Examine the atmospheric circulation and climatic dynamics of the Southern Oscillation: Statement I: During La Niña episodes, sea surface temperatures across the central and eastern tropical Pacific drop significantly below average, strengthening trade winds. Statement II: La Niña conditions typically induce enhanced monsoon rainfall over the Indian subcontinent and Australia while triggering severe droughts in parts of South America. Which of the following is correct?

💡 Solution & Explanation

La Niña represents the cold phase of the El Niño-Southern Oscillation cycle, characterized by abnormally cool eastern Pacific waters, intensified Walker circulation cells, and increased convective rainfall across South Asia and Australia. Incorrect statements would reverse these climatic impacts or associate La Niña with widespread Pacific warming. Understanding these coupled ocean-atmosphere anomalies is critical for long-range agricultural and meteorological forecasting.