# Specific heat capacity

From Glossary of Meteorology

## specific heat capacity

(

*Or*specific heat.) The heat capacity of a system divided by its mass.It is a property solely of the substance of which the system is composed. As with heat capacities, specific heats are commonly defined for processes occurring at either constant volume ( For moist air, the specific heat capacities of the dry air and water vapor must be combined in proportion to their respective mass fractions.

*c*_{v}) or constant pressure (*c*_{p}). For an ideal gas, both are constant with temperature and related by*c*_{p}=*c*_{v}+*R*with*R*the gas constant. For dry air at 273 K,Dutton, J. A. 1995. Dynamics of Atmospheric Motion. Dover Press, . 41–45, 406–410.

Sommerfeld, A. 1964. Thermodynamics and Statistical Mechanics. Academic Press, . p. 45.