Aviation Glossary - Inversion

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Inversion

An increase in temperature with height-a reversal of the normal decrease with height in the troposphere; may also be applied to other meteorological properties.

source: FAA Aviation Weather for Pilots (AC 00-6A)

State in which the canopy has been turned completely inside out.

source: FAA Parachute Rigger Handbook (FAA-H-8084-17)

(abbrev. INVRN) Generally, a departure from the usual increase or decrease in an atmospheric property with altitude. Specifically it almost always refers to a temperature inversion, i.e., an increase in temperature with height, or to the layer within which such an increase occurs. An inversion is present in the lower part of a cap.

source: NOAA National Weather Service Glossary

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