April 2017

10.04.2017

# Political Papers

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Mead, Leila; et al. (2017): Summary of the 45th Session of the Intergovernmental Panel on Climate Change: 28-31 March 2017

Mead, Leila; Davenport, Deborah; Kosolapova, Elena; Woods, Bryndis (2017): Summary of the 45th Session of the Intergovernmental Panel on Climate Change: 28-31 March 2017. In Earth Negotiations Bulletin 12 (690), pp. 1–14.

IPCC meeting report including discussion on CE.

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10.04.2017

# Projects

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Project: Pleistocene Park: Rewilding Siberia to Save the Climate

"In the heart Siberia a sleeping giant has awakened. The permafrost, frozen for thousands of years, is starting to thaw. As the climate heats up, methane trapped in the permafrost could kick climate change into overdrive. A team of Russian Scientists, led by Ecologists Nikita and Sergei Zimov, have a solution for stopping permafrost meltdown in the Taiga…by restoring an ancient ecosystem." (see also this link)

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10.04.2017

# Media

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Motherboard: Trump Is Giving Geoengineering Another Moment

"New concerns over whether Trump will use geoengineering for evil are almost entirely unfounded."

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10.04.2017

# Media

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Huffington Post: Trump Circle Touts Risky ‘Climate Engineering’

"Responsible scientists have little faith in untested proposals to re-engineer the earth’s climate system."

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10.04.2017

# Projects

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Project: Emmett Institute Takes on Climate Engineering Project

"The potential and pitfalls of climate engineering technologies are the subjects of a new research project led by UCLA School of Law's Emmett Institute on Climate Change and the Environment."

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10.04.2017

# New Publications

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Kantola, Ilsa B.; et al. (2017): Potential of global croplands and bioenergy crops for climate change mitigation through deployment for enhanced weathering

Kantola, Ilsa B.; Masters, Michael D.; Beerling, David J.; Long, Stephen P.; DeLucia, Evan H. (2017): Potential of global croplands and bioenergy crops for climate change mitigation through deployment for enhanced weathering. In Biology letters 13 (4). DOI: 10.1098/rsbl.2016.0714 

"Enhanced weathering (EW) in agricultural soils—applying crushed silicate rock as a soil amendment—is a method for combating global climate change while increasing nutrient availability to plants. EW uses land that is already producing food and fuel to sequester carbon (C), and reduces N2O loss through pH buffering. As biofuel use increases, EW in bioenergy crops offers the opportunity to sequester CO2 while reducing fossil fuel combustion. Uncertainties remain in the long-term effects and global implications of large-scale efforts to directly manipulate Earth's atmospheric CO2 composition, but EW in agricultural lands is an opportunity to employ these soils to sequester atmospheric C while benefitting crop production and the global climate."

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10.04.2017

# New Publications

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Edwards, David P.; et al. (2017): Climate change mitigation: potential benefits and pitfalls of enhanced rock weathering in tropical agriculture

Edwards, David P.; Lim, Felix; James, Rachael H.; Pearce, Christopher R.; Scholes, Julie; Freckleton, Robert P.; Beerling, David J. (2017): Climate change mitigation: potential benefits and pitfalls of enhanced rock weathering in tropical agriculture. In Biology letters 13 (4). DOI: 10.1098/rsbl.2016.0715

"We review the potential for deployment of enhanced weathering (EW), via the application of crushed reactive silicate rocks (such as basalt), on over 680 million hectares of tropical agricultural and tree plantations to offset fossil fuel CO2 emissions. Warm tropical climates and productive crops will substantially enhance weathering rates, with potential co-benefits including decreased soil acidification and increased phosphorus supply promoting higher crop yields sparing forest for conservation, and reduced cultural eutrophication."

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10.04.2017

# New Publications

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Lawford-Smith, H.; Currie, A. (2017): Accelerating the carbon cycle: the ethics of enhanced weathering

Lawford-Smith, H.; Currie, A. (2017): Accelerating the carbon cycle: the ethics of enhanced weathering. In Biology letters 13 (4). DOI: 10.1098/rsbl.2016.0859

"We argue that ethical concerns have a place alongside empirical, political and social factors as we consider how to best respond to the critical challenge that anthropogenic climate change poses. We review these concerns, considering the ethical issues that arise (or would arise) in the large-scale deployment of enhanced weathering. We discuss post-implementation scenarios, failures of collective action, the distribution of risk and externalities and redress for damage."

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10.04.2017

# New Publications

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Taylor, Lyla L.; et al. (2017): Simulating carbon capture by enhanced weathering with croplands: an overview of key processes highlighting areas of future model development

Taylor, Lyla L.; Beerling, David J.; Quegan, Shaun; Banwart, Steven A. (2017): Simulating carbon capture by enhanced weathering with croplands: an overview of key processes highlighting areas of future model development. In Biology letters 13 (4). DOI: 10.1098/rsbl.2016.0868

"Here, we review the processes leading to soil acidification in croplands and how the soil weathering CO2 sink is represented in models. Mathematical models capturing the dominant processes and human interventions governing cropland soil chemistry and GHG emissions neglect weathering, while most weathering models neglect agricultural processes. We discuss current approaches to modelling EW and highlight several classes of model having the potential to simulate EW in croplands."

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10.04.2017

# New Publications

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Meysman, Filip J. R.; Montserrat, Francesc (2017): Negative CO2 emissions via enhanced silicate weathering in coastal environments

Meysman, Filip J. R.; Montserrat, Francesc (2017): Negative CO2 emissions via enhanced silicate weathering in coastal environments. In Biology letters 13 (4). DOI: 10.1098/rsbl.2016.0905

"Enhanced silicate weathering (ESW) proposes to exploit the natural process of mineral weathering for the removal of CO2 from the atmosphere. Here, we discuss the potential of applying ESW in coastal environments as a climate change mitigation option. By deliberately introducing fast-weathering silicate minerals onto coastal sediments, alkalinity is released into the overlying waters, thus creating a coastal CO2 sink. Compared with other NETs, coastal ESW has the advantage that it counteracts ocean acidification, does not interfere with terrestrial land use and can be directly integrated into existing coastal management programmes with existing (dredging) technology."

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