19.08.2019

# New Publications

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Holahan, R.; et al. (2019): Disentangling the rhetoric of public goods from their externalities: The case of climate engineering

Holahan, R.; Kashwan, P. (2019): Disentangling the rhetoric of public goods from their externalities: The case of climate engineering. In: Global Transitions 1, S. 132–140. DOI: 10.1016/j.glt.2019.07.001.

"Public goods are defined by the technical conditions of nonexclusion and nonrivalry. Nonetheless, public goods are frequently viewed in environmental policy and scholarly debates as providing strictly positive benefits (or, in the case of public ‘bads’, providing strictly negative costs). We provide a theoretical understanding of heterogeneous externalities produced by public goods to challenge this assumption, by highlighting the ways in which a single public good can simultaneously produce positive benefits for some and negative externalities for others."

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19.08.2019

# New Publications

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Rickels, W.; et al. (2019): (Mis)conceptions about modelling of negative emissions technologies

Rickels, W.; Merk, C.; Reith, F.; Keller, D.; Oschlies, A. (2019): (Mis)conceptions about modelling of negative emissions technologies. In: Environ. Res. Lett.

"Intentionally removing carbon from the atmosphere with negative emission technologies (NETs) will be important to achieve net-zero emissions by mid-century and to limit global warming to 2°C or even 1.5°C (IPCC, 2018). [...] Here, we show the results from an anonymous expert survey, including 32 Earth-System-Model (ESM) experts and 18 Integrated-Assessment-Model (IAM) experts, about the role of NETs in future climate policies and about how well the various technologies are represented in current models. We find that they strongly support the view that technology portfolios are requires to achieve negative emissions, however, the responses show that the number and range of NETs that can be assessed in IAMs is small and that IAMs and ESMs are rather applied to analyze technologies separately than in combination."

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12.08.2019

# New Publications

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Duan, L.; et al. (2019): Climate Response to Pulse Versus Sustained Stratospheric Aerosol Forcing

Duan, L.; Cao, L.; Bala, G.; Caldeira, K. (2019): Climate Response to Pulse Versus Sustained Stratospheric Aerosol Forcing. In: Geophys. Res. Lett., S. 1. DOI: 10.1029/2019GL083701.

"Solar geoengineering has been suggested as a potential means to counteract anthropogenic warming. Major volcanic eruptions have been used as natural analogues to large‐scale deployments of stratospheric aerosol geoengineering, yet difference in climate responses to these forcings remains unclear."

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12.08.2019

# New Publications

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Shi, X.; et al. (2019): Sorbents for Direct Capture of CO2 from Ambient Air

Shi, X.; Xiao, H.; Azarabadi, H.; Song, J.; Wu, X.; Chen, X.; Lackner, K. (2019): Sorbents for Direct Capture of CO2 from Ambient Air. In: Angewandte Chemie (International ed. in English). DOI: 10.1002/anie.201906756.

"The urgency to address global climate change induced by greenhouse gas emissions is growing. In particular, the rise in atmospheric CO2 levels is generating alarm. [...] This paper reviews major types of sorbents designed to capture CO2 from ambient air, which are categorized by sorption mechanism: physisorption, chemisorption, and moisture‐swing sorption."

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12.08.2019

# New Publications

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Wu, Z.; et al. (2019): Biochar can mitigate methane emissions by improving methanotrophs for prolonged period in fertilized paddy soils

Wu, Z.; Song, Y.; Shen, H.; Jiang, X.; Li, B.; Xiong, Z. (2019): Biochar can mitigate methane emissions by improving methanotrophs for prolonged period in fertilized paddy soils. In: Environmental Pollution 253, S. 1038–1046. DOI: 10.1016/j.envpol.2019.07.073.

"Biochar application to fertilized paddy soils has been recommended as an effective countermeasure to mitigate methane (CH4) emissions, but its mechanism and effective duration has not yet been adequately elucidated. A laboratory incubation experiment was performed to gain insight into the combined effects of fresh and six-year aged biochar on potential methane oxidation (PMO) in paddy soils with ammonium or nitrate-amendment."

