Why does lowest rainfall in gujrat
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Geography is the reason why gujrat receives low rainfall.
India receives rainfall through southwest monsoon (June-Aug) and North east monsoon (Oct-Dec) there are also cyclonic rainfall which occurs. Unfortunately, all these 3 kinds of sources miss out Gujrat and Rajsasthan and hence desert like situation is formed.
In southwest (sw) monsoon, winds blow from south west to north east. It starts by june first week. So large amount of moisture carrying winds flow from Kerala, Karnataka,Maharashtra and Gujrat and moves towards NE India.In Kerala and Karnataka, there is the Mighty Western ghats which is exactly perpendicular to the direction of the wind (Western Ghats is SE to NW direction and Monsoon winds are SW to NE direction). When these winds hit and hills and move over it, it cools down and looses all its moisture as rain. This rain is the source of all main south indian rivers like Godavari , Krishna, Cauvery, Periyar etc.In Maharashtra there is the Sahyadri hills which is the continuation of Western ghats and hence rain falls there also.But when the winds come to Gujrat, there is no Big mountains to oppose the flow of the Moisture and hence no rains are produced, forming deserts. The only range present in the area Aravallis but since it is parallel to the wind flow (and not perpendicular like western ghats) it doesnt oppose the wind flow and hence no rain falls in that region. All these moisture are deposited only on the foot hills of himalyas.
The south west monsoon comes from oceans and hence carry moisture and give rain, but NE winds are dry as they come from interior parts of the land. Hence no rain can be given to Gujrat even though the NE winds flow through them. The blue lines are the SW monsoon winds and the Red are the NE monsoon winds.
India receives rainfall through southwest monsoon (June-Aug) and North east monsoon (Oct-Dec) there are also cyclonic rainfall which occurs. Unfortunately, all these 3 kinds of sources miss out Gujrat and Rajsasthan and hence desert like situation is formed.
In southwest (sw) monsoon, winds blow from south west to north east. It starts by june first week. So large amount of moisture carrying winds flow from Kerala, Karnataka,Maharashtra and Gujrat and moves towards NE India.In Kerala and Karnataka, there is the Mighty Western ghats which is exactly perpendicular to the direction of the wind (Western Ghats is SE to NW direction and Monsoon winds are SW to NE direction). When these winds hit and hills and move over it, it cools down and looses all its moisture as rain. This rain is the source of all main south indian rivers like Godavari , Krishna, Cauvery, Periyar etc.In Maharashtra there is the Sahyadri hills which is the continuation of Western ghats and hence rain falls there also.But when the winds come to Gujrat, there is no Big mountains to oppose the flow of the Moisture and hence no rains are produced, forming deserts. The only range present in the area Aravallis but since it is parallel to the wind flow (and not perpendicular like western ghats) it doesnt oppose the wind flow and hence no rain falls in that region. All these moisture are deposited only on the foot hills of himalyas.
The south west monsoon comes from oceans and hence carry moisture and give rain, but NE winds are dry as they come from interior parts of the land. Hence no rain can be given to Gujrat even though the NE winds flow through them. The blue lines are the SW monsoon winds and the Red are the NE monsoon winds.
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