A thermodynamic variable similar to potential temperature, except that the concept of static energy assumes that any kinetic energy is locally dissipated into heat.

The amount of this dissipative heating is often negligible. When dry static energy, s, is expressed in units of kJ kg⁻¹, the resulting values are of order 300 kJ kg⁻¹, which reinforces the analogy with potential temperatures in units of Kelvin. Dry static energy is conserved during unsaturated vertical and horizontal motion, and is defined as