From Glossary of Meteorology
Revision as of 18:07, 25 April 2012 by
A rule proposed by Toussaint for the linear decrease of temperature with height in an atmosphere for which the temperature at mean sea level is 15°C.
It is given by
where t is the temperature in degrees Celsius and z is the geometric height in meters above mean sea level. Toussaint's formula is used to determine temperature below 11 000 m in the ICAO Standard Atmosphere.