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05.08.2019

# New Publications

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Flegal, J.; et al. (2019): Solar Geoengineering: Scientific, Legal, Ethical, and Economic Frameworks

Flegal, J.; Hubert, A.; Morrow, D.; Moreno-Cruz, J. (2019): Solar Geoengineering: Scientific, Legal, Ethical, and Economic Frameworks. In: Annu. Rev. Environ. Resour. 44 (1). DOI: 10.1146/annurev-environ-102017-030032.

"Solar geoengineering research in the social sciences and humanities has largely evolved in parallel with research in the natural sciences. In this article, we review the current state of the literature on the ethical, legal, economic, and social science aspects of this emerging area. We discuss issues regarding the framing and futures of solar geoengineering, empirical social science on public views and public engagement, the evolution of ethical concerns regarding research and deployment, and the current legal and economic frameworks and emerging proposals for the regulation and governance of solar geoengineering."

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05.08.2019

# New Publications

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Galina, N.; et al. (2019): Evolution of carbon capture and storage by mineral carbonation. Data analysis and relevance of the theme

Galina, N.; Arce, G.; Ávila, I. (2019): Evolution of carbon capture and storage by mineral carbonation. Data analysis and relevance of the theme. In: Minerals Engineering 142, S. 105879. DOI: 10.1016/j.mineng.2019.105879.

"Mineral carbonation has enormous potential for carbon capture and storage (CCS). CO2 is a greenhouse gas that can be converted into environmentally stable products through mineral carbonation, which has been pointed out as the most promising technology to reduce CO2 emissions and environmental impacts generated therefrom."

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05.08.2019

# New Publications

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Jacobson, R.; et al. (2019): Opportunities for Carbon Dioxide Removal Within the United States Department of Agriculture

Jacobson, R.; Sanchez, D. (2019): Opportunities for Carbon Dioxide Removal Within the United States Department of Agriculture. In: Front. Clim. 1, S. 69. DOI: 10.3389/fclim.2019.00002.

"Farming and ranching communities in the United States sit at the front lines of climate change impacts and responses. In particular, terrestrial atmospheric carbon dioxide removal (CDR) can reduce climate change impacts while increasing resilience to extreme weather. Currently, many CDR technologies and strategies are still under research and development (R&D), and lack sufficient federal support to reach widespread deployment. Here, we provide an assessment of the United States Department of Agriculture's (USDA) existing programs and organizational structure, its capacity to support research and demonstration of CDR, and recommendations for expansion of these capabilities."

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05.08.2019

# New Publications

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Lin, M.; et al. (2019): An Experimental- and Simulation-Based Evaluation of the CO 2 Utilization Efficiency of Aqueous-Based Electrochemical CO 2 Reduction Reactors with Ion-Selective Membranes

Lin, M.; Han, L.; Singh, M.; Xiang, C. (2019): An Experimental- and Simulation-Based Evaluation of the CO 2 Utilization Efficiency of Aqueous-Based Electrochemical CO 2 Reduction Reactors with Ion-Selective Membranes. In: ACS Appl. Energy Mater. DOI: 10.1021/acsaem.9b00986.

"The CO2 utilization efficiency of three types of electrochemical CO2 reduction (CO2R) reactors by using different ion-selective membranes, including anion exchange membrane (AEM), cation exchange membrane (CEM), and bipolar membrane (BPM), was studied quantitatively via both experimental and simulation methods."

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05.08.2019

# New Publications

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Friedmann, J. (2019): Engineered CO2 Removal, Climate Restoration, and Humility

Friedmann, J. (2019): Engineered CO2 Removal, Climate Restoration, and Humility. In: Front. Clim. 1, S. 247. DOI: 10.3389/fclim.2019.00003.

"Over the past 200 years, humans have dramatically altered our global environmental envelope accidentally through uncontrolled greenhouse gas emissions. Humans have also developed the technology to both stop emitting greenhouse gases and ultimately to remove them from the atmosphere through a combination of natural and engineered pathways."

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