4:40 PM - 4:55 PM
[ACG32-08] Interannual variability of SEC bifurcation and western boundary currents along the Madagascar and the relation with ENSO
Keywords:Indian Ocean, South Equatorial Current, western boundary current, Island Rule, ENSO
The SBL, NEMC, and SEMC have correlation with Niňo 3.4 index with 5-15 month lags, and the wind stress curl fields around 80oE-110oE, 20oS-10oS have positive correlation with the Niňo 3.4 index from the late 1990s to the 2000s. From an analysis of AGCM sensitivity experiment, the wind stress curl anomalies around 60oE-90oE, 25oS-15oS may be because of the Matsuno-Gill response to diabatic heating anomalies in the western Pacific, whereas those around 80oE-110oE, 20oS-10oS may be due to the sea surface temperature anomalies off the west coast of the Australia that tend to appear during ENSO events.