Question

South-West Monsoon in India is affected by which of the following?

1. El Nino –Southern Oscillation(ENSO)

2. Indian Ocean Dipole.

3. La Nina

• A. a) 1 and 3 only
  
• B. b) 2 only
  
• C. c) All of the above
  
• D. d) None
  

Answer 1

The correct option is C c) All of the above


Answer –c
El Niño–Southern Oscillation (ENSO) is an irregularperiodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean, affecting much of the tropics and subtropics. The warming phase is known as El Niño and the cooling phase as La Niña. While El Nino Weakens the monsoon ,La Nina Stregthens it.
The Indian Ocean Dipole (IOD), also known as the Indian Niño, is an irregular oscillation of sea-surface temperatures in which the western Indian Ocean becomes alternately warmer and then colder than the eastern part of the ocean.