12.04.2021

# New Publications

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Lee, Walker Raymond; et al. (2021): High‐latitude stratospheric aerosol geoengineering can be more effective if injection is limited to spring

Lee, Walker Raymond; MacMartin, Douglas G.; Visioni, Daniele; Kravitz, Ben (2021): High‐latitude stratospheric aerosol geoengineering can be more effective if injection is limited to spring. In Geophysical Research Letters. DOI: 10.1029/2021GL092696.

"We demonstrate that spring injection produces approximately twice as much summer AOD as year‐round injection and restores approximately twice as much September sea ice, resulting in less increase in stratospheric sulfur burden, stratospheric heating, and stratospheric ozone depletion per unit of sea ice restored. We also find that differences in AOD between different seasonal injection strategies are small compared to the difference between annual and spring injection."

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12.04.2021

# Media

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ars technica: Ecological impacts of solar geoengineering are highly uncertain

"New research describes the unknowns in our knowledge of solar geoengineering."

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12.04.2021

# Media

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Grist: Why a landmark experiment into dimming the sun got canceled

"Who gets to decide if we research solar geoengineering?"

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12.04.2021

# Media

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Golem: Experiment to dim the sum cancelled in Sweden (German)

German article about the cancelled SCoPEx experiment in Sweden.

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08.04.2021

# Media

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China Dialogue: Who should govern solar geoengineering?

"Solar geoengineering is increasingly being touted as a potential treatment for global warming, but its use also poses major risks to people around the world, especially if left ungoverned."

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06.04.2021

# New Publications

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Zarnetske, Phoebe L.; et al. (2021): Potential ecological impacts of climate intervention by reflecting sunlight to cool Earth

Zarnetske, Phoebe L.; Gurevitch, Jessica; Franklin, Janet; Groffman, Peter M.; Harrison, Cheryl S.; Hellmann, Jessica J. et al. (2021): Potential ecological impacts of climate intervention by reflecting sunlight to cool Earth. In PNAS 118 (15), e1921854118. DOI: 10.1073/pnas.1921854118.

"We focus here on stratospheric aerosol intervention (SAI), a well-studied and relatively feasible SRM scheme that is likely to have a large impact on Earth’s surface temperature. We outline current gaps in knowledge about both helpful and harmful predicted effects of SAI on ecological systems."

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06.04.2021

# Media

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Independent: Geoengineering atmosphere to reflect Sun’s heat ‘no better than shot in the dark’, scientists warn

"Research shows reductions in burning greenhouse gases, not attempts to reflect the sun, are the best way to mitigate the climate crisis, writes Harry Cockburn."

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06.04.2021

# Media

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taz: Climate manipulation cancelled (German)

German-language newspaper article on the cancellation of the ScoPEx experiment in Sweden.

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06.04.2021

# Media

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The Harvard Crimson: SEAS Researchers Postpone Test Flight for Controversial Geoengineering Project To Block Sun

"Harvard researchers announced Wednesday they will postpone a test flight for a controversial environmental engineering project — the Stratospheric Controlled Perturbation Experiment — after pushback from an Indigenous peoples’ group in Sweden."

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05.04.2021

# Media

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The New York Times: Test Flight for Sunlight-Blocking Research Is Canceled

 

"The Swedish Space Corporation said it had canceled the flight — part of research to better understand the controversial idea of blocking the sun to fight climate change — after an outcry from environmentalists and others."

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