differentiate between conventional and orographic rainfall with the help of diagram
Answers
Relief Rainfall (Orographic)
(i) Relief rainfall is caused when the mountain forces the air to rise along the up slopes of the mountain.
(ii) It takes place on the windward side of the mountain and the leeward side gets very less rain and is known as the rain shadow area.
(iii) It takes place in the mountainous region, e.g., Western Ghats. High pressure belt to the sub polar low pressure belt.
Convectional Rainfall (Noon Rain)
(i) Rainfall is caused by vertical ascent (convection) of heated air.
(ii) It is in the form of heavy downpour and is accompanied with thunder and lightening. It is for a short time.
(iii) It takes place in the equatorial region daily and in the interiors of the continents in summer.
Occurs mostly in tropics where it is hot. When air is hot is rises and cools and condenses forming rain. If the air is hot enough, it rises very quickly and can cause thunderstorms. This is called Convectional rainfall.
but
orograpic rainfall occurs when air has been blown over the sea and is then forced up over an area of high land. This causes the air to cool and the moisture in the air condenses and rain falls.
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Relief Rainfall (Orographic)
(i) Relief rainfall is caused when the mountain forces the air to rise along the up slopes of the mountain.
(ii) It takes place on the windward side of the mountain and the leeward side gets very less rain and is known as the rain shadow area.
(iii) It takes place in the mountainous region, e.g., Western Ghats. High pressure belt to the sub polar low pressure belt.
Convectional Rainfall (Noon Rain)
(i) Rainfall is caused by vertical ascent (convection) of heated air.
(ii) It is in the form of heavy downpour and is accompanied with thunder and lightening. It is for a short time.
(iii) It takes place in the equatorial region daily and in the interiors of the continents in summer.
Occurs mostly in tropics where it is hot. When air is hot is rises and cools and condenses forming rain. If the air is hot enough, it rises very quickly and can cause thunderstorms. This is called Convectional rainfall.
but
orograpic rainfall occurs when air has been blown over the sea and is then forced up over an area of high land. This causes the air to cool and the moisture in the air condenses and rain falls.