Distribution of the tropical Pacific surface zonal wind anomaly and its relation with two types of El Nio
文献类型：CNKI期刊论文
| 作者 | Wang Y(汪洋); Chen JN(陈锦年); Wang HN(王宏娜) |
| 发表日期 | 2013-09-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | surface zonal wind anomaly CP(central Pacific) El Ni o rotated empirical orthogonal function rotated singular value decomposition zonal convergence physical process |
| 英文摘要 | El Nio events with an eastern Pacific pattern(EP) and central Pacific pattern(CP) were first separated using rotated empirical orthogonal functions(REOF).Lead/lag regression and rotated singular value decomposition(RSVD) analyses were then carried out to study the relation between the surface zonal wind(SZW) anomalies and sea surface temperature(SST) anomalies in the tropical Pacific.A possible physical process for the CP El Ni o was proposed.For the EP El Ni o,strong westerly anomalies that spread eastward continuously produce an anomalous ocean zonal convergence zone(ZCZ) centered on about 165°W.This SZW anomaly pattern favors poleward and eastward Sverdrup transport at the equator.For the CP El Nio,westerly anomalies and the ZCZ are mainly confined to the western Pacific,and easterly anomalies blow in the eastern Pacific.This SZW anomaly pattern restrains poleward and eastward Sverdrup transport at the equator;however,there is an eastward Sverdrup transport at about 5°N,which favors the warming of the north-eastern tropical Pacific.It is found that the slowness of eastward propagation of subsurface warm water(partly from the downwelling caused by Ekman convergence and the ZCZ) is due to the slowdown of the undercurrent in the central basin,and vertical advection in the central Pacific may be important in the formation and disappearance of the CP El Nio. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Natural Science Foundation of China(Nos.41076010,41206017) ; the National Basic Research Program of China(973 Program)(No.2012CB417402) |
| 卷 | v.31期:05页:205-220 |
| 语种 | 英文; |
| 分类号 | P425 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190743]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.InstituteofOceanology,ChineseAcademyofSciences 2.KeyLaboratoryofOceanCirculationandWaves,ChineseAcademyofSciences 3.UniversityofChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Wang Y,Chen JN,Wang HN. Distribution of the tropical Pacific surface zonal wind anomaly and its relation with two types of El Nio. 2013. |
入库方式： OAI收割
来源：海洋研究所
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