Entrainment (meteorology)

Entrainment is a phenomenon in the atmosphere that occurs when a turbulent flow captures a non-turbulent flow. It is typically used to refer to the capture of a wind flow with high moisture content or in the case of tropical cyclones, the capture of drier air.

Detrainment is the opposite effect, when the air from a convective cloud, usually at its top, is injected into the environment.

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