Influences of Indian Ocean interannual variability on different stages of El Nio: A FOAM1.5 model approach
文献类型：期刊论文
| 作者 | Hong XiaoYuan1,2,4; Hu HaiBo2,5; Yang XiuQun2; Zhang Yuan3; Liu GuoQiang5; Liu Wei6
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| 刊名 | SCIENCE CHINA-EARTH SCIENCES
 |
| 出版日期 | 2014-11-01 |
| 卷号 | 57期号:11页码:2616-2627 |
| 关键词 | Indian Ocean Basin Mode Indian Dipole Mode El Nino Walker circulation anomalies |
| 通讯作者 | Hu, HB (reprint author), Nanjing Univ, Sch Atmospher Sci, Nanjing 210093, Jiangsu, Peoples R China. |
| 英文摘要 | Both the tropical Indian and tropical Pacific Oceans are active atmosphere-ocean interactive regions with robust interannual variability, which also constitutes a linkage between the two basins in the mode of variability. Using a global atmosphere-ocean coupled model, we conducted two experiments (CTRL and PC) to explore the contributions of Indian Ocean interannual sea surface temperature (SST) modes to the occurrence of El Nio events. The results show that interannual variability of the SST in the Indian Ocean induces a rapid growth of El Nio events during the boreal autumn in an El Nio developing year. However, it weakens El Nio events or even promotes cold phase conversions in an El Nio decaying year. Therefore, the entire period of the El Nio is shortened by the interannual variations of the Indian Ocean SST. Specifically, during the El Nio developing years, the positive Indian Ocean Dipole (IOD) events force an anomalous Walker circulation, which then enhances the existing westerly wind anomalies over the west Pacific. This will cause a warmer El Nio event, with some modulations by ocean advection and oceanic Rossby and Kelvin waves. However, with the onset of the South Asian monsoon, the Indian Ocean Basin (IOB) warming SST anomalies excite low level easterly wind anomalies over the west tropical Pacific during the El Nio decaying years. As a result, the El Nio event is prompted to change from a warm phase to a cold phase. At the same time, an associated atmospheric anticyclone anomaly appears and leads to a decreasing precipitation anomaly over the northwest Pacific. In summary, with remote forcing in the atmospheric circulation, the IOD mode usually affects the El Nio during the developing years, whereas the IOB mode affects the El Nio during the decaying years. |
| 学科主题 | Geology |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000344784400005 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/23934]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 海洋研究所_实验海洋生物学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Nanjing Univ, Sch Atmospher Sci, Nanjing 210093, Jiangsu, Peoples R China 3.Nanjing Univ Informat Sci & Technol, Sch Marine Sci, Nanjing 210044, Jiangsu, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Canada Bedford Inst Oceanog, Dartmouth, NS B2Y 4A2, Canada 6.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA |
| 推荐引用方式 GB/T 7714 | Hong XiaoYuan,Hu HaiBo,Yang XiuQun,et al. Influences of Indian Ocean interannual variability on different stages of El Nio: A FOAM1.5 model approach[J]. SCIENCE CHINA-EARTH SCIENCES,2014,57(11):2616-2627. |
| APA | Hong XiaoYuan,Hu HaiBo,Yang XiuQun,Zhang Yuan,Liu GuoQiang,&Liu Wei.(2014).Influences of Indian Ocean interannual variability on different stages of El Nio: A FOAM1.5 model approach.SCIENCE CHINA-EARTH SCIENCES,57(11),2616-2627. |
| MLA | Hong XiaoYuan,et al."Influences of Indian Ocean interannual variability on different stages of El Nio: A FOAM1.5 model approach".SCIENCE CHINA-EARTH SCIENCES 57.11(2014):2616-2627. |
入库方式： OAI收割
来源：海洋研究所
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