Comparison of the positive and negative Indian Ocean Dipole forcing on the Pacific interannual variability through the oceanic channel,
Comparison of the positive and negative Indian Ocean Dipole forcing on the Pacific interannual variability through the oceanic channel,
复制标题
印度洋偶极子强迫通过海洋通道对太平洋年际变化的正负比较，
DOI：
10.1007/s10872-021-00611-8
复制
发表时间：
2021
影响因子：
2.3
通讯作者：
Xia Zhao
中科院分区：
文献类型：
--
作者：
jing wang;DONG LIANG YUAN;Xia Zhao
使用区域海洋-大气耦合环流模式的数值试验表明，印度洋偶极子（IOD）事件的影响，太平洋通过海洋通道被称为印度尼西亚对流（ITF）隔离大气桥的作用。2019年正IOD和2016年负IOD事件可以迫使通过地下过程增强和减少ITF传输。海流和海平面异常允许对2016年和2019年IOD事件进行全面比较。上升流和下降流Kelvin波可沿沿着苏门答腊-爪哇岛链在印度尼西亚海域传播，迫使东南海盆的SSHA迅速增长并到达西太平洋。数值结果表明，2016年的负IOD可能会导致类似厄尔尼诺的状态，2019年的正IOD可能会导致太平洋出现类似拉尼娜的状态。
Numerical experiments using a regional ocean–atmosphere coupled general circulation model show the influence of Indian Ocean Dipole (IOD) events on the Pacific Ocean through the oceanic channel known as the Indonesian Throughflow (ITF) by isolating the role of the atmospheric bridge. The 2019 Positive IOD and 2016 Negative IOD events can force enhanced and decreased ITF transport through subsurface processes. Currents and sea level anomalies allowed a thorough comparison between 2016 and 2019 IOD events. The upwelling and downwelling Kelvin waves can propagate through the Indonesian seas along the Sumatra–Java island chain, forcing SSHA in the southeastern basin to grow quickly and reach the western Pacific Ocean. The numerical results suggest that the 2016 negative IOD could cause an El Niño-like state and that the 2019 positive IOD could cause a La Niña-like state in the Pacific Ocean.