Fig. \ref{fig:heatBudgetCycle} shows the heat budget annual cycle for MRI-CGCM3 averaged over the ocean grids within 30\({}^{\circ}\)E–60\({}^{\circ}\) and 10\({}^{\circ}\)S–10\({}^{\circ}\)N as well as the corresponding historical\(-\)AMIP SST annual cycle difference. The mixed layer average temperature is approximated by SST when we estimate its tendency. Based on estimates of previous studies \citep{Schneider1996, deBoyer_2004MixedLayer}, a constant \(25m\) deep mixed layer is selected to estimate the heat storage change in the heat budget in this region. It can be seen from Fig. \ref{fig:heatBudgetCycle} that the sensible heat flux and the long wave radiation are much smaller in amplitude compared to other terms and the heat budget is balanced among heat storage tendency, latent heat flux, short wave radiation and ocean dynamics.