US EditionExperts say oceans soaked up record heat levels in 2025
Oceans absorbed 7 zettajoules more heat than in 2024, marking eight consecutive years of rising ocean heat caused by greenhouse gas emissions, researchers reported.
- On Friday, a peer-reviewed study in Advances in Atmospheric Science found the world’s oceans absorbed an additional 23 zettajoules in 2025, marking the eighth straight annual increase since 2018.
- Rising greenhouse-gas concentrations from burning fossil fuels are accelerating ocean warming, and circulation carries much of this heat into the deep ocean, so surface data understates warming, researchers said.
- More than 50 scientists from 31 research institutions used multiple data sources, including a thousands-strong fleet of floating robots sampling to 2,000 metres, to measure heat uptake across tropical oceans and others.
- Rising ocean heat drives stronger tropical cyclones, heavier rainfall, sea-level rise, and deadly marine heatwaves harming tropical reefs and coastal communities.
- Unless warming is addressed, researchers warn oceans will keep breaking records despite slightly lower sea surface temperatures linked to El Niño/La Niña shift.
49 Articles
49 Articles
The Oceans Were Hotter Than Ever in 2025
The Earth’s oceans were hotter in 2025 than in any year since modern measurements began, marking a dangerous new record. New analysis published in the peer-reviewed journal Advances in Atmospheric Sciences on Friday found that the upper 2,000 meters (6,561 ft.) of the ocean absorbed a record-setting 23 zettajoules more energy than in 2024—equivelant to roughly 37 times more energy than the world consumed in 2023. [time-brightcove not-tgx=”true…
It is the ninth consecutive year that the heat stored by the oceans reaches a record high.
It is the ninth year in a row that the previous record has been broken, according to a study published this Friday, January 9. This phenomenon weakens marine ecosystems and worsens climate disasters.
Channel News Asia
Experts say oceans soaked up record heat levels in 2025
BREST: The world's oceans absorbed a record amount of heat in 2025, an international team of scientists said on Friday (Jan 9), further priming conditions for sea level rise, violent storms, and coral death.The heat that has accumulated in the oceans last year increased by approximately 23 zettajoules
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