Science

Climate response: Why previous warming makes all the difference

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 15/11/2026, 15:40:23 UTC.

Briefings

A study led by the Met Office Hadley Center and University of Liverpool found that global temperature rise after CO2 emissions stop depends on prior warming levels. The zero emissions commitment (ZEC) is not necessarily zero but varies based on historical temperature changes.

Key points

• A study led by the Met Office Hadley Center and University of Liverpool found that global temperature rise after CO2 emissions stop depends on prior warming levels.
• The temperature change following zero emissions is known as the zero emissions commitment (ZEC) and is often assumed to be close to zero.

Context

This research addresses the uncertainty regarding the 'zero emissions commitment' (ZEC), which is the temperature rise expected after human CO2 emissions stop. The study indicates this commitment is not universally zero but varies based on how much warming has already occurred.

Limitations

The evidence is limited to a single study from 2026. The specific magnitude of the ZEC for different historical warming scenarios is not quantified in the provided text, and the study does not provide data on future climate projections beyond the initial finding.

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