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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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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03.05.2021

# New Publications

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Hansson, Anders; et al. (2021): Boundary Work and Interpretations in the IPCC Review Process of the Role of Bioenergy With Carbon Capture and Storage (BECCS) in Limiting Global Warming to 1.5°C

Hansson, Anders; Anshelm, Jonas; Fridahl, Mathias; Haikola, Simon (2021): Boundary Work and Interpretations in the IPCC Review Process of the Role of Bioenergy With Carbon Capture and Storage (BECCS) in Limiting Global Warming to 1.5°C. In Front. Clim. 3. DOI: 10.3389/fclim.2021.643224.

"This paper contributes to recent debates about the role of the IPCC, and its framing of BECCS, at the science-policy interface."

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22.04.2021

# New Publications

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Creutzig, Felix; et al. (2021): Considering sustainability thresholds for BECCS in IPCC and biodiversity assessments

Creutzig, Felix; Erb, Karl‐Heinz; Haberl, Helmut; Hof, Christian; Hunsberger, Carol; Roe, Stephanie (2021): Considering sustainability thresholds for BECCS in IPCC and biodiversity assessments. In GCB Bioenergy 13 (4), pp. 510–515. DOI: 10.1111/gcbb.12798.

"Here, we contrast insights from these reports with other recent literature and demonstrate that BECCS bears additional risks for biodiversity, livelihoods, and intertemporal carbon balances."

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21.12.2020

# Media

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Heinrich Böll Stiftung (2020): A Societal Transformation Scenario for Staying Below 1.5°C. A study by Kai Kuhnhenn, Luis Costa, Eva Mahnke, Linda Schneider, Steffen Lange

Heinrich Böll Stiftung (2020): A Societal Transformation Scenario for Staying Below 1.5°C. A study by Kai Kuhnhenn, Luis Costa, Eva Mahnke, Linda Schneider, Steffen Lange. Edited by Heinrich Böll Foundation and Konzeptwerk Neue Ökonomie 2020 (Schriften zu Wirtschaft und Soziales, 23).

"Together with researchers from engineering and the natural and social sciences, Heinrich Böll Foundation and Konzeptwerk Neue Ökonomie developed a «Societal Transformation Scenario» for this publication – a global climate mitigation scenario that explores the climate effects of limiting global production and consumptions and of envisioning a broader societal transformation to accompany these transformations to reach a good life for all."

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02.12.2020

# Media

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Live Science: Could we ever pull enough carbon out of the atmosphere to stop climate change?

"But what does this sci-fi-like act really entail? And how much will it actually take — and cost — to make a difference and slow climate change? Sabine Fuss has been looking for these answers for the last two years. An economist in Berlin, Fuss leads a research group at the Mercator Research Institute on Global Commons and Climate Change and was part of the original Intergovernmental Panel on Climate Change (IPCC) — established by the United Nations to assess the science, risks and impacts of global warming."

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13.11.2020

# New Publications

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Reynolds, Jesse L. (2020): Is solar geoengineering ungovernable? A critical assessment of governance challenges identified by the Intergovernmental Panel on Climate Change

Reynolds, Jesse L. (2020): Is solar geoengineering ungovernable? A critical assessment of governance challenges identified by the Intergovernmental Panel on Climate Change. In Wiley Interdisciplinary Reviews: Climate Change. DOI: 10.1002/wcc.690.

"I find seven such challenges identified in the IPCC reports: that SRM could lessen mitigation; that its termination would cause severe climatic impacts; that researching SRM would create a “slippery slope” to its inevitable and unwanted use; that decisions to use it could be contrary to democratic norms; that the public may not accept SRM; that it could be unethical; and that decisions to use SRM could be unilateral. After assessing the extent to which these challenges are supported by existing evidence, scholarly literature, and robust logic, I conclude that, for six of the seven, the IPCC's claims variously are speculative, fail to consider both advantages and disadvantages, implicitly make unreasonable negative assumptions, are contrary to existing evidence, and/or are meaninglessly vague."

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13.11.2020

# Media

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LegalPlanet: The IPCC Misses the Mark on Solar Geoengineering

"The Intergovernmental Panel Climate Change poorly portrays the “institutional and social constraints to deployment related to governance”."

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01.06.2020

# Calls & events

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Call for Submissions: Scenario Submission Portal for IPCC AR6 WGIII

Deadline: 19. September 2020

"This portal is used to collect quantative scenario data for Working Group III of the IPCC Sixth Assessment Report through a cooperation agreement with the explicit endorsement of the co-Chairs of WGIII of the IPCC."

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31.01.2020

# New Publications

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Callaghan, Max W.; et al. (2020): A topography of climate change research

Callaghan, Max W.; Minx, Jan C.; Forster, Piers M. (2020): A topography of climate change research. In Nat. Clim. Chang. 77, p. 252. DOI: 10.1038/s41558-019-0684-5.

"We use topic modelling to draw a topic map, or topography, of over 400,000 publications from the Web of Science on climate change. We update current knowledge on the IPCC, showing that compared with the baseline of the literature identified, the social sciences are in fact over-represented in recent assessment reports. Technical, solutions-relevant knowledge—especially in agriculture and engineering—is under-represented."

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