With reference to ‘Indian Ocean Dipole (IOD)’ sometimes mentioned in the news while forecasting Indian monsoon, which of the following statements is/are correct?
- IOD phenomenon is characterised by a difference in sea surface temperature between tropical Western Indian Ocean and tropical Eastern Pacific Ocean.
- An IOD phenomenon can influence an El Nino’s impact on the monsoon.
- IOD phenomenon is characterised by a difference in sea surface temperature between tropical Western Indian Ocean and tropical Eastern Pacific Ocean.
- An IOD phenomenon can influence an El Nino’s impact on the monsoon.
Select the correct answer using the code given below:
Correct Answer: Option B
The Indian Ocean Dipole (IOD), also known as the Indian Niño, is characterized by differences in sea surface temperatures between the tropical Western Indian Ocean and the tropical Eastern Indian Ocean, not the Eastern Pacific Ocean.
IOD can influence the impact of El Niño on the Indian monsoon. Recent studies indicate that IOD has a more significant effect on rainfall patterns in southeast Australia than the El Niño-Southern Oscillation (ENSO) in the Pacific Ocean.
Statement 1 is not correct. Statement 2 is correct. Hence, only statement 2 is correct.