UPSC CSE Prelims
Question 82
La Nina is suspected to have caused recent floods in Australia. How is La Nina different from El Nino ?
- La Nina is characterised by unusually cold ocean temperature in equatorial Indian Ocean whereas El Nino is characterised by unusually warm ocean temperature in the equatorial Pacific Ocean.
- El Nino has adverse effect on south-west monsoon of India, but La Nina has no effect on monsoon climate.
Which of the statements given above is/are correct ?
View correct answer and explanation
Correct answer: D
Correct Option: D
Explanation: La Niña features anomalously cool central/eastern equatorial Pacific waters and can influence Indian monsoon circulation; both statements mislocate or oversimplify ENSO.
Statement / Item-wise Analysis:
1: Incorrect - Incorrect: La Niña is a Pacific Ocean phenomenon, not cold conditions in the equatorial Indian Ocean.
2: Incorrect - Incorrect: La Niña can influence the southwest monsoon, often favouring stronger rainfall conditions; it is not without effect.
Option-wise Analysis:
A: Incorrect - includes unsupported item 1.
B: Incorrect - includes unsupported item 2.
C: Incorrect - includes unsupported items 1, 2.
D: Correct - correctly excludes all the listed statements.