06.07.2020

# Media

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Video: Clive Elsworth: Iron Salt Aerosol Presentation

"The presentation will briefly:

  • make the urgent case for Negative Emission Technologies,
  • explain how methane removal is the low hanging fruit,
  • explain how a very diffuse ISA application over a wide area of iron-poor ocean would additionally safely induce a continuous, climate-relevant absorption of CO2."

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10.04.2020

# New Publications

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Diamond, Michael S.; et al. 2020: Substantial Cloud Brightening From Shipping in Subtropical Low Clouds.”

Diamond, Michael S., Hannah M. Director, Ryan Eastman, Anna Possner, and Robert Wood. 2020: “Substantial Cloud Brightening From Shipping in Subtropical Low Clouds.” AGU Advances 1 (1). https://doi.org/10.1029/2019av000111.

"We attribute a significant increase in cloud reflectivity to enhanced cloud droplet number concentrations within a major shipping corridor in the southeast Atlantic."

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10.02.2020

# Media

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Irish Times: How to get the carbon dioxide we shoved into the atmosphere back out again

"Environmentalists get nervous when they hear people talking about reducing carbon-induced global warming through “geoengineering”, the use of technology to intervene directly in the Earth’s systems to reduce the impact of climate change."

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29.01.2020

# New Publications

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Macias-Fauria, Marc; et al. (2020): Pleistocene Arctic megafaunal ecological engineering as a natural climate solution?

Macias-Fauria, Marc; Jepson, Paul; Zimov, Nikita; Malhi, Yadvinder (2020): Pleistocene Arctic megafaunal ecological engineering as a natural climate solution? In Philosophical transactions of the Royal Society of London. Series B, Biological sciences 375 (1794), p. 20190122. DOI: 10.1098/rstb.2019.0122.

"Here we review the environmental context of megafaunal ecological engineering in the Arctic; explore the mechanisms through which it can help mitigate climate change; and estimate its potential—based on bison and horse, with the aim of evaluating the feasibility of generating an ecosystem shift that is economically viable in terms of carbon benefits and of sufficient scale to play a significant role in global climate change mitigation."

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23.01.2020

# Media

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BBC News: Space mission to reveal 'Truths' about climate change

"The UK is going to lead a space mission to get an absolute measurement of the light reflected off Earth's surface."

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09.12.2019

# New Publications

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Zampieri, L.; et al. (2019): Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming

Zampieri, Lorenzo; Goessling, Helge F. (2019): Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming. In Earth's Future 7. DOI: 10.1029/2019EF001230.

"To counteract global warming, a geoengineering approach that aims at intervening in the Arctic ice‐albedo feedback has been proposed. A large number of wind‐driven pumps shall spread seawater on the surface in winter to enhance ice growth, allowing more ice to survive the summer melt. We test this idea with a coupled climate model by modifying the surface exchange processes such that the physical effect of the pumps is simulated."

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24.10.2018

# New Publications

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Soldatenko, S. A.; et al. (2018): Optimal Control of Aerosol Emissions into the Stratosphere to Stabilize the Earth’s Climate

Soldatenko, S. A.; Yusupov, R. M. (2018): Optimal Control of Aerosol Emissions into the Stratosphere to Stabilize the Earth’s Climate. In: Izvestiya Atmospheric and Oceanic Physics 54 (5), S. 480–486. DOI: 10.1134/S0001433818050122.

"The problem of the optimal control of aerosol emissions into the stratosphere to stabilize the Earth’s climate is considered based on the zero-dimensional energy balance model. The global surface-temperature deviation from the undisturbed value is the state variable, and the albedo of the artificial aerosol layer, whose time variations are functionally related to the change in the total mass of aerosol particles and, consequently, the rate of their emissions, is the control variable."

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08.10.2018

# Media

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Welt: "The life won't be the same." German

German article on CE.

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07.09.2018

# New Publications

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Li, Y.; et al. (2018): Climate model shows large-scale wind and solar farms in the Sahara increase rain and vegetation

Li, Y.; Kalnay, E.; Motesharrei, S.; Rivas, J.; Kucharski, F.; Kirk-Davidoff, D. et al. (2018): Climate model shows large-scale wind and solar farms in the Sahara increase rain and vegetation. In: Science 361 (6406), S. 1019–1022. DOI: 10.1126/science.aar5629.

"In this study, we used a climate model with dynamic vegetation to show that large-scale installations of wind and solar farms covering the Sahara lead to a local temperature increase and more than a twofold precipitation increase, especially in the Sahel, through increased surface friction and reduced albedo. The resulting increase in vegetation further enhances precipitation, creating a positive albedo–precipitation–vegetation feedback that contributes ~80% of the precipitation increase for wind farms. This local enhancement is scale dependent and is particular to the Sahara, with small impacts in other deserts."

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03.09.2018

# New Publications

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Rautiainen, A.; et al. (2018): Market-Level Implications of Regulating Forest Carbon Storage and Albedo for Climate Change Mitigation

Rautiainen, A.; Lintunen, J.; Uusivuori, J. (2018): Market-Level Implications of Regulating Forest Carbon Storage and Albedo for Climate Change Mitigation. In: Agric. Resour. Econom. Rev. 26, S. 1–33. DOI: 10.1017/age.2018.8.

"We numerically assess the policy’s market-level impacts on land allocation, harvests, and climate forcing, and evaluate how parameter choices (albedo strength, productivity of forest land, and carbon and albedo prices) affect the outcomes. Carbon pricing alone leads to an overprovision of climate benefits at the expense of food and timber production. Complementing the policy with albedo pricing reduces these welfare losses."

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