Forcing of the Indian Ocean Dipole on the Interannual Variations of the Tropical Pacific Ocean: Roles of the Indonesian Throughflow
Forcing of the Indian Ocean Dipole on the Interannual Variations of the Tropical Pacific Ocean: Roles of the Indonesian Throughflow
复制标题
印度洋偶极子对热带太平洋年际变化的强迫：印度尼西亚通流的作用
DOI：
10.1175/2011jcli3649.1
复制
发表时间：
2011-07
影响因子：
4.9
通讯作者：
Yu, Yongqiang
中科院分区：
文献类型：
--
作者：
Yuan, Dongliang;Wang, Jing;Xu, Tengfei;Xu, Peng;Hui, Zhou;Zhao, Xia;Luan, Yihua;Zheng, Weipeng;Yu, Yongqiang
控制数值试验，使用海洋和海洋-大气耦合的环流模式表明，年际海平面下降在印度洋偶极子（IOD）事件期间，在印度洋东部的力量增强印度尼西亚的对流（ITF）输送温暖的水从上赤道太平洋印度洋。这种增强的输运导致赤道西太平洋温跃层升高和次表层温度异常，并传播到赤道东太平洋，引起热带太平洋海洋和大气环流的显著耦合演变。分析表明，IOD强迫的ITF输送异常与太平洋ENSO引起的ITF输送异常振幅相当。耦合模式的实验结果表明，由IOD引起的异常持续在赤道太平洋，直到IOD事件后的一年，这表明海洋通道在调制热带太平洋的年际气候变化的重要性，在时间滞后超过一年。
Controlled numerical experiments using ocean-only and ocean-atmosphere coupled general circulation models show that interannual sea level depression in the eastern Indian Ocean during the Indian Ocean dipole (IOD) events forces enhanced Indonesian Throughflow (ITF) to transport warm water from the upper-equatorial Pacific Ocean to the Indian Ocean. The enhanced transport produces elevation of the thermocline and cold subsurface temperature anomalies in the western equatorial Pacific Ocean, which propagate to the eastern equatorial Pacific to induce significant coupled evolution of the tropical Pacific oceanic and atmospheric circulation. Analyses suggest that the IOD-forced ITF transport anomalies are about the same amplitudes as those induced by the Pacific ENSO. Results of the coupled model experiments suggest that the anomalies induced by the IOD persist in the equatorial Pacific until the year following the IOD event, suggesting the importance of the oceanic channel in modulating the interannual climate variations of the tropical Pacific Ocean at the time lag beyond one year.
登录
查看更多内容
影响因子：
1.4
作者：
Yongqiang Yu;Xiying Liu
通讯作者：
Yongqiang Yu;Xiying Liu
影响因子：
--
作者：
J. Sprintall;A. Gordon;R. Murtugudde;R. Susanto
通讯作者：
J. Sprintall;A. Gordon;R. Murtugudde;R. Susanto
影响因子：
5.2
作者：
Gordon, AL;Susanto, RD;Ffield, A
通讯作者：
Ffield, A
影响因子：
--
作者：
M. Verschell;J. Kindle;J. O'Brien
通讯作者：
M. Verschell;J. Kindle;J. O'Brien
影响因子：
3.5
作者：
M. Spall;J. Pedlosky
通讯作者：
M. Spall;J. Pedlosky