Question

What is El Nino ? How does it effect on monsoon rains in our country ?

Answer 1

Trade winds coming from South America normally blow westward towards Asia during Southwest Monsoon. Warming of the Pacific Ocean results in weakening of these winds. Therefore, moisture and heat content gets limited and results in reduction and uneven distribution of rainfall across the Indian sub-continent

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Answer 2

El nino is an irregularly occurring and complex series of climatic changes affecting the equatorial Pacific region and beyond every few years, characterized by the appearance of unusually warm, nutrient-poor water off northern Peru and Ecuador, typically in late December. El Nino, the warming phase, impacts India's southwest monsoon. ... Overall, deficiency in the rainfall over northeast India will continue