the Indian Ocean Dipole Weak in the Context of the Extreme El Nino in 2015?[J]. JOURNAL OF CLIMATE,2017,30(12):4755-4761.
APA Liu, Lin.,Yang, Guang.,Zhao, Xia.,Feng, Lin.,Han, Guoqing.,...&Yu, Weidong.(2017).Why Was the Indian Ocean Dipole Weak in the Context of the Extreme El Nino in 2015?.JOURNAL OF CLIMATE,30(12),4755-4761.
MLA Liu, Lin,et al."Why Was the Indian Ocean Dipole Weak in the Context of the Extreme El Nino in 2015?".JOURNAL OF CLIMATE 30.12(2017):4755-4761.
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