08.05.2018

# New Publications

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Reynolds, Jesse (2018): Governing Experimental Responses. Negative Emissions Technologies and Solar Climate Engineering

Reynolds, Jesse (2018): Governing Experimental Responses. Negative Emissions Technologies and Solar Climate Engineering. In Andrew Jordan, Dave Huitema, Harro van Asselt (Eds.): Governing Climate Change. Cambridge: Cambridge University Press, 285-302.

"This chapter places the governance of climate engineering in a polycentric governance conceptual framework. Following an introduction to climate engineering proposals and their governance needs, I discuss existing climate engineering governance. The chapter then explores the extent to which climate engineering governance is polycentric, prospects for its future polycentricity and what – if anything – this implies for climate governance more generally."

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27.04.2018

# New Publications

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Davies, Philip A.; et al. (2018): Desalination as a Negative Emissions Technology

Davies, Philip A.; Yuan, Qingchun; Richter, Renaud Charles de (2018): Desalination as a Negative Emissions Technology. In Environ. Sci.: Water Res. Technol. DOI: 10.1039/C7EW00502D.

"In this study, we propose treating desalination reject brine by electrolysis to form Mg(OH)2 and thus absorb CO2 via the oceans. The energy and water penalties associated with the electrolysis are calculated as 1.8 GJ/tCO2 and 13.7 m3/tCO2 respectively, making it an interesting option in comparison with some other types of NET. However, NET-modification more than doubles the specific energy consumption of a reverse-osmosis desalination plant. It is concluded that NET-desalination has potential to contribute to CDR in arid countries (especially if solar energy is used) thus helping to meet Intended Nationally Determined Contributions (INDCs) following the COP21 summit."

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24.04.2018

# Media

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phys.org: Carbon capture could be a financial opportunity for US biofuels

"There's really no scenario that meets the world's climate goals without negative emissions," said Katharine Mach, a senior research scientist at Stanford's School of Earth, Energy and Environmental Sciences. "But most technologies for carbon removal are immature, largely unavailable or expensive."

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05.04.2018

# New Publications

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Vaughan, Naomi E.; et al. (2018): Evaluating the use of biomass energy with carbon capture and storage in low emission scenarios

Vaughan, Naomi E.; Gough, Clair; Mander, Sarah; Littleton, Emma W.; Welfle, Andrew; Gernaat, David E. H. J.; van Vuuren, Detlef P. (2018): Evaluating the use of biomass energy with carbon capture and storage in low emission scenarios. In Environ. Res. Lett. 13 (4), p. 44014. DOI: 10.1088/1748-9326/aaaa02.

"Here, we explore the use of BECCS technologies in a reference scenario and three low emission scenarios generated by an integrated assessment model (IMAGE). Using these scenarios we investigate the feasibility of key implicit and explicit assumptions about these BECCS technologies, including biomass resource, land use, CO2 storage capacity and carbon capture and storage (CCS) deployment rate. In these scenarios, we find that half of all global CO2 storage required by 2100 occurs in USA, Western Europe, China and India, which is compatible with current estimates of regional CO2 storage capacity."

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14.03.2018

# Media

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E&E News: Models assume we'll cover Earth in trees. That's a problem

"The farmland of central Illinois might rarely be at the forefront of controversial climate action — but its moment arrived last spring when a Decatur-based ethanol plant became one of the first of its kind to launch an ambitious strategy to combat global warming. It combines the production of biofuel with a special technology designed to capture the facility's carbon dioxide emissions. It's a fledgling version of a much bigger geoengineering strategy that some experts hope could reduce global emissions by removing carbon dioxide from the atmosphere. It's known as "negative emissions.""

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09.03.2018

# New Publications

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Mintenig, Jana; et al. (2017): The Role of Bioenergy and Carbon Capture and Storage (BECCS) in the Case of Delayed Climate Policy – Insights from Cost-Risk Analysis

Mintenig, Jana; Khabbazan, Mohammad M.; Held, Hermann (2017): The Role of Bioenergy and Carbon Capture and Storage (BECCS) in the Case of Delayed Climate Policy – Insights from Cost-Risk Analysis. In Earth Syst. Dynam. Discuss., pp. 1–30. DOI: 10.5194/esd-2017-117.

