Q. With reference to the Indian Ocean Dipole (IOD), consider the following statements:
1.The Indian Ocean Dipole (IOD) refers to the difference in sea surface temperatures between the western equatorial Indian Ocean and the eastern equatorial Indian Ocean near Indonesia.
2.A positive IOD is characterized by warmer-than-normal sea surface temperatures near Indonesia and cooler-than-normal temperatures near the African coast, generally resulting in above-normal rainfall over India.
Which of the statements given above is/are correct?
Answer: A
Notes:
Explanation: 1 only
Statement 1 is correct: The Indian Ocean Dipole (IOD) is an ocean-atmosphere phenomenon defined by the difference in sea surface temperatures (SSTs) between the western equatorial Indian Ocean (near the East African coast) and the eastern equatorial Indian Ocean (near Indonesia).
Statement 2 is incorrect: A positive IOD is associated with warmer-than-normal SSTs in the western Indian Ocean and cooler-than-normal SSTs near Indonesia. It often enhances the Indian summer monsoon, although its impact depends on interactions with phenomena such as ENSO.
Source: IE
