Geography · Climatology
Consider the following statements regarding the interplay between Indian Ocean Dipole (IOD) and El Nino-Southern Oscillation (ENSO) and their impact on the Indian Summer Monsoon: Statement 1: A Positive IOD can counteract the negative effects of El Nino by altering wind patterns over the Indian Ocean, thereby enhancing monsoon rainfall over India. Statement 2: A Negative IOD tends to suppress monsoon rainfall over India, but when combined with La Nina—which usually strengthens the monsoon—the net impact on Indian rainfall is uncertain and depends on which influence dominates. Statement 3: The combined presence of a Positive IOD and La Nina weakens the monsoon, as both phenomena work together to reduce moisture flow into the Indian subcontinent. Which one of the following is correct in respect of the above statements?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Only Statement 1 and Statement 2 are correct✓
- 2Only Statement 1 and Statement 3 are correct
- 3Both Statement 1 and Statement 2 are correct, but Statement 2 is not the correct explanation for Statement1
- 4Both Statement 1 and Statement 2 are correct, and Statement 2 is the correct explanation for Statement 1
Correct answer
Only Statement 1 and Statement 2 are correct
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