DEFINITION:

Value created from the stability in the planetary boundary layer using the Brunt-Vaisala Frequency and the transport wind speed (m/s). It is used as a tool for air quality forecasters to determine the potential of the atmosphere to disperse contaminants such as smoke or smog.

Below is a table to describe the values of the B-V Ventilation Index. There are many different interpretations of this value as the description (i.e. GOOD, POOR) is very subjective.