Why does the IOD-ENSO teleconnection disappear in some decades?
文献类型：CNKI期刊论文
| 作者 | Xu TF(徐腾飞); Yuan DL(袁东亮)
|
| 发表日期 | 2015-03-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | Indian Ocean Dipole(IOD) El Nio-Southern Oscillation(ENSO) oceanic channel teleconnection |
| 英文摘要 | Lag correlations between sea surface temperature anomalies(SSTA) in the southeastern tropical Indian Ocean(STIO) in fall and Nio 3.4 SSTA in the eastern equatorial Pacific in the following fall are subjected to decadal variation,with positive correlations during some decades and negative correlations during others. Negative correlations are smaller and of shorter duration than positive correlations. Variations in lag correlations suggest that the use of the Indian Ocean Dipole(IOD) as a predictor of the El Nio Southern Oscillation(ENSO) at a lead time of one year is not effective during some decades. In this study,lag correlations between IOD and ENSO anomalies were analyzed to investigate why the IOD-ENSO teleconnection disappears during decades with negative correlations. Anomalies induced by the IOD in the equatorial Pacific Ocean during decades with negative correlations are still present,but at a greater depth than in decades with positive correlations,resulting in a lack of response to oceanic channel dynamics in the cold tongue SSTA. Lag correlations between oceanic anomalies in the west Pacific warm pool in fall and the equatorial Pacific cold tongue with a one-year time lag are significantly positive during decades with negative correlations. These results suggest that oceanic channel dynamics are overwhelmed by oceanatmosphere coupling over the equatorial Pacific Ocean during decades with negative correlations. Therefore,the Indonesian throughflow is not effective as a link between IOD signals and the equatorial Pacific ENSO. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Basic Research Program of China(973 Program)(Nos.2012CB956000,2011CB403502) ; the National Natural Science Foundation of China(No.41176019) ; the China Meteorological Administration(No.GYHY201306018) ; the Strategic Priority Program of Chinese Academy of Sciences(No.XDA11010301) |
| 卷 | v.33期:02页:246-256 |
| 语种 | 英文; |
| 分类号 | P732 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190093]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.UniversityofChineseAcademyofSciences 2.QingdaoCollaborativeInnovationCenterofMarineScienceandTechnology 3.InstituteofOceanology,ChineseAcademyofSciences 4.FirstInstituteofOceanography,StateOceanicAdministration |
| 推荐引用方式 GB/T 7714 | Xu TF,Yuan DL. Why does the IOD-ENSO teleconnection disappear in some decades?. 2015. |
入库方式： OAI收割
来源：海洋研究所
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