What is Ceiling balloon?
A '''ceiling balloon''' is used by [[meteorologist]]s to determine the height of the base of [[cloud]]s above ground level during daylight hours. The principle behind the ceiling balloon is a balloon with a known ascent rate (how fast it climbs) and determining how long the balloon rises until it disappears into the cloud. Ascent rates yield the ceiling height. {{Meteorological equipment}} {{weather-stub}} [[Category:Meteorology]]