May 2018

26.05.2018

# New Publications

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Tilmes, Simone; et al. (2018): CESM1(WACCM) Stratospheric Aerosol Geoengineering Large Ensemble (GLENS) Project

Tilmes, Simone; Richter, Jadwiga H.; Kravitz, Ben; MacMartin, Douglas G.; Mills, Michael J.; Simpson, Isla R. et al. (2018): CESM1(WACCM) Stratospheric Aerosol Geoengineering Large Ensemble (GLENS) Project. In Bulletin of the American Meteorological Society. DOI: 10.1175/BAMS-D-17-0267.1.

"This paper describes the stratospheric aerosol geoengineering large ensemble (GLENS) project, which promotes the use of a unique model dataset, performed with the Community Earth System Model, with the Whole Atmosphere Community Climate Model as its atmospheric component (CESM1(WACCM)), to investigate global and regional impacts of geoengineering. The performed simulations were designed to achieve multiple simultaneous climate goals, by strategically placing sulfur injections at four different locations in the stratosphere, unlike many earlier studies that targeted globally averaged surface temperature by placing injections in regions at or around the equator."

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26.05.2018

# New Publications

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Eastham, Sebastian D.; et al. (2018): Quantifying the impact of sulfate geoengineering on mortality from air quality and UV-B exposure

Eastham, Sebastian D.; Weisenstein, Debra K.; Keith, David W.; Barrett, Steven R.H. (2018): Quantifying the impact of sulfate geoengineering on mortality from air quality and UV-B exposure. In Atmospheric Environment. DOI: 10.1016/j.atmosenv.2018.05.047.

"Using a chemistry-transport model, we quantify the steady-state response of three public health risks to 1 °C global mean surface cooling. We separate impacts into those which are “radiative forcing-driven”, associated with climate change “reversal” through modification of global radiative forcing, and those “direct impacts” associated uniquely with using sulfate geoengineering to achieve this. We find that the direct (non-radiative forcing driven) impact is a decrease in global mortality of ∼13,000 annually."

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26.05.2018

# Media

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Scientific American: World Needs to Set Rules for Geoengineering Experiments, Experts Say

"With interest in such research rising, and the risks uncertain, that conservation needs to start now"

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26.05.2018

# New Publications

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Bellamy, Rob (2018): Incentivize negative emissions responsibly

Bellamy, Rob (2018): Incentivize negative emissions responsibly. In Nat. Energy 534, p. 631. DOI: 10.1038/s41560-018-0156-6.

"Nation states need to incentivize negative emissions technologies if they are to take the decarbonization of whole energy systems seriously. This incentivization must account for public values and interests in relation to which technologies to incentivize, how they should be incentivized and how they should be governed once incentivized."

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26.05.2018

# Media

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E&E News: Experts want rules for global experiments before they happen

"Interest in governing experiments to alter Earth's climate is growing as scientists increasingly look at geoengineering to slow global warming."

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26.05.2018

# Media

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Carbon Brief: Negative emissions: Scientists meet in Sweden for first international conference

"This week, Gothenburg in Sweden played host to the first international conference on “negative emissions”. The three-day event brought together around 250 researchers at Chalmers University of Technology to discuss the different ways to remove CO2 from the atmosphere and store it on land, underground or in the oceans. The topics presented and debated ranged from “natural” solutions to the technologically advanced, through to the potential limitations and risks. Running parallel to the scientific discussions was a focus on the policy challenges."

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26.05.2018

# Media

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C2G2: Governments’ increasing interest in the governance of geoengineering

"On the 22nd of May we briefed Ambassadors and civil society organizations.  On the following day we held a more detailed workshop for their advisors. We invited leading experts from the UN system, academia and civil society to share their insights and perspectives. The full programme, as well as the supporting documents of the Briefing and of the Workshop, are available on UNEP’s website."

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26.05.2018

# Political Papers

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Honegger, Matthias; et al. (2018): Carbon Removal and Solar Geoengineering: Potential implications for delivery of the Sustainable Development Goals

Honegger, Matthias; Derwent, Henry; Harrison, Nicholas; Michaelowa, Axel; Schäfer, Stefan (2018): Carbon Removal and Solar Geoengineering: Potential implications for delivery of the Sustainable Development Goals. Carnegie Climate Geoengineering Governance Initiative (C2G2). New York.

"C2G2, together with three partner organisations, worked with experts from over 20 countries to establish what we know, and what we don’t know, about how Carbon Removal and Solar Geoengineering technologies might affect the SDGs. Research indicates that at least three quarters of the SDGs would likely be affected in some way if large-scale Carbon Removal or Solar Geoengineering were to be deployed. Should they prove feasible, effective and desirable, these technologies might contribute to limiting the impact of climate change on the SDGs."

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26.05.2018

# New Publications

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Sugiyama, Masahiro; et al. (2017): Next steps in geoengineering scenario research. Limited deployment scenarios and beyond

Sugiyama, Masahiro; Arino, Yosuke; Kosugi, Takanobu; Kurosawa, Atsushi; Watanabe, Shingo (2017): Next steps in geoengineering scenario research. Limited deployment scenarios and beyond. In Climate Policy 18 (6), pp. 681–689. DOI: 10.1080/14693062.2017.1323721.

" In light of concerns over risks, a newer set of scenarios is desirable, which represents both uncertainties and social choices more fully. Borrowing and extending lessons from recent literature on the new community climate scenario process, we envision a possible scenario-building process that combines interdisciplinary scholarship with the involvement of stakeholders and citizens. The resultant scenarios would better characterize uncertainties of, and policy choices for, solar geoengineering, and foster critical appraisal of its risks and benefits."

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24.05.2018

# Political Papers

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UNEP: Briefing on CE - Post-meeting Resources

UNEP meeting on CE held 22 May.

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