A unit or measure of solar radiation; 1 calorie per square meter or 3.69 Btu per square foot.
A curve showing the variation of temperature with height in the free air. See lapse rate.
The decrease of an atmospheric variable with height, the variable being temperature, unless otherwise specified.
The load created by moisture in the air, including from outside air infiltration and that from indoor sources such as occupants, plants, cooking, showering, etc.
The change in heat content that occurs with a change in phase and without change in temperature.
The quantity of heat produced to change a unit weight of a liquid to vapor with no change in temperature.