The saturated adiabatic lapse rate is the rate of adiabatic cooling in saturated atmospheric conditions. The rate is usually about 5 degrees per km.
Sources: Hardy, Colin C., Ottmar, Roger D., Peterson, Janice L., Core, John E., and Seamon, Paula. 2001. Smoke Management Guide for Prescribed and Wildland Fire 2001 Edition. Produced by the National Wildfire coordinating Group Fire Use Working Team.