Ceiling Balloon

A ceiling balloon is a small, usually red, rubber balloon commonly measuring 76 mm (3 in) across prior to inflation. After inflation the balloon is taken outside and released.

Ceiling Balloon A small balloon used to determine the height of the cloud base. The height is computed from the balloon's ascent rate and the time required for its disappearance into the cloud.

ceiling balloon—A small balloon used to determine the height of a cloud base or the extent of vertical visibility.

Radiosonde balloon A balloon used to carry a radiosonde aloft, considerably larger than pilot balloons or ceiling balloons.

It used to track the movements of either a ceiling balloon or a radiosonde.ThermalA relatively small-scale, rising air current produced when the Earth's surface is heated. Thermals are a common source of low level turbulence for aircraft.

Balloon Ceiling: The height of the base of the clouds observed and measured with a weather balloon or ceiling balloon. Baroclinic Atmosphere:Isotherms move across the isobars or contours.

VERTICAL VISIBILITY The distance an observer can see vertically into an undefined ceiling, or the height corresponding to the top of a ceiling light projector beam, or the height at which a ceiling balloon disappears during the presence of an ...

An instrument used in surveying to measure horizontal and vertical angles with a small telescope that can move in the horizontal and vertical planes. It used to track the movements of either a ceiling balloon or a radiosonde. Thermal ...

See also: Meteor, Ceiling, Pressure, Light, Atmosphere