Which of the following is the primary reason for the formation of coastal deserts?
A. Cold ocean currents
B. Monsoon winds
C. Subtropical high pressure
D. Rain shadow effect
Answer: Option A
Solution (By JKSSB Mock Tests)
Coastal deserts, such as the Atacama and Namib Deserts, form primarily due to cold ocean currents that cool the air, suppress evaporation, and stabilize the atmosphere, preventing rainfall.
Explanation:
The northeastern states, especially Meghalaya, receive high rainfall due to the orographic effect of the Himalayas and the Eastern Ghats. The moisture-laden southwest monsoon winds are forced to rise over these mountains, causing heavy precipitation.
Explanation:
The southwest monsoon is not a dry wind; it is moisture-laden. It brings the majority of rainfall to India from June to September and is essential for agriculture.
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