03.03.2021

# Media

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NCAR: CCIS 2020 Webinar Series: Recordings

"Main Goals of the CCIS Webinar Series: Conceptualization of a research framework for assessing proposed climate intervention strategies: Establish shared understanding of ongoing research of climate intervention strategies in different research communities and main challenges. Reach a perspectival integration for completeness of knowledge/understanding. Identify elements of a research program, identify existing and new working groups of such a program."

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01.03.2021

# Political Papers

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van Woensel, Lieve (2021): What if we could engineer the planet to help fight climate change?

van Woensel, Lieve (2021): What if we could engineer the planet to help fight climate change? With Marcos Fernández Álvarez, Scientific Foresight Unit (STOA). European Parliament (At A Glance).

"Efforts to curb carbon emissions are falling short ‒ and geoengineering is again in the spotlight. Will governments end up tinkering with Earth’s thermostat?"


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01.03.2021

# Media

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The Economist: Dusting the upper atmosphere could help counter climate change

"An experiment to test the idea could soon start in Sweden."

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26.02.2021

# New Publications

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Baird, Mark Edward; et al. (2020): Optimising cool-water injections to reduce thermal stress on coral reefs of the Great Barrier Reef

Baird, Mark Edward; Green, Rebecca; Lowe, Ryan; Mongin, Mathieu; Bougeot, Elodie (2020): Optimising cool-water injections to reduce thermal stress on coral reefs of the Great Barrier Reef. In PloS one 15 (10), e0239978. DOI: 10.1371/journal.pone.0239978.

"Coral bleaching driven by ocean warming is one of the most visible ecological impacts of climate change and perhaps the greatest threat to the persistence of reefs in the coming decades"

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26.02.2021

# New Publications

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Malik, Abdul; et al. (2020): Tropical Pacific climate variability under solar geoengineering: impacts on ENSO extremes

Malik, Abdul; Nowack, Peer J.; Haigh, Joanna D.; Cao, Long; Atique, Luqman; Plancherel, Yves (2020): Tropical Pacific climate variability under solar geoengineering: impacts on ENSO extremes. In Atmos. Chem. Phys 20 (23), pp. 15461–15485. DOI: 10.5194/acp-20-15461-2020.

"We here present results from a 1000-year-long solar-geoengineering simulation, G1, carried out with the coupled atmosphere–ocean general circulation model HadCM3L. In agreement with previous studies, reducing the solar irradiance (4 %) to offset global mean surface warming in the model more than compensates the warming in the tropical Pacific that develops in the 4 × CO2 scenario."

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19.02.2021

# New Publications

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Robrecht, Sabine; et al. (2021): Potential of future stratospheric ozone loss in the midlatitudes under global warming and sulfate geoengineering

Robrecht, Sabine; Vogel, Bärbel; Tilmes, Simone; Müller, Rolf (2021): Potential of future stratospheric ozone loss in the midlatitudes under global warming and sulfate geoengineering. In Atmospheric Chemistry and Physics 21 (4), pp. 2427–2455. DOI: 10.5194/acp-21-2427-2021.

"Therefore, the results of the Geoengineering Large Ensemble Simulations (GLENS) for the lowermost-stratospheric mixing layer between tropospheric and stratospheric air are considered together with 10-day box-model simulations performed with the Chemical Lagrangian Model of the Stratosphere (CLaMS). In GLENS two future scenarios are simulated: the RCP8.5 global warming scenario and a geoengineering scenario, where sulfur is additionally injected into the stratosphere to keep the global mean surface temperature from changing."

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19.02.2021

# Media

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The New Yorker: The Enormous Risk of Atmospheric Hacking

"Sometime in the next two weeks, an independent advisory committee is expected to issue a recommendation on a request from a team of Harvard scientists to fly a balloon from Kiruna, in Sweden’s Lapland region."

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15.02.2021

# Political Papers

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Kelly, David; et al. (2021): Solar Geoengineering, Learning, and Experimentation

Kelly, David; Heutel, Garth; Moreno-Cruz, Juan; Shayegh, Soheil (2021): Solar Geoengineering, Learning, and Experimentation. National Bureau of Economic Research. Cambridge, MA (Working Paper, 28442).

"We model endogenous learning over two uncertainties: the sensitivity of temperatures to carbon concentrations (the climate sensitivity), and the effectiveness of SGE in lowering temperatures. We present both theoretical and simulation results from an integrated assessment model, focusing on the informational value of SGE experimentation."

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15.02.2021

# New Publications

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Smith, Wake; Henly, Claire (2021): Updated and outdated reservations about research into stratospheric aerosol injection

Smith, Wake; Henly, Claire (2021): Updated and outdated reservations about research into stratospheric aerosol injection. In Climatic Change 164 (3-4), pp. 1–15. DOI: 10.1007/s10584-021-03017-z.

"In this paper, we seek to ground discussions of the governance of stratospheric aerosol injection research in recent literature about the field including an updated understanding of the technology’s deployment logistics and scale, pattern of effects, and research pathways."

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12.02.2021

# Media

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Independent: Solar geoengineering: Could reflecting away the sun’s rays help to tackle global heating?

"As the climate crisis escalates, some have called for more research into technologies that could reflect away the sun’s rays in order to limit temperature rise."

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