What is the temperature of Uranus?
Climate of Uranus
The tracking of numerous cloud features allowed determination of zonal winds blowing in the upper troposphere of Uranus.[1] At the equator winds are retrograde, which means that they blow in the reverse direction to the planetary rotation. Their speeds are from −100 to −50m/s.[1][8] Wind speeds increase with the distance from the equator, reaching zero values near ±20° latitude, where the troposphere's temperature minimum is located.[1][14] Closer to the poles, the winds shift to a prograde direction, flowing with its rotation. Wind speeds continue to increase reaching maxima at ±60° latitude before falling to zero at the poles.[1] Wind speeds at −40° latitude range from 150 to 200m/s. Because the collar obscures all clouds below that parallel, speeds between it and the south pole are impossible to measure.[1] In contrast, in the northern hemisphere maximum speeds as high as 240m/s are observed near +50 degrees of latitude.[1][8] These speeds sometimes lead to incorrect assertions that winds are faster in the northern hemisphere. In fact, latitude per latitude, winds are slightly slower in the northern part of Uranus, especially at the midlatitudes from ±20 to ±40 degrees.[1] There is currently no agreement about whether any changes in wind speed have occurred since 1986,[1][8][15] and nothing is known about much slower meridional winds.[1]