Inside Climate News: Ocean Warming Breaks Record for Ninth Straight Year

Jan 9 - Scientists warn the ocean’s accumulation of energy is fueling extreme weather patterns and destabilizing marine ecosystems. Global ocean heat content (OHC) increased for the ninth consecutive year in 2025, according to a report released Friday in Advances in Atmospheric Sciences. The study — a collaboration involving more than 50 scientists from 31 international institutions — measured temperature fluctuations in the upper 2,000 meters of the planet’s waters. “Measuring the ocean heat content is probably the best way to measure global heating as a whole,” added Michael Mann, director of the University of Pennsylvania’s Center for Science, Sustainability and the Media. More of STORY.