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Near-term climate risks and sunlight reflection modification: a roadmap approach for physical sciences research

Author

Listed:
  • Kelly Wanser

    (SilverLining)

  • Sarah J. Doherty

    (Cooperative Institute for Climate, Ocean and Ecosystem Studies, University of Washington)

  • James W. Hurrell

    (Colorado State University)

  • Alex Wong

    (SilverLining
    Pardee RAND Graduate School)

Abstract

Current impacts and escalating risks of climate change require strong and decisive action to reduce greenhouse gas (GHG) emissions. They also highlight the urgency of research to enhance safety for human and natural systems, especially for those most vulnerable. This is reflected in two recent US National Academies of Science, Engineering, and Medicine studies that recommended a national focus on advancing our understanding of how to manage urgent current and future climate risks, and the study of approaches for increasing the reflection of sunlight from the atmosphere to reduce global warming, a process referred to as sunlight reflection modification (SRM). Here, we build on these recommendations by proposing a roadmap approach for the planning, coordination, and delivery of research to support a robust scientific assessment of SRM to reduce near-term climate risks in a defined timeframe. This approach is designed to support the evaluation of SRM as a possible rapid, temporary, additive measure to reduce catastrophic impacts from anthropogenic climate change, not as a substitute for aggressive GHG mitigation. Assessing SRM is proposed to be undertaken in the context of climate hazard risks through 2050, weighing the impacts associated with likely climate change trajectories against scenarios of possible SRM implementations. Provided that research is undertaken openly and that scientific resources are made widely available, the transparency of the process and the evidence generated would contribute to the democratization of information, participation by diverse stakeholders, more informed decision-making, and better opportunities for all people to weigh SRM options against climate change risks.

Suggested Citation

  • Kelly Wanser & Sarah J. Doherty & James W. Hurrell & Alex Wong, 2022. "Near-term climate risks and sunlight reflection modification: a roadmap approach for physical sciences research," Climatic Change, Springer, vol. 174(3), pages 1-20, October.
    • Handle: RePEc:spr:climat:v:174:y:2022:i:3:d:10.1007_s10584-022-03446-4
    DOI: 10.1007/s10584-022-03446-4
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