2. For gases it is easiest to use the temperature as the quantity to analyse stability. An air parcel, in a US standard atmosphere, is at 100m above sea level in thermal equilibrium with its surroundings. The air parcel now has its temperature raised by 3.0 K a. Calculate the acceleration of the air parcel. b. State, and justify, whether the motion of the air parcel is stable, neutral or unstable.

2. For gases it is easiest to use the temperature as the quantity to analyse stability. An air parcel, in a US standard atmosphere, is at 100m above sea level in thermal equilibrium with its surroundings. The air parcel now has its temperature raised by 3.0 K a. Calculate the acceleration of the air parcel. b. State, and justify, whether the motion of the air parcel is stable, neutral or unstable.