20.05.2019

# New Publications

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Amundson, R., & Biardeau, L. (2018). Opinion: Soil carbon sequestration is an elusive climate mitigation tool

Amundson, R., & Biardeau, L. (2018). Opinion: Soil carbon sequestration is an elusive climate mitigation tool. Proceedings of the National Academy of Sciences, 115(46), 11652–11656. https://doi.org/10.1073/pnas.1815901115

"Through changed agricultural techniques, it is proposed, much of this carbon can be restored to domesticated soils and thus serve as a significant tool to mitigate climate change, providing a wider timeframe for society to decarbonize. Unfortunately, both cultural and scientific challenges suggest that this proposal is overly optimistic and inherently flawed."

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20.05.2019

# New Publications

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Loisel, J., et al. (2019). Soils can help mitigate CO2 emissions, despite the challenges

Loisel, J., Casellas Connors, J. P., Hugelius, G., Harden, J. W., & Morgan, C. L. (2019). Soils can help mitigate CO2 emissions, despite the challenges. Proceedings of the National Academy of Sciences. Advance online publication. https://doi.org/10.1073/pnas.1900444116

"Furthermore, we assert that current agricultural practices are contingent upon, and will be shaped by, transitions in the global energy systems. Therefore, continued soil-restoration efforts may not only contribute to climate mitigation, but may also play a role in supporting energy transitions as well as climate adaptation."

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15.05.2019

# New Publications

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Xiang, Yanlei; et al. (2019): Study on the biomass-based integrated gasification combined cycle with negative CO2 emissions under different temperatures and pressures

Xiang, Yanlei; Cai, Lei; Guan, Yanwen; Liu, Wenbin; He, Tianzhi; Li, Juan (2019): Study on the biomass-based integrated gasification combined cycle with negative CO2 emissions under different temperatures and pressures. In Energy. DOI: 10.1016/j.energy.2019.05.011.

"The biomass gasification combined cycle and oxy-fuel combustion are integrated. The effect of gasification pressure and temperature on system performance is studied. The thermodynamic analysis of each subsystem is carried out to evaluate the system. The negative CO2 emissions are achieved with a competitive efficiency."

 

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13.05.2019

# New Publications

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Grieger, Khara D.; et al. (2019): Emerging risk governance for stratospheric aerosol injection as a climate management technology

Grieger, Khara D.; Felgenhauer, Tyler; Renn, Ortwin; Wiener, Jonathan; Borsuk, Mark (2019): Emerging risk governance for stratospheric aerosol injection as a climate management technology. In Environ Syst Decis 103 (46), pp. 1–12. DOI: 10.1007/s10669-019-09730-6.

"Robust governance strategies are needed to manage the many potential benefits, risks, and uncertainties related to SAI. This perspective reviews the International Risk Governance Council (IRGC)’s guidelines for emerging risk governance (ERG) as an approach for responsible consideration of SAI, given the IRGC’s experience in governing other more conventional risks. We examine how the five steps of the IRGC’s ERG guidelines would address the complex, uncertain, and ambiguous risks presented by SAI."

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12.05.2019

# New Publications

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Tanzer, Samantha Eleanor; Ramírez, Andrea (2019): When are negative emissions negative emissions?

Tanzer, Samantha Eleanor; Ramírez, Andrea (2019): When are negative emissions negative emissions? In: Energy Environ. Sci. 12 (4), S. 1210–1218. DOI: 10.1039/C8EE03338B.

"This paper highlights inconsistencies in negative emission accounting in recent NET literature, focusing on the influence of system boundary selection. A quantified step-by-step example provides a clear picture of the impact of system boundary choices on the estimated emissions of a NET system."

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08.05.2019

# New Publications

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Low, Sean; Schäfer, Stefan (2019): Tools of the trade. Practices and politics of researching the future in climate engineering

Low, Sean; Schäfer, Stefan (2019): Tools of the trade. Practices and politics of researching the future in climate engineering. In: Sustain Sci 8 (1), S. 898. DOI: 10.1007/s11625-019-00692-x.

"We take a systemic and synthesizing view of some of the (inter)disciplinary methods by which these futures are derived: climate and integrated assessment modeling, ‘deductive’ modes of social science inquiry, deliberative stakeholder engagement, and foresight-based scenarios. We speak to the epistemologies, objectives, and user communities surrounding these research practices, highlighting that different modes of constructing and interpreting evidence about an unformed future yield different kinds of results and signals for actions to be taken. We show how different methods for exploring ‘futures’ form an evolving history of how the risks of CE have been assessed (or constructed), and conclude by echoing calls for a stronger shared understanding of the practices and politics that underpin future-oriented research."

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05.05.2019

# New Publications

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Mašek, O.; et al. (2019): Potassium doping increases biochar carbon sequestration potential by 45%, facilitating decoupling of carbon sequestration from soil improvement

Mašek, O.; Buss, W.; Brownsort, P.; Rovere, M.; Tagliaferro, A.; Zhao, L. et al. (2019): Potassium doping increases biochar carbon sequestration potential by 45%, facilitating decoupling of carbon sequestration from soil improvement. In: Scientific reports 9 (1), S. 5514. DOI: 10.1038/s41598-019-41953-0.

"Negative emissions technologies offer an important tool to limit the global warming to <2 °C. Biochar is one of only a few such technologies, and the one at highest technology readiness level. Here we show that potassium as a low-concentration additive in biochar production can increase biochar’s carbon sequestration potential; by up to 45% in this study."

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05.05.2019

# New Publications

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Dittmeyer, R.; et al. (2019): Crowd oil not crude oil

Dittmeyer, R.; Klumpp, M.; Kant, P.; Ozin, G. (2019): Crowd oil not crude oil. In: Nat Comms 10 (1), S. 1818. DOI: 10.1038/s41467-019-09685-x.

"Climate change represents an existential, global threat to humanity, yet its delocalized nature complicates climate action. Here, the authors propose retrofitting air conditioning units as integrated, scalable, and renewable-powered devices capable of decentralized CO2 conversion and energy democratization."

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05.05.2019

# New Publications

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Lee, H.; et al. (2019): The response of permafrost and high latitude ecosystems under large scale stratospheric aerosol injection and its termination

Lee, H.; Ekici, A.; Tjiputra, J.; Muri, H.; Chadburn, S.; Lawrence, D.; Schwinger, J. (2019): The response of permafrost and high latitude ecosystems under large scale stratospheric aerosol injection and its termination. In: Earth's Future. DOI: 10.1029/2018EF001146.

"Climate engineering arises as one of the potential methods that could contribute to meeting the 1.5oC global warming target agreed under the Paris Agreement. We examine how permafrost and high latitude vegetation respond to large scale implementation of climate engineering. Specifically, we explore the impacts of applying the solar radiation management method of stratospheric aerosol injections (SAI) on permafrost temperature and the global extent of near‐surface permafrost area."

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29.04.2019

# New Publications

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Lenton, A.; et al. (2019): Foresight must guide geoengineering research and development

Lenton, A.; Boyd, P.; Thatcher, M.; Emmerson, K. (2019): Foresight must guide geoengineering research and development. In: Nature Climate change 9 (5), S. 342. DOI: 10.1038/s41558-019-0467-z.

"Large-scale climate geoengineering will probably be required to limit warming to well below 2 °C, in line with the 2015 Paris Agreement. While geoengineering has long been included in the development of many (future) low-carbon emissions pathways, key questions remain about the efficacy and ability of such climate intervention to fulfil its anticipated role in limiting warming. As such, the social license for geoengineering has not been granted for research using unbounded large-scale experiments, never mind full-scale deployment."

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