Which of the following is the primary reason for the Nor'westers in West Bengal?
A. Convection
B. Cyclones
C. Monsoon trough
D. Western Disturbances
Answer: Option A
Solution (By JKSSB Mock Tests)
Nor'westers are pre-monsoon thunderstorms that occur in West Bengal and Assam, caused by intense convection and the interaction of dry hot winds from the northwest with moist air from the Bay of Bengal.
Explanation:
The heating of the Tibetan Plateau during pre-monsoon season creates a large thermal low, drawing in moisture-laden winds from the Indian Ocean, triggering the monsoon.
Explanation:
Loo is a strong, hot, dry wind that blows over the northern plains of India during summer, especially in Rajasthan, Uttar Pradesh, and Bihar.
Explanation:
A positive NAO phase is characterized by stronger than normal Azores High and Icelandic Low, leading to stronger westerly winds, milder and wetter winters in northern Europe, and colder and drier winters in southern Europe.
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