Which one of the fallowing instrument is used for determination of degree of stability or instability of an air parcel?
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The vertical distribution of the surrounding temperature is measured.
The air parcel is left to rise in the atmosphere.
If the temperature inside the parcel is lower than the surrounding temperature meaning the parcel is denser than the surrounding air thus it falls hence the air is stable.
If the parcel is less dense than the surrounding air it rises and thus it shows that the surrounding air is unstable.
If the surrounding temperature is equal to the temperature of air inside the parcel the air stability is neutral.
The instrument is thus an air parcel.
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