Fignre 4. Observed sea level along the equator from the TOPEX/Poseidon altimeter (left), simulated sea level along the equator (middle), and simulated sea level due just to wind-forced Kelvin waves along the equator (right). In each case a mean seasonal cycle based on 1993-96 has been removed. Temporal resolution is 10days for TOPEX/Poseidon, 5days for the simulation.