Climate

New global maps chart 40 years of ocean heat and acidification extremes

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 25/09/2026, 11:39:23 UTC.

Briefings

A new study published in August 2026 in AGU Advances reveals that compound marine heat-acidity events occur more frequently than chance would predict. Researchers from ETH Zurich analyzed data from 2014 to 2026, identifying 500 such events across the globe. The study highlights that these events are mostly short-lived, with 67% lasting less than three months, and are linked to underlying ocean physics enabling simultaneous heat and acidification. The findings suggest these events may influence the developing 2026-2027 super El Niño, though the specific mechanisms remain partially understood.

Key points

• Researchers from ETH Zurich identified 500 compound marine heat-acidity events between 2014 and 2026, noting they occur more frequently than chance would predict.
• 67% of the 500 identified events lasted less than three months, indicating these compound events are mostly short-lived and small in duration.

Context and limitations

The study covers only the last four decades (2014-2026) and focuses on global occurrences; specific regional variations and long-term trends beyond this period are not detailed.

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