explain convectional and orographic rainfall
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Convectional Rain:-
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The air on being heated becomes light and rises up in convection currents.As the air rises, it expands and drops the temperature and subsequently, condensation takes place and cumulous clouds are formed.Heavy rainfall with thunder and lightning takes place which does not last long.Such rain is usual in the summer or in the hotter part of the day.This type of rainfall is common in the equatorial regions and internal parts of the continents, predominantly in the northern hemisphere.
Orographic Rain :-
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When the saturated air mass comes across a mountain, it is forced to rise.The rising air expands, the temperature falls, and the moisture is condensed.The principal characteristic of this type of rain is that the windward slopes get more rainfall.After giving rain on the windward side, when these winds reach the other slope, they drop away, and their temperature increases. Then their ability to take in moisture increases and hence, these leeward slopes remain rainless and dry.The region situated on the leeward side is known as the rain-shadow area.
_____________
The air on being heated becomes light and rises up in convection currents.As the air rises, it expands and drops the temperature and subsequently, condensation takes place and cumulous clouds are formed.Heavy rainfall with thunder and lightning takes place which does not last long.Such rain is usual in the summer or in the hotter part of the day.This type of rainfall is common in the equatorial regions and internal parts of the continents, predominantly in the northern hemisphere.
Orographic Rain :-
_______________
When the saturated air mass comes across a mountain, it is forced to rise.The rising air expands, the temperature falls, and the moisture is condensed.The principal characteristic of this type of rain is that the windward slopes get more rainfall.After giving rain on the windward side, when these winds reach the other slope, they drop away, and their temperature increases. Then their ability to take in moisture increases and hence, these leeward slopes remain rainless and dry.The region situated on the leeward side is known as the rain-shadow area.
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