# Buoyancy frequency

From Glossary of Meteorology

## buoyancy frequency

In a continuously stratified fluid, the natural frequency of the vertical oscillation of fluid parcels.

It is also called the Brunt–Väisälä frequency. Explicitly, the squared buoyancy frequency is in which

*g*is the acceleration due to gravity and ρ(*z*) is density as a function of height*z*.