Important for
Prelims: Geography and Environment
Mains: General Studies I
EL-NINO & LA-NINA
- Warming of sea waters in Central-east Equatorial Pacific that occurs every few years.
- During El Niño, surface temperatures in the equatorial Pacific rise.
- Trade winds are stronger than usual, pushing warmer water towards Asia.
- Cooler than average sea surface temperatures in the equatorial Pacific region.
Effect of EL-NINO and LA-NINA on Indian Monsoon
- La Nina condition is muchly favourable for Indian agriculture and the economy. This way, a La Nina effect will create sufficient precipitation in India
- El Nino during the winter causes warm conditions over the Indian subcontinent and dry and deficient monsoons during summer. Hence, it creates a draught-like situation and affects agriculture
Practice Questions for Prelims
El Nino is a temperature anomaly in ____ Ocean
a) Indian
b) Pacific
c) Southern
d) Atlantic
Ans. b)
Mains Practice Question
What are the causes and effects of El Nino? Discuss.
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