Vertical velocity, as a function of pressure, for the “shallow”, “deep” and “full” cases (see Table 1 for explanation) as the top, middle and bottom panels respectively. The left and right panels show vertical velocity as a function of longitude where a meridional average (performed in a point-wise fashion, i.e. ^∫ vdφ as opposed to ^∫ cosφvdφ, to emphasise differences in the vertical flow towards the polar regions) has been performed, and of latitude where a zonal average has been performed, respectively.