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Climate Science Global

Climate-overshoot study quantifies risks in degree-years

By Affect Climate Change
A climate trajectory rises above a temperature limit and returns while ocean and permafrost impacts remain visible.
Image credit: Affect Climate Change custom artwork

What happened

Analysis of 42 paired climate-model scenarios found that some long-lived impacts of temporarily exceeding a temperature limit track the cumulative size and duration of the overshoot, expressed as degree-years.

Why it matters

The measure could help compare pathways and clarify why a short peak above a target is not automatically harmless, especially for oceans and permafrost where changes can persist after temperatures decline.

What to watch

  • Further verified reporting or data from Communications Earth & Environment and other primary sources.
  • How this develops in Global, especially around Temperature Overshoot, Climate Modeling, Permafrost.

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Topics

  • Temperature Overshoot
  • Climate Modeling
  • Permafrost
  • Ocean Heat

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