Figure 4

Evolution of the secondary wave above Brazil during day 1. The difference between the vertical wind at 2 km altitude of the perturbed run minus the control run is shown at (a) 16:00 UT, (b) 17:00 UT, (c) 19:00 UT, (d) 23:00 UT.
Evolution of the secondary wave above Brazil during day 1. The difference between the vertical wind at 2 km altitude of the perturbed run minus the control run is shown at (a) 16:00 UT, (b) 17:00 UT, (c) 19:00 UT, (d) 23:00 UT.