Discussion
Assertion (A): Air descending the lee slope of a range is warmer than the air that started up the windward side.
Reason (R): Latent heat released during condensation stays with the parcel while the condensed water falls out.
Answer: D
Both are true and the reason gives the asymmetry, and this is the physics of the foehn or chinook wind. The parcel ascends at the saturated rate but descends at the larger dry rate. The difference between the two rates is the whole of the warming observed.
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