Dry-adiabatic lapse rate
From AMS Glossary
dry-adiabatic lapse rate
- A process lapse rate of temperature, the rate of decrease of temperature with height of a parcel of dry air lifted by a reversible adiabatic process through an atmosphere in hydrostatic equilibrium.
This lapse rate is g/cpd, where g is gravitational acceleration and cpd is the specific heat of dry air at constant pressure, approximately 9.8°C km-1. Potential temperature is constant with height in an atmospheric layer with this lapse rate.