Venus is well known for super rotating atmosphere, which whips around the planets once every four Earth days.The speedy winds of Venus have steadily been getting faster over the last six years.By tracking the movements of distinct cloud features in the cloud tops of some 70 km above the planet surface over a period of 6 Earth years. Scientists are monitoring patterns in the long-term global wind speeds.
When Venus absorbed in 2006, average cloud-top wind speeds between latitudes 50 degree with roughly 300 km/h. Now the winds are becoming even faster, increasing to 400 km/h.
Dr Khatuntsev’s team determined the wind speeds by measuring how cloud features in images moved between frames: over 45 000 features were very carefully tracked by hand and more than 350 000 further features were tracked automatically using a computer programme.