How 'Super' El Niño and Ocean Anomalies Uniquely Impact Tamil Nadu

Gist The ongoing 'super' El Niño phenomenon, characterized by significant warming in the Pacific Ocean, is poised to impact Tamil Nadu drastically differently than the rest of India. While India generally faces deficient rainfall and droughts during El Niño years, Tamil Nadu is likely to experience a supercharged Northeast monsoon resulting in extreme rainfall and cyclones. For UPSC aspirants, understanding micro-level climate drivers like the Indian Ocean Dipole IOD and the East India Coastal Current EICC is crucial for explaining regional anomalies in India's monsoon system. Background The El Niño Southern Oscillation ENSO is a recurring global climate phenomenon occurring every two to seven years , driven by the abnormal warming of surface waters in the Pacific Ocean off the coasts of Peru and Ecuador. Typically, an El Niño year disrupts the Southwest monsoon, causing droughts across the Indian subcontinent. The Indian Ocean Dipole IOD is an independent regional climate driver defined by the temperature difference between the western equatorial Indian Ocean near Africa and the eastern sector near Indonesia . A Positive IOD occurs when the western Indian Ocean…