This process contributes to the hurricane center s higher temperature. Heated air rises. As heated air rises, it cools. This cooling is due to the expansion it experiences. It cools because the air molecules have more room to spread out.
Instability is the tendancy of different air parcels to rise spontaneously.
Parcels of air that are warmer than the surrounding parcels of the same elevation will rise relative to those colder parcels. Thunderstorm development has something to do with peak heating during the day. As move away from the ground temperature decreases. The temperatures aloft are usually lower at the surface. Energy from the sun travels to the Earth.