Die globale Meereswärme brach im Jahr 2025 Rekorde. Die Hitze in den oberen 2 km des Ozeans stieg um schätzungsweise 23 Zettajoule. Das entspricht der Detonation von Hunderten Millionen Hiroshima-Atombomben – oder etwa dem 200-fachen des weltweiten Stromverbrauchs im Jahr 2023.

The world’s oceans absorbed more heat in 2025 than in any year since modern records began, according to a major international analysis.

Ocean heat content rose by 23 zettajoules – the equivalent of detonating hundreds of millions of Hiroshima atomic bombs, or roughly 200 times humanity’s global electricity consumption in 2023 – according to the analysis published in Advances in Atmospheric Sciences.

Unlike sea surface temperatures, ocean heat content is a measure of how much excess energy the world’s oceans are storing over time, including at depth.

The ocean is the hottest on record,” says Dr Kevin Trenberth, co-author of the study and an honorary academic at the University of Auckland.

“We’re looking at creating a very different planet – do we really want to do that?”

The study was released days after 2025 was confirmed as one of the three hottest years on record.

The analysis draws on four datasets – three observational products from the Institute of Atmospheric Physics at the Chinese Academy of Sciences, NOAA’s National Centers for Environmental Information and Copernicus Marine as well as an ocean reanalysis product – which together show that ocean heat content reached the highest level on record in 2025.

https://link.springer.com/article/10.1007/s00376-026-5876-0

I feel like the part of musical chairs when the music is about to stop and you need to stop walking around and just focus on your chair game plan.