16.04.2018

# Media

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CBC: Capturing carbon and the cold from outer space: TED speakers explore how to save the planet

"Wilcox said there are about eight companies around the world that are beginning to capture carbon and harvest it for energy — including Calgary-based Carbon Engineering, which has a plant in Squamish, B.C. The costs to capture carbon are still too high to make the technology ubiquitous enough to have a meaningful impact, however."

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16.04.2018

# New Publications

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McLaren, Duncan P. (2018): In a broken world. Towards an ethics of repair in the Anthropocene

McLaren, Duncan P. (2018): In a broken world. Towards an ethics of repair in the Anthropocene. In The Anthropocene Review 12 (11), 205301961876721. DOI: 10.1177/2053019618767211.

"With the power to break Earth Systems comes responsibility to care for them, and arguably to repair them. Climate geoengineering is one possible approach. But repair is under-researched and underspecified in this context. In a first attempt to establish basic principles for the obligations of repair in the Anthropocene, five disciplines of repair are briefly reviewed: reconstruction of historic buildings; remediation of human bodies; restoration of ecosystems; reconfiguration of cultural materials and artifacts; and reconciliation of broken relationships. In each case ethical practices and debates are described to help identify key themes and challenges in understanding repair."

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16.04.2018

# New Publications

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Oliveira Garcia, Wagner de; et al. (2018): Increasing biomass demand enlarges negative forest nutrient budget areas in wood export regions

Oliveira Garcia, Wagner de; Amann, Thorben; Hartmann, Jens (2018): Increasing biomass demand enlarges negative forest nutrient budget areas in wood export regions. In Scientific reports 8 (1), p. 5280. DOI: 10.1038/s41598-018-22728-5.

"Energy production from biomass is one of the adopted strategies in different European countries to limit global warming to within the 1.5–2° targets after the 2015 UN climate agreement. This will motivate enhanced forest harvest rates and whole tree harvest to supply the increasing biomass demand. Negative nutrient budgets for certain timberland areas where geogenic nutrient supply cannot cope with harvesting rates will be one consequence. A spatially explicit analysis for a U.S. timberland area of 33,570 km2 reveals that for a minimum nutrient loss and supply scenario, negative nutrient budgets occur in 17, 20, 16, and almost 94% of the studied areas for Ca, K, Mg, and P, respectively."

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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

# Media

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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

# Media

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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

# Media

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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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