Summary
This IPCC Working Group I chapter synthesises peer-reviewed evidence on long-term climate projections and the physical mechanisms driving committed warming and irreversibility in the climate system. As a contribution to the Fifth Assessment Report, it provides the scientific foundation for understanding how different emission trajectories translate to long-term warming commitments and persistent climate changes beyond 2100, with implications for agricultural and land-use adaptation planning.
Regional applicability
The findings are globally applicable and have informed United Kingdom climate policy, including the Climate Change Act and sectoral adaptation strategies. The projections underpin UK-specific climate scenarios used in biodiversity and agricultural resilience planning.
Key measures
Projected temperature changes, greenhouse gas concentration pathways, climate commitment under stabilisation scenarios, timescales of irreversibility
Outcomes reported
The chapter synthesises long-term climate change projections and discusses committed warming and climate change irreversibility under different emission scenarios. It addresses the physical science basis for understanding climate trajectories over decadal to centennial timescales.
Topic tags
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