«Massive storm pulls water and ammonia ices from Saturn's depths.» (sciencedaily.com)
Ammonia ice by itself would evaporate on Ceres today, because the dwarf planet is too warm. (astrobio.net)
The rising zones, meanwhile, soar high into the atmosphere, and contain clouds of ammonia ice crystals that reflect sunlight, and block the view of the darker layers below, just like clouds here on Earth. (coolcosmos.ipac.caltech.edu)