Multiple Choice Questions on La Nina is suspected to have caused recent floods in Australia How is La Nina different from EI Nino........... for RAS Exam Preparation

Geography

Title

45:30

8 of 24 completed

5 of 15 completed

38 of 100 completed

8 of 20 completed

Indian Economy - Understanding the basics of Indian economic system

La Nina is suspected to have caused recent floods in Australia. How is La Nina different from EI Nino? (UPSC 2011)

La Nina is characterized by un-usually cold ocean temperature in equatorial Indian Ocean whereas EI Nino is characterized by unusually warm ocean temperature in the equatorial Pacific Ocean.
EI Nino has an adverse effect on the south-west monsoon of India, but La Nina has no effect on monsoon climate.

Which of the statements given above is/are correct?

1 only

2 only

Both 1 and 2

Neither 1 nor 2

Characteristics	La- Nina	El- Nino
Sea Surface Temperature in the central and eastcentral Equatorial Pacific	Large-scale cooling (Cold phase of ENSO)	Large-scale warming (warm phase of ENSO)
Up welling	Enhanced	Reduced
Trade winds (easterly winds) in the Pacific	Stronger than normal	Weaker than normal Winds may blow the other way i.e. from west to east (toward South America instead of Indonesia)
Indian Monsoon	Better than normal Monsoon in India (may cause floods)	Weakens the Indian Monsoon (may cause draught)
Frequency of occurrence	Less frequent	More frequent

A La Niña phenomena generally affects the same regions that are impacted by El Niño, with opposite climatic consequences.