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Story summary
- Southampton researchers reported a 5.8% sea-ice decline between 2024 and 2025, the year-to-year drop on record.
- Dr Duo Chan said the 2005-2024 slowdown was only a temporary pause and that Dr Alessandro Silvano considered the 2025 drop unusual but plausible with Arctic warming.
- Researchers reported that September sea-ice area has halved since 1979 and that reduced winter ice removes an insulating layer, letting ocean heat and moisture enter the atmosphere.
