image 24-September-2018 18:07:01

Tracking clouds on Venus

Date: 18 June 2013
Satellite: Venus Express
Copyright: Fig. 3 from Khatuntsev et al., Cloud level winds from the Venus Express Monitoring Camera imaging, Icarus (2013); doi: 10.1016/j.icarus.2013.05.018 (Used with permission)

Examples of cloud features identified in Venus Express images and used to monitor wind speeds. Long-term studies based on tracking the motions of several hundred thousand cloud features, indicated here with arrows and ovals, reveal that the average wind speeds on Venus have increased from roughly 300 km/h to 400 km/h over the first six years of the mission. Daily and yearly variations, as well as unexplained differences between consecutive orbits of the spacecraft, were also identified. These images were taken on 27 October 2008. The arrows and ovals are coloured to improve contrast against their respective backgrounds.

Last Update: 18 June 2013

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