Dynamical responses of the west Pacific North Equatorial Countercurrent (NECC) system to El Nino events
文献类型：期刊论文
| 作者 | Zhao, Jun1,2 ; Li, Yuanlong1,3; Wang, Fan1; Wang, F
|
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
 |
| 出版日期 | 2013-06-01 |
| 卷号 | 118期号:6页码:2828-2844 |
| 关键词 | North Equatorial Countercurrent West Pacific El Nino Mindanao Dome ocean waves |
| ISSN号 | 2169-9275 |
| 通讯作者 | Wang, F |
| 中文摘要 | Analysis of data sets based on satellite measurements during 1992-2011 reveals pronounced interannual-to-decadal variations of the west Pacific North Equatorial Countercurrent (NECC) system, involving the intensity (INT), position (Y-CM), and path length (L-CM) of the surface NECC jet, together with the associated recirculation gyres and mesoscale eddies. During the 1997-1998 and 2009-2010 El Nino events, the NECC jet showed increased INT before, and decreased INT, northerly position, and lengthened path after the mature phase. During the 1993-1995 and 2002-2005 central Pacific warming events, it also showed increased INT but no evident changes in Y-CM and L-CM. The varied responses caused the different natures of individual El Nino events. In 1998 and 2010, reflected upwelling Kelvin waves south of the NECC jet, together with the downwelling Rossby waves north of it induced by the following strong La Nina events, weakened the NECC jet through geostrophy and shifted it northward. This process was however absent during the 1993-1995 and 2002-2005 events. Intensified NECC jet during warm conditions gives rise to anomalously active mesoscale eddies, which also contribute to the unstable states of the NECC system in 1998 and 2010. Hindcast with a linear Rossby wave model reveals a slow change of the western Pacific NECC system during the past 50 years. Since 1990s, low-frequency variance of the NECC system has been dominated by quasi-decadal signals and more closely associated with wind forcing in the western Pacific Ocean, which corresponds to the slow changes of the El Nino/Southern Oscillation (ENSO)-related wind forcing pattern. |
| 英文摘要 | Analysis of data sets based on satellite measurements during 1992-2011 reveals pronounced interannual-to-decadal variations of the west Pacific North Equatorial Countercurrent (NECC) system, involving the intensity (INT), position (Y-CM), and path length (L-CM) of the surface NECC jet, together with the associated recirculation gyres and mesoscale eddies. During the 1997-1998 and 2009-2010 El Nino events, the NECC jet showed increased INT before, and decreased INT, northerly position, and lengthened path after the mature phase. During the 1993-1995 and 2002-2005 central Pacific warming events, it also showed increased INT but no evident changes in Y-CM and L-CM. The varied responses caused the different natures of individual El Nino events. In 1998 and 2010, reflected upwelling Kelvin waves south of the NECC jet, together with the downwelling Rossby waves north of it induced by the following strong La Nina events, weakened the NECC jet through geostrophy and shifted it northward. This process was however absent during the 1993-1995 and 2002-2005 events. Intensified NECC jet during warm conditions gives rise to anomalously active mesoscale eddies, which also contribute to the unstable states of the NECC system in 1998 and 2010. Hindcast with a linear Rossby wave model reveals a slow change of the western Pacific NECC system during the past 50 years. Since 1990s, low-frequency variance of the NECC system has been dominated by quasi-decadal signals and more closely associated with wind forcing in the western Pacific Ocean, which corresponds to the slow changes of the El Nino/Southern Oscillation (ENSO)-related wind forcing pattern. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Oceanography |
| 类目[WOS] | Oceanography |
| 研究领域[WOS] | Oceanography |
| 关键词[WOS] | EASTERN TROPICAL PACIFIC ; LARGE-SCALE CURRENTS ; INTERANNUAL VARIABILITY ; SURFACE CURRENTS ; MINDANAO CURRENT ; PHILIPPINE SEA ; INDONESIAN THROUGHFLOW ; SEASONAL VARIABILITY ; DECADAL VARIABILITY ; BOUNDARY CURRENTS |
| 收录类别 | SCI |
| 原文出处 | 10.1002/jgrc.20196 |
| 语种 | 英语 |
| WOS记录号 | WOS:000324885500006 |
| 公开日期 | 2014-07-17 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/16403]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 通讯作者 | Wang, F |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA |
| 推荐引用方式 GB/T 7714 | Zhao, Jun,Li, Yuanlong,Wang, Fan,et al. Dynamical responses of the west Pacific North Equatorial Countercurrent (NECC) system to El Nino events[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2013,118(6):2828-2844. |
| APA | Zhao, Jun,Li, Yuanlong,Wang, Fan,&Wang, F.(2013).Dynamical responses of the west Pacific North Equatorial Countercurrent (NECC) system to El Nino events.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,118(6),2828-2844. |
| MLA | Zhao, Jun,et al."Dynamical responses of the west Pacific North Equatorial Countercurrent (NECC) system to El Nino events".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 118.6(2013):2828-2844. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。