Which major global oceanic phenomenon involves the deep-water circulation driven by global density gradients created by surface heat and freshwater fluxes, linking all major ocean basins?

💡 Solution & Explanation

The thermohaline circulation is a global conveyor belt of deep ocean currents driven by differences in water temperature and salinity, playing a vital role in regulating Earth's climate and heat distribution. ENSO and the Indian Ocean Dipole are coupled ocean-atmosphere climate phenomena affecting regional weather anomalies, whereas the Pacific Decadal Oscillation is a long-term climate fluctuation in the Pacific. Disruptions in global oceanic and atmospheric systems indirectly influence precipitation patterns across the South Asian monsoon domain.