Kirchhoff's equation

From Glossary of Meteorology



Kirchhoff's equation

A relation that equates the variation with temperature of the latent heat of a phase change to the difference between the specific heats of the two phases.

For the heat of vaporization this may be written as
ams2001glos-Ke6
where Lv is the latent heat of vaporization, cpv is the specific heat at constant pressure of water vapor, and cw is the specific heat of liquid water.