In view of the obvious importance of signals coming off the eastern boundary (plots 1.5 above), a different strategy was taken. Lacking an obvious way to simulate the signals along the eastern boundary from the winds, these runs use the ACOM3 eastern boundary fluctuations as a boundary condition. However, there is no way to extend this boundary condition back in time before the beginning of the model run. Therefore the next set of plots shows the Rossby model with both the eastern boundary condition and an initial condition (Oct 1992) from the ACOM results. No FSU winds were needed, as the RW model run began in Oct 1992. The plots show, separately and combined, the three contributions to the resulting Rossby model: from the interior winds, from the eastern boundary radiated westward at the Rossby speed c_r, and from Oct 1992 radiated forward at c_r. Various choices of c and damping timescale are shown. The best agreement (quantitative check to come soon) appears to be with 48-month damping and c=3.0 m/s).
A 4 m2/yr trend was removed from the boundary and initial conditions and from the ACOM3 fields shown as comparison (see plots 1.4 above). All quantities are interannual anomalies as defined above.
(x,t) sections. Note, these plots are very wide (5 panels side-by-side).
