Ceiling balloon

A ceiling balloon is used by meteorologists to determine the height of the base of clouds 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.

Ceiling Balloon Media

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  A fully inflated ceiling balloon

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  Ceilingballooncabinet

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  Close up of the filler stand

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  Regulator valve and pressure gauges attached to helium cylinder