They conclude that there are at least three different cloud materials that contribute to the images : a thin haze layer, sulfuric acid clouds, and an unknown ultraviolet absorber below the sulfuric acid cloud layer.
12.
V . Ramanathan, director of the Center for Clouds, Chemistry and Climate at Scripps, said there was a brownish haze layer over the Indian Ocean almost 1, 000 miles ( 1, 600 kilometers ) off the coast.
13.
Since thunderstorms can be a hazard to aviation, pilots are advised to fly above any haze layers within regions of better visibility and to avoid flying under the anvil of these thunderstorms, which can be regions where hail falls from the parent thunderstorm.
14.
Condensation occurs at approximately 14, 2.5 and 0.1 mbar for ethane, acetylene and diacetylene, respectively . } } The concentration of hydrocarbons in the Uranian stratosphere is significantly lower than in the stratospheres of the other giant planets the upper atmosphere of Uranus is very clean and transparent above the haze layers.
