Effects of Indo-Pacific throughflow on the upper tropical Pacific and Indian Oceans
Effects of Indo-Pacific throughflow on the upper tropical Pacific and Indian Oceans
复制标题
DOI：
10.1029/95jc02075
复制
发表时间：
1995-09
影响因子：
--
通讯作者：
M. Verschell;J. Kindle;J. O'Brien
中科院分区：
文献类型：
--
作者：
M. Verschell;J. Kindle;J. O'Brien
利用简化的全球重力模式研究了印度尼西亚群岛（PACIO）太平洋和印度洋之间的连接对热带太平洋和印度洋上层的动力学和影响。使用两种不同的模型几何形状;第一种具有允许正常运输的开放PACIO区域（开放情况），第二种具有不允许运输的封闭PACIO区域（封闭情况）。该模型是被迫每月1980年至1989年欧洲中期天气预报中心风应力或强加的Rossby波脉冲。由于PACIO输送的影响，印度洋的平均上层厚度明显更大，变化更大。在太平洋的影响要小得多，似乎没有明显的影响PACIO输送年际变化在热带太平洋东部。开放和封闭情况之间的RMS差异表明，在南印度洋的大部分地区，印度洋的西部边界，棉兰老涡旋区域和赤道太平洋波导东部的低频（>半年）变化。高频变化显著的区域是东非沿岸流、棉兰老涡旋区、珊瑚海海盆和赤道东太平洋波导。对南印度洋的巨大影响与通过PACIO区域的运输产生的离赤道Rossby波有关。
The dynamics and influence of the connection between the Pacific and Indian Oceans in the Indonesian Archipelago (PACIO) on the upper tropical Pacific and Indian Oceans are investigated using a reduced gravity global model. Two different model geometries are used; the first has an open PACIO region (open case) that permits normal transport, the second has a closed PACIO region (closed case) that allows no transport. The model is forced by either monthly 1980–1989 European Centre for Medium-Range Weather Forecasting wind stresses or by an imposed Rossby wave pulse. The average upper layer thickness of the Indian Ocean is significantly greater and more variable because of the influence of PACIO transport. The effect in the Pacific Ocean is much smaller, and there appears to be no appreciable effect of PACIO transport on interannual variability in the eastern tropical Pacific Ocean. RMS differences between the open and closed cases show areas of low-frequency (> ½ year) variability over most of the southern Indian Ocean, the western boundary of the Indian Ocean, the region of the Mindanao Eddy, and the eastern equatorial Pacific waveguide. Areas of significant high-frequency variability are the East African Coastal Current, the Mindanao Eddy region, the Coral Sea Basin, and in the eastern equatorial Pacific waveguide. The large effect on the southern Indian Ocean is linked to off-equatorial Rossby waves generated by transport through the PACIO region.