August 2017

04.08.2017

# New Publications

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Kleinschmitt, Christoph; et al. (2017): Sensitivity of the radiative forcing by stratospheric sulfur geoengineering to the amount and strategy of the SO2 injection studied with the LMDZ-S3A model

Kleinschmitt, Christoph; Boucher, Olivier; Platt, Ulrich (2017): Sensitivity of the radiative forcing by stratospheric sulfur geoengineering to the amount and strategy of the SO2 injection studied with the LMDZ-S3A model. In Atmos. Chem. Phys. Discuss., pp. 1–34. DOI: 10.5194/acp-2017-722.

"In this study we use the atmospheric general circulation model LMDZ with the sectional aerosol module S3A to determine how the forcing efficiency depends on the injected amount, the injection height and the spatio-temporal pattern of injection. We find that the forcing efficiency may decrease more drastically for larger SO2 injections than previously estimated. As a result, the net instantaneous radiative forcing does not exceed −2 W m−2 for continuous equatorial injections and it decreases (in absolute value) for the largest injection rates simulated (50 Tg S yr−1)."

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04.08.2017

# Media

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FCEA Blog: Ensuring That We Hear the Voices of the Vulnerable: Toward a Human Rights-Based Approach to Bioenergy and Carbon Capture and Storage

"Institutional governance mechanisms for climate engineering research and/or deployment should be structured to facilitate consideration of the potential impacts of BECCS on human rights."

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04.08.2017

# Media

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MIT Technolog Review: China Builds One of the World’s Largest Geoengineering Research Programs

"Backed by $3 million in federal funds, scientists are assessing how geoengineering would impact agriculture, glaciers, sea levels and more."

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03.08.2017

# New Publications

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Renforth, Phil; Henderson, Gideon (2017): Assessing ocean alkalinity for carbon sequestration

Renforth, Phil; Henderson, Gideon (2017): Assessing ocean alkalinity for carbon sequestration. In Rev. Geophys. 12 (49), p. 980. DOI: 10.1002/2016RG000533.

"Carbon storage in the ocean as bicarbonate ions (by increasing ocean alkalinity) has received very little attention. Yet recent work suggests sufficient capacity to sequester copious quantities of CO2. It may be possible to sequester hundreds of billions to trillions of tons of C without surpassing postindustrial average carbonate saturation states in the surface ocean. When globally distributed, the impact of elevated alkalinity is potentially small and may help ameliorate the effects of ocean acidification."

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03.08.2017

# Media

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Anthropocene: Scientists Make the Case for Spraying Saltwater Into Clouds to Help Cool the Planet

"In a new study, researchers at the University of Washington make the case for a geoengineering method known as marine cloud brightening. The technique calls for spraying saltwater into low-lying marine clouds, where they help create more clouds that reflect heat back into space. The UW scientists say in the journal Earth’s Future that conducting small, controlled marine cloud brightening experiments would provide unprecedented data to understand the effects of aerosols on cloud formation and the resulting reflection of sunlight."

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03.08.2017

# Media

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EcoWatch: Is Geoengineering the Answer to Limit Global Warming?

"But while most nations have yet to deliver on the plans they have made, and some nations have yet to even devise a plan, and one nation—the U.S.—has announced its withdrawal from the agreement, scientists have been looking for ways to reverse the potentially catastrophic warming and climate change that is now inevitable if the world continues with its "business as usual scenario.""

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03.08.2017

# Media

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Seeker: A Geoengineering ‘Cocktail’ Could Dull the Pain of Climate Change

"Combining multiple climate engineering strategies at the same time could dampen the impacts of global warming while avoiding loses in global precipitation levels."

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02.08.2017

# Political Papers

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Turkaly, Carolyn; et al. (2017): Establishing a Climate Engineering Research Clearinghouse

Turkaly, Carolyn; Nicholson, Simon; Livingston, David; Thompson, Michael (2017): Establishing a Climate Engineering Research Clearinghouse. Carnegie Endowment for International Peace; Forum for Climate Engineering Assessment. Washington, D.C.

"On July 18, 2017, the Forum for Climate Engineering Assessment and the Carnegie Endowment for International Peace convened a meeting of experts in CE science and governance, transparency, and information visualization to discuss designing, implementing, and maintaining a CE clearinghouse. A research registry, database, or clearinghouse is often cited as a necessary transparency mechanism in the governance of CE research. This workshop, building on a 2015 meeting on disclosure mechanisms for solar radiation management convened in Ottawa,1 such a clearinghouse from principle to practice."

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02.08.2017

# Media

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FCEA Blog: Building a Climate Engineering Clearinghouse

"On July 18, 2017, the Forum for Climate Engineering Assessment and the Carnegie Endowment for International Peace convened a meeting of experts in CE science and governance, transparency, and information visualization to discuss designing, implementing, and maintaining a CE clearinghouse. A research registry, database, or clearinghouse is often cited as a necessary transparency mechanism in the governance of CE research. This workshop, building on a 2015 meeting on disclosure mechanisms for solar radiation management convened in Ottawa was designed to move such a clearinghouse from principle to practice."

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01.08.2017

# Political Papers

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Climate Change Advisory Council (2017): Periodic Review Report 2017

Climate Change Advisory Council (2017): Periodic Review Report 2017.

Report on agriculture and land use including some discussion on negative emissions.

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