Fig. 10
From: Ultraviolet imager on Venus orbiter Akatsuki and its initial results
Horizontal velocities derived from three 365-nm images on the day of Akatsuki’s Venus orbit insertion (7 December 2015). Arrows show their deviation from the uniform westward wind of 95 m/s. The length scale of the arrows is shown in m/s near the lower-right corner. Grayscale shading shows the high-passed radiance (W/m2/sr/m) at the beginning of cloud tracking