30.05.2020

# New Publications

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Visioni, Daniele; et al. 2020: “What Goes up Must Come down: Impacts of Deposition in a Sulfate Geoengineering Scenario.”

Visioni, Daniele, Eric Slessarev, Douglas MacMartin, Natalie M Mahowald, Christine L Goodale, and Lili Xia. 2020: “What Goes up Must Come down: Impacts of Deposition in a Sulfate Geoengineering Scenario.” Environmental Research Letters. https://doi.org/10.1088/1748-9326/ab94eb.

"‌We consider here an extreme sulfate geoengineering scenario necessary to maintain temperatures at 2020 levels while greenhouse gas emissions continue to grow unabated. We show that the amount of stratospheric sulfate needed could be globally balanced by the predicted decrease in tropospheric anthropogenic SO2 emissions, but the spatial distribution would move from industrialized regions to pristine areas. We show how these changes would affect ecosystems differently depending on present day observations of soil pH, which we use to infer the potential for acid-induced aluminum toxicity across the planet."

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18.05.2020

# New Publications

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Chen, Yating; et al. 2020: “Mitigation of Arctic Permafrost Carbon Loss through Stratospheric Aerosol Geoengineering.”

Chen, Yating, Aobo Liu, and John C. Moore. 2020: “Mitigation of Arctic Permafrost Carbon Loss through Stratospheric Aerosol Geoengineering.” Nature Communications 11 (1). https://doi.org/10.1038/s41467-020-16357-8.

‌"Increasing Earth’s albedo by the injection of sulfate aerosols into the stratosphere has been proposed as a way of offsetting some of the adverse effects of climate change. We examine this hypothesis in respect of permafrost carbon-climate feedbacks using the PInc-PanTher process model driven by seven earth system models running the Geoengineering Model Intercomparison Project (GeoMIP) G4 stratospheric aerosol injection scheme to reduce radiative forcing under the Representative Concentration Pathway (RCP) 4.5 scenario."

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14.05.2020

# New Publications

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Huynh, Han N., and V. Faye McNeill. 2020: “Heterogeneous Chemistry of CaCO3 Aerosols with HNO3 and HCl.”

Huynh, Han N., and V. Faye McNeill. 2020: “Heterogeneous Chemistry of CaCO3 Aerosols with HNO3 and HCl.” J. Phys. Chem. A 2020, 124, 19, 3886-3895. 2020. https://doi.org/10.1021/acs.jpca.9b11691.

‌"Here we report the results of an experimental study of the uptake of HNO3 and HCl onto submicron CaCO3 particles in two different flow reactors."

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30.04.2020

# New Publications

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Duan, Lei; et al. 2020: “A Model‐Based Investigation of Terrestrial Plant Carbon Uptake Response to Four Radiation Modification Approaches.”

Duan, Lei, Long Cao, Govindasamy Bala, and Ken Caldeira. 2020: “A Model‐Based Investigation of Terrestrial Plant Carbon Uptake Response to Four Radiation Modification Approaches.” Journal of Geophysical Research: Atmospheres 125 (9). https://doi.org/10.1029/2019jd031883.

"Using the National Center for Atmospheric Research Community Earth System Model, we performed simulations that represent four idealized radiation modification options: solar constant reduction, sulfate aerosol increase (SAI), marine cloud brightening, and cirrus cloud thinning (CCT)."

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12.04.2020

# Media

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AccuWeather: 'Cloud brightening' won't have effect many are hoping for, scientists say

"By studying cloud formation in the pollution-free skies above the Southern Ocean, scientists were able to identify an inverse relationship between sea salt availability and sulfate aerosols."

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10.04.2020

# New Publications

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Fossum, Kirsten N.; et al. 2020: “Sea-Spray Regulates Sulfate Cloud Droplet Activation over Oceans.”

Fossum, Kirsten N., Jurgita Ovadnevaite, Darius Ceburnis, Jana Preißler, Jefferson R. Snider, Ru-Jin Huang, Andreas Zuend, and Colin O’Dowd. 2020: “Sea-Spray Regulates Sulfate Cloud Droplet Activation over Oceans.” npj Climate and Atmospheric Science 3 (1). https://doi.org/10.1038/s41612-020-0116-2.

"We present new experimental results from the remote Southern Ocean illustrating that, for a given updraft, the peak supersaturation reached in cloud, and consequently the number of droplets activated on sulfate nuclei, is strongly but inversely proportional to the concentration of sea-salt activated despite a 10-fold lower abundance."

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06.04.2020

# Media

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AZoCleantech: Stratospheric Aerosol Geoengineering Could be Useful for Mitigating Climate Change

"The concept of stratospheric aerosol geoengineering involves adding a layer of aerosol particles to the upper atmosphere to decrease climate changes due to greenhouse gases like carbon dioxide."

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06.04.2020

# Media

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Digital Journal: Geoengineering could reduce climate change risks

"New research, from the UK, indicates that injecting the correct quantity of sulphur dioxide into Earth's upper atmosphere thicken the layer of light reflecting aerosol particles. This could lower the effects of climate change."

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27.03.2020

# Media

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Agro Ecology Innovations: Geoengineering Can Help Us To Save The Climate

"Stratospheric aerosol geoengineering is the concept that including a layer of aerosol particles to the higher ambiance can cut back local weather modifications brought on by greenhouse gases equivalent to carbon dioxide."

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24.03.2020

# New Publications

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Robock, Alan. 2020: “Benefits and Risks of Stratospheric Solar Radiation Management for Climate Intervention (Geoengineering).”

Robock, Alan. 2020: “Benefits and Risks of Stratospheric Solar Radiation Management for Climate Intervention (Geoengineering).” Spring Bridge Issue on Engineering and Climate Change (50/1). 

‌"Even if it becomes possible, stratospheric geoengineering would come with benefits but also risks and concerns. Quantifying these benefits and risks requires more research."

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