Fig. 2
Morphology of the observed and the simulated planetary-scale streak structures. a Edge-enhanced image of Venus’ night-side obtained from the image in Fig. 1; see Methods for the edge-emphasis process. b Vertical velocity at an altitude of 60 km simulated in STD after 3 Earth years (about 9.38 Venusian solar days) of time-integration, shown as a satellite view mimicking the panel a. c, d Same as b but for orthographic views from the south pole and the north pole, respectively, at the same altitude. e Same as b but for meridional cross-section at lon = 60 deg.; horizontal dotted lines indicate 50 and 60 km heights, which are the approximate boundaries of the simulated low-stability layer. Note that the planetary-rotation direction in the simulation is opposite to that of Venus, but the panel b is displayed with a 180-deg. rotation to easily be compared with the Venus image shown in the panel a. The colour bar is common for the panels from b to e
