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Ocean set 'alarming' new temperature record in 2025
By Edward Carver Every calendar year since 2019, ocean temperatures have reached new record highs. 2025 was no exception, ...
The year 2025 was the warmest on record for the heat content of the world’s oceans. Ocean heat content (OHC) increased by around 500 zettajoules – billion trillion joules – since the 1940s.
The Climate Shift Index: Ocean quantifies the influence of climate change on sea surface temperatures. It’s grounded in peer-reviewed attribution science and was launched by Climate Central in 2024.
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