April 2018

16.04.2018

# Media

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Industry Leaders: How can we lower Earth’s rising temperature?

"So what are we doing to save the humanity from this irreversible damage? After an exhaustive study on climate change phenomenon, researchers have suggested two parallel options. The first option is to extract the immense carbon dioxide chuck from the atmosphere. The other one is to reflect a little sunlight back into space to cool down Earth’s rising temperature."

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16.04.2018

# New Publications

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Séférian, Roland; et al. (2018): Constraints on biomass energy deployment in mitigation pathways. The case of water scarcity

Séférian, Roland; Rocher, Matthias; Guivarch, Celine; Colin, Jeanne (2018): Constraints on biomass energy deployment in mitigation pathways. The case of water scarcity. In Environ. Res. Lett. DOI: 10.1088/1748-9326/aabcd7.

"Here, we assess climate constraints relative to water scarcity in response to the global deployment of BECCS. To this end, we confront results from an Earth system model (ESM) and an Integrated assessment model (IAM) under an array of 25 stringent mitigation pathways. These pathways are compatible with the Paris Agreement long-term temperature goal and with cumulative carbon emissions ranging from 230 Pg C and 300 Pg C from January 1st onwards. "

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16.04.2018

# New Publications

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Preston, Christopher J. (2018): The synthetic age. Outdesigning evolution, resurrecting species, and reengineering our world

Preston, Christopher J. (2018): The synthetic age. Outdesigning evolution, resurrecting species, and reengineering our world. Cambridge, Massachusetts: The MIT Press.

"A world designed by engineers and technicians means the birth of the planet's first Synthetic Age. Preston describes a range of technologies that will reconfigure Earth's very metabolism: nanotechnologies that can restructure natural forms of matter; “molecular manufacturing” that offers unlimited repurposing; synthetic biology's potential to build, not just read, a genome; “biological mini-machines” that can outdesign evolution; the relocation and resurrection of species; and climate engineering attempts to manage solar radiation by synthesizing a volcanic haze, cool surface temperatures by increasing the brightness of clouds, and remove carbon from the atmosphere with artificial trees that capture carbon from the breeze."

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16.04.2018

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Ecologist: I'm skeptical of the synthetic age, says ecology philosopher Christopher Preston

"Christopher Preston, the environmental philosopher, has observed how human beings have transformed every aspect of the environment, leading to a new era in natural history. His book The Synthetic Age suggests we human beings make conscious decisions about how we influence this impending future."

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16.04.2018

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EOS: Tailoring Aerosol Injections to Achieve Desired Climate Effects

"Two-dimensional simulations of sulfate aerosol injections suggest that solar geoengineering projects can be customized to maximize solar reflection and help achieve potential climate objectives."

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16.04.2018

# New Publications

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Russotto, Rick D.; Ackerman, Thomas P. (2018): Changes in clouds and thermodynamics under solar geoengineering and implications for required solar reduction

Russotto, Rick D.; Ackerman, Thomas P. (2018): Changes in clouds and thermodynamics under solar geoengineering and implications for required solar reduction. In Atmos. Chem. Phys. Discuss., pp. 1–32. DOI: 10.5194/acp-2018-345.

"The amount of solar constant reduction required to offset the global warming from an increase in atmospheric CO2 concentration is an interesting question with implications for assessing the feasibility of solar geoengineering scenarios and for improving our theoretical understanding of Earth's climate response to greenhouse gas and solar forcings. This study investigates this question by analyzing the results of 11 coupled atmosphere-ocean global climate models running Experiment G1 of the Geoengineering Model Intercomparison Project, in which CO2 concentrations are abruptly quadrupled and the solar constant is simultaneously reduced by an amount tuned to maintain top of atmosphere energy balance and preindustrial global mean temperature."

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16.04.2018

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EGU Blog: Climate migration needs to be predicted and planned now. Geoengineering can slow down sea level rise but could also lead to international conflicts

"Each month, Jesse Zondervan picks his favourite posts from geoscience and development blogs/news which cover the geology for global development interest. Here’s a round-up of Jesse’s selections for the last month"

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15.04.2018

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ASME: Can Engineering Change Our Climate for the Better?

"Climate engineering is the process of designing large-scale systems that have the potential to control climate and reduce the impact of climate change. This is a highly controversial topic because of the complexity of the systems involved and the possible negative effects upon the environment and human populations." (See also part 2)

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15.04.2018

# New Publications

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van Vuuren, Detlef P.; et al. (2018): Alternative pathways to the 1.5 °C target reduce the need for negative emission technologies

van Vuuren, Detlef P.; Stehfest, Elke; Gernaat, David E. H. J.; van den Berg, Maarten; Bijl, David L.; Boer, Harmen Sytze de et al. (2018): Alternative pathways to the 1.5 °C target reduce the need for negative emission technologies. In Nature Climate change 5, p. 519. DOI: 10.1038/s41558-018-0119-8.

"The question arises whether alternative deep mitigation pathways exist. Here, using an integrated assessment model, we explore the impact of alternative pathways that include lifestyle change, additional reduction of non-CO2 greenhouse gases and more rapid electrification of energy demand based on renewable energy. Although these alternatives also face specific difficulties, they are found to significantly reduce the need for CDR, but not fully eliminate it. The alternatives offer a means to diversify transition pathways to meet the Paris Agreement targets, while simultaneously benefiting other sustainability goals."

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15.04.2018

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Carbon Brief: World can limit global warming to 1.5C ‘without BECCS’

"It is possible to limit warming to 1.5C above pre-industrial temperatures without using negative emissions from bioenergy with carbon capture and storage (BECCS), new research says."

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