Definition of Pilot balloon observation

1. Noun. (meteorology) A method of winds-aloft observation, temperature, and relative humidity of the upper that is, the determination of wind speeds and air and to automatically transmit that directions in the atmosphere above a station. This is done by reading the elevation and azimuth angles of a theodolite (instrument) observation while visually tracking a pilot balloon. The ascension rate of the balloon is approximately determined by careful inflation to a given total lift. After release from the ground, periodic readings (usually at one-minute intervals) of elevation and azimuth angles of the balloon are recorded. These data are transferred to a winds-aloft plotting board, and wind speed and direction at selected levels are calculated by trigonometric methods. ¹

¹ Source: wiktionary.com

Lexicographical Neighbors of Pilot Balloon Observation

pilon fracture
pilonidal
pilonidal cyst
pilonidal fistula
pilonidal sinus
pilose
pilosebaceous
pilosebaceous unit
pilosebaceous units
pilosis
pilosities
pilosity
pilot
pilot-hole
pilot balloon
pilot balloon observation (current term)
pilot biscuit
pilot bit
pilot blacksnake
pilot boat
pilot bread
pilot burner
pilot chart
pilot cloth
pilot engine
pilot experiment
pilot film
pilot fish
pilot hole
pilot ladder

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