Vertical turbulent buoyancy flux
= Vertical turbulent buoyancy flux
{title2=$B_0=\overline{w'b'}$}
The covariance of vertical velocity and buoyancy fluctuations has dimensions length squared per time cubed. It supplies buoyancy production in the <local turbulent kinetic energy balance>. This local flux density differs dimensionally from the section-integrated <buoyancy flux> of a plume, which includes an area or width integration.