Parameters Characterizing the Atmospheric Boundary Layer

Msteorological Parameters Characterizing the Atmospheric Boundary Layer 

In this section primary attention is directed at the turbulent processes that occur in the mixed layer as a result of the interaction between shear-and buoyancy-driven flows. The flux Richardson number Rf gives a measure of the relative importance of the buoyancy terms in the equations of motion, (g/T)w d , as compared to the shear production terms, u w dutbz. 

Stability is the need for simultaneous determinations of both the heat and momentum fluxes. Another approach is to deflne a quantity similar to Eq. (7.1) called the gradient Richardson number R  

Another stability parameter often used in micrometeorology is the Monin-Obukhov length 

Atmospheric stability is frequently characterized in terms of the Pas-quill A-F stability classes (Pasquill, 1%1. The A-F categories refer to atmospheric conditions as follows A—very unstable, B—moderately un- 

---

VII. Msteorological Parameters Characterizing the Atmospheric Boundary Layer... 

---