24.06.2019

# New Publications

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Gunderson, R.; et al. (2019): Materialized ideology and environmental problems: The cases of solar geoengineering and agricultural biotechnology

Gunderson, R.; Stuart, D.; Petersen, B. (2019): Materialized ideology and environmental problems: The cases of solar geoengineering and agricultural biotechnology. In: European Journal of Social Theory 57 (3), 136843101983925. DOI: 10.1177/1368431019839252.

"This article expands upon the notion of ideology as a material phenomenon, usually in the form of institutionalized, taken-for-granted practices. It draws on Herbert Marcuse and related thinkers to conceptualize technological solutions to environmental problems as materialized ideological responses to social-ecological contradictions, which, by concealing these contradictions, reproduce existing social conditions."

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24.06.2019

# New Publications

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Horton, J.; et al. (2019): Multilateral parametric climate risk insurance: a tool to facilitate agreement about deployment of solar geoengineering?

Horton, J.; Keith, D. (2019): Multilateral parametric climate risk insurance: a tool to facilitate agreement about deployment of solar geoengineering? In: Climate Policy 19 (7), S. 820–826. DOI: 10.1080/14693062.2019.1607716.

"States will disagree about deployment of solar geoengineering, technologies that would reflect a small portion of incoming sunlight to reduce risks of climate change, and most disagreements will be grounded in conflicting interests. States that object to deployment will have many options to oppose it, so states favouring deployment will have a powerful incentive to meet their objections. Objections rooted in opposition to the anticipated unequal consequences of deployment may be met through compensation, yet climate policy is inhospitable to compensation via liability. We propose that multilateral parametric climate risk insurance might be a useful tool to facilitate agreement on solar geoengineering deployment."

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17.06.2019

# New Publications

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Asayama, S.; et al. (2019): Engineering climate debt: temperature overshoot and peak-shaving as risky subprime mortgage lending

Asayama, S.; Hulme, M. (2019): Engineering climate debt: temperature overshoot and peak-shaving as risky subprime mortgage lending. In: Climate Policy 33 (3), p. 1–10. DOI: 10.1080/14693062.2019.1623165.

"Whilst some view optimistically the strategic interdependence between SRM and CDR, we argue that this strategy comes with a risk of escalating ‘climate debt’. We explain our position using the logic of debt and the analogy of subprime mortgage lending. In overshoot and peak-shaving scenarios, the role of CDR and SRM is to compensate for delayed mitigation, placing the world in a double debt: ‘emissions debt’ and ‘temperature debt’."

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16.06.2019

# New Publications

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Hemingway, J.; et al. (2019): Mineral protection regulates long-term global preservation of natural organic carbon

Hemingway, J.; Rothman, D.; Grant, K.; Rosengard, S.; Eglinton, T.; Derry, L.; Galy, V. (2019): Mineral protection regulates long-term global preservation of natural organic carbon. In: Nature 570 (7760), S. 228–231. DOI: 10.1038/s41586-019-1280-6.

"The balance between photosynthetic organic carbon production and respiration controls atmospheric composition and climate. [...] Here we present a global dataset of the distributions of organic carbon activation energy and corresponding radiocarbon ages in soils, sediments and dissolved organic carbon. We find that activation energy distributions broaden over time in all mineral-containing samples."

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11.06.2019

# New Publications

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Sorcar, S.; et al. (2019): CO 2, water, and sunlight to hydrocarbon fuels: a sustained sunlight to fuel (Joule-to-Joule) photoconversion efficiency of 1%

Sorcar, S.; Hwang, Y.; Lee, J.; Kim, H.; Grimes, K.; Grimes, C. et al. (2019): CO 2, water, and sunlight to hydrocarbon fuels: a sustained sunlight to fuel (Joule-to-Joule) photoconversion efficiency of 1%. In: Energy Environ. Sci. 3, S. 664. DOI: 10.1039/C9EE00734B.

"If we wish to sustain our terrestrial ecosphere as we know it, then reducing the concentration of atmospheric CO2 is of critical importance. An ideal pathway for achieving this would be the use of sunlight to recycle CO2, in combination with water, into hydrocarbon fuels compatible with our current energy infrastructure."

