Figure 9.

Examples of wave packets defined by bright clouds, all in the Equatorial Zone. (a) A wave packet whose length is roughly equal to its width. Its constituent clouds are clearly higher than their surroundings, given the strong topographic clues from consistent shadowing on their eastern sides. (b) A line of regular clouds with longer, curved southwestern extensions. (c) A similar wave packet of white clouds with narrow wavefronts and a slight curvature. (d) A very curious type of irregular wave‐like feature, extracted from the northeastern portion of Figure PJ12_90a in the supporting information. The feature is reminiscent of ocean foam, with side‐by‐side elongated features that are not uniformly directed and may be higher than the surrounding cloud deck, with a consistent darkening on their eastern sides that might be shadowing.