Sounding Balloon


Also found in: Dictionary, Wikipedia.
Related to Sounding Balloon: weather balloon

sounding balloon

[′sau̇nd·iŋ bə‚lün]
(engineering)
A small free balloon used for carrying radiosonde equipment aloft.

Sounding Balloon

 

a rubber, usually hydrogen-filled balloon carrying a meteorograph and released in free flight to measure atmospheric parameters. The balloon bursts when it reaches a certain altitude, and the meteorograph descends to earth by parachute with a tape recording that is subsequently processed. With the introduction of radiosondes, the use of sounding balloons was virtually discontinued.