With reference to lsquo Indian Ocean Dipole IOD rsquo sometimes mentioned in the news while forecast...........

Geography Monsoons and Climate in India

With reference to ‘Indian Ocean Dipole (IOD)’ sometimes mentioned in the news while forecasting Indian monsoon, which of the following statements is/are correct?

1. IOD phenomenon is characterised by a difference in sea surface temperature between tropical Western Indian Ocean and tropical Eastern Pacific Ocean.

2. An IOD phenomenon can influence an El Nino’s impact on the monsoon.

Select the correct answer using the code given below:

1 only

2 only

Both are correct

Neither is correct

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Explanation:

Second option is correct.
First statement is incorrect.
The Indian Ocean Dipole (IOD), also known as the Indian Nino, 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 Indian ocean.
Second statement is correct. Though IOD is an independent phenomenon, it often occurs along with El-Nino.