Abstract
The Pacific and Indian Oceans are closely linked to each other through atmospheric circulation and oceanic throughflow. Climate variations in one ocean basin often interact with those in the other basin. This includes phenomena such as the El Nino-Southern Oscillation (ENSO), biennial monsoon variability, and the Indian Ocean zonal/dipole mode. Increasing evidence suggests that these interbasin interactions and feedbacks are crucial in determining the period, evolution, and pattern of ENSO and its decadal variability. This article reviews recent efforts in using a series of basin-coupling CGCM (coupled atmosphere-ocean general circulation model) experiments to under- stand the physical processes through which ENSO interacts with the Indian Ocean and monsoon, the impacts of interbasin interactions on the characteristics of ENSO, the relative roles of the Pacific and Indian Oceans in monsoon variability, and ENSO's role in the Indian Ocean zonal/dipole mode.
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