Derived Weather Parameters - Atmospheric Turbulence

Richardson Number | Turbulence CAPE Index

Atmospheric Turbulence

Richardson Number

The Richardson number is the ratio of buoyancy and flow shear terms. It is expressed by a dimensionless number between 0 and 10. In aviation the Richardson Number can be used to assess atmospheric turbulence. This is also referred to as Clear Air Turbulence (CAT). Values below unity indicate significant turbulence.


Available levels: 100hPa, 300hPa, 500hPa Examples

Turbulence CAPE Index

Turbulence index incorporating CAPE. The index is computed for the total atmospheric column and not for single layers. This index allows for checking if turbulence is present. The values range from 0 (no turbulence expected) to 1 (turbulence expected)