The model was integrated with all three components of velocity (u,v,w) initially set to zero, and with temperature and salinity specified by interpolating climatology data to each model grid point. The model year consists of 360 days (30 days per month), day 361 corresponds to 1 January. It was found that 90 days were sufficient for the model kinetic energy to reach quasi-steady state under the imposed conditions. In order to first capture the winter monsoon to summer monsoon transition, the model was started from 30 October, and run to 30 January next year for spin-up. After that day (30 January), the model was run another three years for each experiment. The monthly mean data are used for comparison.