Geoscience Reference
In-Depth Information
Figure 9.6 An artist's sketch of instantaneous plumes of effluent in a CBL. From
Briggs
(
1988
).
Figure 9.7 Upper: A boundary layer made stably stratified by flowing over a cooler
surface. Lower: A boundary layer made stably stratified by entrainment of warmer
air aloft.
an order of magnitude thinner than the daytime convective ABL) with large eddies
much smaller and weaker than in the convective case.
Under stable conditions the buoyancy term in the TKE equation
(8.70)
rep-
resents a rate of loss through buoyant destruction (
BD
), the rate of working of
the vertical turbulent motion against restoring buoyancy forces;
BD
supplements
