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← GeographyWhich phenomenon causes enhanced precipitation downwind of major mountain ranges in humid mid-latitude zones?
A)Adiabatic cooling and orographic lift✓
B)Ekman transport and coastal upwelling
C)Hadley cell subsidence and convergence
D)Rossby wave amplification and blocking
💡 Explanation
When humid air encounters a mountain range, orographic lift forces it upwards, causing adiabatic cooling and condensation because air parcel cools at the dry then wet adiabatic lapse rate, leading to precipitation. Therefore, increased rainfall occurs on the windward side, rather than upwelling, subsidence, or wave activity which require different geographic and atmospheric conditions.
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