| The Shallow Meridional Overturning Circulation in the Northern Indian Ocean and Its Interannual Variability |
| |
| 作者姓名： | HU Ruijin LIU Qinyu WANG Qi J. Stuart GODFREY MENG Xiangfeng |
| |
| 作者单位： | Physical Oceanography Laboratory & Ocean-Atmosphere Interaction and Climate Laboratory Ocean University of China，Qingdao 266003，Physical Oceanography Laboratory & Ocean-Atmosphere Interaction and Climate Laboratory Ocean University of China，Qingdao 266003，Physical Oceanography Laboratory & Ocean-Atmosphere Interaction and Climate Laboratory Ocean University of China，Qingdao 266003，CSIRO Division of Marine Research，GPO Box 1538，Hobart，Tasmania，Australia，Physical Oceanography Laboratory & Ocean-Atmosphere Interaction and Climate Laboratory Ocean University of China Qingdao 266003 |
| |
| 摘 要： | The shallow meridional overturning circulation (upper 1000 m) in the northern Indian Ocean and its interannual variability are studied, based on a global ocean circulation model (MOM2) with an integration of 10 years (1987-1996). It is shown that the shallow meridional overturning circulation has a prominent seasonal reversal characteristic. In winter, the flow is northward in the upper layer and returns southward at great depth. In summer, the deep northward inflow upwells north of the equator and returns southward in the Ekman layer. In the annual mean, the northward inflow returns through two branches: one is a southward flow in the Ekman layer, the other is a flow that sinks near 10°N and returns southward between 500 m and 1000 m. There is significant interannual variability in the shallow meridional overturning circulation, with a stronger (weaker) one in 1989 (1991) and with a period of about four years. The interannual variability of the shallow meridional overturning circulation is intimately r
|
| 关 键 词： | 北印度洋 年度变化 子午线 倾覆循环 |
| 收稿时间： | 24 April 2007 |
The shallow meridional overturning circulation in the northern Indian Ocean and its interannual variability |
| |
| HU Ruijin,LIU Qinyu,WANG Qi,J. Stuart GODFREY,MENG Xiangfeng.The Shallow Meridional Overturning Circulation in the Northern Indian Ocean and Its Interannual Variability[J].Advances in Atmospheric Sciences,2005,22(2):220-229. |
| |
| Authors: | Hu Ruijin Liu Qinyu Wang Qi J Stuart Godfrey Meng Xiangfeng |
| |
| Institution: | Physical Oceanography Laboratory & Ocean-Atmosphere Interaction and Climate Laboratory; Ocean University of China; Qingdao 266003,Physical Oceanography Laboratory & Ocean-Atmosphere Interaction and Climate Laboratory; Ocean University of China; Qingdao 266003,Physical Oceanography Laboratory & Ocean-Atmosphere Interaction and Climate Laboratory; Ocean University of China; Qingdao 266003,CSIRO; Division of Marine Research; GPO Box 1538; Hobart; Tasmania; Australia,Physical Oceanography Laboratory & Ocean-Atmosphere Interaction and Climate Laboratory; Ocean University of China; Qingdao 266005 |
| |
| Abstract: | The shallow meridional overturning circulation (upper 1000 m) in the northern Indian Ocean and its interannual variability are studied, based on a global ocean circulation model (MOM2) with an integration of 10 years (1987-1996). It is shown that the shallow meridional overturning circulation has a prominent seasonal reversal characteristic. In winter, the flow is northward in the upper layer and returns southward at great depth. In summer, the deep northward inflow upwells north of the equator and returns southward in the Ekman layer. In the annual mean, the northward inflow returns through two branches: one is a southward flow in the Ekman layer, the other is a flow that sinks near 10°N and returns southward between 500 m and 1000 m. There is significant interannual variability in the shallow meridional overturning circulation, with a stronger (weaker) one in 1989 (1991) and with a period of about four years. The interannual variability of the shallow meridional overturning circulation is intimately related to that of the surface wind stress. Several indices are proposed to describe the anomaly of this circulation associated with the cross-equatorial part. |
| |
| Keywords: | meridional overturning circulation northern Indian Ocean interannual variability wind stress circulation index |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《大气科学进展》浏览原始摘要信息 |
| 点击此处可从《大气科学进展》下载免费的PDF全文 |
