16.12.2014

# Media

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Phys.org: Cost of cloud brightening for cooler planet revealed

"University of Manchester scientists have identified the most energy-efficient way to make clouds more reflective to the sun in a bid to combat climate change."

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16.12.2014

# Media

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International Business Times: Geo-engineering: Energy efficient method using salt water to cool planet identified

"A study into reversible geo-engineering method to offset rising global temperatures has narrowed in on an energy efficient method of cloud brightening. The "Rayleigh Jet" technique could help offset the effects of carbon emissions at the expense of 30 megawatts of energy."

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16.12.2014

# New Publications

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Kleidon, Axel; et al. (2014): The hydrological sensitivity to global warming and solar geoengineering derived from thermodynamic constraints

Kleidon, Axel; Kravitz, Ben; Renner, Maik (2014): The hydrological sensitivity to global warming and solar geoengineering derived from thermodynamic constraints. In Geophys. Res. Lett., pp. n/a. DOI 10.1002/2014GL062589.

"We derive analytic expressions of the transient response of the hydrological cycle to surface warming from the surface energy balance in which turbulent heat fluxes are constrained by the thermodynamic limit of maximum power."

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11.12.2014

# New Publications

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Manoussi, Vassiliki; Xepapadeas, Anastasios (2014): Cooperation and Competition in Climate Change Policies. Mitigation and Climate Engineering When Countries are Asymmetric

Manoussi, Vassiliki; Xepapadeas, Anastasios (2014): Cooperation and Competition in Climate Change Policies. Mitigation and Climate Engineering When Countries are Asymmetric. Fondazione Eni Enrico Mattei (FEEM) (FEEM Working Paper).

"We study a dynamic game of climate policy design in terms of emissions and solar radiation management (SRM) involving two heterogeneous regions or countries."

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08.12.2014

# New Publications

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Cairns, Rose C. (2014): Will Solar Radiation Management enhance global security in a changing climate?

Cairns, Rose C. (2014): Will Solar Radiation Management enhance global security in a changing climate? (CGG Working Papers, 016).

"This discussion paper will examine the interlinkages between climate change, solar radiation management and notions of security, proceeding in three stages."

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08.12.2014

# New Publications

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Baum, Seth D. (2014): The great downside dilemma for risky emerging technologies

Baum, Seth D. (2014): The great downside dilemma for risky emerging technologies. In Phys. Scr. 89 (12), p. 128004–128004. DOI 10.1088/0031-8949/89/12/128004.

"This article discusses the great downside dilemma posed by the decision of whether or not to use these technologies. The dilemma is: use the technology, and risk the downside of catastrophic failure, or do not use the technology, and suffer through life without it."

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18.11.2014

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ClickGreen: Real-life tests needed to find true viability of climate engineering

"Now, a team of researchers from the Harvard School of Engineering and Applied Sciences (SEAS) has outlined how a small-scale “stratospheric perturbation experiment” could work. By proposing, in detail, a way to take the science of geoengineering to the skies, they hope to stimulate serious discussion of the practice by policymakers and scientists."

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18.11.2014

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Harvard News: Adjusting Earth’s thermostat, with caution

"Harvard scientists say aspects of solar geoengineering can—and should—be tested without need for full-scale deployment"

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18.11.2014

# Media

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International Business Times: Controversial Plans to Slow Global Warming by Manipulating Atmosphere Reconsidered by Scientists

"Scientists are revisiting controversial propositions to manipulate the atmosphere and slow down the increase in temperatures on Earth by reflecting more of the sun's energy back into space. Researchers from Harvard School of Engineering and Applied Sciences (SEAS) are proposing a stratospheric perturbation experiment using small amounts of sulphuric acid to block sunlight."

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17.11.2014

# New Publications

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Parker, Andy (2014): Governing solar geoengineering research as it leaves the laboratory

Parker, Andy (2014): Governing solar geoengineering research as it leaves the laboratory. In Philosophical Transactions of the Royal Society 372 (2031). DOI 10.1098/rsta.2014.0173.

"As a piece of pragmatic policy analysis, this paper explores the practicalities and implications of demands for ‘governance before research’. It concludes that ‘governance before research’ is a desirable goal, but that a delay in experimentation—a moratorium—would probably be an ineffective and counterproductive way to achieve it."

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