11:00 AM - 11:15 AM
[ACG38-08] The Indo-Pacific cross-basin interaction of the decadal climate variability under the progress of the global warming
Keywords:Air-sea interaction, cross-basin interaction, Decadal variability
While several observational studies indicated that the simultaneous correlation coefficient of the long-term SST variability over the two basins changed from positive before 1985 into negative after 1985, our analysis always shows the positive correlation regardless of the selected decades, indicating that the internal dynamics of the Indo-Pacific ocean-atmosphere system for this cross-basin interaction. While the decadal variations of the surface winds over the Indian Ocean are influenced by the SST variability over the tropical Pacific, the SST formation processes by those surface winds are different among the regions north and south of 10°S, respectively. The effect of the climatological meridional gradient in the thermocline depth on the different formation processes is discussed.