Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-017-3710-1 |
Role of the meridional dipole of SSTA and associated cross-equatorial flow in the tropical eastern Pacific in terminating the 2014 El Nino development | |
Wu, Yi-Kai1,2; Chen, Lin3,4,5; Hong, Chi-Cherng2; Li, Tim3,4,5; Chen, Cheng-Ta1; Wang, Lu3,4,5 | |
2018-03-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 50页码:1625-1638 |
文章类型 | Article |
语种 | 英语 |
国家 | Taiwan; USA; Peoples R China |
英文摘要 | In the boreal spring of 2014, the oceanic and atmospheric conditions were favorable for an El Nio's development. It was predicted that in 2014, a super El Nio or at least a regular El Nio with normal magnitude, would initiate. However, the growth rate of the sea surface temperature anomaly (SSTA) in the equatorial eastern Pacific suddenly declined in the boreal summer. The physical processes responsible for the termination of the 2014 El Nio were addressed in this study. We hypothesized that a meridional dipole of SSTA, characterized by a pronounced warm SSTA over the eastern North Pacific (ENP) and cold SSTA over the eastern South Pacific (ESP), played a crucial role in blocking the 2014 El Nio's development. The observational analysis revealed that the meridional dipole of SSTA and the relevant anomalous cross-equatorial flow in the tropical eastern Pacific, induced anomalous westward () and upwelling () currents in the equatorial eastern Pacific, leading to negative anomalous zonal advection term () and anomalous upwelling advection term (). Additionally, the anomalous cross-equatorial flow also induced northward meridional current anomalies that transported subtropical cold water to the equator. All the changes of the oceanic dynamic terms collectively caused negative SSTA tendency in the boreal summer, and thus killed off the budding 2014 El Nio. The idealized numerical experiments further confirmed that the 2014 El Nio's development could be suppressed by the meridional dipole of SSTA, and both the ENP pole and ESP pole make a contribution. |
英文关键词 | ENSO 2014-2015 El Nino Meridional dipole of SSTA in eastern Pacific Cross-equatorial flow Ocean-atmosphere interaction |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426707100009 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; SEASONAL FOOTPRINTING MECHANISM ; WESTERLY WIND EVENTS ; INDIAN-OCEAN DIPOLE ; SOUTHERN-OSCILLATION ; INTERANNUAL VARIATION ; VICTORIA MODE ; BOREAL SUMMER ; SYSTEM MODEL ; ENSO |
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/36304 |
专题 | 气候变化 |
作者单位 | 1.Natl Taiwan Normal Univ, Dept Earth Sci, Taipei, Taiwan; 2.Univ Taipei, Dept Earth & Life Sci, Taipei, Taiwan; 3.Univ Hawaii Manoa, SOEST, IPRC, Honolulu, HI 96822 USA; 4.Univ Hawaii Manoa, SOEST, Dept Atmospher Sci, Honolulu, HI 96822 USA; 5.Nanjing Univ Informat Sci & Technol, Joint Int Res Lab Climate & Environm Change, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Key Lab Meteorol Disaster,Minist Educ, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Wu, Yi-Kai,Chen, Lin,Hong, Chi-Cherng,et al. Role of the meridional dipole of SSTA and associated cross-equatorial flow in the tropical eastern Pacific in terminating the 2014 El Nino development[J]. CLIMATE DYNAMICS,2018,50:1625-1638. |
APA | Wu, Yi-Kai,Chen, Lin,Hong, Chi-Cherng,Li, Tim,Chen, Cheng-Ta,&Wang, Lu.(2018).Role of the meridional dipole of SSTA and associated cross-equatorial flow in the tropical eastern Pacific in terminating the 2014 El Nino development.CLIMATE DYNAMICS,50,1625-1638. |
MLA | Wu, Yi-Kai,et al."Role of the meridional dipole of SSTA and associated cross-equatorial flow in the tropical eastern Pacific in terminating the 2014 El Nino development".CLIMATE DYNAMICS 50(2018):1625-1638. |
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