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PPL » Meteorology » Atmospheric Stability

8.18 Atmospheric Stability

8.18.2 Define:

(a) stable air;

(b) unstable air;

(c) conditionally unstable air.

8.18.4 Describe how the stability of a rising (or sinking) parcel of air is determined by its temperature compared with the temperature of the surrounding environment.

8.18.6 Describe what is meant by ‘environment lapse rate’ (ELR).

8.18.8 Explain how the environmental temperature and dew point lapse rates are found.

8.18.10 Outline the term ‘adiabatic process’.

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