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Pathways for balancing CO2 emissions and sinks.

Brian Walsh1, Philippe Ciais2, Ivan A Janssens3

  • 1International Institute for Applied Systems Analysis, Schlossplatz 1, A-2361 Laxenburg, Austria.

Nature Communications
|April 14, 2017
PubMed
Summary

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This summary is machine-generated.

Global decarbonization requires emissions to peak within 10 years. Reducing fossil fuel consumption is critical to meet climate targets, especially if negative emissions technologies are unfeasible.

Area of Science:

  • Climate Science
  • Energy Systems Analysis
  • Environmental Policy

Background:

  • The 2015 Paris Agreement committed nations to global net decarbonization before 2100 to reverse anthropogenic climate change.
  • The agreement lacks specific mitigation strategies, leading to diverse national approaches.
  • Understanding emissions pathways is crucial for achieving climate targets.

Purpose of the Study:

  • To project energy and land-use emissions mitigation pathways through 2100.
  • To assess the feasibility of meeting COP21 targets under various scenarios.
  • To analyze the impact of carbon-climate feedbacks on mitigation strategies.

Main Methods:

  • Utilized best-available parameterization for carbon-climate feedbacks and interdependencies.

Related Experiment Videos

  • Modeled energy and land-use emissions mitigation pathways.
  • Projected emissions trajectories to the year 2100.

    • Main Results:

    • Anthropogenic emissions must peak within the next decade to realistically meet COP21 targets.
    • Fossil fuel consumption needs to fall below 25% of primary energy supply by 2100.
    • Allowable fossil fuel consumption decreases significantly if negative emissions technologies are not viable.

    Conclusions:

    • Urgent emissions peaking is essential for achieving global climate goals.
    • Significant reductions in fossil fuel reliance are necessary.
    • The feasibility of negative emissions technologies critically impacts mitigation pathways.