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A Neutral Atmosphere
For a neutral atmopshere the lapse rate is exactly equal to the DALR. In this case rising or sinking unsaturated air would cool or warm at the same rate as the air around it. At every layer in the atmosphere it would have the same temperature and density as the air aurrounding it and so the air would neither tend to rise or sink. The atmosphere is said to be neutrally stable.
For saturated air, neutral stability exists when the environemtal lapse rate is equal to the moist adiabatic rate.
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