AERMOD Tech Guide

Gaussian Plume Air Dispersion Model

6.2.3 Penetrated Source Contribution to Concentration Calculations in the CBL

The penetrated source concentration expression is a simple Gaussian form (for both vertical and horizontal plume distributions). The contribution from the horizontal plume state is given by the following:

Equation (76)

The total concentration for the terrain responding state has the form of eq. (76) with zr replaced by zp .

The dispersion coefficients (yp & zp ) resulting from the total turbulence (ambient, buoyancy induced & building induced) are calculated using eq. (86).