Difference between cyclonic and orographic rainfall
Answers
Orographic rainfall - This type of rainfall is caused by the cooling off the moisture laden air as it rises over a high relief barrier.
When the moisture laden winds are unable to cross mountain lying as a barrier in their direction of movement they are forced to ascend the mountains.
The sudden ascend causes cooling off air adiabatically leading to condensation and precipitation.
The windward slopes that face a wind blowing steadily from a warm ocean receive heavy rainfall where most of the moisture is dropped.
When the winds cross the mountain barrier,they have very little moisture left with them. Thus, the leeward side of the barrier receives very low amount of rainfall.
It leads to rain shadow on the leeward side of the mountain where always exists a relatively dry area called ‘rain shadow'.