AI Summary

A study from the Met Office Hadley Centre and collaborators examined the zero emissions commitment (ZEC)—the temperature change after CO₂ emissions cease—using the UK Earth System Model (UKESM1.2). Simulations that halted emissions at warming levels up to 2 °C above pre‑industrial showed global temperatures remaining roughly stable. In contrast, stopping emissions after warming reached 3 °C to 5 °C produced an additional 0.4 °C–0.6 °C rise over the next 150 years. The findings indicate that the magnitude of prior warming strongly influences the post‑emission temperature trajectory.

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