05.05.2016

# Media

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Geeks on Earth: Can Solar Geoengineering Be Part Of Responsible Climate Policy?

"There are a number of ideas for how people might intentionally alter the planet's climate system - an approach called geoengineering. One of the most frequently discussed ideas is solar geoengineering, blocking some of sun's energy by, for example, injecting tiny particles called sulfate aerosols into the atmosphere. But solar geoengineeering remains a controversial method of addressing climate change."

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28.04.2016

# New Publications

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Salamanca, F.; et al. (2016): Citywide Impacts of Cool Roof and Rooftop Solar Photovoltaic Deployment on Near-Surface Air Temperature and Cooling Energy Demand

Salamanca, F.; Georgescu, M.; Mahalov, A.; Moustaoui, M.; Martilli, A. (2016): Citywide Impacts of Cool Roof and Rooftop Solar Photovoltaic Deployment on Near-Surface Air Temperature and Cooling Energy Demand. In Boundary-Layer Meteorol. DOI 10.1007/s10546-016-0160-y.

"We conduct a suite of sensitivity experiments (with different coverage rates of cool roof and rooftop solar photovoltaic deployment) for a 10-day clear-sky extreme heat period over the Phoenix and Tucson metropolitan areas at high spatial resolution (1-km horizontal grid spacing). Results show that deployment of cool roofs and rooftop solar photovoltaic panels reduce near-surface air temperature across the diurnal cycle and decrease daily citywide cooling energy demand."

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28.04.2016

# Media

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BBC: How a giant space umbrella could stop global warming

"Our rapidly warming world could cause serious problems for civilisation in the decades to come. But could a giant space umbrella help cool down our planet? BBC Future investigates."

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28.04.2016

# Media

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Grist: Could a giant umbrella made of tiny robots save us from climate chaos?

"We might be able to stop the Earth from overheating by shooting 16 trillion small robots into space to form a huge sunshade, says astronomer Roger Angel. A better idea would be to just stop burning fossil fuels. But since we’re not doing so well on that front, scientists are cooking up various geoengineering scenarios that they say could help us avoid the worst impacts of climate change."

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23.04.2016

# Projects

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Project: Solar Radiation Management: Foresight for Governance (SRM4G)

About the foresight workshops by IASS and Foresight Inteligence. "SRM4G is the latest in a growing number of scenario development exercises on the topic of climate engineering (previous examples include Milkoreit et al. 2011; Banerjee et al. 2013; Bellamy & Healey 2014; Boettcher et al. 2015). One of the longest-running scenario projects of its kind in the field, it has arguably produced the most detailed results."

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18.04.2016

# New Publications

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Mengis, Nadine; et al. (2016): Assessing climate impacts and risks of ocean albedo modification in the Arctic

Mengis, Nadine; Martin, T.; Keller, David P.; Oschlies, Andreas (2016): Assessing climate impacts and risks of ocean albedo modification in the Arctic. In J. Geophys. Res. Oceans. DOI 10.1002/2015JC011433.

"This study assesses climate impacts and risks of idealized Arctic Ocean albedo modification (AOAM), a proposed climate engineering method, during transient climate change simulations with varying representative concentration pathway (RCP) scenarios. We find no potential for reversing trends in all assessed Arctic climate metrics under increasing atmospheric CO2 concentrations."

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13.04.2016

# Media

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Eureka Street: Sulphur sunshade is a stupid pollution solution

"It's a credo of consumer capitalism: never address the cause when you can create an industry treating the symptoms."

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13.04.2016

# New Publications

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Kärcher, B. (2016): The importance of contrail ice formation for mitigating the climate impact of aviation

Kärcher, B. (2016): The importance of contrail ice formation for mitigating the climate impact of aviation. In J. Geophys. Res. Atmos., pp. n/a-n/a. DOI 10.1002/2015JD024696.

CE relevant study on cirrus cloud reduction. "The improved scientific understanding of initial ice formation processes allows atmospheric effects of mitigation options related to contrail cirrus to be investigated in unprecedented detail, especially those associated with the use of alternative aviation fuels. This study will enable a leap forward toward more reliable simulations addressing global climatic effects of contrail-induced cloudiness."

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12.04.2016

# New Publications

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Xia, Y.; Hu, Y.; Huang, Y. (2016): Strong modification of stratospheric ozone forcing by cloud and sea ice adjustments

Xia, Y.; Hu, Y.; Huang, Y. (2016): Strong modification of stratospheric ozone forcing by cloud and sea ice adjustments. In Atmos. Chem. Phys. Discuss., pp. 1–20. DOI 10.5194/acp-2016-175.

"We investigate the climatic impact of stratospheric ozone recovery (SOR) with a focus on the surface temperature change in atmosphere-slab-ocean coupled climate simulations. We find that although SOR would cause significant surface warming (global mean: 0.2 K) in a climate free of clouds and sea-ice, it may result in surface cooling (−0.06 K) in the real climate. The results here are especially interesting in that the stratosphere-adjusted radiative forcing is positive in both cases."

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19.03.2016

# New Publications

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Sargoni, Janine (2016): The Best of Both Worlds: Maximising the Legitimacy of the EU’s Regulation of Geoengineering Research

Sargoni, Janine (2016): The Best of Both Worlds: Maximising the Legitimacy of the EU’s Regulation of Geoengineering Research. In European Journal of Risk Regulation 7 (1), pp. 87–108.

"This paper suggests how the regulation of Solar Radiation Management (SRM) field research in Europe could be designed to maximise the possibility of securing legitimacy. It argues that legitimacy is maximised when regulatory frameworks are legal, and also responsive, flexible, deliberative and inclusive."

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