Temperature
Lapse rate- decrease of temperature with height: G
= - dT/dz
Environmental lapse rate (G) order 6C/km in free
atmosphere
 Gd- dry adiabatic lapse rate- rate at which an
unsaturated parcel cools when lifted= 9.8 C/km
 Gs- saturated adiabatic lapse rate- rate at which a
saturated parcel cools when lifted= 4-9.8 C/km