Major Southern Hemisphere ocean layer shifts, raising questions about heat and carbon storage

PHYSorg
Oct 28, 2026, 6:00 am118 pts
The Antarctic Intermediate Water (AAIW)—a vast layer of fresh water spanning much of the Southern Hemisphere's ocean—has rapidly reversed its long-term trends in salinity and density, according to new research. The AAIW helps store carbon, supply oxygen and drive global ocean currents.

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