A study of the relationship between the basin wide phenomena in the Pacific and the Indian Ocean at interannual time scales, focusing on the role of the Warm Water Pool variability.

利用4维变分数据同化技术（4DVAR）的成果和观测记录，探讨了沿海上升流对暖池海表温度变化的影响。研究发现，沿海海温的变化对厄尔尼诺-南方涛动（ENSO）或印度洋偶极子模态（IOD）等年际时间尺度的大尺度现象具有重要影响，因为局地海气耦合过程可以作为触发因素发挥作用，例如沿海上升流与由此产生的大气对流调整之间的关系。

We attempted to evaluate the role of the coastal upwelling for the change of the sea surface temperature (SST) in Warm Water Pool, by using the products of the 4 dimensional variational data assimilation technique (4DVAR) and the observation records. We found that the change of the SST in the coastal areas could play a significant role for the large scale phenomena such as El Nino Southern Oscillation (ENSO) or the Indian Ocean Dipole Mode (IOD) at interannual time scales, as the local air-sea coupling processes can have an effect as a trigger, e.g., the relationship between the coastal upwelling and the resultant atmospheric convective adjustment.