May 2021

17.05.2021

# Calls & events

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Job: Postdoctoral Associate (Stony Brook University)

Deadline: 19. June 2021

"Seeking a postdoc familiar with the marine carbonate system for an interdisciplinary project in the emerging field of ocean carbon dioxide removal (ocean CDR) and negative emissions technologies (NETs) that aims to mitigate ocean acidification while decreasing the atmospheric carbon dioxide concentration. The postdoc will help evaluate an electrochemical process that enables local adjustment and control of seawater carbonate chemistry."

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17.05.2021

# Calls & events

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Call for Abstracts: Enhanced Weathering and Synergistic Combinations with Other CDR Methods (Frontiers Research Topic)

Deadline: 30. September 2021

"This special collection encourages submissions to this broad application scheme of EW and welcomes contributions on laboratory experiments, greenhouse experiments as well as field trials. We also encourage submissions on modelling studies, as predictions about the efficiency of CDR, impacts on soil functioning and biological uptake of released elements by EW need improvements, such that in the future EW in combination with other CDR options can be applied in a sustainable way."

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17.05.2021

# Media

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nature Editorial: Give research into solar geoengineering a chance

"There is no substitute for aggressive cuts in greenhouse-gas emissions. But the risks and benefits of technologies that could mitigate global warming need to be evaluated."

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17.05.2021

# Media

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Climate Home News: Carbon removal experts support splitting “net zero” into twin targets

"Net zero goals can hide as much as they reveal. In a survey of 300 experts, we found the overwhelming majority favour a more transparent approach."

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17.05.2021

# New Publications

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Keyßer, Lorenz T.; Lenzen, Manfred (2021): 1.5 °C degrowth scenarios suggest the need for new mitigation pathways

Keyßer, Lorenz T.; Lenzen, Manfred (2021): 1.5 °C degrowth scenarios suggest the need for new mitigation pathways. In Nat Comms 12 (1), p. 2676. DOI: 10.1038/s41467-021-22884-9.

"As a first step to address this gap, this paper compares 1.5  °C degrowth scenarios with IPCC archetype scenarios, using a simplified quantitative representation of the fuel-energy-emissions nexus. Here we find that the degrowth scenarios minimize many key risks for feasibility and sustainability compared to technology-driven pathways, such as the reliance on high energy-GDP decoupling, large-scale carbon dioxide removal and large-scale and high-speed renewable energy transformation."

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17.05.2021

# New Publications

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Giannousakis, Anastasis; et al. (2021): How uncertainty in technology costs and carbon dioxide removal availability affect climate mitigation pathways

Giannousakis, Anastasis; Hilaire, Jérôme; Nemet, Gregory F.; Luderer, Gunnar; Pietzcker, Robert C.; Rodrigues, Renato et al. (2021): How uncertainty in technology costs and carbon dioxide removal availability affect climate mitigation pathways. In Energy 216, p. 119253. DOI: 10.1016/j.energy.2020.119253.

"We assess how energy supply costs and carbon dioxide removal (CDR) availability affect mitigation by performing a sensitivity analysis with the energy-economy-climate model REMIND. We use new scenarios with carbon price paths that aim to reduce the frequently seen temperature overshoot."

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17.05.2021

# New Publications

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Javed, Mahnoor; et al. (2021): An overview of effect of process parameters for removal of CO2 using biomass-derived adsorbents

Javed, Mahnoor; Zahoor, Muhammad; Mazari, Shaukat Ali; Qureshi, Sundus Saeed; Sabzoi, Nizamuddin; Jatoi, Abdul Sattar; Mubarak, Nabisab Mujawar (2021): An overview of effect of process parameters for removal of CO2 using biomass-derived adsorbents. In Biomass Conv. Bioref., pp. 1–19. DOI: 10.1007/s13399-021-01548-0.

"This review attempts to report and critically analyze the work conducted on the synthesis of biomass-derived adsorbents from various biomasses."

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17.05.2021

# New Publications

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Pisoft, Petr; et al. (2021): Stratospheric contraction caused by increasing greenhouse gases

Pisoft, Petr; Sacha, Petr; Polvani, Lorenzo M.; Añel, Juan Antonio; La Torre, L. de; Eichinger, Roland et al. (2021): Stratospheric contraction caused by increasing greenhouse gases. In Environ. Res. Lett. DOI: 10.1088/1748-9326/abfe2b.

"The layer in between, the stratosphere, has not been studied extensively with respect to changes of its global structure. Here we show that this atmospheric layer has contracted substantially over the last decades, and that the main driver for this are increasing concentrations of GHG."

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17.05.2021

# New Publications

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Gao, Ru-Shan; et al. (2021): Toward practical stratospheric aerosol albedo modification: Solar-powered lofting

Gao, Ru-Shan; Rosenlof, Karen H.; Kärcher, Bernd; Tilmes, Simone; Toon, Owen B.; Maloney, Christopher; Yu, Pengfei (2021): Toward practical stratospheric aerosol albedo modification: Solar-powered lofting. In Science Advances 7 (20). DOI: 10.1126/sciadv.abe3416.

"We explore a delivery method termed solar-powered lofting (SPL) that uses solar energy to loft CI material injected at lower altitudes accessible by conventional aircraft. Particles that absorb solar radiation are dispersed with the CI material and heat the surrounding air. The heated air rises, carrying the CI material to the stratosphere. Global model simulations show that black carbon aerosol (10 microgram per cubic meter) is sufficient to quickly loft CI material well into the stratosphere. SPL could make SAI viable at present, is also more energy efficient, and disperses CI material faster than direct stratospheric injection."

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17.05.2021

# Media

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Wageningen University & Research: The Emerging Politics of Geoengineering

"As climate change accelerates and the world scrambles to meet its net-zero targets, geoengineering is receiving more attention in the media. The US National Academy of Sciences recently recommended the initiation of $100-200 million research programme on reducing incoming sunlight. A related experiment in Sweden was postponed after resistance from local stakeholders. In a seminar at the Sciences Po in Paris, Dr Ina Möller will present her research on the politics of planetary interventions."

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