Question
Orographic rainfall

Answer

  • Winds coming from lakes or seas are moisture-laden. They are obstructed by the high mountain ranges coming in their way.
  • They start going upwards along the slope of the mountains.
  • The temperature of these winds drop and condensation occurs and rainfall takes place. Thus because of the obstruction of the mountains, this type of rainfall occurs.
  • The windward side of the mountains gets; more rain; the amount of vapour in the air reduces after crossing the mountain and the moisture-holding capacity of the air increases.
  • The leeward side of the mountain gets lesser rainfall and hence this area is identified as rain- shadow area.

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