Exner function explained

The Exner function is an important parameter in atmospheric modeling. The Exner function can be viewed as non-dimensionalized pressure and can be defined as:

\Pi=\left(

p
p0
Rd/cp
\right)

=

T
\theta

where

p0

is a standard reference surface pressure, usually taken as 1000 hPa;

Rd

is the gas constant for dry air;

cp

is the heat capacity of dry air at constant pressure;

T

is the absolute temperature; and

\theta

is the potential temperature.

References

See also