Stack effect

Stack Effect: Flow of air resulting from warm air rising, creating a positive pressure area at the top of a building and negative pressure area at the bottom.

Stack Effect
Air, as in a chimney, that moves upward because it is warmer than the ambient atmosphere.
Stack Effect ...

Stack Effect: Pressure-driven airflow produced by convection as heated air rises, creating a positive pressure area at the top of a building and a negative pressure area at the bottom of a building.

See also: Environment, National, Stack, Reduce, Air