September 2019

30.09.2019

# Media

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Project Syndicate: A Climate Silver Bullet?

"Many of those who gathered in New York this week for the latest round of international climate summitry believe that as the world falls further behind in reducing greenhouse-gas emissions, other options such as solar geoengineering and carbon removal must be on the table. The problem is that techno-optimism can easily become an alibi for inaction."

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30.09.2019

# New Publications

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Cheng, W.; et al. (2019): Soil moisture and other hydrological changes in a stratospheric aerosol geoengineering large ensemble

Cheng, Wei; MacMartin, Douglas G.; Dagon, Katherine; Kravitz, Ben; Tilmes, Simone; Richter, Jadwiga H. et al.: Soil moisture and other hydrological changes in a stratospheric aerosol geoengineering large ensemble. In: Journal of Geophysical Research: Atmospheres 2019. DOI: 10.1029/2018JD030237.

" Here we investigate the impact of stratospheric aerosol geoengineering on the terrestrial hydrological cycle. We use the Geoengineering Large Ensemble (GLENS), which involves a 20‐member ensemble of simulations using the Community Earth System Model with the Whole Atmosphere Community Climate Model, in which sulfur dioxide (SO2) was injected into the stratosphere at four different locations, to maintain global mean surface temperature, and also the interhemispheric and equator‐to‐pole temperature gradients at values representative of 2020 (“baseline”) under the Representative Concentration Pathway 8.5 (RCP8.5)."

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30.09.2019

# Media

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Nature: Einstein in Britain, worlds on the ebb, and a new angle on climate engineering: Books in brief

"Barbara Kiser reviews five of the week’s best science picks."

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30.09.2019

# New Publications

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Branch, O.; et al. (2019): Deliberate enhancement of rainfall using desert plantations

Branch, Oliver; Wulfmeyer, Volker (2019): Deliberate enhancement of rainfall using desert plantations. In: PNAS 116 (38), S. 18841–18847. DOI: 10.1073/pnas.1904754116.

"We have demonstrated that large plantations do enhance rainfall in arid regions and identified the underlying process chain. By using this knowledge we have developed a global index to assess which deserts are most favorable for weather modification and discuss how rainfall impacts can be intensified using agricultural methods."

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30.09.2019

# New Publications

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Shindell, D.; et al. (2019): Climate and air-quality benefits of a realistic phase-out of fossil fuels

Shindell, Drew; Smith, Christopher J. (2019): Climate and air-quality benefits of a realistic phase-out of fossil fuels. In: Nature 573 (7774), S. 408–411. DOI: 10.1038/s41586-019-1554-z.

"Here we show that more realistic modelling scenarios do not produce a substantial near-term increase in either the magnitude or the rate of warming, and in fact can lead to a decrease in warming rates within two decades of the start of the fossil-fuel phase-out."

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30.09.2019

# Political Papers

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Climate Action Network: Position on SRM

"There is unanimous alignment among CAN membership that robust adaptation and mitigation actions are the first line solutions to climate change. SRM is not a substitute for either and should not be seen as climate action."

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30.09.2019

# Media

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Ökonomenstimme: How much CO2 may still enter the atmosphere and how much do we have to remove?

German article on the role of negative emissions technologies in climate politics.

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25.09.2019

# Media

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Global Climatestrike: There Is One Safe Geoengineering Option Guaranteed to Reduce CO2 in Our Atmosphere

"As it looks increasingly unlikely we're going to meet our climate mitigation targets, scientists have been investigating more and more extreme solutions, such as geoengineering. Examples include spraying huge amounts of sunlight-reflecting particles into the atmosphere, or dumping trillions of tons of fake snow onto glaciers to stabilise them. These ideas are untested, incredibly risky, and could end up causing more damage in unexpected ways."

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25.09.2019

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Futurism: Oxford Physicist: Geogineering Away Climate Change Won’t Work

"But geoengineering tech is unlikely to work as well as techno-optimists claim, according to University of Oxford physicist Raymond Pierrehumbert. He argues in the Bulletin of the Atomic Scientists that, when it comes to staving off climate catastrophe, there are no feasible alternatives to decarbonizing civilization."

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25.09.2019

# Media

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Inequality: Scientists Shouldn’t Listen to the Fossil Fuel Industry. Geoengineering is a Scam

"Oil and gas companies aren’t only polluting our air, water, and soil. They’ve injected themselves into our education system as well."

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