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10.06.2019

# New Publications

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Queirós, A.; et al. (2019): Connected macroalgal‐sediment systems: blue carbon and food webs in the deep coastal ocean

Queirós, A.; Stephens, N.; Widdicombe, S.; Tait, K.; McCoy, S.; Ingels, J. et al. (2019): Connected macroalgal‐sediment systems: blue carbon and food webs in the deep coastal ocean. In: Ecol Monogr 10, e01366. DOI: 10.1002/ecm.1366.

"Macroalgae drive the largest CO2 flux fixed globally by marine macrophytes. Most of the resulting biomass is exported through the coastal ocean as detritus and yet almost no field measurements have verified its potential net sequestration in marine sediments. "

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10.06.2019

# New Publications

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Sanchez, D.; et al. (2019): UC experts can lead on carbon dioxide removal

Sanchez, D.; Houlton, B.; Silver, W. (2019): UC experts can lead on carbon dioxide removal. In: Calif Agr 73 (2), S. 69–72. DOI: 10.3733/ca.2019a0009.

"Through technology demonstration and policy engagement, UC ANR specialists, advisors and AES faculty can support California's ambitions to remove CO2 from the atmosphere."

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31.05.2019

# New Publications

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Martin, M.; et al. (2019): Mitigation potential and environmental impact of centralized versus distributed BECCS with domestic biomass production in Great Britain

Martin, M.; Dowell, N. Mac et al. (2019): Mitigation potential and environmental impact of centralized versus distributed BECCS with domestic biomass production in Great Britain. In: GCB Bioenergy. DOI: 10.1111/gcbb.12630.

"New contingency policy plans are expected to be published by the United Kingdom government to set out urgent actions, such as carbon capture and storage, greenhouse gas removal, and the use of sustainable bioenergy to meet the greenhouse gas reduction targets of the 4th and 5th carbon budgets. In this study, we identify two plausible bioenergy production pathways for bioenergy with carbon capture and storage (BECCS) based on centralized and distributed energy systems to show what BECCS could look like if deployed by 2050 in Great Britain."

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31.05.2019

# New Publications

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Hemes, K.; et al. (2019): Assessing the carbon and climate benefit of restoring degraded agricultural peat soils to managed wetlands

Hemes, K.; Chamberlain, S.; Eichelmann, E.; Anthony, T.; Valach, A.; Kasak, K. et al. (2019): Assessing the carbon and climate benefit of restoring degraded agricultural peat soils to managed wetlands. In: Agricultural and Forest Meteorology 268, S. 202–214. DOI: 10.1016/j.agrformet.2019.01.017.

"Restoring degraded peat soils presents an attractive, but largely untested, climate change mitigation approach. Drained peat soils used for agriculture can be large greenhouse gas sources. [...] Here, we synthesize 36 site-years of continuous carbon dioxide and methane flux data from a mesonetwork of eddy covariance towers in the Sacramento-San Joaquin Delta in California, USA to compute carbon and greenhouse gas budgets for drained agricultural land uses and compare these to restored deltaic wetlands. We found that restored wetlands effectively sequestered carbon and halted soil carbon loss associated with drained agricultural land uses."

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31.05.2019

# New Publications

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Cabral, R.; et al. (2019): A synergistic approach for the simultaneous decarbonisation of power and industry via bioenergy with carbon capture and storage (BECCS)

Cabral, R.; Bui, M.; Mac Dowell, N. (2019): A synergistic approach for the simultaneous decarbonisation of power and industry via bioenergy with carbon capture and storage (BECCS). In: International Journal of Greenhouse Gas Control 87, S. 221–237. DOI: 10.1016/j.ijggc.2019.05.020.

"There is a need for a rapid and large scale decarbonisation to reduce CO2 emissions by 45% within 12 years. Thus, we propose a method that accelerates decarbonisation across multiple sectors via a synergistic approach with bioenergy with CCS (BECCS), which is able to remove 740 kg from air per MWh electricity generated."

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