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Experts 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.
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54 Articles
54 Articles
The world's oceans absorbed a record amount of heat in 2025, an international team of scientists reported on Friday.
·Vilnius, Lithuania
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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…
·New York, United States
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It is the ninth consecutive year that the heat stored by the oceans reaches a record high.
·Montreal, Canada
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Coverage Details
Total News Sources54
Leaning Left11Leaning Right3Center22Last UpdatedBias Distribution61% Center
Bias Distribution
- 61% of the sources are Center
61% Center
L 31%
C 61%
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