There are several thermodynamical processes in the atmosphere in which heat is prevented from entering or leaving a system during the process. Changes taking place during such a process are called adiabatic changes. This condition can be met in two ways: either by thermally insulating the system, or by allowing the changes to occur so rapidly that there is no communication of the system with the outside, so far as heat transfer is concerned.
The following are some examples of adiabatic changes in the atmosphere:
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