Mountain and valley breezes – UPSC GS1

Mountain and valley breezes occur alternatively in a day in hilly areas. During day time valley region receives more insolation and radiates more terrestrial radiation heating up the air present on the valley surface. Air on heating loses its density and moves up the mountain surface causing valley breeze. During night, air on the mountain surface cools, gains density and seeps down to the valley floor causing mountain breeze.

 

 

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