11.05.2021

# New Publications

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Warszawski, Lila; et al. (2021): All options, not silver bullets, needed to limit global warming to 1.5°C: a scenario appraisal

Warszawski, Lila; Kriegler, Elmar; Lenton, Timothy M.; Gaffney, Owen; Jacob, Daniela; Klingenfeld, Daniel et al. (2021): All options, not silver bullets, needed to limit global warming to 1.5°C: a scenario appraisal. In Environ. Res. Lett. DOI: 10.1088/1748-9326/abfeec.

"We use a set of five parameters to bundle and characterise the mitigation levers employed in the SR1.5 1.5°C scenarios."

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11.05.2021

# New Publications

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Bhowmick, Mansi; et al. (2021): Response of the Indian summer monsoon to global warming, solar geoengineering and its termination

Bhowmick, Mansi; Mishra, Saroj Kanta; Kravitz, Ben; Sahany, Sandeep; Salunke, Popat (2021): Response of the Indian summer monsoon to global warming, solar geoengineering and its termination. In Sci Rep 11 (1), p. 9791. DOI: 10.1038/s41598-021-89249-6.

The response of the Indian Summer Monsoon (ISM) to global warming, solar geoengineering and its termination is examined using the multi-model mean of seven global climate model simulations from G2 experiment of the Geoengineering Model Intercomparison Project.

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11.05.2021

# New Publications

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Banerjee, Antara; et al. (2021): Robust winter warming over Eurasia under stratospheric sulfate geoengineering – the role of stratospheric dynamics

Banerjee, Antara; Butler, Amy H.; Polvani, Lorenzo M.; Robock, Alan; Simpson, Isla R.; Sun, Lantao (2021): Robust winter warming over Eurasia under stratospheric sulfate geoengineering – the role of stratospheric dynamics. In Atmos. Chem. Phys 21 (9), pp. 6985–6997. DOI: 10.5194/acp-21-6985-2021.

"We here investigate the proposed connection in the context of hypothetical future stratospheric sulfate geoengineering in the Geoengineering Large Ensemble simulations."

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11.05.2021

# New Publications

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Bach, Lennart T.; et al. (2021): Testing the climate intervention potential of ocean afforestation using the Great Atlantic Sargassum Belt

Bach, Lennart T.; Tamsitt, Veronica; Gower, Jim; Hurd, Catriona L.; Raven, John A.; Boyd, Philip W. (2021): Testing the climate intervention potential of ocean afforestation using the Great Atlantic Sargassum Belt. In Nat Comms 12 (1), p. 2556. DOI: 10.1038/s41467-021-22837-2.

"Here, we analyse the CDR potential of recent re-occurring trans-basin belts of the floating seaweed Sargassum in the (sub)tropical North Atlantic as a natural analogue for ocean afforestation. We show that two biogeochemical feedbacks, nutrient reallocation and calcification by encrusting marine life, reduce the CDR efficacy of Sargassum by 20–100%."

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10.05.2021

# New Publications

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Harrison, R. Giles; et al. (2021): Demonstration of a Remotely Piloted Atmospheric Measurement and Charge Release Platform for Geoengineering

Harrison, R. Giles; Nicoll, Keri A.; Tilley, Douglas J.; Marlton, Graeme J.; Chindea, Stefan; Dingley, Gavin P. et al. (2021): Demonstration of a Remotely Piloted Atmospheric Measurement and Charge Release Platform for Geoengineering. In Journal of Atmospheric and Oceanic Technology 38 (1), pp. 63–75. DOI: 10.1175/JTECH-D-20-0092.1.

"Electric charge is always present in the lower atmosphere. If droplets or aerosols become charged, their behavior changes, influencing collision, evaporation, and deposition. Artificial charge release is an unexplored potential geoengineering technique for modifying fogs, clouds, and rainfall. Central to evaluating these processes experimentally in the atmosphere is establishing an effective method for charge delivery."

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10.05.2021

# New Publications

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Simon Nicholson (2021): Carbon Removal and the Dangers of Extractivism

Simon Nicholson (2021): Carbon Removal and the Dangers of Extractivism. In John-Andrew McNeish, Judith Shapiro (Eds.): Our extractive age. Expressions of violence and resistance. Abingdon, Oxon, New York, NY: Routledge (Routledge studies of the extractive industries), pp. 189–203. Available online at https://www.taylorfrancis.com/chapters/oa-edit/10.4324/9781003127611-14/carbon-removal-dangers-extractivism-simon-nicholson.

"This chapter shows how the concept of hyper-extractivism can help us understand and guard against the troublesome potentials in large-scale carbon removal activities and in the policy consideration of carbon removal options, and in turn will shed light on the kinds of thorny choices that are forced on humanity at the height of the hyper-extractivist age."

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06.05.2021

# New Publications

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Irvine, Peter; et al. (2021): Expert judgements judgements on solar geoengineering research priorities and challenges

Irvine, Peter; Burns, Elizabeth; Caldeira, Ken; Keutsch, Frank; Tingley, Dustin; Keith, David (2021): Expert judgements judgements on solar geoengineering research priorities and challenges. Preprint. DOI: 10.31223/X5BG8C.

"We elicit judgements on natural science research priorities for solar geoengineering through a survey and in-person discussion with 72 subject matter experts, including two thirds of all scientists with ≥10 publications on the topic."

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06.05.2021

# New Publications

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McQueen, Noah; et al. (2021): A review of direct air capture (DAC): scaling up commercial technologies and innovating for the future

McQueen, Noah; Gomes, Katherine Vaz; McCormick, Colin; Blumanthal, Katherine; Pisciotta, Maxwell; Wilcox, Jennifer (2021): A review of direct air capture (DAC): scaling up commercial technologies and innovating for the future. In Prog. Energy 3 (3), p. 32001. DOI: 10.1088/2516-1083/abf1ce.

"This review article focuses on two distinctive, commercial DAC processes to bind with CO2: solid sorbents and liquid solvents."

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06.05.2021

# New Publications

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Tyka, Michael; et al. (2021): CO2 capture by pumping surface acidity to the deep ocean

Tyka, Michael; Platt, John; van Arsdale, Christopher (2021): CO2 capture by pumping surface acidity to the deep ocean. Preprint. DOI: 10.31223/X5TK60.

"Here we present a method which relies purely on the redistribution and dilution of acidity from a thin layer of the surface ocean to a thicker layer of deep ocean, with the aim of reducing surface acidification and accelerating the former carbonate homeostasis."

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06.05.2021

# New Publications

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Lenzi, Dominic (2021): On the Permissibility (Or Otherwise) of Negative Emissions

Lenzi, Dominic (2021): On the Permissibility (Or Otherwise) of Negative Emissions. In Ethics, Policy & Environment, pp. 1–14. DOI: 10.1080/21550085.2021.1885249.

"While NETs are not risk-free, I argue that they could be part of minimally just responses to climate change. In doing so, I identify a dilemma between limiting warming to 1.5 ° C, which promises lower climate impacts but implies greater NETs risks, and 2°C, which requires less NETs but promises greater climate impacts. Finally, I consider what the case of NETs reveals about permissibility in the face of non-compliance with principles of climate justice."

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