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Air pollution

Climate Change Projections and Mitigation Efforts Show Limited Impact

Strategic Insights

— 1 min read

Investigations at the University of Washington have brought to light new insights into climate change projections and mitigation efforts. According to the research, despite the Paris Agreement's aim to limit greenhouse gas emissions, economic growth has offset mitigation efforts, leading to a decline in carbon intensity but an overall rise in carbon emissions. The study used data from 2015 to 2024 to assess the changes in climate change prospects associated with post-Paris emissions, finding that the projected temperature increase to 2100 declined only slightly, from 2.6° C to 2.4 °C. The chance of staying below 2 °C remained low, at 17%, while the chance of the most catastrophic climate change, above 3 °C, has gone down substantially, from 26% to 9%.

Key Takeaways:

  • The Paris Agreement's goal to limit greenhouse gas emissions has been undermined by economic growth, which has offset mitigation efforts.
  • Carbon intensity declined by an unspecified amount over the period 2015-2024, but overall carbon emissions rose due to the rapid rise in world GDP.
  • The projected temperature increase to 2100 declined from 2.6° C to 2.4 °C, with a slight reduction in the chance of staying below 2 °C to 17%.
  • The chance of the most catastrophic climate change, above 3 °C, decreased from 26% to 9%.
  • The study used an alternative fully statistical Bayesian probabilistic approach to project climate change, developed since 2017.

Statistics:

  • The projected temperature increase to 2100: 2.6° C (pre-2017 approach) to 2.4 °C (new approach)
  • Chance of staying below 2 °C: 17%
  • Chance of the most catastrophic climate change (above 3 °C): 26% (pre-2017 approach) to 9% (new approach)
  • Carbon intensity decline: unspecified over the period 2015-2024
  • Overall carbon emissions: rose due to rapid world GDP growth
  • Study period: 2015-2024

Sources:

  • Communications Earth & Environment (2025, 6(1):1-11)
  • University of Washington
  • U.S. Department of Health & Human Services | National Institutes of Health
  • Nature Portfolio (publisher)
  • https://doi-org.sdpl.idm.oclc.org/10.1038/s43247-025-02743-x

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