"This study closes the loop by evaluating the impact of the technology option BECCS (Bioenergy and Carbon Capture and Storage) in light of delayed climate policy under CRA. The work is conducted using the Integrated Assessment Model MIND (Model of Investment and Technological Development). This interplay creates the following insights: An inclusion of BECCS avoids corner solutions that were previously identified for delay scenarios, yielding a larger window of opportunity for action to mitigate climate change. Moreover, it postpones mitigation efforts into the future and removes the pressure to shut down fossil fuel use immediately."

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09.03.2018

# New Publications

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Eisaman, Matthew D.; et al. (2018): Indirect ocean capture of atmospheric CO2. Part II. Understanding the cost of negative emissions

Eisaman, Matthew D.; Rivest, Jessy L.B.; Karnitz, Stephen D.; Lannoy, Charles-François de; Jose, Arun; DeVaul, Richard W.; Hannun, Kathy (2018): Indirect ocean capture of atmospheric CO2. Part II. Understanding the cost of negative emissions. In International Journal of Greenhouse Gas Control. DOI: 10.1016/j.ijggc.2018.02.020.

"An analysis was performed of the economic feasibility of a novel platform of candidate NETs – indirect ocean capture (IOC) – through industry-validated economic and chemical process modeling supported by inputs from a prototype system. This manuscript details the development of a high-fidelity estimate of the cost of avoided CO2 emissions from this NET by coupling scaled experiments to economic analyses. For the lowest-cost scenario of co-location with a desalination plant, a likely cost of $604 per metric ton of avoided CO2 (tCO2) was found, and a best-case cost of $373/tCO2."

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02.03.2018

# New Publications

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Muri, Helene (2018): The role of large - scale BECCS in the pursuit of the 1.5°C target – an Earth system model perspective

Muri, Helene (2018): The role of large - scale BECCS in the pursuit of the 1.5°C target – an Earth system model perspective. In Environ. Res. Lett. DOI: 10.1088/1748-9326/aab324.

"Here, the potential of large-scale BECCS deployment in contributing towards the 1.5ºC global warming target is evaluated using an Earth system model, as well as associated climate responses and carbon cycle feedbacks. The geographical location of the bioenergy feedstock is shown to be key to the success of such measures in the context of temperature targets. Although net negative emissions were reached sooner, by ~6 years, and scaled up, land use change emissions and reductions in forest carbon sinks outweigh these effects in one scenario."

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05.02.2018

# New Publications

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Keller, David P. (2018): Marine Climate Engineering

Keller, David P. (2018): Marine Climate Engineering. In Markus Salomon, Till Markus (Eds.): Handbook on Marine Environment Protection. Science, Impacts and Sustainable Management. 1st edition 2018. Cham: Springer International Publishing, pp. 261–276.

"In this chapter an overview is given of the proposed climate engineering methods that involve the direct manipulation of marine systems. This includes methods that enhance the ocean’s natural physical, chemical, and biological CO2 sequestration pathways, as well as purely technical ones that either use the ocean as a carbon storage reservoir or alter it’s properties to affect the Earth’s radiation budget."

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24.01.2018

# New Publications

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Stoy, Paul C.; et al. (2018): Opportunities and Trade-offs among BECCS and the Food, Water, Energy, Biodiversity, and Social Systems Nexus at Regional Scales

Stoy, Paul C.; Ahmed, Selena; Jarchow, Meghann; Rashford, Benjamin; Swanson, David; Albeke, Shannon et al. (2018): Opportunities and Trade-offs among BECCS and the Food, Water, Energy, Biodiversity, and Social Systems Nexus at Regional Scales. In BioScience 8, p. 81. DOI: 10.1093/biosci/bix145.

"Here, we present an interdisciplinary research framework to examine the trade-offs as well as the opportunities among BECCS scenarios and FWEBS on regional scales using the Upper Missouri River Basin (UMRB) as a case study. We describe the physical, biological, and social attributes of the UMRB, and we use grassland bird populations as an example of how biodiversity is influenced by energy transitions, including BECCS. We then outline a “conservation” BECCS strategy that incorporates societal values and emphasizes biodiversity conservation."

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